Merge branch 'development' into l1aggregation

This reverts commit a17f503486.

.gitignore

@@ -12,9 +12,9 @@ config.log
 config.status
 
 # generated folder
-include/
-modules/
-docs/src/tmp
+/include/
+/modules/
+/docs/src/tmp
 autom4te.cache
 
 # the executable from tests

Changelog

@@ -1,5 +1,6 @@
 Changelog. A lot less detailed than usual, at least for past
 	history.
+2022/05/20: Restart ChangeLog. Updated to new name AMG4PSBLAS, now using PSB3.8	
 2018/10/28: Fix interface to MUMPS and configry machinery. Require PSB 3.6.
 2018/10/10: ICTXT argument in prec%init().	
 2018/07/30: Fixes for Intel compilers. BootCMatch interface in examples. 	

LICENSE

@@ -1,10 +1,10 @@
   
    
-                             AMG4PSBLAS version 1.0
+                             AMG4PSBLAS version 1.1
     Algebraic Multigrid Package
-               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+               based on PSBLAS (Parallel Sparse BLAS version 3.8)
     
-    (C) Copyright 2020 
+    (C) Copyright 2022
   
         Salvatore Filippone  
         Pasqua D'Ambra   

Make.inc.in

@@ -2,10 +2,10 @@
 .mod=@MODEXT@
 .fh=.fh
 .SUFFIXES: 
-.SUFFIXES: .f90 .F90 .f .F .c .o
+.SUFFIXES: .f90 .F90 .f .F .c .cpp .o
 ##########################################################
 #                                                        #
-#  Note: directories external to the MLD2P4 subtree      #
+#  Note: directories external to the AMG4PSBLAS subtree  #
 #  must be specified here with absolute pathnames        #
 #                                                        #
 ##########################################################
@@ -16,6 +16,7 @@ PSBLAS_LIBDIR=@PSBLAS_LIBDIR@
 @PSBLAS_INSTALL_MAKEINC@
 PSBLAS_INCLUDES=@PSBLAS_INCLUDES@
 PSBLAS_LIBS=@PSBLAS_LIBS@	
+PSBBASEMODNAME=psb_base_mod
 
 
 
@@ -69,15 +70,16 @@ EXTRALIBS=@EXTRA_LIBS@
 
 
 #
-MLDCDEFINES=$(MUMPSFLAGS) $(SLUFLAGS) $(UMFFLAGS) $(SLUDISTFLAGS) $(PSBCDEFINES)
-MLDFDEFINES=@FDEFINES@ $(PSBFDEFINES)
+AMGCDEFINES=$(MUMPSFLAGS) $(SLUFLAGS) $(UMFFLAGS) $(SLUDISTFLAGS) $(PSBCDEFINES)
+CDEFINES=$(AMGCDEFINES)
+AMGFDEFINES=@AMGFDEFINES@ $(PSBFDEFINES)
+FDEFINES=$(AMGFDEFINES)
 
-CDEFINES=$(MLDCDEFINES)
-FDEFINES=$(MLDFDEFINES)
+CXXDEFINES=@AMGCXXDEFINES@ $(PSBCXXDEFINES)
 
 @COMPILERULES@
 
 
-MLDLDLIBS=$(MUMPSLIBS) $(SLULIBS) $(SLUDISTLIBS) $(UMFLIBS) $(EXTRALIBS) $(PSBLDLIBS)
-LDLIBS=$(MLDLDLIBS)
+AMGLDLIBS=$(MUMPSLIBS) $(SLULIBS) $(SLUDISTLIBS) $(UMFLIBS) $(EXTRALIBS) $(PSBLDLIBS) -lstdc++
+LDLIBS=$(AMGLDLIBS)
 

Make_n.inc.in

@@ -0,0 +1,120 @@
+##########################################################
+.mod=@MODEXT@
+.fh=.fh
+.SUFFIXES: 
+.SUFFIXES: .f90 .F90 .f .F .c .cpp .o
+# The following ones are the variables used by the PSBLAS make scripts.
+
+FC=@FC@
+CC=@CC@
+CXX=@CXX@
+FCOPT=@FCOPT@
+CCOPT=@CCOPT@
+CXXOPT=@CXXOPT@
+FMFLAG=@FMFLAG@
+FIFLAG=@FIFLAG@
+EXTRA_OPT=@EXTRA_OPT@
+
+# These three should be always set!
+MPFC=@MPIFC@
+MPCC=@MPICC@
+MPCXX=@MPICXX@
+
+FLINK=@FLINK@
+
+LIBS=@LIBS@
+
+# BLAS, BLACS and METIS libraries.
+BLAS=@BLAS_LIBS@
+METIS_LIB=@METIS_LIBS@
+LAPACK=@LAPACK_LIBS@
+
+PSBFDEFINES=@FDEFINES@
+PSBCDEFINES=@CDEFINES@
+PSBCXXDEFINES=@CDEFINES@
+AR=@AR@
+RANLIB=@RANLIB@
+
+##########################################################
+#                                                        #
+#  Note: directories external to the AMG4PSBLAS subtree  #
+#  must be specified here with absolute pathnames        #
+#                                                        #
+##########################################################
+PSBLASDIR=@PSBLAS_DIR@
+PSBLAS_INCDIR=@PSBLAS_INCDIR@
+PSBLAS_MODDIR=@PSBLAS_MODDIR@
+PSBLAS_LIBDIR=@PSBLAS_LIBDIR@
+PSBLAS_INCLUDES=@PSBLAS_INCLUDES@
+PSBLAS_LIBS=@PSBLAS_LIBS@	
+PSBBASEMODNAME=psb_base_mod
+PSBPRECMODNAME=psb_prec_mod
+PSBMETHDMODNAME=psb_krylov_mod
+PSBUTILMODNAME=psb_util_mod
+
+
+
+
+INSTALL=@INSTALL@
+INSTALL_DATA=@INSTALL_DATA@
+INSTALL_DIR=@INSTALL_DIR@
+INSTALL_LIBDIR=@INSTALL_LIBDIR@
+INSTALL_INCLUDEDIR=@INSTALL_INCLUDEDIR@
+INSTALL_MODULESDIR=@INSTALL_MODULESDIR@
+INSTALL_DOCSDIR=@INSTALL_DOCSDIR@
+INSTALL_SAMPLESDIR=@INSTALL_SAMPLESDIR@
+
+
+##########################################################
+#                                                        #
+#  Additional defines and libraries for multilevel       #
+#  Note that these libraries should be compatible        #
+#  (compiled with) the compilers specified in the        #
+#  PSBLAS main Make.inc                                  #
+#                                                        #
+#  Examples:                                             #
+#  MUMPSLIBS=-ldmumps -lmumps_common                     #
+#             -lpord -L/path/to/MUMPS/lib                #
+#  MUMPSFLAGS=-DHave_MUMPS_ -I/path/to/MUMPS/include     #
+#                                                        #
+#  UMFLIBS=-lumfpack -lamd -L/path/to/UMFPACK            #
+#  UMFFLAGS=-DHave_UMF_ -I/path/to/UMFPACK               #
+#                                                        #
+#  SLULIBS=-lslu   -L/path/to/SuperLU                    #
+#  SLUFLAGS=-DHave_SLU_ -I/path/to/SuperLU               #
+#                                                        #
+#  SLUDISTLIBS=-lslud -L/path/to/SuperLUDist             #
+#  SLUDISTFLAGS=-DHave_SLUDist_ -I/path/to/SuperLUDist   #
+#                                                        #
+##########################################################
+
+MUMPSLIBS=@MUMPS_LIBS@
+MUMPSFLAGS=@MUMPS_FLAGS@
+
+SLULIBS=@SLU_LIBS@
+SLUFLAGS=@SLU_FLAGS@
+
+SLUDISTLIBS=@SLUDIST_LIBS@
+SLUDISTFLAGS=@SLUDIST_FLAGS@
+
+UMFLIBS=@UMF_LIBS@
+UMFFLAGS=@UMF_FLAGS@
+
+EXTRALIBS=@EXTRA_LIBS@
+
+
+
+@COMPILERULES@
+
+#
+AMGCDEFINES=$(MUMPSFLAGS) $(SLUFLAGS) $(UMFFLAGS) $(SLUDISTFLAGS) $(PSBCDEFINES)
+CDEFINES=$(AMGCDEFINES)
+AMGFDEFINES=@AMGFDEFINES@ $(PSBFDEFINES)
+FDEFINES=$(AMGFDEFINES)
+
+CXXDEFINES=@AMGCXXDEFINES@ $(PSBCXXDEFINES)
+
+AMGLDLIBS=$(MUMPSLIBS) $(SLULIBS) $(SLUDISTLIBS) $(UMFLIBS) $(EXTRALIBS) $(PSBLDLIBS) -lstdc++
+LDLIBS=$(AMGLDLIBS)
+
+

Makefile

@@ -1,10 +1,13 @@
 include Make.inc
 
 
-all:  library 
+all:  objs lib
 
-library: libdir amgp
-#cbnd
+objs: libdir amgp cbnd
+
+lib:  objs
+	cd amgprec && $(MAKE) lib
+	cd cbind && $(MAKE)  lib
 
 libdir:
 	(if test ! -d lib ; then mkdir lib; fi)
@@ -14,10 +17,11 @@ libdir:
         
 
 amgp:
-	$(MAKE) -C amgprec all
+	cd amgprec && $(MAKE) objs
 cbnd: amgp
-	$(MAKE) -C cbind all
-install: all
+	cd cbind && $(MAKE)  objs
+
+install: lib
 	mkdir -p $(INSTALL_LIBDIR) &&\
 	   $(INSTALL_DATA) lib/*.a  $(INSTALL_LIBDIR)
 	mkdir -p  $(INSTALL_INCLUDEDIR) &&\
@@ -33,22 +37,22 @@ install: all
 	mkdir -p  $(INSTALL_SAMPLESDIR) && \
 		 mkdir -p  $(INSTALL_SAMPLESDIR)/simple &&\
 	 	 mkdir -p  $(INSTALL_SAMPLESDIR)/advanced && \
-		(cd examples; /bin/cp -fr pdegen fileread $(INSTALL_SAMPLESDIR)/simple ) && \
-		(cd tests; /bin/cp -fr pdegen fileread $(INSTALL_SAMPLESDIR)/advanced )
+		(cd samples/simple; /bin/cp -fr pdegen fileread $(INSTALL_SAMPLESDIR)/simple ) && \
+		(cd samples/advanced; /bin/cp -fr pdegen fileread $(INSTALL_SAMPLESDIR)/advanced )
 cleanlib:
 	(cd lib; /bin/rm -f *.a *$(.mod) *$(.fh))
 	(cd include; /bin/rm -f *.a *$(.mod) *$(.fh))
 	(cd modules; /bin/rm -f *.a *$(.mod) *$(.fh))
 
 veryclean: cleanlib
-	(cd amgprec; make veryclean)
-	(cd examples/fileread; make clean)
-	(cd examples/pdegen; make clean)
-	(cd tests/fileread; make clean)
-	(cd tests/pdegen; make clean)
+	(cd amgprec && $(MAKE) veryclean)
+	(cd samples/simple/fileread && $(MAKE) clean)
+	(cd samples/simple/pdegen && $(MAKE) clean)
+	(cd samples/advanced/fileread && $(MAKE) clean)
+	(cd samples/advanced/pdegen && $(MAKE) clean)
 
 check: all
-	make check -C tests/pdegen
+	make check -C samples/advanced/pdegen
 
 clean:
-	(cd amgprec; make clean)
+	(cd amgprec && $(MAKE) clean)

README.md

@@ -1,6 +1,5 @@
-
                          AMG4PSBLAS  
- Algebraic Multigrid Package  based on PSBLAS (Parallel Sparse BLAS version 3.7)
+ Algebraic Multigrid Package  based on PSBLAS (Parallel Sparse BLAS version 3.8)
     
 Salvatore Filippone    (University of Rome Tor Vergata and IAC-CNR)
 Pasqua D'Ambra         (IAC-CNR, Naples, IT)

amgprec/Makefile

@@ -9,44 +9,46 @@ FINCLUDES=$(FMFLAG)$(HERE) $(FMFLAG)$(INCDIR) $(PSBLAS_INCLUDES)
 
 DMODOBJS=amg_d_prec_type.o \
 	amg_d_inner_mod.o amg_d_ilu_solver.o amg_d_diag_solver.o amg_d_jac_smoother.o amg_d_as_smoother.o \
+        amg_d_poly_smoother.o amg_d_poly_coeff_mod.o\
 	amg_d_umf_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o amg_d_id_solver.o\
 	amg_d_base_solver_mod.o amg_d_base_smoother_mod.o amg_d_onelev_mod.o \
-	amg_d_gs_solver.o amg_d_mumps_solver.o \
+	amg_d_gs_solver.o amg_d_mumps_solver.o amg_d_jac_solver.o \
 	amg_d_base_aggregator_mod.o \
 	amg_d_dec_aggregator_mod.o amg_d_symdec_aggregator_mod.o \
 	amg_d_ainv_solver.o amg_d_base_ainv_mod.o \
-	amg_d_invk_solver.o amg_d_invt_solver.o
-#amg_d_bcmatch_aggregator_mod.o
+	amg_d_invk_solver.o amg_d_invt_solver.o amg_d_krm_solver.o \
+	amg_d_matchboxp_mod.o amg_d_parmatch_aggregator_mod.o
 
 SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.o \
 	amg_s_inner_mod.o amg_s_ilu_solver.o amg_s_diag_solver.o amg_s_jac_smoother.o amg_s_as_smoother.o \
-	amg_s_slu_solver.o amg_s_id_solver.o\
+	amg_s_poly_smoother.o amg_s_slu_solver.o amg_s_id_solver.o\
 	amg_s_base_solver_mod.o amg_s_base_smoother_mod.o amg_s_onelev_mod.o  \
-	amg_s_gs_solver.o amg_s_mumps_solver.o \
+	amg_s_gs_solver.o amg_s_mumps_solver.o  amg_s_jac_solver.o \
 	amg_s_base_aggregator_mod.o  \
 	amg_s_dec_aggregator_mod.o amg_s_symdec_aggregator_mod.o \
 	amg_s_ainv_solver.o amg_s_base_ainv_mod.o \
-	amg_s_invk_solver.o amg_s_invt_solver.o
+	amg_s_invk_solver.o amg_s_invt_solver.o amg_s_krm_solver.o \
+	amg_s_matchboxp_mod.o amg_s_parmatch_aggregator_mod.o
 
 ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.o \
 	amg_z_inner_mod.o amg_z_ilu_solver.o amg_z_diag_solver.o amg_z_jac_smoother.o amg_z_as_smoother.o \
 	amg_z_umf_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o amg_z_id_solver.o\
 	amg_z_base_solver_mod.o amg_z_base_smoother_mod.o amg_z_onelev_mod.o \
-	amg_z_gs_solver.o amg_z_mumps_solver.o \
+	amg_z_gs_solver.o amg_z_mumps_solver.o  amg_z_jac_solver.o \
 	amg_z_base_aggregator_mod.o  \
 	amg_z_dec_aggregator_mod.o amg_z_symdec_aggregator_mod.o \
 	amg_z_ainv_solver.o amg_z_base_ainv_mod.o \
-	amg_z_invk_solver.o amg_z_invt_solver.o
+	amg_z_invk_solver.o amg_z_invt_solver.o amg_z_krm_solver.o
 
 CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.o \
 	amg_c_inner_mod.o amg_c_ilu_solver.o amg_c_diag_solver.o amg_c_jac_smoother.o amg_c_as_smoother.o \
 	amg_c_slu_solver.o amg_c_id_solver.o\
 	amg_c_base_solver_mod.o amg_c_base_smoother_mod.o amg_c_onelev_mod.o  \
-	amg_c_gs_solver.o amg_c_mumps_solver.o \
+	amg_c_gs_solver.o amg_c_mumps_solver.o  amg_c_jac_solver.o \
 	amg_c_base_aggregator_mod.o  \
 	amg_c_dec_aggregator_mod.o amg_c_symdec_aggregator_mod.o \
 	amg_c_ainv_solver.o amg_c_base_ainv_mod.o \
-	amg_c_invk_solver.o amg_c_invt_solver.o
+	amg_c_invk_solver.o amg_c_invt_solver.o amg_c_krm_solver.o
 
 
 
@@ -61,25 +63,37 @@ OBJS=$(MODOBJS)
 LOCAL_MODS=$(MODOBJS:.o=$(.mod))
 LIBNAME=libamg_prec.a
 
-all: lib impld
+all: objs impld
 
-impld: $(OBJS)
-	$(MAKE) -C impl
-
-lib: $(OBJS) impld
-	$(AR) $(HERE)/$(LIBNAME) $(OBJS)
-	$(RANLIB) $(HERE)/$(LIBNAME)
-	/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
+objs: $(OBJS)
 	/bin/cp -p amg_const.h $(INCDIR)
 	/bin/cp -p *$(.mod) $(MODDIR)
 
+impld: objs
+	cd impl && $(MAKE) 
 
-$(MODOBJS): $(PSBLAS_MODDIR)/$(BASEMODNAME)$(.mod)
+lib: $(OBJS) impld
+	cd impl && $(MAKE) lib
+	$(AR) $(HERE)/$(LIBNAME) $(OBJS)
+	$(RANLIB) $(HERE)/$(LIBNAME)
+	/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
+
+
+$(MODOBJS): $(PSBLAS_MODDIR)/$(PSBBASEMODNAME)$(.mod)
 
 amg_base_prec_type.o: amg_const.h
 amg_s_prec_type.o amg_d_prec_type.o amg_c_prec_type.o amg_z_prec_type.o	: amg_base_prec_type.o
 amg_prec_type.o: amg_s_prec_type.o amg_d_prec_type.o amg_c_prec_type.o amg_z_prec_type.o
 amg_prec_mod.o: amg_prec_type.o amg_s_prec_mod.o amg_d_prec_mod.o amg_c_prec_mod.o amg_z_prec_mod.o
+amg_s_krm_solver.o: amg_s_prec_type.o  amg_s_base_solver_mod.o
+amg_d_krm_solver.o: amg_d_prec_type.o  amg_d_base_solver_mod.o
+amg_c_krm_solver.o: amg_c_prec_type.o  amg_c_base_solver_mod.o
+amg_z_krm_solver.o: amg_z_prec_type.o  amg_z_base_solver_mod.o
+
+amg_s_prec_mod.o: amg_s_krm_solver.o
+amg_d_prec_mod.o: amg_d_krm_solver.o
+amg_c_prec_mod.o: amg_c_krm_solver.o
+amg_z_prec_mod.o: amg_z_krm_solver.o
 
 $(SINNEROBJS) $(SOUTEROBJS): $(SMODOBJS)
 $(DINNEROBJS) $(DOUTEROBJS): $(DMODOBJS)
@@ -102,25 +116,27 @@ amg_d_prec_type.o: amg_d_onelev_mod.o
 amg_c_prec_type.o: amg_c_onelev_mod.o
 amg_z_prec_type.o: amg_z_onelev_mod.o
 
-amg_s_onelev_mod.o: amg_s_base_smoother_mod.o amg_s_dec_aggregator_mod.o
-amg_d_onelev_mod.o: amg_d_base_smoother_mod.o amg_d_dec_aggregator_mod.o
+amg_s_onelev_mod.o: amg_s_base_smoother_mod.o amg_s_dec_aggregator_mod.o amg_s_parmatch_aggregator_mod.o 
+amg_d_onelev_mod.o: amg_d_base_smoother_mod.o amg_d_dec_aggregator_mod.o amg_d_parmatch_aggregator_mod.o 
 amg_c_onelev_mod.o: amg_c_base_smoother_mod.o amg_c_dec_aggregator_mod.o
 amg_z_onelev_mod.o: amg_z_base_smoother_mod.o amg_z_dec_aggregator_mod.o
 
 amg_s_base_aggregator_mod.o: amg_base_prec_type.o
-amg_s_dec_aggregator_mod.o: amg_s_base_aggregator_mod.o
+amg_s_parmatch_aggregator_mod.o amg_s_dec_aggregator_mod.o: amg_s_base_aggregator_mod.o
 amg_s_hybrid_aggregator_mod.o amg_s_symdec_aggregator_mod.o: amg_s_dec_aggregator_mod.o
+amg_s_parmatch_aggregator_mod.o: amg_s_matchboxp_mod.o 
 
 amg_d_base_aggregator_mod.o: amg_base_prec_type.o
-amg_d_dec_aggregator_mod.o: amg_d_base_aggregator_mod.o
+amg_d_parmatch_aggregator_mod.o amg_d_dec_aggregator_mod.o: amg_d_base_aggregator_mod.o
 amg_d_hybrid_aggregator_mod.o amg_d_symdec_aggregator_mod.o: amg_d_dec_aggregator_mod.o
+amg_d_parmatch_aggregator_mod.o: amg_d_matchboxp_mod.o 
 
 amg_c_base_aggregator_mod.o: amg_base_prec_type.o
-amg_c_dec_aggregator_mod.o: amg_c_base_aggregator_mod.o
+amg_c_parmatch_aggregator_mod.o amg_c_dec_aggregator_mod.o: amg_c_base_aggregator_mod.o
 amg_c_hybrid_aggregator_mod.o amg_c_symdec_aggregator_mod.o: amg_c_dec_aggregator_mod.o
 
 amg_z_base_aggregator_mod.o: amg_base_prec_type.o
-amg_z_dec_aggregator_mod.o: amg_z_base_aggregator_mod.o
+amg_z_parmatch_aggregator_mod.o amg_z_dec_aggregator_mod.o: amg_z_base_aggregator_mod.o
 amg_z_hybrid_aggregator_mod.o amg_z_symdec_aggregator_mod.o: amg_z_dec_aggregator_mod.o
 
 amg_s_base_smoother_mod.o: amg_s_base_solver_mod.o
@@ -140,7 +156,7 @@ amg_z_base_ainv_mod.o: amg_z_base_solver_mod.o amg_base_ainv_mod.o
 amg_s_base_solver_mod.o amg_d_base_solver_mod.o amg_c_base_solver_mod.o amg_z_base_solver_mod.o: amg_base_prec_type.o
 
 amg_d_mumps_solver.o amg_d_gs_solver.o amg_d_id_solver.o amg_d_sludist_solver.o amg_d_slu_solver.o \
-amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
+amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o amg_d_jac_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
 
 #amg_d_ilu_fact_mod.o: amg_base_prec_type.o  amg_d_base_solver_mod.o
 #amg_d_ilu_solver.o amg_d_iluk_fact.o: amg_d_ilu_fact_mod.o
@@ -149,9 +165,11 @@ amg_d_jac_smoother.o: amg_d_diag_solver.o
 amg_dprecinit.o amg_dprecset.o: amg_d_diag_solver.o amg_d_ilu_solver.o \
 		amg_d_umf_solver.o amg_d_as_smoother.o amg_d_jac_smoother.o \
 	        amg_d_id_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o
+amg_d_poly_smoother.o: amg_d_base_smoother_mod.o amg_d_poly_coeff_mod.o
+amg_s_poly_smoother.o: amg_s_base_smoother_mod.o amg_d_poly_coeff_mod.o	
 
 amg_s_mumps_solver.o amg_s_gs_solver.o amg_s_id_solver.o amg_s_slu_solver.o \
-amg_s_diag_solver.o amg_s_ilu_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
+amg_s_diag_solver.o amg_s_ilu_solver.o amg_s_jac_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
 amg_s_ilu_fact_mod.o: amg_base_prec_type.o  amg_s_base_solver_mod.o
 amg_s_ilu_solver.o amg_s_iluk_fact.o: amg_s_ilu_fact_mod.o
 amg_s_as_smoother.o amg_s_jac_smoother.o: amg_s_base_smoother_mod.o
@@ -161,7 +179,7 @@ amg_sprecinit.o amg_sprecset.o: amg_s_diag_solver.o amg_s_ilu_solver.o \
 	        amg_s_id_solver.o amg_s_slu_solver.o
 
 amg_z_mumps_solver.o amg_z_gs_solver.o amg_z_id_solver.o amg_z_sludist_solver.o amg_z_slu_solver.o \
-amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
+amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o amg_z_jac_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
 amg_z_ilu_fact_mod.o: amg_base_prec_type.o  amg_z_base_solver_mod.o
 amg_z_ilu_solver.o amg_z_iluk_fact.o: amg_z_ilu_fact_mod.o
 amg_z_as_smoother.o amg_z_jac_smoother.o: amg_z_base_smoother_mod.o
@@ -171,7 +189,7 @@ amg_zprecinit.o amg_zprecset.o: amg_z_diag_solver.o amg_z_ilu_solver.o \
 	        amg_z_id_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o
 
 amg_c_mumps_solver.o amg_c_gs_solver.o amg_c_id_solver.o amg_c_sludist_solver.o amg_c_slu_solver.o \
-amg_c_diag_solver.o amg_c_ilu_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
+amg_c_diag_solver.o amg_c_ilu_solver.o amg_c_jac_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
 amg_c_ilu_fact_mod.o: amg_base_prec_type.o  amg_c_base_solver_mod.o
 amg_c_ilu_solver.o amg_c_iluk_fact.o: amg_c_ilu_fact_mod.o
 amg_c_as_smoother.o amg_c_jac_smoother.o: amg_c_base_smoother_mod.o
@@ -206,4 +224,4 @@ clean: implclean
 	/bin/rm -f $(OBJS) $(LOCAL_MODS) *$(.mod)
 
 implclean:
-	$(MAKE) -C impl clean
+	cd impl && $(MAKE) clean

amgprec/amg2amh.sh

@@ -1,13 +1,13 @@
 #!/bin/bash
-hn=mld_const.h
-fn=mld_base_prec_type.F90
+hn=amg_const.h
+fn=amg_base_prec_type.F90
 echo "/* This file was generated by a script using the $fn file as a basis. */" > $hn
-echo '#ifndef MLD_CONST_H_' >> $hn
-echo '#define MLD_CONST_H_' >> $hn
+echo '#ifndef AMG_CONST_H_' >> $hn
+echo '#define AMG_CONST_H_' >> $hn
 echo '#ifdef __cplusplus' >> $hn
 echo 'extern "C" { ' >> $hn
 echo '#endif' >> $hn
-cat $fn | sed 's/=/= (/g;s/$/ )/g' | grep '\(^  *!\)\|parameter' | grep  '_\>'  | sed 's/^\s*//g;s/^.*:://g;s/\s*=\s*/ /g' | sed  's/,/\n/g;s/^ //g'  | tr '[:lower:]' '[:upper:]' | grep ^MLD | sed 's/^/#define /g' >> $hn
+cat $fn | sed 's/=/= (/g;s/$/ )/g' | grep '\(^  *!\)\|parameter' | grep  '_\>'  | sed 's/^\s*//g;s/^.*:://g;s/\s*=\s*/ /g' | sed  's/,/\n/g;s/^ //g'  | tr '[:lower:]' '[:upper:]' | grep ^AMG | sed 's/^/#define /g' >> $hn
 echo '#ifdef __cplusplus' >> $hn
 echo '}' >> $hn
 echo '#endif' >> $hn

amgprec/amg_c_ainv_solver.F90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -55,13 +58,13 @@ module amg_c_ainv_solver
     procedure, pass(sv) :: check   => amg_c_ainv_solver_check
     procedure, pass(sv) :: build   => amg_c_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_c_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_c_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_c_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_c_ainv_solver_csetr
-    procedure, pass(sv) :: seti    => amg_c_ainv_solver_seti
-    procedure, pass(sv) :: setc    => amg_c_ainv_solver_setc
-    procedure, pass(sv) :: setr    => amg_c_ainv_solver_setr
-    generic, public :: set => seti, setr, setc
+!!$    procedure, pass(sv) :: seti    => amg_c_ainv_solver_seti
+!!$    procedure, pass(sv) :: setc    => amg_c_ainv_solver_setc
+!!$    procedure, pass(sv) :: setr    => amg_c_ainv_solver_setr
     procedure, pass(sv) :: descr   => amg_c_ainv_solver_descr
     procedure, pass(sv) :: default => c_ainv_solver_default
     procedure, nopass   :: stringval  => c_ainv_stringval
@@ -83,6 +86,16 @@ module amg_c_ainv_solver
     end subroutine amg_c_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_ainv_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_c_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -159,44 +172,44 @@ module amg_c_ainv_solver
     end subroutine amg_c_ainv_solver_csetr
   end interface
 
-  interface
-    subroutine amg_c_ainv_solver_setc(sv,what,val,info)
-      import :: amg_c_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_c_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      character(len=*), intent(in)                 :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_c_ainv_solver_setc
-  end interface
+!!$  interface
+!!$    subroutine amg_c_ainv_solver_setc(sv,what,val,info)
+!!$      import :: amg_c_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_c_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      character(len=*), intent(in)                 :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_c_ainv_solver_setc
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_c_ainv_solver_seti(sv,what,val,info)
+!!$      import :: amg_c_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_c_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      integer(psb_ipk_), intent(in)                :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_c_ainv_solver_seti
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_c_ainv_solver_setr(sv,what,val,info)
+!!$      import :: amg_c_ainv_solver_type, psb_ipk_, psb_spk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_c_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      real(psb_spk_), intent(in)                   :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_c_ainv_solver_setr
+!!$  end interface
 
   interface
-    subroutine amg_c_ainv_solver_seti(sv,what,val,info)
-      import :: amg_c_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_c_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_c_ainv_solver_seti
-  end interface
-
-  interface
-    subroutine amg_c_ainv_solver_setr(sv,what,val,info)
-      import :: amg_c_ainv_solver_type, psb_ipk_, psb_spk_
-      Implicit none
-      ! Arguments
-      class(amg_c_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_spk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_c_ainv_solver_setr
-  end interface
-
-  interface
-    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -206,7 +219,7 @@ module amg_c_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_ainv_solver_descr
   end interface
 

amgprec/amg_c_as_smoother.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -396,21 +396,23 @@ contains
   end subroutine c_as_smoother_default
 
 
-  subroutine c_as_smoother_descr(sm,info,iout,coarse)
+  subroutine c_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_c_base_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -126,7 +126,7 @@ module amg_c_base_aggregator_mod
            & psb_c_coo_sparse_mat, amg_sml_parms, psb_spk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_c_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_sml_parms), intent(inout)         :: parms 
       type(psb_c_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -144,7 +144,7 @@ module amg_c_base_aggregator_mod
            & psb_c_coo_sparse_mat, amg_sml_parms, psb_spk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_c_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_sml_parms), intent(inout)         :: parms 
       type(psb_c_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_c_base_aggregator_xt_desc
 
-  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_base_aggregator_descr

amgprec/amg_c_base_ainv_mod.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions

amgprec/amg_c_base_smoother_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -272,7 +272,7 @@ module amg_c_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_c_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_c_base_smoother_descr
   end interface
   

amgprec/amg_c_base_solver_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -270,7 +270,7 @@ module amg_c_base_solver_mod
   end interface
   
   interface
-    subroutine amg_c_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_c_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_c_base_solver_descr
   end interface 
   

amgprec/amg_c_dec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_c_dec_aggregator_fmt
   
-  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_dec_aggregator_descr

amgprec/amg_c_diag_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -219,7 +219,7 @@ contains
 
   end subroutine c_diag_solver_free
 
-  subroutine c_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_c_l1_diag_solver
   
 contains
 
-  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_c_gs_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -433,20 +433,22 @@ contains
     return
   end subroutine c_gs_solver_free
 
-  subroutine c_gs_solver_descr(sv,info,iout,coarse)
+  subroutine c_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function c_gs_solver_is_iterative
     
-  subroutine c_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine c_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_c_hybrid_aggregator_mod.F90

@@ -2,7 +2,7 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
 !    (C) Copyright 2020 
 !  

amgprec/amg_c_id_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -157,7 +157,7 @@ contains
     return
   end subroutine c_id_solver_free
 
-  subroutine c_id_solver_descr(sv,info,iout,coarse)
+  subroutine c_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_c_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_c_ilu_fact_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   

amgprec/amg_c_ilu_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_c_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = szero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',szero,is_legal_s_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine c_ilu_solver_free
 
-  subroutine c_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine c_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_c_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_c_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function c_ilu_solver_get_id
 
   function c_ilu_solver_get_wrksize() result(val)

amgprec/amg_c_inner_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -39,7 +39,7 @@
 !
 ! Module: amg_inner_mod
 !
-!  This module defines the interfaces to inner MLD2P4 routines.
+!  This module defines the interfaces to inner AMG4PSBLAS routines.
 !  The interfaces  of the user level routines are defined in amg_prec_mod.f90.
 !
 module amg_c_inner_mod

amgprec/amg_c_invk_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,10 +52,9 @@ module amg_c_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invk_solver_check
     procedure, pass(sv) :: clone   => amg_c_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invk_solver_cseti
-    procedure, pass(sv) :: seti    => amg_c_invk_solver_seti
-    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_c_invk_solver_descr
     procedure, pass(sv) :: default => c_invk_solver_default
   end type amg_c_invk_solver_type
@@ -72,6 +74,17 @@ module amg_c_invk_solver
     end subroutine amg_c_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invk_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -122,7 +135,7 @@ module amg_c_invk_solver
   end interface
 
   interface
-    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -132,22 +145,10 @@ module amg_c_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_invk_solver_descr
   end interface
 
-  interface
-    subroutine amg_c_invk_solver_seti(sv,what,val,info)
-      import :: amg_c_invk_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_c_invk_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_c_invk_solver_seti
-  end interface
-
 contains
 
   subroutine c_invk_solver_default(sv)

amgprec/amg_c_invt_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,12 +52,10 @@ module amg_c_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invt_solver_check
     procedure, pass(sv) :: clone   => amg_c_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_c_invt_solver_csetr
-    procedure, pass(sv) :: seti    => amg_c_invt_solver_seti
-    procedure, pass(sv) :: setr    => amg_c_invt_solver_setr
-    generic, public     :: set     => seti, setr
     procedure, pass(sv) :: descr   => amg_c_invt_solver_descr
     procedure, pass(sv) :: default => c_invt_solver_default
   end type amg_c_invt_solver_type
@@ -73,6 +74,17 @@ module amg_c_invt_solver
     end subroutine amg_c_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invt_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -134,44 +146,21 @@ module amg_c_invt_solver
   end interface
 
   interface
-    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_c_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_c_invt_solver_descr
   end interface
 
-  interface
-    subroutine amg_c_invt_solver_setr(sv,what,val,info)
-      import :: amg_c_invt_solver_type, psb_spk_, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_c_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_spk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_c_invt_solver_setr
-  end interface
-
-  interface
-    subroutine amg_c_invt_solver_seti(sv,what,val,info)
-      import :: amg_c_invt_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_c_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine
-  end interface
-
 contains
 
   subroutine c_invt_solver_default(sv)

amgprec/amg_c_jac_smoother.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -219,12 +219,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_jac_smoother_type, psb_ipk_
       class(amg_c_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_c_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_l1_jac_smoother_type, psb_ipk_
       class(amg_c_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_c_l1_jac_smoother_descr
   end interface
 

amgprec/amg_c_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_c_jac_solver_mod.f90
+!
+! Module: amg_c_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_c_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_c_jac_solver
+
+  use amg_c_base_solver_mod
+
+  type, extends(amg_c_base_solver_type) :: amg_c_jac_solver_type
+    type(psb_cspmat_type)      :: a
+    type(psb_c_vect_type), allocatable :: dv
+    complex(psb_spk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_spk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_c_jac_solver_dmp
+    procedure, pass(sv) :: check   => c_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_c_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_c_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_c_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_c_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_c_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_c_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_c_jac_solver_apply
+    procedure, pass(sv) :: free    => c_jac_solver_free
+    procedure, pass(sv) :: cseti   => c_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => c_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => c_jac_solver_csetr
+    procedure, pass(sv) :: descr   => c_jac_solver_descr
+    procedure, pass(sv) :: default => c_jac_solver_default
+    procedure, pass(sv) :: sizeof  => c_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => c_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => c_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => c_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => c_jac_solver_get_id
+    procedure, nopass   :: is_iterative => c_jac_solver_is_iterative
+  end type amg_c_jac_solver_type
+
+  type, extends(amg_c_jac_solver_type) :: amg_c_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_c_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => c_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => c_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => c_l1_jac_solver_get_id
+  end type amg_c_l1_jac_solver_type
+
+
+  private :: c_jac_solver_bld, c_jac_solver_apply, &
+       &  c_jac_solver_free,   &
+       &  c_jac_solver_descr,  c_jac_solver_sizeof, &
+       &  c_jac_solver_default, c_jac_solver_dmp, &
+       &  c_jac_solver_apply_vect, c_jac_solver_get_nzeros, &
+       &  c_jac_solver_get_fmt, c_jac_solver_check,&
+       &  c_jac_solver_is_iterative, &
+       &  c_jac_solver_get_id, c_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_c_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      type(psb_c_vect_type),intent(inout)         :: x
+      type(psb_c_vect_type),intent(inout)         :: y
+      complex(psb_spk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      complex(psb_spk_),target, intent(inout)         :: work(:)
+      type(psb_c_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_c_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_c_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      complex(psb_spk_),intent(inout)         :: x(:)
+      complex(psb_spk_),intent(inout)         :: y(:)
+      complex(psb_spk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      complex(psb_spk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      complex(psb_spk_),intent(inout), optional :: initu(:)
+    end subroutine amg_c_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_cspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_c_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_cspmat_type), intent(in), target, optional :: b
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_c_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_c_l1_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_cspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_c_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_cspmat_type), intent(in), target, optional :: b
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_c_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_c_jac_solver_type, psb_spk_, &
+           & psb_c_base_sparse_mat, psb_c_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_c_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_c_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_c_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_c_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_c_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_c_jac_solver_type, psb_c_vect_type, psb_spk_, &
+           & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_c_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_c_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_c_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_base_solver_type, amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout)               :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_c_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_c_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+!!$           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+!!$           & amg_c_base_solver_type, amg_c_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_c_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_c_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_c_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_base_solver_type, amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      class(amg_c_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_c_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_c_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
+           & amg_c_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_c_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_c_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine c_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine c_jac_solver_default
+
+  subroutine c_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='c_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine c_jac_solver_check
+
+  subroutine c_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_cseti
+
+  subroutine c_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='c_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_csetc
+  
+  subroutine c_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_spk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_csetr
+
+  subroutine c_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='c_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_free
+
+  subroutine c_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_c_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_jac_solver_descr
+
+  function c_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function c_jac_solver_get_nzeros
+
+  function c_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_c_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function c_jac_solver_sizeof
+
+  function c_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function c_jac_solver_get_fmt
+
+  function c_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function c_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function c_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function c_jac_solver_is_iterative
+    
+  function c_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function c_jac_solver_get_wrksize
+
+  subroutine c_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_c_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine c_l1_jac_solver_descr
+
+  function c_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function c_l1_jac_solver_get_fmt
+
+  function c_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function c_l1_jac_solver_get_id
+  
+end module amg_c_jac_solver

amgprec/amg_c_krm_solver.f90

@@ -1,11 +1,14 @@
-!
-!
+!  
+!   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!
-!    (C) Copyright 2020
-!
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !        Salvatore Filippone
 !        Pasqua D'Ambra
 !        Fabio Durastante
@@ -52,14 +55,14 @@
 !      2. Redistributions in binary form must reproduce the above copyright
 !         notice, this list of conditions, and the following disclaimer in the
 !         documentation and/or other materials provided with the distribution.
-!      3. The name of the MLD2P4 group or the names of its contributors may
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
 !
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
 !    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 !    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 !    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
@@ -70,16 +73,16 @@
 !
 !
 !
-! File: amg_c_rkr_solver_mod.f90
+! File: amg_c_krm_solver_mod.f90
 !
-! Module: amg_c_rkr_solver_mod
+! Module: amg_c_krm_solver_mod
 !
-module amg_c_rkr_solver
+module amg_c_krm_solver
 
   use amg_c_base_solver_mod
   use amg_c_prec_type
 
-  type, extends(amg_c_base_solver_type) :: amg_c_rkr_solver_type
+  type, extends(amg_c_base_solver_type) :: amg_c_krm_solver_type
     !
     logical               :: global
     character(len=16)     :: method, kprec, sub_solve
@@ -94,46 +97,46 @@ module amg_c_rkr_solver
   contains
     !
     !
-    procedure, pass(sv) :: dump    => c_rkr_solver_dmp
-    procedure, pass(sv) :: check   => c_rkr_solver_check
-    procedure, pass(sv) :: clone   => c_rkr_solver_clone
-    procedure, pass(sv) :: clone_settings   => c_rkr_solver_clone_settings
-    procedure, pass(sv) :: cnv     => c_rkr_solver_cnv
-    procedure, pass(sv) :: apply_v => amg_c_rkr_solver_apply_vect
-    procedure, pass(sv) :: apply_a => amg_c_rkr_solver_apply
-    procedure, pass(sv) :: clear_data  => c_rkr_solver_clear_data
-    procedure, pass(sv) :: free    => c_rkr_solver_free
-    procedure, pass(sv) :: cseti   => c_rkr_solver_cseti
-    procedure, pass(sv) :: csetc   => c_rkr_solver_csetc
-    procedure, pass(sv) :: csetr   => c_rkr_solver_csetr
-    procedure, pass(sv) :: sizeof  => c_rkr_solver_sizeof
-    procedure, pass(sv) :: get_nzeros => c_rkr_solver_get_nzeros
-    !procedure, nopass   :: get_id  => c_rkr_solver_get_id
-    procedure, pass(sv) :: is_global => c_rkr_solver_is_global
-    procedure, nopass   :: is_iterative => c_rkr_solver_is_iterative
+    procedure, pass(sv) :: dump    => c_krm_solver_dmp
+    procedure, pass(sv) :: check   => c_krm_solver_check
+    procedure, pass(sv) :: clone   => c_krm_solver_clone
+    procedure, pass(sv) :: clone_settings   => c_krm_solver_clone_settings
+    procedure, pass(sv) :: cnv     => c_krm_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_c_krm_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_c_krm_solver_apply
+    procedure, pass(sv) :: clear_data  => c_krm_solver_clear_data
+    procedure, pass(sv) :: free    => c_krm_solver_free
+    procedure, pass(sv) :: cseti   => c_krm_solver_cseti
+    procedure, pass(sv) :: csetc   => c_krm_solver_csetc
+    procedure, pass(sv) :: csetr   => c_krm_solver_csetr
+    procedure, pass(sv) :: sizeof  => c_krm_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => c_krm_solver_get_nzeros
+    !procedure, nopass   :: get_id  => c_krm_solver_get_id
+    procedure, pass(sv) :: is_global => c_krm_solver_is_global
+    procedure, nopass   :: is_iterative => c_krm_solver_is_iterative
 
 
     !
     ! These methods are specific for the new solver type
     ! and therefore need to be overridden
     !
-    procedure, pass(sv) :: descr   => c_rkr_solver_descr
-    procedure, pass(sv) :: default => c_rkr_solver_default
-    procedure, pass(sv) :: build   => amg_c_rkr_solver_bld
-    procedure, nopass   :: get_fmt => c_rkr_solver_get_fmt
-  end type amg_c_rkr_solver_type
+    procedure, pass(sv) :: descr   => c_krm_solver_descr
+    procedure, pass(sv) :: default => c_krm_solver_default
+    procedure, pass(sv) :: build   => amg_c_krm_solver_bld
+    procedure, nopass   :: get_fmt => c_krm_solver_get_fmt
+  end type amg_c_krm_solver_type
 
 
-  private ::  c_rkr_solver_get_fmt, c_rkr_solver_descr, c_rkr_solver_default
+  private ::  c_krm_solver_get_fmt, c_krm_solver_descr, c_krm_solver_default
 
   interface
-    subroutine amg_c_rkr_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_c_krm_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
          & trans,work,wv,info,init,initu)
-      import :: psb_desc_type, amg_c_rkr_solver_type, psb_c_vect_type, psb_spk_, &
+      import :: psb_desc_type, amg_c_krm_solver_type, psb_c_vect_type, psb_spk_, &
            & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)             :: desc_data
-      class(amg_c_rkr_solver_type), intent(inout) :: sv
+      class(amg_c_krm_solver_type), intent(inout) :: sv
       type(psb_c_vect_type),intent(inout)         :: x
       type(psb_c_vect_type),intent(inout)         :: y
       complex(psb_spk_),intent(in)                    :: alpha,beta
@@ -143,17 +146,17 @@ module amg_c_rkr_solver
       integer(psb_ipk_), intent(out)                :: info
       character, intent(in), optional                :: init
       type(psb_c_vect_type),intent(inout), optional   :: initu
-    end subroutine amg_c_rkr_solver_apply_vect
+    end subroutine amg_c_krm_solver_apply_vect
   end interface
 
   interface
-    subroutine amg_c_rkr_solver_apply(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_c_krm_solver_apply(alpha,sv,x,beta,y,desc_data,&
          & trans,work,info,init,initu)
-      import :: psb_desc_type, amg_c_rkr_solver_type, psb_c_vect_type, psb_spk_, &
+      import :: psb_desc_type, amg_c_krm_solver_type, psb_c_vect_type, psb_spk_, &
            & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)      :: desc_data
-      class(amg_c_rkr_solver_type), intent(inout) :: sv
+      class(amg_c_krm_solver_type), intent(inout) :: sv
       complex(psb_spk_),intent(inout)         :: x(:)
       complex(psb_spk_),intent(inout)         :: y(:)
       complex(psb_spk_),intent(in)            :: alpha,beta
@@ -162,24 +165,24 @@ module amg_c_rkr_solver
       integer(psb_ipk_), intent(out)        :: info
       character, intent(in), optional       :: init
       complex(psb_spk_),intent(inout), optional :: initu(:)
-    end subroutine amg_c_rkr_solver_apply
+    end subroutine amg_c_krm_solver_apply
   end interface
 
   interface
-    subroutine amg_c_rkr_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
-      import :: psb_desc_type, amg_c_rkr_solver_type, psb_c_vect_type, psb_spk_, &
+    subroutine amg_c_krm_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_c_krm_solver_type, psb_c_vect_type, psb_spk_, &
            & psb_cspmat_type, psb_c_base_sparse_mat, psb_c_base_vect_type,&
            & psb_ipk_, psb_i_base_vect_type
       implicit none
       type(psb_cspmat_type), intent(in), target           :: a
       Type(psb_desc_type), Intent(inout)                  :: desc_a
-      class(amg_c_rkr_solver_type), intent(inout)         :: sv
+      class(amg_c_krm_solver_type), intent(inout)         :: sv
       integer(psb_ipk_), intent(out)                      :: info
       type(psb_cspmat_type), intent(in), target, optional :: b
       class(psb_c_base_sparse_mat), intent(in), optional  :: amold
       class(psb_c_base_vect_type), intent(in), optional   :: vmold
       class(psb_i_base_vect_type), intent(in), optional   :: imold
-    end subroutine amg_c_rkr_solver_bld
+    end subroutine amg_c_krm_solver_bld
   end interface
 
 
@@ -187,12 +190,12 @@ contains
 
   !
   !
-  subroutine c_rkr_solver_default(sv)
+  subroutine c_krm_solver_default(sv)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
 
     sv%method     = 'bicgstab'
     sv%kprec      = 'bjac'
@@ -207,42 +210,42 @@ contains
     sv%global = .false.
 
     return
-  end subroutine c_rkr_solver_default
+  end subroutine c_krm_solver_default
 
-  function c_rkr_solver_get_nzeros(sv) result(val)
+  function c_krm_solver_get_nzeros(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(in) :: sv
+    class(amg_c_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%get_nzeros()
 
     return
-  end function c_rkr_solver_get_nzeros
+  end function c_krm_solver_get_nzeros
 
-  function c_rkr_solver_sizeof(sv) result(val)
+  function c_krm_solver_sizeof(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(in) :: sv
+    class(amg_c_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%sizeof() + sv%desc_local%sizeof() + sv%a_local%sizeof()
 
     return
-  end function c_rkr_solver_sizeof
+  end function c_krm_solver_sizeof
 
 
-  subroutine c_rkr_solver_check(sv,info)
+  subroutine c_krm_solver_check(sv,info)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_) :: err_act
-    character(len=20) :: name='c_rkr_solver_check'
+    character(len=20) :: name='c_krm_solver_check'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -256,36 +259,36 @@ contains
 9999 call psb_error_handler(err_act)
     return
 
-  end subroutine c_rkr_solver_check
+  end subroutine c_krm_solver_check
 
-  subroutine c_rkr_solver_cseti(sv,what,val,info,idx)
+  subroutine c_krm_solver_cseti(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     integer(psb_ipk_), intent(in)                 :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='c_rkr_solver_cseti'
+    character(len=20)  :: name='c_krm_solver_cseti'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
     select case(psb_toupper(trim(what)))
-    case('RKR_IRST')
+    case('KRM_IRST')
       sv%irst = val
-    case('RKR_ISTOPC')
+    case('KRM_ISTOPC')
       sv%istopc = val
-    case('RKR_ITMAX')
+    case('KRM_ITMAX')
       sv%itmax = val
-    case('RKR_ITRACE')
+    case('KRM_ITRACE')
       sv%itrace = val
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%i_sub_solve = val
-    case('RKR_FILLIN')
+    case('KRM_FILLIN')
       sv%fillin = val
     case default
       call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
@@ -296,33 +299,33 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine c_rkr_solver_cseti
+  end subroutine c_krm_solver_cseti
 
-  subroutine c_rkr_solver_csetc(sv,what,val,info,idx)
+  subroutine c_krm_solver_csetc(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     character(len=*), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act, ival
-    character(len=20)  :: name='c_rkr_solver_csetc'
+    character(len=20)  :: name='c_krm_solver_csetc'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
 
     select case(psb_toupper(trim(what)))
-    case('RKR_METHOD')
+    case('KRM_METHOD')
       sv%method = psb_toupper(trim(val))
-    case('RKR_KPREC')
+    case('KRM_KPREC')
       sv%kprec = psb_toupper(trim(val))
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%sub_solve = psb_toupper(trim(val))
-    case('RKR_GLOBAL')
+    case('KRM_GLOBAL')
       select case(psb_toupper(trim(val)))
       case('LOCAL','FALSE')
         sv%global = .false.
@@ -345,26 +348,26 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine c_rkr_solver_csetc
+  end subroutine c_krm_solver_csetc
 
-  subroutine c_rkr_solver_csetr(sv,what,val,info,idx)
+  subroutine c_krm_solver_csetr(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     real(psb_spk_), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='c_rkr_solver_csetr'
+    character(len=20)  :: name='c_krm_solver_csetr'
 
     call psb_erractionsave(err_act)
     info = psb_success_
 
     select case(psb_toupper(what))
-    case('RKR_EPS')
+    case('KRM_EPS')
       sv%eps = val
     case default
       call sv%amg_c_base_solver_type%set(what,val,info,idx=idx)
@@ -375,18 +378,18 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine c_rkr_solver_csetr
+  end subroutine c_krm_solver_csetr
 
-  subroutine c_rkr_solver_clear_data(sv,info)
+  subroutine c_krm_solver_clear_data(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_) :: err_act
     type(psb_ctxt_type)  :: l_ctxt
-    character(len=20)  :: name='c_rkr_solver_free'
+    character(len=20)  :: name='c_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -403,19 +406,19 @@ contains
     nullify(sv%a)
     call psb_erractionrestore(err_act)
     return
-  end subroutine c_rkr_solver_clear_data
+  end subroutine c_krm_solver_clear_data
 
 
-  subroutine c_rkr_solver_free(sv,info)
+  subroutine c_krm_solver_free(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout) :: sv
+    class(amg_c_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_)  :: err_act
     type(psb_ctxt_type) :: l_ctxt
-    character(len=20)  :: name='c_rkr_solver_free'
+    character(len=20)  :: name='c_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,29 +427,31 @@ contains
 
     call psb_erractionrestore(err_act)
     return
-  end subroutine c_rkr_solver_free
+  end subroutine c_krm_solver_free
 
-  function c_rkr_solver_get_fmt() result(val)
+  function c_krm_solver_get_fmt() result(val)
     implicit none
     character(len=32)  :: val
 
-    val = "RKR solver"
-  end function c_rkr_solver_get_fmt
+    val = "KRM solver"
+  end function c_krm_solver_get_fmt
 
-  subroutine c_rkr_solver_descr(sv,info,iout,coarse)
+  subroutine c_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(in) :: sv
+    class(amg_c_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
-    character(len=20), parameter :: name='amg_c_rkr_solver_descr'
+    character(len=20), parameter :: name='amg_c_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,34 +460,33 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine c_rkr_solver_descr
+  end subroutine c_krm_solver_descr
 
-  subroutine c_rkr_solver_cnv(sv,info,amold,vmold,imold)
+  subroutine c_krm_solver_cnv(sv,info,amold,vmold,imold)
     implicit none
-    class(amg_c_rkr_solver_type), intent(inout)         :: sv
+    class(amg_c_krm_solver_type), intent(inout)         :: sv
     integer(psb_ipk_), intent(out)                      :: info
     class(psb_c_base_sparse_mat), intent(in), optional  :: amold
     class(psb_c_base_vect_type), intent(in), optional   :: vmold
@@ -490,13 +494,13 @@ contains
 
     call sv%prec%cnv(info,amold=amold,vmold=vmold,imold=imold)
 
-  end subroutine c_rkr_solver_cnv
+  end subroutine c_krm_solver_cnv
 
-  subroutine c_rkr_solver_clone(sv,svout,info)
+  subroutine c_krm_solver_clone(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout)               :: sv
+    class(amg_c_krm_solver_type), intent(inout)               :: sv
     class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
@@ -505,7 +509,7 @@ contains
     call svout%free(info)
     allocate(svout,stat=info,mold=sv)
     select type(so=>svout)
-    class is(amg_c_rkr_solver_type)
+    class is(amg_c_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -524,21 +528,21 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine c_rkr_solver_clone
+  end subroutine c_krm_solver_clone
 
 
-  subroutine c_rkr_solver_clone_settings(sv,svout,info)
+  subroutine c_krm_solver_clone_settings(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_c_rkr_solver_type), intent(inout)               :: sv
+    class(amg_c_krm_solver_type), intent(inout)               :: sv
     class(amg_c_base_solver_type), intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
     info = psb_success_
 
     select type(so=>svout)
-    class is(amg_c_rkr_solver_type)
+    class is(amg_c_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -554,11 +558,11 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine c_rkr_solver_clone_settings
+  end subroutine c_krm_solver_clone_settings
 
-  subroutine c_rkr_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+  subroutine c_krm_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
     implicit none
-    class(amg_c_rkr_solver_type), intent(in) :: sv
+    class(amg_c_krm_solver_type), intent(in) :: sv
     type(psb_desc_type), intent(in)             :: desc
     integer(psb_ipk_), intent(in)              :: level
     integer(psb_ipk_), intent(out)             :: info
@@ -568,23 +572,23 @@ contains
 
     call sv%prec%dump(info,prefix=prefix,head=head)
 
-  end subroutine c_rkr_solver_dmp
+  end subroutine c_krm_solver_dmp
   !
-  ! Notify whether RKR is used as a global solver
+  ! Notify whether KRM is used as a global solver
   !
-  function c_rkr_solver_is_global(sv) result(val)
+  function c_krm_solver_is_global(sv) result(val)
     implicit none
-    class(amg_c_rkr_solver_type), intent(in) :: sv
+    class(amg_c_krm_solver_type), intent(in) :: sv
     logical  :: val
 
     val = (sv%global)
-  end function c_rkr_solver_is_global
+  end function c_krm_solver_is_global
   !
-  function c_rkr_solver_is_iterative() result(val)
+  function c_krm_solver_is_iterative() result(val)
     implicit none
     logical  :: val
 
     val = .true.
-  end function c_rkr_solver_is_iterative
+  end function c_krm_solver_is_iterative
 
-end module amg_c_rkr_solver
+end module amg_c_krm_solver

amgprec/amg_c_mumps_solver.F90

@@ -3,9 +3,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -78,7 +78,8 @@ module amg_c_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine c_mumps_solver_finalize(sv)
 
 end subroutine c_mumps_solver_finalize
 
-subroutine c_mumps_solver_descr(sv,info,iout,coarse)
+subroutine c_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_c_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine c_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_c_onelev_mod.f90

@@ -1,15 +1,15 @@
-!  
-!   
+!
+!
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!    
-!    (C) Copyright 2020 
-!  
-!        Salvatore Filippone  
-!        Pasqua D'Ambra   
-!        Fabio Durastante        
-!   
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Fabio Durastante
+!
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
 !    are met:
@@ -21,7 +21,7 @@
 !      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
-!   
+!
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
@@ -33,22 +33,22 @@
 !    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 !    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 !    POSSIBILITY OF SUCH DAMAGE.
-!   
-!  
+!
+!
 ! File: amg_c_onelev_mod.f90
 !
 ! Module: amg_c_onelev_mod
 !
-!  This module defines: 
+!  This module defines:
 !  - the amg_c_onelev_type data structure containing one level
 !    of a multilevel  preconditioner and related
 !    data structures;
 !
 !  It contains routines for
-!  - Building and applying; 
+!  - Building and applying;
 !  - checking if the preconditioner is correctly defined;
 !  - printing a	description of the preconditioner;
-!  - deallocating the preconditioner data structure.  
+!  - deallocating the preconditioner data structure.
 !
 
 module amg_c_onelev_mod
@@ -56,6 +56,7 @@ module amg_c_onelev_mod
   use amg_base_prec_type
   use amg_c_base_smoother_mod
   use amg_c_dec_aggregator_mod
+
   use psb_base_mod, only : psb_cspmat_type, psb_c_vect_type, &
        & psb_c_base_vect_type, psb_lcspmat_type,  psb_clinmap_type, psb_spk_, &
        & psb_ipk_, psb_epk_, psb_lpk_, psb_desc_type, psb_i_base_vect_type, &
@@ -73,16 +74,16 @@ module amg_c_onelev_mod
   !    class(amg_c_base_smoother_type), pointer       :: sm2 => null()
   !    class(amg_cmlprec_wrk_type), allocatable       :: wrk
   !    class(amg_c_base_aggregator_type), allocatable :: aggr
-  !    type(amg_sml_parms)             :: parms 
+  !    type(amg_sml_parms)             :: parms
   !    type(psb_cspmat_type)           :: ac
   !    type(psb_cesc_type)             :: desc_ac
-  !    type(psb_cspmat_type), pointer  :: base_a    => null() 
-  !    type(psb_desc_type), pointer    :: base_desc => null() 
+  !    type(psb_cspmat_type), pointer  :: base_a    => null()
+  !    type(psb_desc_type), pointer    :: base_desc => null()
   !    type(psb_clinmap_type)          :: map
   !  end type amg_conelev_type
   !
   !  Note that s denotes the kind of the real data type to be chosen
-  !  according to single/double precision version of MLD2P4.
+  !  according to single/double precision version of AMG4PSBLAS.
   !
   !   sm,sm2a      -  class(amg_c_base_smoother_type), allocatable
   !                   The current level pre- and post-smooother.
@@ -93,7 +94,7 @@ module amg_c_onelev_mod
   !                   Workspace for application of preconditioner; may be
   !                   pre-allocated to save time in the application within a
   !                   Krylov solver.
-  !   aggr         -  class(amg_c_base_aggregator_type), allocatable 
+  !   aggr         -  class(amg_c_base_aggregator_type), allocatable
   !                   The aggregator object: holds the algorithmic choices and
   !                   (possibly) additional data for building the aggregation.
   !   parms        -  type(amg_sml_parms)
@@ -104,7 +105,7 @@ module amg_c_onelev_mod
   !                   The communication descriptor associated to the matrix
   !                   stored in ac.
   !   base_a       -  type(psb_cspmat_type), pointer.
-  !                   Pointer (really a pointer!) to the local part of the current 
+  !                   Pointer (really a pointer!) to the local part of the current
   !                   matrix (so we have a unified treatment of residuals).
   !                   We need this to avoid passing explicitly the current matrix
   !                   to the routine which applies the preconditioner.
@@ -115,13 +116,13 @@ module amg_c_onelev_mod
   !                   vector spaces associated to the index spaces of the previous
   !                   and current levels.
   !
-  !   Methods:  
+  !   Methods:
   !     Most methods follow the encapsulation hierarchy: they take whatever action
   !     is appropriate for the current object, then call the corresponding method for
   !     the contained object.
   !     As an example: the descr() method prints out a description of the
   !     level. It starts by invoking the descr() method of the parms object,
-  !     then calls the descr() method of the smoother object. 
+  !     then calls the descr() method of the smoother object.
   !
   !    descr      -   Prints a description of the object.
   !    default    -   Set default values
@@ -130,14 +131,14 @@ module amg_c_onelev_mod
   !                   it is passed to the smoother object for further processing.
   !    check        -  Sanity checks.
   !    sizeof       -  Total memory occupation in bytes
-  !    get_nzeros   -  Number of nonzeros 
+  !    get_nzeros   -  Number of nonzeros
   !    get_wrksz    -  How many workspace vector does apply_vect need
   !    allocate_wrk -  Allocate auxiliary workspace
   !    free_wrk     -  Free     auxiliary workspace
   !    bld_tprol    -  Invoke the aggr method to build the tentative prolongator
-  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix. 
+  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix.
+  !
   !
-  !  
   type amg_cmlprec_wrk_type
     complex(psb_spk_), allocatable  :: tx(:), ty(:), x2l(:), y2l(:)
     type(psb_c_vect_type)  :: vtx, vty, vx2l, vy2l
@@ -148,10 +149,10 @@ module amg_c_onelev_mod
     procedure, pass(wk) :: clone      => c_wrk_clone
     procedure, pass(wk) :: move_alloc => c_wrk_move_alloc
     procedure, pass(wk) :: cnv        => c_wrk_cnv
-    procedure, pass(wk) :: sizeof     => c_wrk_sizeof    
+    procedure, pass(wk) :: sizeof     => c_wrk_sizeof
   end type amg_cmlprec_wrk_type
   private :: c_wrk_alloc, c_wrk_free, &
-       & c_wrk_clone, c_wrk_move_alloc, c_wrk_cnv, c_wrk_sizeof    
+       & c_wrk_clone, c_wrk_move_alloc, c_wrk_cnv, c_wrk_sizeof
 
   type amg_c_remap_data_type
     type(psb_cspmat_type)          :: ac_pre_remap
@@ -161,19 +162,19 @@ module amg_c_onelev_mod
   contains
     procedure, pass(rmp) :: clone   => c_remap_data_clone
   end type amg_c_remap_data_type
-  
+
   type amg_c_onelev_type
     class(amg_c_base_smoother_type), allocatable   :: sm, sm2a
     class(amg_c_base_smoother_type), pointer       :: sm2 => null()
     class(amg_cmlprec_wrk_type), allocatable       :: wrk
     class(amg_c_base_aggregator_type), allocatable :: aggr
-    type(amg_sml_parms)              :: parms 
+    type(amg_sml_parms)              :: parms
     type(psb_cspmat_type)            :: ac
     integer(psb_ipk_)                :: ac_nz_loc
     integer(psb_lpk_)                :: ac_nz_tot
     type(psb_desc_type)              :: desc_ac
-    type(psb_cspmat_type), pointer   :: base_a    => null() 
-    type(psb_desc_type), pointer     :: base_desc => null() 
+    type(psb_cspmat_type), pointer   :: base_a    => null()
+    type(psb_desc_type), pointer     :: base_desc => null()
     type(psb_lcspmat_type)           :: tprol
     type(psb_clinmap_type)           :: linmap
     type(amg_c_remap_data_type)      :: remap_data
@@ -186,8 +187,10 @@ module amg_c_onelev_mod
     procedure, pass(lv) :: clone   => c_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_c_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_c_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_c_base_onelev_memory_use
     procedure, pass(lv) :: default => c_base_onelev_default
     procedure, pass(lv) :: free    => amg_c_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_c_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => c_base_onelev_nullify
     procedure, pass(lv) :: check => amg_c_base_onelev_check
     procedure, pass(lv) :: dump  => amg_c_base_onelev_dump
@@ -197,7 +200,7 @@ module amg_c_onelev_mod
     procedure, pass(lv) :: setsm => amg_c_base_onelev_setsm
     procedure, pass(lv) :: setsv => amg_c_base_onelev_setsv
     procedure, pass(lv) :: setag => amg_c_base_onelev_setag
-    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag 
+    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag
     procedure, pass(lv) :: sizeof => c_base_onelev_sizeof
     procedure, pass(lv) :: get_nzeros => c_base_onelev_get_nzeros
     procedure, pass(lv) :: get_wrksz => c_base_onelev_get_wrksize
@@ -205,8 +208,8 @@ module amg_c_onelev_mod
     procedure, pass(lv) :: free_wrk       => c_base_onelev_free_wrk
     procedure, nopass   :: stringval => amg_stringval
     procedure, pass(lv) :: move_alloc => c_base_onelev_move_alloc
-    
-    
+
+
     procedure, pass(lv) :: map_rstr_a => amg_c_base_onelev_map_rstr_a
     procedure, pass(lv) :: map_prol_a => amg_c_base_onelev_map_prol_a
     procedure, pass(lv) :: map_rstr_v => amg_c_base_onelev_map_rstr_v
@@ -226,11 +229,11 @@ module amg_c_onelev_mod
        & c_base_onelev_get_wrksize, c_base_onelev_allocate_wrk, &
        & c_base_onelev_free_wrk
 
-  interface 
+  interface
     subroutine amg_c_base_onelev_mat_asb(lv,a,desc_a,ilaggr,nlaggr,t_prol,info)
       import :: psb_cspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lcspmat_type, psb_lpk_
       import :: amg_c_onelev_type
-      implicit none 
+      implicit none
       class(amg_c_onelev_type), intent(inout), target :: lv
       type(psb_cspmat_type), intent(in) :: a
       type(psb_desc_type), intent(inout)  :: desc_a
@@ -255,141 +258,172 @@ module amg_c_onelev_mod
     end subroutine amg_c_base_onelev_build
   end interface
 
-  interface 
-    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout)
+  interface
+    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_c_onelev_type), intent(in) :: lv
-      integer(psb_ipk_), intent(in)                 :: il,nl,ilmin
-      integer(psb_ipk_), intent(out)                :: info
-      integer(psb_ipk_), intent(in), optional       :: iout
+      class(amg_c_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_base_onelev_descr
   end interface
 
-  interface 
+  interface
+    subroutine amg_c_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_c_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_c_base_onelev_memory_use
+  end interface
+
+  interface
     subroutine amg_c_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_c_onelev_type, psb_c_base_vect_type, psb_spk_, &
            & psb_c_base_sparse_mat, psb_ipk_, psb_i_base_vect_type
       ! Arguments
-      class(amg_c_onelev_type), intent(inout)            :: lv 
+      class(amg_c_onelev_type), intent(inout)            :: lv
       integer(psb_ipk_), intent(out)                     :: info
       class(psb_c_base_sparse_mat), intent(in), optional :: amold
       class(psb_c_base_vect_type), intent(in), optional  :: vmold
       class(psb_i_base_vect_type), intent(in), optional  :: imold
     end subroutine amg_c_base_onelev_cnv
   end interface
-   
-interface 
+
+  interface
     subroutine amg_c_base_onelev_free(lv,info)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
-      
+      implicit none
+
       class(amg_c_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_c_base_onelev_free
   end interface
-  
-  interface 
+
+  interface
+    subroutine amg_c_base_onelev_free_smoothers(lv,info)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_c_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_c_base_onelev_free_smoothers
+  end interface
+
+  interface
     subroutine amg_c_base_onelev_check(lv,info)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_c_onelev_type), intent(inout) :: lv 
+      class(amg_c_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)            :: info
     end subroutine amg_c_base_onelev_check
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_setsm(lv,val,info,pos)
       import :: psb_spk_, amg_c_onelev_type, amg_c_base_smoother_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_c_onelev_type), target, intent(inout) :: lv 
+      class(amg_c_onelev_type), target, intent(inout) :: lv
       class(amg_c_base_smoother_type), intent(in)     :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_c_base_onelev_setsm
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_setsv(lv,val,info,pos)
       import :: psb_spk_, amg_c_onelev_type, amg_c_base_solver_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_c_onelev_type), target, intent(inout) :: lv 
+      class(amg_c_onelev_type), target, intent(inout) :: lv
       class(amg_c_base_solver_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_c_base_onelev_setsv
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_setag(lv,val,info,pos)
       import :: psb_spk_, amg_c_onelev_type, amg_c_base_aggregator_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_c_onelev_type), target, intent(inout) :: lv 
+      class(amg_c_onelev_type), target, intent(inout) :: lv
       class(amg_c_base_aggregator_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_c_base_onelev_setag
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_cseti(lv,what,val,info,pos,idx)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_c_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_c_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       integer(psb_ipk_), intent(in)             :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_c_base_onelev_cseti
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_csetc(lv,what,val,info,pos,idx)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_c_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_c_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       character(len=*), intent(in)              :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_c_base_onelev_csetc
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_c_base_onelev_csetr(lv,what,val,info,pos,idx)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
-      class(amg_c_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+
+      class(amg_c_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       real(psb_spk_), intent(in)                 :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
@@ -397,13 +431,13 @@ interface
     end subroutine amg_c_base_onelev_csetr
   end interface
 
-  interface 
+  interface
     subroutine amg_c_base_onelev_dump(lv,level,info,prefix,head,ac,rp,smoother,&
          & solver,tprol,global_num)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
+      implicit none
       class(amg_c_onelev_type), intent(in) :: lv
       integer(psb_ipk_), intent(in)          :: level
       integer(psb_ipk_), intent(out)         :: info
@@ -435,7 +469,7 @@ interface
     end subroutine amg_c_base_onelev_map_rstr_v
   end interface
 
-  interface 
+  interface
     subroutine amg_c_base_onelev_map_prol_a(lv,alpha,v,beta,u,info,work)
       import
       implicit none
@@ -458,15 +492,15 @@ interface
       type(psb_c_vect_type), optional, target, intent(inout)  :: vtx,vty
     end subroutine amg_c_base_onelev_map_prol_v
   end interface
-  
+
 contains
   !
   ! Function returning the size of the amg_prec_type data structure
-  ! in bytes or in number of nonzeros of the operator(s) involved. 
+  ! in bytes or in number of nonzeros of the operator(s) involved.
   !
 
   function c_base_onelev_get_nzeros(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_c_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
@@ -478,16 +512,16 @@ contains
   end function c_base_onelev_get_nzeros
 
   function c_base_onelev_sizeof(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_c_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
-    
+
     val = psb_sizeof_ip+psb_sizeof_lp
     val = val + lv%desc_ac%sizeof()
     val = val + lv%ac%sizeof()
     val = val + lv%tprol%sizeof()
-    val = val + lv%linmap%sizeof() 
+    val = val + lv%linmap%sizeof()
     if (allocated(lv%sm))   val = val + lv%sm%sizeof()
     if (allocated(lv%sm2a)) val = val + lv%sm2a%sizeof()
     if (allocated(lv%aggr)) val = val + lv%aggr%sizeof()
@@ -496,19 +530,19 @@ contains
 
 
   subroutine c_base_onelev_nullify(lv)
-    implicit none 
+    implicit none
 
     class(amg_c_onelev_type), intent(inout) :: lv
 
-    nullify(lv%base_a) 
-    nullify(lv%base_desc) 
+    nullify(lv%base_a)
+    nullify(lv%base_desc)
     nullify(lv%sm2)
   end subroutine c_base_onelev_nullify
 
   !
-  ! Multilevel defaults: 
+  ! Multilevel defaults:
   !  multiplicative vs. additive ML framework;
-  !  Smoothed decoupled aggregation with zero threshold; 
+  !  Smoothed decoupled aggregation with zero threshold;
   !  distributed coarse matrix;
   !  damping omega  computed with the max-norm estimate of the
   !  dominant eigenvalue;
@@ -518,10 +552,10 @@ contains
   subroutine c_base_onelev_default(lv)
 
     Implicit None
- 
+
     ! Arguments
     class(amg_c_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_) :: info 
+    integer(psb_ipk_) :: info
 
     lv%parms%sweeps_pre      = 1
     lv%parms%sweeps_post     = 1
@@ -536,7 +570,7 @@ contains
     lv%parms%aggr_filter     = amg_no_filter_mat_
     lv%parms%aggr_omega_val  = szero
     lv%parms%aggr_thresh     = 0.01_psb_spk_
-    
+
     if (allocated(lv%sm)) call lv%sm%default()
     if (allocated(lv%sm2a)) then
       call lv%sm2a%default()
@@ -546,7 +580,7 @@ contains
     end if
     if (.not.allocated(lv%aggr)) allocate(amg_c_dec_aggregator_type :: lv%aggr,stat=info)
     if (allocated(lv%aggr)) call lv%aggr%default()
-    
+
     return
 
   end subroutine c_base_onelev_default
@@ -561,9 +595,9 @@ contains
     type(psb_lcspmat_type), intent(out)  :: t_prol
     type(amg_saggr_data), intent(in)    :: ag_data
     integer(psb_ipk_), intent(out)      :: info
-    
+
     call lv%aggr%bld_tprol(lv%parms,ag_data,a,desc_a,ilaggr,nlaggr,t_prol,info)
-    
+
   end subroutine c_base_onelev_bld_tprol
 
 
@@ -573,7 +607,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine c_base_onelev_update_aggr
 
 
@@ -582,33 +616,33 @@ contains
     Implicit None
 
     ! Arguments
-    class(amg_c_onelev_type), target, intent(inout) :: lv 
+    class(amg_c_onelev_type), target, intent(inout) :: lv
     class(amg_c_onelev_type), target, intent(inout) :: lvout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
 
     info = psb_success_
-    if (allocated(lv%sm)) then 
+    if (allocated(lv%sm)) then
       call lv%sm%clone(lvout%sm,info)
-    else 
-      if (allocated(lvout%sm)) then 
+    else
+      if (allocated(lvout%sm)) then
         call lvout%sm%free(info)
         if (info==psb_success_) deallocate(lvout%sm,stat=info)
       end if
     end if
-    if (allocated(lv%sm2a)) then 
+    if (allocated(lv%sm2a)) then
       call lv%sm%clone(lvout%sm2a,info)
       lvout%sm2 => lvout%sm2a
-    else 
-      if (allocated(lvout%sm2a)) then 
+    else
+      if (allocated(lvout%sm2a)) then
         call lvout%sm2a%free(info)
         if (info==psb_success_) deallocate(lvout%sm2a,stat=info)
       end if
       lvout%sm2 => lvout%sm
     end if
-    if (allocated(lv%aggr)) then 
+    if (allocated(lv%aggr)) then
       call  lv%aggr%clone(lvout%aggr,info)
     else
-      if (allocated(lvout%aggr)) then 
+      if (allocated(lvout%aggr)) then
         call lvout%aggr%free(info)
         if (info==psb_success_) deallocate(lvout%aggr,stat=info)
       end if
@@ -621,7 +655,7 @@ contains
     if (info == psb_success_) call lv%remap_data%clone(lvout%remap_data,info)
     lvout%base_a    => lv%base_a
     lvout%base_desc => lv%base_desc
-    
+
     return
 
   end subroutine c_base_onelev_clone
@@ -630,12 +664,12 @@ contains
     use psb_base_mod
     implicit none
     class(amg_c_onelev_type), target, intent(inout) :: lv, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     b%parms  = lv%parms
     b%szratio = lv%szratio
-    if (associated(lv%sm2,lv%sm2a)) then 
+    if (associated(lv%sm2,lv%sm2a)) then
       call move_alloc(lv%sm,b%sm)
       call move_alloc(lv%sm2a,b%sm2a)
       b%sm2 =>b%sm2a
@@ -646,18 +680,18 @@ contains
     end if
 
     call move_alloc(lv%aggr,b%aggr)
-    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info) 
+    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info)
+    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info)
     b%base_a    => lv%base_a
     b%base_desc => lv%base_desc
-    
+
   end subroutine c_base_onelev_move_alloc
 
-  
+
   function c_base_onelev_get_wrksize(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_c_onelev_type), intent(inout) :: lv
     integer(psb_ipk_)  :: val
 
@@ -678,26 +712,26 @@ contains
     select case(lv%parms%ml_cycle)
     case(amg_add_ml_,amg_mult_ml_,amg_vcycle_ml_, amg_wcycle_ml_)
       ! We're good
-      
+
     case(amg_kcycle_ml_, amg_kcyclesym_ml_)
       !
       ! We need 7 in inneritkcycle.
-      !  Can we reuse vtx? 
-      ! 
+      !  Can we reuse vtx?
+      !
       val = val + 7
-      
+
     case default
       ! Need a better error signaling ?
       val = -1
     end select
-    
+
   end function c_base_onelev_get_wrksize
 
   subroutine c_base_onelev_allocate_wrk(lv,info,vmold)
     use psb_base_mod
     implicit none
     class(amg_c_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     class(psb_c_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: nwv, i
@@ -710,22 +744,22 @@ contains
         !  Need to fix this, we need two different allocations
         !
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
-             & desc2=lv%remap_data%desc_ac_pre_remap)      
+             & desc2=lv%remap_data%desc_ac_pre_remap)
       else
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
       end if
     end if
-    
+
   end subroutine c_base_onelev_allocate_wrk
 
-  
+
   subroutine c_base_onelev_free_wrk(lv,info)
     use psb_base_mod
     implicit none
     class(amg_c_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     !
-    integer(psb_ipk_) :: nwv,i 
+    integer(psb_ipk_) :: nwv,i
     info = psb_success_
 
     if (allocated(lv%wrk)) then
@@ -733,17 +767,17 @@ contains
       if (info == 0) deallocate(lv%wrk,stat=info)
     end if
   end subroutine c_base_onelev_free_wrk
-  
+
   subroutine c_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wk
     integer(psb_ipk_), intent(in)                     :: nwv
     type(psb_desc_type), intent(in)                   :: desc
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_c_base_vect_type), intent(in), optional  :: vmold
     type(psb_desc_type), intent(in), optional          :: desc2
     !
@@ -807,14 +841,14 @@ contains
       end do
     end if
   end subroutine c_wrk_alloc
-    
+
   subroutine c_wrk_free(wk,info)
 
     Implicit None
 
     ! Arguments
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
@@ -835,7 +869,7 @@ contains
     end if
 
   end subroutine c_wrk_free
-    
+
   subroutine c_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -843,11 +877,11 @@ contains
     ! Arguments
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wk
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wkout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
-    
+
     call psb_safe_ab_cpy(wk%tx,wkout%tx,info)
     call psb_safe_ab_cpy(wk%ty,wkout%ty,info)
     call psb_safe_ab_cpy(wk%x2l,wkout%x2l,info)
@@ -869,12 +903,12 @@ contains
     return
 
   end subroutine c_wrk_clone
-  
+
   subroutine c_wrk_move_alloc(wk, b,info)
     implicit none
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wk, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     call move_alloc(wk%tx,b%tx)
     call move_alloc(wk%ty,b%ty)
@@ -887,17 +921,17 @@ contains
     call move_alloc(wk%vx2l%v,b%vx2l%v)
     call move_alloc(wk%vy2l%v,b%vy2l%v)
     call move_alloc(wk%wv,b%wv)
-        
+
   end subroutine c_wrk_move_alloc
 
   subroutine c_wrk_cnv(wk,info,vmold)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_cmlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_c_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: i
@@ -918,7 +952,7 @@ contains
 
   function c_wrk_sizeof(wk) result(val)
     use psb_realloc_mod
-    implicit none 
+    implicit none
     class(amg_cmlprec_wrk_type), intent(in) :: wk
     integer(psb_epk_) :: val
     integer :: i
@@ -937,14 +971,14 @@ contains
       end do
     end if
   end function c_wrk_sizeof
- 
+
   subroutine c_remap_data_clone(rmp, remap_out, info)
     use psb_base_mod
-    implicit none 
+    implicit none
     ! Arguments
     class(amg_c_remap_data_type), target, intent(inout) :: rmp
     class(amg_c_remap_data_type), target, intent(inout) :: remap_out
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
 
@@ -955,7 +989,7 @@ contains
          & call rmp%desc_ac_pre_remap%clone(remap_out%desc_ac_pre_remap,info)
     remap_out%idest = rmp%idest
     call psb_safe_ab_cpy(rmp%isrc,remap_out%isrc,info)
-    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)    
+    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)
   end subroutine c_remap_data_clone
-  
+
 end module amg_c_onelev_mod

amgprec/amg_c_prec_mod.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -40,7 +40,7 @@
 ! Module: amg_c_prec_mod
 !
 !  This module defines the user interfaces to the real/complex, single/double
-!  precision versions of the user-level MLD2P4 routines.
+!  precision versions of the user-level AMG4PSBLAS routines.
 !
 module amg_c_prec_mod
 
@@ -55,12 +55,7 @@ module amg_c_prec_mod
   use amg_c_ainv_solver
   use amg_c_invk_solver
   use amg_c_invt_solver
-
-  interface amg_precset
-    module procedure amg_c_iprecsetsm, amg_c_iprecsetsv, &
-         & amg_c_cprecseti, amg_c_cprecsetc, amg_c_cprecsetr, &
-         & amg_c_iprecsetag
-  end interface amg_precset
+  use amg_c_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_c_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)
@@ -82,61 +77,4 @@ module amg_c_prec_mod
     end subroutine amg_c_extprol_bld
   end interface amg_extprol_bld
 
-contains
-
-  subroutine amg_c_iprecsetsm(p,val,info,pos)
-    type(amg_cprec_type), intent(inout)    :: p
-    class(amg_c_base_smoother_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)           :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(val,info,pos=pos)
-  end subroutine amg_c_iprecsetsm
-
-  subroutine amg_c_iprecsetsv(p,val,info,pos)
-    type(amg_cprec_type), intent(inout)    :: p
-    class(amg_c_base_solver_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_c_iprecsetsv
-
-  subroutine amg_c_iprecsetag(p,val,info,pos)
-    type(amg_cprec_type), intent(inout)    :: p
-    class(amg_c_base_aggregator_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_c_iprecsetag
-
-  subroutine amg_c_cprecseti(p,what,val,info,pos)
-    type(amg_cprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    integer(psb_ipk_), intent(in)           :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_c_cprecseti
-
-  subroutine amg_c_cprecsetr(p,what,val,info,pos)
-    type(amg_cprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    real(psb_spk_), intent(in)             :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_c_cprecsetr
-
-  subroutine amg_c_cprecsetc(p,what,val,info,pos)
-    type(amg_cprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    character(len=*), intent(in)            :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_c_cprecsetc
-
 end module amg_c_prec_mod

amgprec/amg_c_prec_type.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -66,7 +66,7 @@ module amg_c_prec_type
   !
   !  This is the data type containing all the information about the multilevel
   !  preconditioner ('d', 's', 'c' and 'z', according to the real/complex,
-  !  single/double precision version of  MLD2P4).
+  !  single/double precision version of  AMG4PSBLAS).
   !  It consists of an array of 'one-level' intermediate data structures
   !  of type amg_conelev_type, each containing the information needed to apply
   !  the smoothing and the coarse-space correction at a generic level. RT is the
@@ -135,8 +135,11 @@ module amg_c_prec_type
     procedure, pass(prec)               :: build        => amg_cprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_c_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_c_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_c_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_c_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_c_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_cfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_cfile_prec_memory_use
   end type amg_cprec_type
 
   private :: amg_c_dump, amg_c_get_compl,  amg_c_cmp_compl,&
@@ -155,16 +158,35 @@ module amg_c_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_cfile_prec_descr(prec,iout,root)
+    subroutine amg_cfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_cprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_cprec_type), intent(in)      :: prec
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_cfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_cfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_cprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_cfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_cprec_sizeof
   end interface
@@ -342,6 +364,14 @@ module amg_c_prec_type
     end subroutine amg_c_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_c_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_c_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -424,11 +454,22 @@ contains
     end if
   end function amg_c_get_nzeros
 
-  function amg_cprec_sizeof(prec) result(val)
+  function amg_cprec_sizeof(prec, global) result(val)
     implicit none
     class(amg_cprec_type), intent(in) :: prec
-    integer(psb_epk_) :: val
+    logical, intent(in), optional :: global
+    integer(psb_epk_) :: val    
     integer(psb_ipk_)        :: i
+    type(psb_ctxt_type) :: ctxt
+    
+    logical :: global_
+
+    if (present(global)) then
+      global_ = global
+    else
+      global_ = .false.
+    end if
+    
     val = 0
     val = val + psb_sizeof_ip
     if (allocated(prec%precv)) then
@@ -436,6 +477,11 @@ contains
         val = val + prec%precv(i)%sizeof()
       end do
     end if
+    if (global_) then
+      ctxt = prec%ctxt
+      call psb_sum(ctxt,val)
+    end if
+
   end function amg_cprec_sizeof
 
   !
@@ -599,6 +645,68 @@ contains
 
   end subroutine amg_c_prec_free
 
+  subroutine amg_c_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_smoothers_free
+
+  subroutine amg_c_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_hierarchy_free
 
 
   !

amgprec/amg_c_slu_solver.F90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -385,20 +385,22 @@ contains
   
   end subroutine c_slu_solver_finalize
 
-  subroutine c_slu_solver_descr(sv,info,iout,coarse)
+  subroutine c_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_c_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_c_symdec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_c_symdec_aggregator_fmt
   
-  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_symdec_aggregator_descr

amgprec/amg_d_ainv_solver.F90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -55,13 +58,13 @@ module amg_d_ainv_solver
     procedure, pass(sv) :: check   => amg_d_ainv_solver_check
     procedure, pass(sv) :: build   => amg_d_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_d_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_d_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_d_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_d_ainv_solver_csetr
-    procedure, pass(sv) :: seti    => amg_d_ainv_solver_seti
-    procedure, pass(sv) :: setc    => amg_d_ainv_solver_setc
-    procedure, pass(sv) :: setr    => amg_d_ainv_solver_setr
-    generic, public :: set => seti, setr, setc
+!!$    procedure, pass(sv) :: seti    => amg_d_ainv_solver_seti
+!!$    procedure, pass(sv) :: setc    => amg_d_ainv_solver_setc
+!!$    procedure, pass(sv) :: setr    => amg_d_ainv_solver_setr
     procedure, pass(sv) :: descr   => amg_d_ainv_solver_descr
     procedure, pass(sv) :: default => d_ainv_solver_default
     procedure, nopass   :: stringval  => d_ainv_stringval
@@ -83,6 +86,16 @@ module amg_d_ainv_solver
     end subroutine amg_d_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_ainv_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_d_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -159,44 +172,44 @@ module amg_d_ainv_solver
     end subroutine amg_d_ainv_solver_csetr
   end interface
 
-  interface
-    subroutine amg_d_ainv_solver_setc(sv,what,val,info)
-      import :: amg_d_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_d_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      character(len=*), intent(in)                 :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_d_ainv_solver_setc
-  end interface
+!!$  interface
+!!$    subroutine amg_d_ainv_solver_setc(sv,what,val,info)
+!!$      import :: amg_d_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_d_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      character(len=*), intent(in)                 :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_d_ainv_solver_setc
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_d_ainv_solver_seti(sv,what,val,info)
+!!$      import :: amg_d_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_d_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      integer(psb_ipk_), intent(in)                :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_d_ainv_solver_seti
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_d_ainv_solver_setr(sv,what,val,info)
+!!$      import :: amg_d_ainv_solver_type, psb_ipk_, psb_dpk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_d_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      real(psb_dpk_), intent(in)                   :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_d_ainv_solver_setr
+!!$  end interface
 
   interface
-    subroutine amg_d_ainv_solver_seti(sv,what,val,info)
-      import :: amg_d_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_d_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_d_ainv_solver_seti
-  end interface
-
-  interface
-    subroutine amg_d_ainv_solver_setr(sv,what,val,info)
-      import :: amg_d_ainv_solver_type, psb_ipk_, psb_dpk_
-      Implicit none
-      ! Arguments
-      class(amg_d_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_dpk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_d_ainv_solver_setr
-  end interface
-
-  interface
-    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -206,7 +219,7 @@ module amg_d_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_ainv_solver_descr
   end interface
 

amgprec/amg_d_as_smoother.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -396,21 +396,23 @@ contains
   end subroutine d_as_smoother_default
 
 
-  subroutine d_as_smoother_descr(sm,info,iout,coarse)
+  subroutine d_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_d_base_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -126,7 +126,7 @@ module amg_d_base_aggregator_mod
            & psb_d_coo_sparse_mat, amg_dml_parms, psb_dpk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_d_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_dml_parms), intent(inout)         :: parms 
       type(psb_d_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -144,7 +144,7 @@ module amg_d_base_aggregator_mod
            & psb_d_coo_sparse_mat, amg_dml_parms, psb_dpk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_d_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_dml_parms), intent(inout)         :: parms 
       type(psb_d_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_d_base_aggregator_xt_desc
 
-  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_base_aggregator_descr

amgprec/amg_d_base_ainv_mod.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions

amgprec/amg_d_base_smoother_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -272,7 +272,7 @@ module amg_d_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_d_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_d_base_smoother_descr
   end interface
   

amgprec/amg_d_base_solver_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -270,7 +270,7 @@ module amg_d_base_solver_mod
   end interface
   
   interface
-    subroutine amg_d_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_d_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_d_base_solver_descr
   end interface 
   

amgprec/amg_d_dec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_d_dec_aggregator_fmt
   
-  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_dec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_dec_aggregator_descr

amgprec/amg_d_diag_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -219,7 +219,7 @@ contains
 
   end subroutine d_diag_solver_free
 
-  subroutine d_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_d_l1_diag_solver
   
 contains
 
-  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_d_gs_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -433,20 +433,22 @@ contains
     return
   end subroutine d_gs_solver_free
 
-  subroutine d_gs_solver_descr(sv,info,iout,coarse)
+  subroutine d_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function d_gs_solver_is_iterative
     
-  subroutine d_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine d_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_d_hybrid_aggregator_mod.F90

@@ -2,7 +2,7 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
 !    (C) Copyright 2020 
 !  

amgprec/amg_d_id_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -157,7 +157,7 @@ contains
     return
   end subroutine d_id_solver_free
 
-  subroutine d_id_solver_descr(sv,info,iout,coarse)
+  subroutine d_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_d_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_d_ilu_fact_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   

amgprec/amg_d_ilu_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_d_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = dzero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',dzero,is_legal_d_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine d_ilu_solver_free
 
-  subroutine d_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine d_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_d_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_d_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function d_ilu_solver_get_id
 
   function d_ilu_solver_get_wrksize() result(val)

amgprec/amg_d_inner_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -39,7 +39,7 @@
 !
 ! Module: amg_inner_mod
 !
-!  This module defines the interfaces to inner MLD2P4 routines.
+!  This module defines the interfaces to inner AMG4PSBLAS routines.
 !  The interfaces  of the user level routines are defined in amg_prec_mod.f90.
 !
 module amg_d_inner_mod

amgprec/amg_d_invk_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,10 +52,9 @@ module amg_d_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invk_solver_check
     procedure, pass(sv) :: clone   => amg_d_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invk_solver_cseti
-    procedure, pass(sv) :: seti    => amg_d_invk_solver_seti
-    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_d_invk_solver_descr
     procedure, pass(sv) :: default => d_invk_solver_default
   end type amg_d_invk_solver_type
@@ -72,6 +74,17 @@ module amg_d_invk_solver
     end subroutine amg_d_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invk_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -122,7 +135,7 @@ module amg_d_invk_solver
   end interface
 
   interface
-    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -132,22 +145,10 @@ module amg_d_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_invk_solver_descr
   end interface
 
-  interface
-    subroutine amg_d_invk_solver_seti(sv,what,val,info)
-      import :: amg_d_invk_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_d_invk_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_d_invk_solver_seti
-  end interface
-
 contains
 
   subroutine d_invk_solver_default(sv)

amgprec/amg_d_invt_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,12 +52,10 @@ module amg_d_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invt_solver_check
     procedure, pass(sv) :: clone   => amg_d_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_d_invt_solver_csetr
-    procedure, pass(sv) :: seti    => amg_d_invt_solver_seti
-    procedure, pass(sv) :: setr    => amg_d_invt_solver_setr
-    generic, public     :: set     => seti, setr
     procedure, pass(sv) :: descr   => amg_d_invt_solver_descr
     procedure, pass(sv) :: default => d_invt_solver_default
   end type amg_d_invt_solver_type
@@ -73,6 +74,17 @@ module amg_d_invt_solver
     end subroutine amg_d_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invt_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -134,44 +146,21 @@ module amg_d_invt_solver
   end interface
 
   interface
-    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_d_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_d_invt_solver_descr
   end interface
 
-  interface
-    subroutine amg_d_invt_solver_setr(sv,what,val,info)
-      import :: amg_d_invt_solver_type, psb_dpk_, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_d_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_dpk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_d_invt_solver_setr
-  end interface
-
-  interface
-    subroutine amg_d_invt_solver_seti(sv,what,val,info)
-      import :: amg_d_invt_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_d_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine
-  end interface
-
 contains
 
   subroutine d_invt_solver_default(sv)

amgprec/amg_d_jac_smoother.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -219,12 +219,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_jac_smoother_type, psb_ipk_
       class(amg_d_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_d_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_l1_jac_smoother_type, psb_ipk_
       class(amg_d_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_d_l1_jac_smoother_descr
   end interface
 

amgprec/amg_d_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_d_jac_solver_mod.f90
+!
+! Module: amg_d_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_d_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_d_jac_solver
+
+  use amg_d_base_solver_mod
+
+  type, extends(amg_d_base_solver_type) :: amg_d_jac_solver_type
+    type(psb_dspmat_type)      :: a
+    type(psb_d_vect_type), allocatable :: dv
+    real(psb_dpk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_dpk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_d_jac_solver_dmp
+    procedure, pass(sv) :: check   => d_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_d_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_d_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_d_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_d_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_d_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_d_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_d_jac_solver_apply
+    procedure, pass(sv) :: free    => d_jac_solver_free
+    procedure, pass(sv) :: cseti   => d_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => d_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => d_jac_solver_csetr
+    procedure, pass(sv) :: descr   => d_jac_solver_descr
+    procedure, pass(sv) :: default => d_jac_solver_default
+    procedure, pass(sv) :: sizeof  => d_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => d_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => d_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => d_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => d_jac_solver_get_id
+    procedure, nopass   :: is_iterative => d_jac_solver_is_iterative
+  end type amg_d_jac_solver_type
+
+  type, extends(amg_d_jac_solver_type) :: amg_d_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_d_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => d_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => d_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => d_l1_jac_solver_get_id
+  end type amg_d_l1_jac_solver_type
+
+
+  private :: d_jac_solver_bld, d_jac_solver_apply, &
+       &  d_jac_solver_free,   &
+       &  d_jac_solver_descr,  d_jac_solver_sizeof, &
+       &  d_jac_solver_default, d_jac_solver_dmp, &
+       &  d_jac_solver_apply_vect, d_jac_solver_get_nzeros, &
+       &  d_jac_solver_get_fmt, d_jac_solver_check,&
+       &  d_jac_solver_is_iterative, &
+       &  d_jac_solver_get_id, d_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_d_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      type(psb_d_vect_type),intent(inout)         :: x
+      type(psb_d_vect_type),intent(inout)         :: y
+      real(psb_dpk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      real(psb_dpk_),target, intent(inout)         :: work(:)
+      type(psb_d_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_d_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_d_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      real(psb_dpk_),intent(inout)         :: x(:)
+      real(psb_dpk_),intent(inout)         :: y(:)
+      real(psb_dpk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      real(psb_dpk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      real(psb_dpk_),intent(inout), optional :: initu(:)
+    end subroutine amg_d_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_d_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_dspmat_type), intent(in), target, optional :: b
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_d_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_l1_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_d_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_dspmat_type), intent(in), target, optional :: b
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_d_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_d_jac_solver_type, psb_dpk_, &
+           & psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_d_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_d_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_d_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_d_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_d_jac_solver_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_d_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_d_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_d_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_base_solver_type, amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout)               :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_d_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_d_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+!!$           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+!!$           & amg_d_base_solver_type, amg_d_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_d_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_d_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_d_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_base_solver_type, amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      class(amg_d_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_d_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_d_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
+           & amg_d_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_d_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_d_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine d_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine d_jac_solver_default
+
+  subroutine d_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='d_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine d_jac_solver_check
+
+  subroutine d_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_cseti
+
+  subroutine d_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='d_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_csetc
+  
+  subroutine d_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_dpk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_csetr
+
+  subroutine d_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='d_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_free
+
+  subroutine d_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_d_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_jac_solver_descr
+
+  function d_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function d_jac_solver_get_nzeros
+
+  function d_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_d_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function d_jac_solver_sizeof
+
+  function d_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function d_jac_solver_get_fmt
+
+  function d_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function d_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function d_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function d_jac_solver_is_iterative
+    
+  function d_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function d_jac_solver_get_wrksize
+
+  subroutine d_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_d_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_l1_jac_solver_descr
+
+  function d_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function d_l1_jac_solver_get_fmt
+
+  function d_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function d_l1_jac_solver_get_id
+  
+end module amg_d_jac_solver

amgprec/amg_d_krm_solver.f90

@@ -1,11 +1,14 @@
-!
-!
+!  
+!   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!
-!    (C) Copyright 2020
-!
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !        Salvatore Filippone
 !        Pasqua D'Ambra
 !        Fabio Durastante
@@ -52,14 +55,14 @@
 !      2. Redistributions in binary form must reproduce the above copyright
 !         notice, this list of conditions, and the following disclaimer in the
 !         documentation and/or other materials provided with the distribution.
-!      3. The name of the MLD2P4 group or the names of its contributors may
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
 !
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
 !    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 !    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 !    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
@@ -70,16 +73,16 @@
 !
 !
 !
-! File: amg_d_rkr_solver_mod.f90
+! File: amg_d_krm_solver_mod.f90
 !
-! Module: amg_d_rkr_solver_mod
+! Module: amg_d_krm_solver_mod
 !
-module amg_d_rkr_solver
+module amg_d_krm_solver
 
   use amg_d_base_solver_mod
   use amg_d_prec_type
 
-  type, extends(amg_d_base_solver_type) :: amg_d_rkr_solver_type
+  type, extends(amg_d_base_solver_type) :: amg_d_krm_solver_type
     !
     logical               :: global
     character(len=16)     :: method, kprec, sub_solve
@@ -94,46 +97,46 @@ module amg_d_rkr_solver
   contains
     !
     !
-    procedure, pass(sv) :: dump    => d_rkr_solver_dmp
-    procedure, pass(sv) :: check   => d_rkr_solver_check
-    procedure, pass(sv) :: clone   => d_rkr_solver_clone
-    procedure, pass(sv) :: clone_settings   => d_rkr_solver_clone_settings
-    procedure, pass(sv) :: cnv     => d_rkr_solver_cnv
-    procedure, pass(sv) :: apply_v => amg_d_rkr_solver_apply_vect
-    procedure, pass(sv) :: apply_a => amg_d_rkr_solver_apply
-    procedure, pass(sv) :: clear_data  => d_rkr_solver_clear_data
-    procedure, pass(sv) :: free    => d_rkr_solver_free
-    procedure, pass(sv) :: cseti   => d_rkr_solver_cseti
-    procedure, pass(sv) :: csetc   => d_rkr_solver_csetc
-    procedure, pass(sv) :: csetr   => d_rkr_solver_csetr
-    procedure, pass(sv) :: sizeof  => d_rkr_solver_sizeof
-    procedure, pass(sv) :: get_nzeros => d_rkr_solver_get_nzeros
-    !procedure, nopass   :: get_id  => d_rkr_solver_get_id
-    procedure, pass(sv) :: is_global => d_rkr_solver_is_global
-    procedure, nopass   :: is_iterative => d_rkr_solver_is_iterative
+    procedure, pass(sv) :: dump    => d_krm_solver_dmp
+    procedure, pass(sv) :: check   => d_krm_solver_check
+    procedure, pass(sv) :: clone   => d_krm_solver_clone
+    procedure, pass(sv) :: clone_settings   => d_krm_solver_clone_settings
+    procedure, pass(sv) :: cnv     => d_krm_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_d_krm_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_d_krm_solver_apply
+    procedure, pass(sv) :: clear_data  => d_krm_solver_clear_data
+    procedure, pass(sv) :: free    => d_krm_solver_free
+    procedure, pass(sv) :: cseti   => d_krm_solver_cseti
+    procedure, pass(sv) :: csetc   => d_krm_solver_csetc
+    procedure, pass(sv) :: csetr   => d_krm_solver_csetr
+    procedure, pass(sv) :: sizeof  => d_krm_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => d_krm_solver_get_nzeros
+    !procedure, nopass   :: get_id  => d_krm_solver_get_id
+    procedure, pass(sv) :: is_global => d_krm_solver_is_global
+    procedure, nopass   :: is_iterative => d_krm_solver_is_iterative
 
 
     !
     ! These methods are specific for the new solver type
     ! and therefore need to be overridden
     !
-    procedure, pass(sv) :: descr   => d_rkr_solver_descr
-    procedure, pass(sv) :: default => d_rkr_solver_default
-    procedure, pass(sv) :: build   => amg_d_rkr_solver_bld
-    procedure, nopass   :: get_fmt => d_rkr_solver_get_fmt
-  end type amg_d_rkr_solver_type
+    procedure, pass(sv) :: descr   => d_krm_solver_descr
+    procedure, pass(sv) :: default => d_krm_solver_default
+    procedure, pass(sv) :: build   => amg_d_krm_solver_bld
+    procedure, nopass   :: get_fmt => d_krm_solver_get_fmt
+  end type amg_d_krm_solver_type
 
 
-  private ::  d_rkr_solver_get_fmt, d_rkr_solver_descr, d_rkr_solver_default
+  private ::  d_krm_solver_get_fmt, d_krm_solver_descr, d_krm_solver_default
 
   interface
-    subroutine amg_d_rkr_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_d_krm_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
          & trans,work,wv,info,init,initu)
-      import :: psb_desc_type, amg_d_rkr_solver_type, psb_d_vect_type, psb_dpk_, &
+      import :: psb_desc_type, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
            & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)             :: desc_data
-      class(amg_d_rkr_solver_type), intent(inout) :: sv
+      class(amg_d_krm_solver_type), intent(inout) :: sv
       type(psb_d_vect_type),intent(inout)         :: x
       type(psb_d_vect_type),intent(inout)         :: y
       real(psb_dpk_),intent(in)                    :: alpha,beta
@@ -143,17 +146,17 @@ module amg_d_rkr_solver
       integer(psb_ipk_), intent(out)                :: info
       character, intent(in), optional                :: init
       type(psb_d_vect_type),intent(inout), optional   :: initu
-    end subroutine amg_d_rkr_solver_apply_vect
+    end subroutine amg_d_krm_solver_apply_vect
   end interface
 
   interface
-    subroutine amg_d_rkr_solver_apply(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_d_krm_solver_apply(alpha,sv,x,beta,y,desc_data,&
          & trans,work,info,init,initu)
-      import :: psb_desc_type, amg_d_rkr_solver_type, psb_d_vect_type, psb_dpk_, &
+      import :: psb_desc_type, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
            & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)      :: desc_data
-      class(amg_d_rkr_solver_type), intent(inout) :: sv
+      class(amg_d_krm_solver_type), intent(inout) :: sv
       real(psb_dpk_),intent(inout)         :: x(:)
       real(psb_dpk_),intent(inout)         :: y(:)
       real(psb_dpk_),intent(in)            :: alpha,beta
@@ -162,24 +165,24 @@ module amg_d_rkr_solver
       integer(psb_ipk_), intent(out)        :: info
       character, intent(in), optional       :: init
       real(psb_dpk_),intent(inout), optional :: initu(:)
-    end subroutine amg_d_rkr_solver_apply
+    end subroutine amg_d_krm_solver_apply
   end interface
 
   interface
-    subroutine amg_d_rkr_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
-      import :: psb_desc_type, amg_d_rkr_solver_type, psb_d_vect_type, psb_dpk_, &
+    subroutine amg_d_krm_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
            & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
            & psb_ipk_, psb_i_base_vect_type
       implicit none
       type(psb_dspmat_type), intent(in), target           :: a
       Type(psb_desc_type), Intent(inout)                  :: desc_a
-      class(amg_d_rkr_solver_type), intent(inout)         :: sv
+      class(amg_d_krm_solver_type), intent(inout)         :: sv
       integer(psb_ipk_), intent(out)                      :: info
       type(psb_dspmat_type), intent(in), target, optional :: b
       class(psb_d_base_sparse_mat), intent(in), optional  :: amold
       class(psb_d_base_vect_type), intent(in), optional   :: vmold
       class(psb_i_base_vect_type), intent(in), optional   :: imold
-    end subroutine amg_d_rkr_solver_bld
+    end subroutine amg_d_krm_solver_bld
   end interface
 
 
@@ -187,12 +190,12 @@ contains
 
   !
   !
-  subroutine d_rkr_solver_default(sv)
+  subroutine d_krm_solver_default(sv)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
 
     sv%method     = 'bicgstab'
     sv%kprec      = 'bjac'
@@ -207,42 +210,42 @@ contains
     sv%global = .false.
 
     return
-  end subroutine d_rkr_solver_default
+  end subroutine d_krm_solver_default
 
-  function d_rkr_solver_get_nzeros(sv) result(val)
+  function d_krm_solver_get_nzeros(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(in) :: sv
+    class(amg_d_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%get_nzeros()
 
     return
-  end function d_rkr_solver_get_nzeros
+  end function d_krm_solver_get_nzeros
 
-  function d_rkr_solver_sizeof(sv) result(val)
+  function d_krm_solver_sizeof(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(in) :: sv
+    class(amg_d_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%sizeof() + sv%desc_local%sizeof() + sv%a_local%sizeof()
 
     return
-  end function d_rkr_solver_sizeof
+  end function d_krm_solver_sizeof
 
 
-  subroutine d_rkr_solver_check(sv,info)
+  subroutine d_krm_solver_check(sv,info)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_) :: err_act
-    character(len=20) :: name='d_rkr_solver_check'
+    character(len=20) :: name='d_krm_solver_check'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -256,36 +259,36 @@ contains
 9999 call psb_error_handler(err_act)
     return
 
-  end subroutine d_rkr_solver_check
+  end subroutine d_krm_solver_check
 
-  subroutine d_rkr_solver_cseti(sv,what,val,info,idx)
+  subroutine d_krm_solver_cseti(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     integer(psb_ipk_), intent(in)                 :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='d_rkr_solver_cseti'
+    character(len=20)  :: name='d_krm_solver_cseti'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
     select case(psb_toupper(trim(what)))
-    case('RKR_IRST')
+    case('KRM_IRST')
       sv%irst = val
-    case('RKR_ISTOPC')
+    case('KRM_ISTOPC')
       sv%istopc = val
-    case('RKR_ITMAX')
+    case('KRM_ITMAX')
       sv%itmax = val
-    case('RKR_ITRACE')
+    case('KRM_ITRACE')
       sv%itrace = val
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%i_sub_solve = val
-    case('RKR_FILLIN')
+    case('KRM_FILLIN')
       sv%fillin = val
     case default
       call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
@@ -296,33 +299,33 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine d_rkr_solver_cseti
+  end subroutine d_krm_solver_cseti
 
-  subroutine d_rkr_solver_csetc(sv,what,val,info,idx)
+  subroutine d_krm_solver_csetc(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     character(len=*), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act, ival
-    character(len=20)  :: name='d_rkr_solver_csetc'
+    character(len=20)  :: name='d_krm_solver_csetc'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
 
     select case(psb_toupper(trim(what)))
-    case('RKR_METHOD')
+    case('KRM_METHOD')
       sv%method = psb_toupper(trim(val))
-    case('RKR_KPREC')
+    case('KRM_KPREC')
       sv%kprec = psb_toupper(trim(val))
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%sub_solve = psb_toupper(trim(val))
-    case('RKR_GLOBAL')
+    case('KRM_GLOBAL')
       select case(psb_toupper(trim(val)))
       case('LOCAL','FALSE')
         sv%global = .false.
@@ -345,26 +348,26 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine d_rkr_solver_csetc
+  end subroutine d_krm_solver_csetc
 
-  subroutine d_rkr_solver_csetr(sv,what,val,info,idx)
+  subroutine d_krm_solver_csetr(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     real(psb_dpk_), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='d_rkr_solver_csetr'
+    character(len=20)  :: name='d_krm_solver_csetr'
 
     call psb_erractionsave(err_act)
     info = psb_success_
 
     select case(psb_toupper(what))
-    case('RKR_EPS')
+    case('KRM_EPS')
       sv%eps = val
     case default
       call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
@@ -375,18 +378,18 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine d_rkr_solver_csetr
+  end subroutine d_krm_solver_csetr
 
-  subroutine d_rkr_solver_clear_data(sv,info)
+  subroutine d_krm_solver_clear_data(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_) :: err_act
     type(psb_ctxt_type)  :: l_ctxt
-    character(len=20)  :: name='d_rkr_solver_free'
+    character(len=20)  :: name='d_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -403,19 +406,19 @@ contains
     nullify(sv%a)
     call psb_erractionrestore(err_act)
     return
-  end subroutine d_rkr_solver_clear_data
+  end subroutine d_krm_solver_clear_data
 
 
-  subroutine d_rkr_solver_free(sv,info)
+  subroutine d_krm_solver_free(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout) :: sv
+    class(amg_d_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_)  :: err_act
     type(psb_ctxt_type) :: l_ctxt
-    character(len=20)  :: name='d_rkr_solver_free'
+    character(len=20)  :: name='d_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,29 +427,31 @@ contains
 
     call psb_erractionrestore(err_act)
     return
-  end subroutine d_rkr_solver_free
+  end subroutine d_krm_solver_free
 
-  function d_rkr_solver_get_fmt() result(val)
+  function d_krm_solver_get_fmt() result(val)
     implicit none
     character(len=32)  :: val
 
-    val = "RKR solver"
-  end function d_rkr_solver_get_fmt
+    val = "KRM solver"
+  end function d_krm_solver_get_fmt
 
-  subroutine d_rkr_solver_descr(sv,info,iout,coarse)
+  subroutine d_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(in) :: sv
+    class(amg_d_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
-    character(len=20), parameter :: name='amg_d_rkr_solver_descr'
+    character(len=20), parameter :: name='amg_d_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,34 +460,33 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine d_rkr_solver_descr
+  end subroutine d_krm_solver_descr
 
-  subroutine d_rkr_solver_cnv(sv,info,amold,vmold,imold)
+  subroutine d_krm_solver_cnv(sv,info,amold,vmold,imold)
     implicit none
-    class(amg_d_rkr_solver_type), intent(inout)         :: sv
+    class(amg_d_krm_solver_type), intent(inout)         :: sv
     integer(psb_ipk_), intent(out)                      :: info
     class(psb_d_base_sparse_mat), intent(in), optional  :: amold
     class(psb_d_base_vect_type), intent(in), optional   :: vmold
@@ -490,13 +494,13 @@ contains
 
     call sv%prec%cnv(info,amold=amold,vmold=vmold,imold=imold)
 
-  end subroutine d_rkr_solver_cnv
+  end subroutine d_krm_solver_cnv
 
-  subroutine d_rkr_solver_clone(sv,svout,info)
+  subroutine d_krm_solver_clone(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout)               :: sv
+    class(amg_d_krm_solver_type), intent(inout)               :: sv
     class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
@@ -505,7 +509,7 @@ contains
     call svout%free(info)
     allocate(svout,stat=info,mold=sv)
     select type(so=>svout)
-    class is(amg_d_rkr_solver_type)
+    class is(amg_d_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -524,21 +528,21 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine d_rkr_solver_clone
+  end subroutine d_krm_solver_clone
 
 
-  subroutine d_rkr_solver_clone_settings(sv,svout,info)
+  subroutine d_krm_solver_clone_settings(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_d_rkr_solver_type), intent(inout)               :: sv
+    class(amg_d_krm_solver_type), intent(inout)               :: sv
     class(amg_d_base_solver_type), intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
     info = psb_success_
 
     select type(so=>svout)
-    class is(amg_d_rkr_solver_type)
+    class is(amg_d_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -554,11 +558,11 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine d_rkr_solver_clone_settings
+  end subroutine d_krm_solver_clone_settings
 
-  subroutine d_rkr_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+  subroutine d_krm_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
     implicit none
-    class(amg_d_rkr_solver_type), intent(in) :: sv
+    class(amg_d_krm_solver_type), intent(in) :: sv
     type(psb_desc_type), intent(in)             :: desc
     integer(psb_ipk_), intent(in)              :: level
     integer(psb_ipk_), intent(out)             :: info
@@ -568,23 +572,23 @@ contains
 
     call sv%prec%dump(info,prefix=prefix,head=head)
 
-  end subroutine d_rkr_solver_dmp
+  end subroutine d_krm_solver_dmp
   !
-  ! Notify whether RKR is used as a global solver
+  ! Notify whether KRM is used as a global solver
   !
-  function d_rkr_solver_is_global(sv) result(val)
+  function d_krm_solver_is_global(sv) result(val)
     implicit none
-    class(amg_d_rkr_solver_type), intent(in) :: sv
+    class(amg_d_krm_solver_type), intent(in) :: sv
     logical  :: val
 
     val = (sv%global)
-  end function d_rkr_solver_is_global
+  end function d_krm_solver_is_global
   !
-  function d_rkr_solver_is_iterative() result(val)
+  function d_krm_solver_is_iterative() result(val)
     implicit none
     logical  :: val
 
     val = .true.
-  end function d_rkr_solver_is_iterative
+  end function d_krm_solver_is_iterative
 
-end module amg_d_rkr_solver
+end module amg_d_krm_solver

amgprec/amg_d_mumps_solver.F90

@@ -3,9 +3,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -78,7 +78,8 @@ module amg_d_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine d_mumps_solver_finalize(sv)
 
 end subroutine d_mumps_solver_finalize
 
-subroutine d_mumps_solver_descr(sv,info,iout,coarse)
+subroutine d_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_d_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine d_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_d_onelev_mod.f90

@@ -1,15 +1,15 @@
-!  
-!   
+!
+!
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!    
-!    (C) Copyright 2020 
-!  
-!        Salvatore Filippone  
-!        Pasqua D'Ambra   
-!        Fabio Durastante        
-!   
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Fabio Durastante
+!
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
 !    are met:
@@ -21,7 +21,7 @@
 !      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
-!   
+!
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
@@ -33,22 +33,22 @@
 !    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 !    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 !    POSSIBILITY OF SUCH DAMAGE.
-!   
-!  
+!
+!
 ! File: amg_d_onelev_mod.f90
 !
 ! Module: amg_d_onelev_mod
 !
-!  This module defines: 
+!  This module defines:
 !  - the amg_d_onelev_type data structure containing one level
 !    of a multilevel  preconditioner and related
 !    data structures;
 !
 !  It contains routines for
-!  - Building and applying; 
+!  - Building and applying;
 !  - checking if the preconditioner is correctly defined;
 !  - printing a	description of the preconditioner;
-!  - deallocating the preconditioner data structure.  
+!  - deallocating the preconditioner data structure.
 !
 
 module amg_d_onelev_mod
@@ -56,6 +56,8 @@ module amg_d_onelev_mod
   use amg_base_prec_type
   use amg_d_base_smoother_mod
   use amg_d_dec_aggregator_mod
+  use amg_d_parmatch_aggregator_mod
+
   use psb_base_mod, only : psb_dspmat_type, psb_d_vect_type, &
        & psb_d_base_vect_type, psb_ldspmat_type,  psb_dlinmap_type, psb_dpk_, &
        & psb_ipk_, psb_epk_, psb_lpk_, psb_desc_type, psb_i_base_vect_type, &
@@ -73,16 +75,16 @@ module amg_d_onelev_mod
   !    class(amg_d_base_smoother_type), pointer       :: sm2 => null()
   !    class(amg_dmlprec_wrk_type), allocatable       :: wrk
   !    class(amg_d_base_aggregator_type), allocatable :: aggr
-  !    type(amg_dml_parms)             :: parms 
+  !    type(amg_dml_parms)             :: parms
   !    type(psb_dspmat_type)           :: ac
   !    type(psb_desc_type)             :: desc_ac
-  !    type(psb_dspmat_type), pointer  :: base_a    => null() 
-  !    type(psb_desc_type), pointer    :: base_desc => null() 
+  !    type(psb_dspmat_type), pointer  :: base_a    => null()
+  !    type(psb_desc_type), pointer    :: base_desc => null()
   !    type(psb_dlinmap_type)          :: map
   !  end type amg_donelev_type
   !
   !  Note that d denotes the kind of the real data type to be chosen
-  !  according to single/double precision version of MLD2P4.
+  !  according to single/double precision version of AMG4PSBLAS.
   !
   !   sm,sm2a      -  class(amg_d_base_smoother_type), allocatable
   !                   The current level pre- and post-smooother.
@@ -93,7 +95,7 @@ module amg_d_onelev_mod
   !                   Workspace for application of preconditioner; may be
   !                   pre-allocated to save time in the application within a
   !                   Krylov solver.
-  !   aggr         -  class(amg_d_base_aggregator_type), allocatable 
+  !   aggr         -  class(amg_d_base_aggregator_type), allocatable
   !                   The aggregator object: holds the algorithmic choices and
   !                   (possibly) additional data for building the aggregation.
   !   parms        -  type(amg_dml_parms)
@@ -104,7 +106,7 @@ module amg_d_onelev_mod
   !                   The communication descriptor associated to the matrix
   !                   stored in ac.
   !   base_a       -  type(psb_dspmat_type), pointer.
-  !                   Pointer (really a pointer!) to the local part of the current 
+  !                   Pointer (really a pointer!) to the local part of the current
   !                   matrix (so we have a unified treatment of residuals).
   !                   We need this to avoid passing explicitly the current matrix
   !                   to the routine which applies the preconditioner.
@@ -115,13 +117,13 @@ module amg_d_onelev_mod
   !                   vector spaces associated to the index spaces of the previous
   !                   and current levels.
   !
-  !   Methods:  
+  !   Methods:
   !     Most methods follow the encapsulation hierarchy: they take whatever action
   !     is appropriate for the current object, then call the corresponding method for
   !     the contained object.
   !     As an example: the descr() method prints out a description of the
   !     level. It starts by invoking the descr() method of the parms object,
-  !     then calls the descr() method of the smoother object. 
+  !     then calls the descr() method of the smoother object.
   !
   !    descr      -   Prints a description of the object.
   !    default    -   Set default values
@@ -130,14 +132,14 @@ module amg_d_onelev_mod
   !                   it is passed to the smoother object for further processing.
   !    check        -  Sanity checks.
   !    sizeof       -  Total memory occupation in bytes
-  !    get_nzeros   -  Number of nonzeros 
+  !    get_nzeros   -  Number of nonzeros
   !    get_wrksz    -  How many workspace vector does apply_vect need
   !    allocate_wrk -  Allocate auxiliary workspace
   !    free_wrk     -  Free     auxiliary workspace
   !    bld_tprol    -  Invoke the aggr method to build the tentative prolongator
-  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix. 
+  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix.
+  !
   !
-  !  
   type amg_dmlprec_wrk_type
     real(psb_dpk_), allocatable  :: tx(:), ty(:), x2l(:), y2l(:)
     type(psb_d_vect_type)  :: vtx, vty, vx2l, vy2l
@@ -148,10 +150,10 @@ module amg_d_onelev_mod
     procedure, pass(wk) :: clone      => d_wrk_clone
     procedure, pass(wk) :: move_alloc => d_wrk_move_alloc
     procedure, pass(wk) :: cnv        => d_wrk_cnv
-    procedure, pass(wk) :: sizeof     => d_wrk_sizeof    
+    procedure, pass(wk) :: sizeof     => d_wrk_sizeof
   end type amg_dmlprec_wrk_type
   private :: d_wrk_alloc, d_wrk_free, &
-       & d_wrk_clone, d_wrk_move_alloc, d_wrk_cnv, d_wrk_sizeof    
+       & d_wrk_clone, d_wrk_move_alloc, d_wrk_cnv, d_wrk_sizeof
 
   type amg_d_remap_data_type
     type(psb_dspmat_type)          :: ac_pre_remap
@@ -161,19 +163,19 @@ module amg_d_onelev_mod
   contains
     procedure, pass(rmp) :: clone   => d_remap_data_clone
   end type amg_d_remap_data_type
-  
+
   type amg_d_onelev_type
     class(amg_d_base_smoother_type), allocatable   :: sm, sm2a
     class(amg_d_base_smoother_type), pointer       :: sm2 => null()
     class(amg_dmlprec_wrk_type), allocatable       :: wrk
     class(amg_d_base_aggregator_type), allocatable :: aggr
-    type(amg_dml_parms)              :: parms 
+    type(amg_dml_parms)              :: parms
     type(psb_dspmat_type)            :: ac
     integer(psb_ipk_)                :: ac_nz_loc
     integer(psb_lpk_)                :: ac_nz_tot
     type(psb_desc_type)              :: desc_ac
-    type(psb_dspmat_type), pointer   :: base_a    => null() 
-    type(psb_desc_type), pointer     :: base_desc => null() 
+    type(psb_dspmat_type), pointer   :: base_a    => null()
+    type(psb_desc_type), pointer     :: base_desc => null()
     type(psb_ldspmat_type)           :: tprol
     type(psb_dlinmap_type)           :: linmap
     type(amg_d_remap_data_type)      :: remap_data
@@ -186,8 +188,10 @@ module amg_d_onelev_mod
     procedure, pass(lv) :: clone   => d_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_d_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_d_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_d_base_onelev_memory_use
     procedure, pass(lv) :: default => d_base_onelev_default
     procedure, pass(lv) :: free    => amg_d_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_d_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => d_base_onelev_nullify
     procedure, pass(lv) :: check => amg_d_base_onelev_check
     procedure, pass(lv) :: dump  => amg_d_base_onelev_dump
@@ -197,7 +201,7 @@ module amg_d_onelev_mod
     procedure, pass(lv) :: setsm => amg_d_base_onelev_setsm
     procedure, pass(lv) :: setsv => amg_d_base_onelev_setsv
     procedure, pass(lv) :: setag => amg_d_base_onelev_setag
-    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag 
+    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag
     procedure, pass(lv) :: sizeof => d_base_onelev_sizeof
     procedure, pass(lv) :: get_nzeros => d_base_onelev_get_nzeros
     procedure, pass(lv) :: get_wrksz => d_base_onelev_get_wrksize
@@ -205,8 +209,8 @@ module amg_d_onelev_mod
     procedure, pass(lv) :: free_wrk       => d_base_onelev_free_wrk
     procedure, nopass   :: stringval => amg_stringval
     procedure, pass(lv) :: move_alloc => d_base_onelev_move_alloc
-    
-    
+
+
     procedure, pass(lv) :: map_rstr_a => amg_d_base_onelev_map_rstr_a
     procedure, pass(lv) :: map_prol_a => amg_d_base_onelev_map_prol_a
     procedure, pass(lv) :: map_rstr_v => amg_d_base_onelev_map_rstr_v
@@ -226,11 +230,11 @@ module amg_d_onelev_mod
        & d_base_onelev_get_wrksize, d_base_onelev_allocate_wrk, &
        & d_base_onelev_free_wrk
 
-  interface 
+  interface
     subroutine amg_d_base_onelev_mat_asb(lv,a,desc_a,ilaggr,nlaggr,t_prol,info)
       import :: psb_dspmat_type, psb_desc_type, psb_dpk_, psb_ipk_, psb_ldspmat_type, psb_lpk_
       import :: amg_d_onelev_type
-      implicit none 
+      implicit none
       class(amg_d_onelev_type), intent(inout), target :: lv
       type(psb_dspmat_type), intent(in) :: a
       type(psb_desc_type), intent(inout)  :: desc_a
@@ -255,141 +259,172 @@ module amg_d_onelev_mod
     end subroutine amg_d_base_onelev_build
   end interface
 
-  interface 
-    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout)
+  interface
+    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_d_onelev_type), intent(in) :: lv
-      integer(psb_ipk_), intent(in)                 :: il,nl,ilmin
-      integer(psb_ipk_), intent(out)                :: info
-      integer(psb_ipk_), intent(in), optional       :: iout
+      class(amg_d_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_base_onelev_descr
   end interface
 
-  interface 
+  interface
+    subroutine amg_d_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_d_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_d_base_onelev_memory_use
+  end interface
+
+  interface
     subroutine amg_d_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_d_onelev_type, psb_d_base_vect_type, psb_dpk_, &
            & psb_d_base_sparse_mat, psb_ipk_, psb_i_base_vect_type
       ! Arguments
-      class(amg_d_onelev_type), intent(inout)            :: lv 
+      class(amg_d_onelev_type), intent(inout)            :: lv
       integer(psb_ipk_), intent(out)                     :: info
       class(psb_d_base_sparse_mat), intent(in), optional :: amold
       class(psb_d_base_vect_type), intent(in), optional  :: vmold
       class(psb_i_base_vect_type), intent(in), optional  :: imold
     end subroutine amg_d_base_onelev_cnv
   end interface
-   
-interface 
+
+  interface
     subroutine amg_d_base_onelev_free(lv,info)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
-      
+      implicit none
+
       class(amg_d_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_d_base_onelev_free
   end interface
-  
-  interface 
+
+  interface
+    subroutine amg_d_base_onelev_free_smoothers(lv,info)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_d_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_base_onelev_free_smoothers
+  end interface
+
+  interface
     subroutine amg_d_base_onelev_check(lv,info)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_d_onelev_type), intent(inout) :: lv 
+      class(amg_d_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)            :: info
     end subroutine amg_d_base_onelev_check
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_setsm(lv,val,info,pos)
       import :: psb_dpk_, amg_d_onelev_type, amg_d_base_smoother_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_d_onelev_type), target, intent(inout) :: lv 
+      class(amg_d_onelev_type), target, intent(inout) :: lv
       class(amg_d_base_smoother_type), intent(in)     :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_d_base_onelev_setsm
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_setsv(lv,val,info,pos)
       import :: psb_dpk_, amg_d_onelev_type, amg_d_base_solver_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_d_onelev_type), target, intent(inout) :: lv 
+      class(amg_d_onelev_type), target, intent(inout) :: lv
       class(amg_d_base_solver_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_d_base_onelev_setsv
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_setag(lv,val,info,pos)
       import :: psb_dpk_, amg_d_onelev_type, amg_d_base_aggregator_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_d_onelev_type), target, intent(inout) :: lv 
+      class(amg_d_onelev_type), target, intent(inout) :: lv
       class(amg_d_base_aggregator_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_d_base_onelev_setag
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_cseti(lv,what,val,info,pos,idx)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_d_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_d_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       integer(psb_ipk_), intent(in)             :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_d_base_onelev_cseti
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_csetc(lv,what,val,info,pos,idx)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_d_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_d_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       character(len=*), intent(in)              :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_d_base_onelev_csetc
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_d_base_onelev_csetr(lv,what,val,info,pos,idx)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
-      class(amg_d_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+
+      class(amg_d_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       real(psb_dpk_), intent(in)                 :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
@@ -397,13 +432,13 @@ interface
     end subroutine amg_d_base_onelev_csetr
   end interface
 
-  interface 
+  interface
     subroutine amg_d_base_onelev_dump(lv,level,info,prefix,head,ac,rp,smoother,&
          & solver,tprol,global_num)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
+      implicit none
       class(amg_d_onelev_type), intent(in) :: lv
       integer(psb_ipk_), intent(in)          :: level
       integer(psb_ipk_), intent(out)         :: info
@@ -435,7 +470,7 @@ interface
     end subroutine amg_d_base_onelev_map_rstr_v
   end interface
 
-  interface 
+  interface
     subroutine amg_d_base_onelev_map_prol_a(lv,alpha,v,beta,u,info,work)
       import
       implicit none
@@ -458,15 +493,15 @@ interface
       type(psb_d_vect_type), optional, target, intent(inout)  :: vtx,vty
     end subroutine amg_d_base_onelev_map_prol_v
   end interface
-  
+
 contains
   !
   ! Function returning the size of the amg_prec_type data structure
-  ! in bytes or in number of nonzeros of the operator(s) involved. 
+  ! in bytes or in number of nonzeros of the operator(s) involved.
   !
 
   function d_base_onelev_get_nzeros(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_d_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
@@ -478,16 +513,16 @@ contains
   end function d_base_onelev_get_nzeros
 
   function d_base_onelev_sizeof(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_d_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
-    
+
     val = psb_sizeof_ip+psb_sizeof_lp
     val = val + lv%desc_ac%sizeof()
     val = val + lv%ac%sizeof()
     val = val + lv%tprol%sizeof()
-    val = val + lv%linmap%sizeof() 
+    val = val + lv%linmap%sizeof()
     if (allocated(lv%sm))   val = val + lv%sm%sizeof()
     if (allocated(lv%sm2a)) val = val + lv%sm2a%sizeof()
     if (allocated(lv%aggr)) val = val + lv%aggr%sizeof()
@@ -496,19 +531,19 @@ contains
 
 
   subroutine d_base_onelev_nullify(lv)
-    implicit none 
+    implicit none
 
     class(amg_d_onelev_type), intent(inout) :: lv
 
-    nullify(lv%base_a) 
-    nullify(lv%base_desc) 
+    nullify(lv%base_a)
+    nullify(lv%base_desc)
     nullify(lv%sm2)
   end subroutine d_base_onelev_nullify
 
   !
-  ! Multilevel defaults: 
+  ! Multilevel defaults:
   !  multiplicative vs. additive ML framework;
-  !  Smoothed decoupled aggregation with zero threshold; 
+  !  Smoothed decoupled aggregation with zero threshold;
   !  distributed coarse matrix;
   !  damping omega  computed with the max-norm estimate of the
   !  dominant eigenvalue;
@@ -518,10 +553,10 @@ contains
   subroutine d_base_onelev_default(lv)
 
     Implicit None
- 
+
     ! Arguments
     class(amg_d_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_) :: info 
+    integer(psb_ipk_) :: info
 
     lv%parms%sweeps_pre      = 1
     lv%parms%sweeps_post     = 1
@@ -536,7 +571,7 @@ contains
     lv%parms%aggr_filter     = amg_no_filter_mat_
     lv%parms%aggr_omega_val  = dzero
     lv%parms%aggr_thresh     = 0.01_psb_dpk_
-    
+
     if (allocated(lv%sm)) call lv%sm%default()
     if (allocated(lv%sm2a)) then
       call lv%sm2a%default()
@@ -546,7 +581,7 @@ contains
     end if
     if (.not.allocated(lv%aggr)) allocate(amg_d_dec_aggregator_type :: lv%aggr,stat=info)
     if (allocated(lv%aggr)) call lv%aggr%default()
-    
+
     return
 
   end subroutine d_base_onelev_default
@@ -561,9 +596,9 @@ contains
     type(psb_ldspmat_type), intent(out)  :: t_prol
     type(amg_daggr_data), intent(in)    :: ag_data
     integer(psb_ipk_), intent(out)      :: info
-    
+
     call lv%aggr%bld_tprol(lv%parms,ag_data,a,desc_a,ilaggr,nlaggr,t_prol,info)
-    
+
   end subroutine d_base_onelev_bld_tprol
 
 
@@ -573,7 +608,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine d_base_onelev_update_aggr
 
 
@@ -582,33 +617,33 @@ contains
     Implicit None
 
     ! Arguments
-    class(amg_d_onelev_type), target, intent(inout) :: lv 
+    class(amg_d_onelev_type), target, intent(inout) :: lv
     class(amg_d_onelev_type), target, intent(inout) :: lvout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
 
     info = psb_success_
-    if (allocated(lv%sm)) then 
+    if (allocated(lv%sm)) then
       call lv%sm%clone(lvout%sm,info)
-    else 
-      if (allocated(lvout%sm)) then 
+    else
+      if (allocated(lvout%sm)) then
         call lvout%sm%free(info)
         if (info==psb_success_) deallocate(lvout%sm,stat=info)
       end if
     end if
-    if (allocated(lv%sm2a)) then 
+    if (allocated(lv%sm2a)) then
       call lv%sm%clone(lvout%sm2a,info)
       lvout%sm2 => lvout%sm2a
-    else 
-      if (allocated(lvout%sm2a)) then 
+    else
+      if (allocated(lvout%sm2a)) then
         call lvout%sm2a%free(info)
         if (info==psb_success_) deallocate(lvout%sm2a,stat=info)
       end if
       lvout%sm2 => lvout%sm
     end if
-    if (allocated(lv%aggr)) then 
+    if (allocated(lv%aggr)) then
       call  lv%aggr%clone(lvout%aggr,info)
     else
-      if (allocated(lvout%aggr)) then 
+      if (allocated(lvout%aggr)) then
         call lvout%aggr%free(info)
         if (info==psb_success_) deallocate(lvout%aggr,stat=info)
       end if
@@ -621,7 +656,7 @@ contains
     if (info == psb_success_) call lv%remap_data%clone(lvout%remap_data,info)
     lvout%base_a    => lv%base_a
     lvout%base_desc => lv%base_desc
-    
+
     return
 
   end subroutine d_base_onelev_clone
@@ -630,12 +665,12 @@ contains
     use psb_base_mod
     implicit none
     class(amg_d_onelev_type), target, intent(inout) :: lv, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     b%parms  = lv%parms
     b%szratio = lv%szratio
-    if (associated(lv%sm2,lv%sm2a)) then 
+    if (associated(lv%sm2,lv%sm2a)) then
       call move_alloc(lv%sm,b%sm)
       call move_alloc(lv%sm2a,b%sm2a)
       b%sm2 =>b%sm2a
@@ -646,18 +681,18 @@ contains
     end if
 
     call move_alloc(lv%aggr,b%aggr)
-    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info) 
+    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info)
+    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info)
     b%base_a    => lv%base_a
     b%base_desc => lv%base_desc
-    
+
   end subroutine d_base_onelev_move_alloc
 
-  
+
   function d_base_onelev_get_wrksize(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_d_onelev_type), intent(inout) :: lv
     integer(psb_ipk_)  :: val
 
@@ -678,26 +713,26 @@ contains
     select case(lv%parms%ml_cycle)
     case(amg_add_ml_,amg_mult_ml_,amg_vcycle_ml_, amg_wcycle_ml_)
       ! We're good
-      
+
     case(amg_kcycle_ml_, amg_kcyclesym_ml_)
       !
       ! We need 7 in inneritkcycle.
-      !  Can we reuse vtx? 
-      ! 
+      !  Can we reuse vtx?
+      !
       val = val + 7
-      
+
     case default
       ! Need a better error signaling ?
       val = -1
     end select
-    
+
   end function d_base_onelev_get_wrksize
 
   subroutine d_base_onelev_allocate_wrk(lv,info,vmold)
     use psb_base_mod
     implicit none
     class(amg_d_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     class(psb_d_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: nwv, i
@@ -710,22 +745,22 @@ contains
         !  Need to fix this, we need two different allocations
         !
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
-             & desc2=lv%remap_data%desc_ac_pre_remap)      
+             & desc2=lv%remap_data%desc_ac_pre_remap)
       else
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
       end if
     end if
-    
+
   end subroutine d_base_onelev_allocate_wrk
 
-  
+
   subroutine d_base_onelev_free_wrk(lv,info)
     use psb_base_mod
     implicit none
     class(amg_d_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     !
-    integer(psb_ipk_) :: nwv,i 
+    integer(psb_ipk_) :: nwv,i
     info = psb_success_
 
     if (allocated(lv%wrk)) then
@@ -733,17 +768,17 @@ contains
       if (info == 0) deallocate(lv%wrk,stat=info)
     end if
   end subroutine d_base_onelev_free_wrk
-  
+
   subroutine d_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wk
     integer(psb_ipk_), intent(in)                     :: nwv
     type(psb_desc_type), intent(in)                   :: desc
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_d_base_vect_type), intent(in), optional  :: vmold
     type(psb_desc_type), intent(in), optional          :: desc2
     !
@@ -807,14 +842,14 @@ contains
       end do
     end if
   end subroutine d_wrk_alloc
-    
+
   subroutine d_wrk_free(wk,info)
 
     Implicit None
 
     ! Arguments
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
@@ -835,7 +870,7 @@ contains
     end if
 
   end subroutine d_wrk_free
-    
+
   subroutine d_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -843,11 +878,11 @@ contains
     ! Arguments
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wk
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wkout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
-    
+
     call psb_safe_ab_cpy(wk%tx,wkout%tx,info)
     call psb_safe_ab_cpy(wk%ty,wkout%ty,info)
     call psb_safe_ab_cpy(wk%x2l,wkout%x2l,info)
@@ -869,12 +904,12 @@ contains
     return
 
   end subroutine d_wrk_clone
-  
+
   subroutine d_wrk_move_alloc(wk, b,info)
     implicit none
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wk, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     call move_alloc(wk%tx,b%tx)
     call move_alloc(wk%ty,b%ty)
@@ -887,17 +922,17 @@ contains
     call move_alloc(wk%vx2l%v,b%vx2l%v)
     call move_alloc(wk%vy2l%v,b%vy2l%v)
     call move_alloc(wk%wv,b%wv)
-        
+
   end subroutine d_wrk_move_alloc
 
   subroutine d_wrk_cnv(wk,info,vmold)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_dmlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_d_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: i
@@ -918,7 +953,7 @@ contains
 
   function d_wrk_sizeof(wk) result(val)
     use psb_realloc_mod
-    implicit none 
+    implicit none
     class(amg_dmlprec_wrk_type), intent(in) :: wk
     integer(psb_epk_) :: val
     integer :: i
@@ -937,14 +972,14 @@ contains
       end do
     end if
   end function d_wrk_sizeof
- 
+
   subroutine d_remap_data_clone(rmp, remap_out, info)
     use psb_base_mod
-    implicit none 
+    implicit none
     ! Arguments
     class(amg_d_remap_data_type), target, intent(inout) :: rmp
     class(amg_d_remap_data_type), target, intent(inout) :: remap_out
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
 
@@ -955,7 +990,7 @@ contains
          & call rmp%desc_ac_pre_remap%clone(remap_out%desc_ac_pre_remap,info)
     remap_out%idest = rmp%idest
     call psb_safe_ab_cpy(rmp%isrc,remap_out%isrc,info)
-    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)    
+    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)
   end subroutine d_remap_data_clone
-  
+
 end module amg_d_onelev_mod

amgprec/amg_d_parmatch_aggregator_mod.F90

@@ -0,0 +1,689 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Fabio Durastante
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+! moved here from amg4psblas-extension
+!
+!
+!                             AMG4PSBLAS  Extensions
+!
+!    (C) Copyright 2019
+!
+!                        Salvatore Filippone  Cranfield University
+!        Pasqua D'Ambra         IAC-CNR, Naples, IT
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+!
+!  The aggregator object hosts the aggregation method for building
+!  the multilevel hierarchy. This variant is based on the hybrid method
+!  presented in
+!
+!
+!   sm           -  class(amg_T_base_smoother_type), allocatable
+!                   The current level preconditioner (aka smoother).
+!   parms        -  type(amg_RTml_parms)
+!                   The parameters defining the multilevel strategy.
+!   ac           -  The local part of the current-level matrix, built by
+!                   coarsening the previous-level matrix.
+!   desc_ac      -  type(psb_desc_type).
+!                   The communication descriptor associated to the matrix
+!                   stored in ac.
+!   base_a       -  type(psb_Tspmat_type), pointer.
+!                   Pointer (really a pointer!) to the local part of the current
+!                   matrix (so we have a unified treatment of residuals).
+!                   We need this to avoid passing explicitly the current matrix
+!                   to the routine which applies the preconditioner.
+!   base_desc    -  type(psb_desc_type), pointer.
+!                   Pointer to the communication descriptor associated to the
+!                   matrix pointed by base_a.
+!   map          -  Stores the maps (restriction and prolongation) between the
+!                   vector spaces associated to the index spaces of the previous
+!                   and current levels.
+!
+!   Methods:
+!     Most methods follow the encapsulation hierarchy: they take whatever action
+!     is appropriate for the current object, then call the corresponding method for
+!     the contained object.
+!     As an example: the descr() method prints out a description of the
+!     level. It starts by invoking the descr() method of the parms object,
+!     then calls the descr() method of the smoother object.
+!
+!    descr      -   Prints a description of the object.
+!    default    -   Set default values
+!    dump       -   Dump to file object contents
+!    set        -   Sets various parameters; when a request is unknown
+!                   it is passed to the smoother object for further processing.
+!    check      -   Sanity checks.
+!    sizeof     -   Total memory occupation in bytes
+!    get_nzeros -   Number of nonzeros
+!
+!
+
+module amg_d_parmatch_aggregator_mod
+  use amg_d_base_aggregator_mod
+  use amg_d_matchboxp_mod
+#if defined(SERIAL_MPI)
+  type, extends(amg_d_base_aggregator_type) :: amg_d_parmatch_aggregator_type
+  end type amg_d_parmatch_aggregator_type
+#else 
+  type, extends(amg_d_base_aggregator_type) :: amg_d_parmatch_aggregator_type
+    integer(psb_ipk_) :: matching_alg
+    integer(psb_ipk_) :: n_sweeps   ! When n_sweeps >1 we need an auxiliary descriptor
+    integer(psb_ipk_) :: orig_aggr_size
+    integer(psb_ipk_) :: jacobi_sweeps
+    real(psb_dpk_), allocatable :: w(:), w_nxt(:)
+    type(psb_dspmat_type), allocatable  :: prol, restr
+    type(psb_dspmat_type), allocatable  :: ac, base_a, rwa
+    type(psb_desc_type), allocatable    :: desc_ac, desc_ax, base_desc, rwdesc
+    logical           :: reproducible_matching = .false.
+    logical           :: need_symmetrize       = .false.
+    logical           :: unsmoothed_hierarchy  = .true.
+  contains
+    procedure, pass(ag) :: bld_tprol    => amg_d_parmatch_aggregator_build_tprol
+    procedure, pass(ag) :: mat_bld      => amg_d_parmatch_aggregator_mat_bld
+    procedure, pass(ag) :: mat_asb      => amg_d_parmatch_aggregator_mat_asb
+    procedure, pass(ag) :: inner_mat_asb      => amg_d_parmatch_aggregator_inner_mat_asb
+    procedure, pass(ag) :: bld_map      => amg_d_parmatch_aggregator_bld_map
+    procedure, pass(ag) :: csetc        => amg_d_parmatch_aggr_csetc
+    procedure, pass(ag) :: cseti        => amg_d_parmatch_aggr_cseti
+    procedure, pass(ag) :: default      => amg_d_parmatch_aggr_set_default
+    procedure, pass(ag) :: sizeof       => amg_d_parmatch_aggregator_sizeof
+    procedure, pass(ag) :: update_next  => amg_d_parmatch_aggregator_update_next
+    procedure, pass(ag) :: bld_wnxt     => amg_d_parmatch_bld_wnxt
+    procedure, pass(ag) :: bld_default_w    => amg_d_bld_default_w
+    procedure, pass(ag) :: set_c_default_w  => amg_d_set_prm_c_default_w
+    procedure, pass(ag) :: descr        => amg_d_parmatch_aggregator_descr
+    procedure, pass(ag) :: clone        => amg_d_parmatch_aggregator_clone
+    procedure, pass(ag) :: free         => amg_d_parmatch_aggregator_free
+    procedure, nopass   :: fmt          => amg_d_parmatch_aggregator_fmt
+    procedure, nopass   :: xt_desc      => amg_d_parmatch_aggregator_xt_desc
+  end type amg_d_parmatch_aggregator_type
+
+  interface
+    subroutine  amg_d_parmatch_aggregator_build_tprol(ag,parms,ag_data,&
+         & a,desc_a,ilaggr,nlaggr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_dml_parms), intent(inout)   :: parms
+      type(amg_daggr_data), intent(in)     :: ag_data
+      type(psb_dspmat_type), intent(inout) :: a
+      type(psb_desc_type), intent(inout)     :: desc_a
+      integer(psb_lpk_), allocatable, intent(out) :: ilaggr(:),nlaggr(:)
+      type(psb_ldspmat_type), intent(out)  :: t_prol
+      integer(psb_ipk_), intent(out)      :: info
+    end subroutine amg_d_parmatch_aggregator_build_tprol
+  end interface
+
+  interface
+    subroutine  amg_d_parmatch_aggregator_mat_bld(ag,parms,a,desc_a,ilaggr,nlaggr,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_dml_parms), intent(inout)   :: parms
+      type(psb_dspmat_type), intent(in)    :: a
+      type(psb_desc_type), intent(inout)   :: desc_a
+      integer(psb_lpk_), intent(inout)     :: ilaggr(:), nlaggr(:)
+      type(psb_ldspmat_type), intent(inout)   :: t_prol
+      type(psb_dspmat_type), intent(out)   ::  op_prol,ac,op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)       :: info
+    end subroutine amg_d_parmatch_aggregator_mat_bld
+  end interface
+
+  interface
+    subroutine  amg_d_parmatch_aggregator_mat_asb(ag,parms,a,desc_a,&
+         & ac,desc_ac, op_prol,op_restr,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_dml_parms), intent(inout)    :: parms
+      type(psb_dspmat_type), intent(in)     :: a
+      type(psb_desc_type), intent(inout)    :: desc_a
+      type(psb_dspmat_type), intent(inout) :: op_prol,ac,op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)        :: info
+    end subroutine amg_d_parmatch_aggregator_mat_asb
+  end interface
+
+
+  interface
+    subroutine  amg_d_parmatch_aggregator_inner_mat_asb(ag,parms,a,desc_a,&
+         & ac,desc_ac, op_prol,op_restr,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_dml_parms), intent(inout)    :: parms
+      type(psb_dspmat_type), intent(in)     :: a
+      type(psb_desc_type), intent(in)       :: desc_a
+      type(psb_dspmat_type), intent(inout) :: op_prol,op_restr
+      type(psb_dspmat_type), intent(inout)  :: ac
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)        :: info
+    end subroutine amg_d_parmatch_aggregator_inner_mat_asb
+  end interface
+
+
+  interface
+    subroutine amg_d_parmatch_spmm_bld(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      type(psb_dspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)       :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_dml_parms), intent(inout)      :: parms
+      type(psb_ldspmat_type), intent(inout)   :: t_prol
+      type(psb_dspmat_type), intent(inout)    :: ac, op_prol, op_restr
+      type(psb_desc_type), intent(out)        :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_d_parmatch_spmm_bld
+  end interface
+
+  interface
+    subroutine amg_d_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(psb_dspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)      :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_dml_parms), intent(inout)      :: parms
+      type(psb_ldspmat_type), intent(inout)   :: t_prol
+      type(psb_dspmat_type), intent(inout)      :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_d_parmatch_unsmth_bld
+  end interface
+
+  interface
+    subroutine amg_d_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(psb_dspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)      :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_dml_parms), intent(inout)      :: parms
+      type(psb_ldspmat_type), intent(inout)   :: t_prol
+      type(psb_dspmat_type), intent(inout)    :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_d_parmatch_smth_bld
+  end interface
+
+  interface
+    subroutine amg_d_parmatch_spmm_bld_ov(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data
+      implicit none
+      type(psb_dspmat_type), intent(inout)    :: a
+      type(psb_desc_type), intent(inout)       :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_dml_parms), intent(inout)      :: parms
+      type(psb_ldspmat_type), intent(inout)   :: t_prol
+      type(psb_dspmat_type), intent(inout)    :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(out)          :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_d_parmatch_spmm_bld_ov
+  end interface
+
+  interface
+    subroutine amg_d_parmatch_spmm_bld_inner(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_d_parmatch_aggregator_type, psb_desc_type, psb_dspmat_type,&
+           & psb_ldspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_dml_parms, amg_daggr_data,&
+           & psb_d_csr_sparse_mat, psb_ld_csr_sparse_mat
+      implicit none
+      type(psb_d_csr_sparse_mat), intent(inout) :: a
+      type(psb_desc_type), intent(inout)          :: desc_a
+      integer(psb_lpk_), intent(inout)          :: ilaggr(:), nlaggr(:)
+      type(amg_dml_parms), intent(inout)        :: parms
+      type(psb_ldspmat_type), intent(inout)     :: t_prol
+      type(psb_dspmat_type), intent(inout)      :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(out)          :: desc_ac
+      integer(psb_ipk_), intent(out)            :: info
+    end subroutine amg_d_parmatch_spmm_bld_inner
+  end interface
+
+  private :: is_legal_malg, is_legal_csize, is_legal_nsweeps, is_legal_nlevels
+
+contains
+
+  subroutine amg_d_bld_default_w(ag,nr)
+    use psb_realloc_mod
+    implicit none
+    class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_ipk_), intent(in) :: nr
+    integer(psb_ipk_) :: info
+    call psb_realloc(nr,ag%w,info)
+    if (info /= psb_success_) return
+    ag%w = done
+    !call ag%set_c_default_w()
+  end subroutine amg_d_bld_default_w
+
+  subroutine amg_d_set_prm_c_default_w(ag)
+    use psb_realloc_mod
+    use iso_c_binding
+    implicit none
+    class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_ipk_) :: info
+
+    !write(0,*) 'prm_c_deafult_w '
+    call psb_safe_ab_cpy(ag%w,ag%w_nxt,info)
+
+  end subroutine amg_d_set_prm_c_default_w
+
+  subroutine amg_d_parmatch_bld_wnxt(ag,ilaggr,valaggr,nx)
+    use psb_realloc_mod
+    implicit none
+    class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_lpk_), intent(in)  :: ilaggr(:)
+    real(psb_dpk_), intent(in)     :: valaggr(:)
+    integer(psb_ipk_), intent(in)  :: nx
+
+    integer(psb_ipk_) :: info,i,j
+
+    ! The vector was already fixed in the call to BCMatch.
+    !write(0,*) 'Executing bld_wnxt ',nx
+    call psb_realloc(nx,ag%w_nxt,info)
+
+  end subroutine amg_d_parmatch_bld_wnxt
+
+  function amg_d_parmatch_aggregator_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Parallel Matching aggregation"
+  end function amg_d_parmatch_aggregator_fmt
+
+  function amg_d_parmatch_aggregator_xt_desc() result(val)
+    implicit none
+    logical  :: val
+
+    val = .true.
+  end function amg_d_parmatch_aggregator_xt_desc
+
+  function amg_d_parmatch_aggregator_sizeof(ag) result(val)
+    use psb_realloc_mod
+    implicit none
+    class(amg_d_parmatch_aggregator_type), intent(in)  :: ag
+    integer(psb_epk_)  :: val
+
+    val = 4
+    val = val + psb_size(ag%w) + psb_size(ag%w_nxt)
+    if (allocated(ag%ac))      val = val + ag%ac%sizeof()
+    if (allocated(ag%base_a))  val = val + ag%base_a%sizeof()
+    if (allocated(ag%prol))    val = val + ag%prol%sizeof()
+    if (allocated(ag%restr))   val = val + ag%restr%sizeof()
+    if (allocated(ag%desc_ac)) val = val + ag%desc_ac%sizeof()
+    if (allocated(ag%base_desc)) val = val + ag%base_desc%sizeof()
+    if (allocated(ag%desc_ax)) val = val + ag%desc_ax%sizeof()
+
+  end function amg_d_parmatch_aggregator_sizeof
+
+  subroutine  amg_d_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
+    implicit none
+    class(amg_d_parmatch_aggregator_type), intent(in) :: ag
+    type(amg_dml_parms), intent(in)   :: parms
+    integer(psb_ipk_), intent(in)  :: iout
+    integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
+
+    return
+  end subroutine amg_d_parmatch_aggregator_descr
+
+  function is_legal_malg(alg) result(val)
+    logical :: val
+    integer(psb_ipk_) :: alg
+
+    val = (0==alg)
+  end function is_legal_malg
+
+  function is_legal_csize(csize) result(val)
+    logical :: val
+    integer(psb_ipk_) :: csize
+
+    val = ((-1==csize).or.(csize >0))
+  end function is_legal_csize
+
+  function is_legal_nsweeps(nsw) result(val)
+    logical :: val
+    integer(psb_ipk_) :: nsw
+
+    val = (1<=nsw)
+  end function is_legal_nsweeps
+
+  function is_legal_nlevels(nlv) result(val)
+    logical :: val
+    integer(psb_ipk_) :: nlv
+
+    val = (1<=nlv)
+  end function is_legal_nlevels
+
+
+  subroutine  amg_d_parmatch_aggregator_update_next(ag,agnext,info)
+    use psb_realloc_mod
+    implicit none
+    class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+    class(amg_d_base_aggregator_type), target, intent(inout) :: agnext
+    integer(psb_ipk_), intent(out)       :: info
+
+    !
+    !
+    select type(agnext)
+    class is (amg_d_parmatch_aggregator_type)
+      if (.not.is_legal_malg(agnext%matching_alg)) &
+           & agnext%matching_alg = ag%matching_alg
+      if (.not.is_legal_nsweeps(agnext%n_sweeps))&
+           & agnext%n_sweeps     = ag%n_sweeps
+!!$      if (.not.is_legal_csize(agnext%max_csize))&
+!!$           & agnext%max_csize    = ag%max_csize
+!!$      if (.not.is_legal_nlevels(agnext%max_nlevels))&
+!!$           & agnext%max_nlevels  = ag%max_nlevels
+      ! Is this going to generate shallow copies/memory leaks/double frees?
+      ! To be investigated further.
+      call psb_safe_ab_cpy(ag%w_nxt,agnext%w,info)
+      call agnext%set_c_default_w()
+      if (ag%unsmoothed_hierarchy) then
+        agnext%unsmoothed_hierarchy = .true.
+        call move_alloc(ag%rwdesc,agnext%base_desc)
+        call move_alloc(ag%rwa,agnext%base_a)
+      end if
+
+    class default
+      ! What should we do here?
+    end select
+    info = 0
+  end subroutine amg_d_parmatch_aggregator_update_next
+
+  subroutine amg_d_parmatch_aggr_csetc(ag,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=*), intent(in)                  :: what
+    character(len=*), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, iwhat
+    character(len=20)  :: name='d_parmatch_aggr_cseti'
+    info = psb_success_
+
+    ! For now we ignore IDX
+
+    select case(psb_toupper(trim(what)))
+    case('PRMC_REPRODUCIBLE_MATCHING')
+      select case(psb_toupper(trim(val)))
+      case('F','FALSE')
+        ag%reproducible_matching = .false.
+      case('REPRODUCIBLE','TRUE','T')
+        ag%reproducible_matching =.true.
+      end select
+    case('PRMC_NEED_SYMMETRIZE')
+      select case(psb_toupper(trim(val)))
+      case('FALSE','F')
+        ag%need_symmetrize = .false.
+      case('SYMMETRIZE','TRUE','T')
+        ag%need_symmetrize =.true.
+      end select
+    case('PRMC_UNSMOOTHED_HIERARCHY')
+      select case(psb_toupper(trim(val)))
+      case('F','FALSE')
+        ag%unsmoothed_hierarchy = .false.
+      case('T','TRUE')
+        ag%unsmoothed_hierarchy =.true.
+      end select
+    case default
+      ! Do nothing
+    end select
+    return
+  end subroutine amg_d_parmatch_aggr_csetc
+
+  subroutine amg_d_parmatch_aggr_cseti(ag,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=*), intent(in)                  :: what
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, iwhat
+    character(len=20)  :: name='d_parmatch_aggr_cseti'
+    info = psb_success_
+
+    ! For now we ignore IDX
+
+    select case(psb_toupper(trim(what)))
+    case('PRMC_MATCH_ALG')
+      ag%matching_alg=val
+    case('PRMC_SWEEPS')
+      ag%n_sweeps=val
+    case('AGGR_SIZE')
+      ag%orig_aggr_size = val
+      ag%n_sweeps=max(1,ceiling(log(val*1.0)/log(2.0)))
+    case('PRMC_W_SIZE')
+      call ag%bld_default_w(val)
+    case('PRMC_REPRODUCIBLE_MATCHING')
+      ag%reproducible_matching = (val == 1)
+    case('PRMC_NEED_SYMMETRIZE')
+      ag%need_symmetrize = (val == 1)
+    case('PRMC_UNSMOOTHED_HIERARCHY')
+      ag%unsmoothed_hierarchy = (val == 1)
+    case default
+      ! Do nothing
+    end select
+    return
+  end subroutine amg_d_parmatch_aggr_cseti
+
+  subroutine amg_d_parmatch_aggr_set_default(ag)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=20)  :: name='d_parmatch_aggr_set_default'
+    call ag%amg_d_base_aggregator_type%default()
+    ag%matching_alg  = 0
+    ag%n_sweeps      = 1
+    ag%jacobi_sweeps = 0
+!!$    ag%max_nlevels   = 36
+!!$    ag%max_csize     = -1
+    !
+    ! Apparently BootCMatch works better
+    ! by keeping all entries
+    !
+    ag%do_clean_zeros = .false.
+
+    return
+
+  end subroutine amg_d_parmatch_aggr_set_default
+
+  subroutine  amg_d_parmatch_aggregator_free(ag,info)
+    use iso_c_binding
+    implicit none
+    class(amg_d_parmatch_aggregator_type), intent(inout) :: ag
+    integer(psb_ipk_), intent(out)       :: info
+
+    info = 0
+    if ((info == 0).and.allocated(ag%w)) deallocate(ag%w,stat=info)
+    if ((info == 0).and.allocated(ag%w_nxt)) deallocate(ag%w_nxt,stat=info)
+    if ((info == 0).and.allocated(ag%prol)) then
+      call ag%prol%free(); deallocate(ag%prol,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%restr)) then
+      call ag%restr%free(); deallocate(ag%restr,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%ac)) then
+      call ag%ac%free(); deallocate(ag%ac,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%base_a)) then
+      call ag%base_a%free(); deallocate(ag%base_a,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%rwa)) then
+      call ag%rwa%free(); deallocate(ag%rwa,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%desc_ac)) then
+      call ag%desc_ac%free(info); deallocate(ag%desc_ac,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%desc_ax)) then
+      call ag%desc_ax%free(info); deallocate(ag%desc_ax,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%base_desc)) then
+      call ag%base_desc%free(info); deallocate(ag%base_desc,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%rwdesc)) then
+      call ag%rwdesc%free(info); deallocate(ag%rwdesc,stat=info)
+    end if
+
+  end subroutine amg_d_parmatch_aggregator_free
+
+  subroutine  amg_d_parmatch_aggregator_clone(ag,agnext,info)
+    implicit none
+    class(amg_d_parmatch_aggregator_type), intent(inout) :: ag
+    class(amg_d_base_aggregator_type), allocatable, intent(inout) :: agnext
+    integer(psb_ipk_), intent(out)       :: info
+
+    info = 0
+    if (allocated(agnext)) then
+      call agnext%free(info)
+      if (info == 0) deallocate(agnext,stat=info)
+    end if
+    if (info /= 0) return
+    allocate(agnext,source=ag,stat=info)
+    select type(agnext)
+    class is (amg_d_parmatch_aggregator_type)
+      call agnext%set_c_default_w()
+    class default
+      ! Should never ever get here
+      info = -1
+    end select
+  end subroutine amg_d_parmatch_aggregator_clone
+
+  subroutine  amg_d_parmatch_aggregator_bld_map(ag,desc_a,desc_ac,ilaggr,nlaggr,&
+       & op_restr,op_prol,map,info)
+    use psb_base_mod
+    implicit none
+    class(amg_d_parmatch_aggregator_type), target, intent(inout) :: ag
+    type(psb_desc_type), intent(in), target :: desc_a, desc_ac
+    integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+    type(psb_dspmat_type), intent(inout)   :: op_prol, op_restr
+    type(psb_dlinmap_type), intent(out)     :: map
+    integer(psb_ipk_), intent(out)          :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='d_parmatch_aggregator_bld_map'
+
+    call psb_erractionsave(err_act)
+    !
+    ! Copy the prolongation/restriction matrices into the descriptor map.
+    !  op_restr => PR^T   i.e. restriction  operator
+    !  op_prol => PR     i.e. prolongation operator
+    !
+    !  For parmatch have an explicit copy of the descriptors
+    !
+    if (allocated(ag%desc_ax)) then
+!!$      write(0,*) 'Building linmap with ag%desc_ax ',ag%desc_ax%get_local_rows(),ag%desc_ax%get_local_cols(),&
+!!$           & desc_ac%get_local_rows(),desc_ac%get_local_cols()
+      map = psb_linmap(psb_map_gen_linear_,ag%desc_ax,&
+           & desc_ac,op_restr,op_prol,ilaggr,nlaggr)
+    else
+      map = psb_linmap(psb_map_gen_linear_,desc_a,&
+           & desc_ac,op_restr,op_prol,ilaggr,nlaggr)
+    end if
+    if(info /= psb_success_) then
+      call psb_errpush(psb_err_from_subroutine_,name,a_err='sp_Free')
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+
+    return
+  end subroutine amg_d_parmatch_aggregator_bld_map
+#endif
+end module amg_d_parmatch_aggregator_mod

amgprec/amg_d_poly_coeff_mod.f90

@@ -0,0 +1,548 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_coeff_mod
+  use psb_base_mod
+
+  real(psb_dpk_), parameter :: amg_d_poly_a_vect(30) = [ &
+       & 0.3333333333333333_psb_dpk_, &
+       & 0.1805359927403007_psb_dpk_, &
+       & 0.1159278464862213_psb_dpk_, &
+       & 0.0820780659590383_psb_dpk_, &
+       & 0.0618496002413377_psb_dpk_, &
+       & 0.0486605823426062_psb_dpk_, &
+       & 0.0395132986024057_psb_dpk_, &
+       & 0.0328701017544880_psb_dpk_, &
+       & 0.0278702862721800_psb_dpk_, &
+       & 0.0239987409600620_psb_dpk_, &
+       & 0.0209304400432259_psb_dpk_, &
+       & 0.0184513099045066_psb_dpk_, &
+       & 0.0164152586042591_psb_dpk_, &
+       & 0.0147195638076874_psb_dpk_, &
+       & 0.0132901324757843_psb_dpk_, &
+       & 0.0120723317737698_psb_dpk_, &
+       & 0.0110250964606384_psb_dpk_, &
+       & 0.0101170330064859_psb_dpk_, &
+       & 0.0093237789039835_psb_dpk_, &
+       & 0.0086261728849515_psb_dpk_, &
+       & 0.0080089618703679_psb_dpk_, &
+       & 0.0074598709610601_psb_dpk_, &
+       & 0.0069689238144320_psb_dpk_, &
+       & 0.0065279387776372_psb_dpk_, &
+       & 0.0061301503808627_psb_dpk_, &
+       & 0.0057699215598864_psb_dpk_, &
+       & 0.0054425224281914_psb_dpk_, &
+       & 0.0051439584672521_psb_dpk_, &
+       & 0.0048708358327268_psb_dpk_, &
+       & 0.0046202548314912_psb_dpk_ ];
+  
+  real(psb_dpk_), parameter :: amg_d_poly_beta_vect(900) = [ &
+       & 1.1250000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, &
+       & 1.3375312590961856_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0039131042728535_psb_dpk_, 1.0403581118859304_psb_dpk_, &
+       & 1.1486349854625493_psb_dpk_, 1.3826886924100055_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0021293014616472_psb_dpk_, 1.0217371154926094_psb_dpk_, &
+       & 1.0787243319260302_psb_dpk_, 1.1981006529266300_psb_dpk_, &
+       & 1.4132254279168215_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
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+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000269609460124_psb_dpk_, 1.0002699137181752_psb_dpk_, &
+       & 1.0009464748475532_psb_dpk_, 1.0022775198638552_psb_dpk_, &
+       & 1.0044888368184179_psb_dpk_, 1.0078128087804721_psb_dpk_, &
+       & 1.0124901352066715_psb_dpk_, 1.0187716022931539_psb_dpk_, &
+       & 1.0269199126829005_psb_dpk_, 1.0372115852204526_psb_dpk_, &
+       & 1.0499389358225151_psb_dpk_, 1.0654121509688057_psb_dpk_, &
+       & 1.0839614658147161_psb_dpk_, 1.1059394594887115_psb_dpk_, &
+       & 1.1317234807654135_psb_dpk_, 1.1617182180038959_psb_dpk_, &
+       & 1.1963584280123116_psb_dpk_, 1.2361118393501820_psb_dpk_, &
+       & 1.2814822465106404_psb_dpk_, 1.3330128124440397_psb_dpk_, &
+       & 1.3912895979940381_psb_dpk_, 1.4569453380258381_psb_dpk_, &
+       & 1.5306634853375161_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000237911597230_psb_dpk_, 1.0002381585998457_psb_dpk_, &
+       & 1.0008349974382460_psb_dpk_, 1.0020088476285827_psb_dpk_, &
+       & 1.0039582343156432_psb_dpk_, 1.0068870298152559_psb_dpk_, &
+       & 1.0110058445931565_psb_dpk_, 1.0165334547611182_psb_dpk_, &
+       & 1.0236982737890488_psb_dpk_, 1.0327398763510158_psb_dpk_, &
+       & 1.0439105824804926_psb_dpk_, 1.0574771105088172_psb_dpk_, &
+       & 1.0737223076000839_psb_dpk_, 1.0929469670793606_psb_dpk_, &
+       & 1.1154717421787756_psb_dpk_, 1.1416391663018148_psb_dpk_, &
+       & 1.1718157904303341_psb_dpk_, 1.2063944488757254_psb_dpk_, &
+       & 1.2457966652063013_psb_dpk_, 1.2904752108716941_psb_dpk_, &
+       & 1.3409168297942540_psb_dpk_, 1.3976451430108305_psb_dpk_, &
+       & 1.4612237483301715_psb_dpk_, 1.5322595309246121_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000210994601235_psb_dpk_, 1.0002111968041199_psb_dpk_, &
+       & 1.0007403694573151_psb_dpk_, 1.0017808593384865_psb_dpk_, &
+       & 1.0035081686576977_psb_dpk_, 1.0061021720448531_psb_dpk_, &
+       & 1.0097482505685551_psb_dpk_, 1.0146384533048582_psb_dpk_, &
+       & 1.0209726922414943_psb_dpk_, 1.0289599764553270_psb_dpk_, &
+       & 1.0388196916802268_psb_dpk_, 1.0507829315895938_psb_dpk_, &
+       & 1.0650938873538003_psb_dpk_, 1.0820113022982043_psb_dpk_, &
+       & 1.1018099987843295_psb_dpk_, 1.1247824847650900_psb_dpk_, &
+       & 1.1512406478277994_psb_dpk_, 1.1815175449359154_psb_dpk_, &
+       & 1.2159692965153148_psb_dpk_, 1.2549770940040335_psb_dpk_, &
+       & 1.2989493304988182_psb_dpk_, 1.3483238646890843_psb_dpk_, &
+       & 1.4035704288718982_psb_dpk_, 1.4651931924923849_psb_dpk_, &
+       & 1.5337334933563860_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000187989989242_psb_dpk_, 1.0001881567984481_psb_dpk_, &
+       & 1.0006595227084085_psb_dpk_, 1.0015861311895899_psb_dpk_, &
+       & 1.0031239047778964_psb_dpk_, 1.0054323694760092_psb_dpk_, &
+       & 1.0086755868504005_psb_dpk_, 1.0130231071421940_psb_dpk_, &
+       & 1.0186509477893992_psb_dpk_, 1.0257426018654052_psb_dpk_, &
+       & 1.0344900810652515_psb_dpk_, 1.0450949980170887_psb_dpk_, &
+       & 1.0577696928624343_psb_dpk_, 1.0727384092356933_psb_dpk_, &
+       & 1.0902385249817814_psb_dpk_, 1.1105218431816117_psb_dpk_, &
+       & 1.1338559493090710_psb_dpk_, 1.1605256406217599_psb_dpk_, &
+       & 1.1908344341913664_psb_dpk_, 1.2251061603103259_psb_dpk_, &
+       & 1.2636866483695495_psb_dpk_, 1.3069455126904677_psb_dpk_, &
+       & 1.3552780462128098_psb_dpk_, 1.4091072303921326_psb_dpk_, &
+       & 1.4688858701459975_psb_dpk_, 1.5350988632115488_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000168211938973_psb_dpk_, 1.0001683505351420_psb_dpk_, &
+       & 1.0005900360142315_psb_dpk_, 1.0014188084960041_psb_dpk_, &
+       & 1.0027938311393803_psb_dpk_, 1.0048572584314193_psb_dpk_, &
+       & 1.0077550080990554_psb_dpk_, 1.0116375492127350_psb_dpk_, &
+       & 1.0166607098595459_psb_dpk_, 1.0229865078405374_psb_dpk_, &
+       & 1.0307840079371537_psb_dpk_, 1.0402302093961155_psb_dpk_, &
+       & 1.0515109674005423_psb_dpk_, 1.0648219524284319_psb_dpk_, &
+       & 1.0803696515480321_psb_dpk_, 1.0983724158638981_psb_dpk_, &
+       & 1.1190615585080472_psb_dpk_, 1.1426825077681895_psb_dpk_, &
+       & 1.1694960201606786_psb_dpk_, 1.1997794584895700_psb_dpk_, &
+       & 1.2338281401870808_psb_dpk_, 1.2719567615042522_psb_dpk_, &
+       & 1.3145009034164739_psb_dpk_, 1.3618186254259919_psb_dpk_, &
+       & 1.4142921537855777_psb_dpk_, 1.4723296710339275_psb_dpk_, &
+       & 1.5363672141264497_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000151113991291_psb_dpk_, 1.0001512299115287_psb_dpk_, &
+       & 1.0005299814085029_psb_dpk_, 1.0012742317597600_psb_dpk_, &
+       & 1.0025087130476142_psb_dpk_, 1.0043606572645858_psb_dpk_, &
+       & 1.0069604400315522_psb_dpk_, 1.0104422369100252_psb_dpk_, &
+       & 1.0149446949285030_psb_dpk_, 1.0206116219981500_psb_dpk_, &
+       & 1.0275926969588451_psb_dpk_, 1.0360442030716124_psb_dpk_, &
+       & 1.0461297878595799_psb_dpk_, 1.0580212522952626_psb_dpk_, &
+       & 1.0718993724396861_psb_dpk_, 1.0879547567564958_psb_dpk_, &
+       & 1.1063887424550545_psb_dpk_, 1.1274143343577541_psb_dpk_, &
+       & 1.1512571899424711_psb_dpk_, 1.1781566543781672_psb_dpk_, &
+       & 1.2083668495540898_psb_dpk_, 1.2421578212983135_psb_dpk_, &
+       & 1.2798167491932815_psb_dpk_, 1.3216492236219661_psb_dpk_, &
+       & 1.3679805949228399_psb_dpk_, 1.4191573997915068_psb_dpk_, &
+       & 1.4755488703473389_psb_dpk_, 1.5375485315807513_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000136257096588_psb_dpk_, 1.0001363546506836_psb_dpk_, &
+       & 1.0004778107488095_psb_dpk_, 1.0011486612681773_psb_dpk_, &
+       & 1.0022611433613271_psb_dpk_, 1.0039295964948667_psb_dpk_, &
+       & 1.0062710027404669_psb_dpk_, 1.0094055369479136_psb_dpk_, &
+       & 1.0134571288503909_psb_dpk_, 1.0185540391932908_psb_dpk_, &
+       & 1.0248294520252528_psb_dpk_, 1.0324220853457433_psb_dpk_, &
+       & 1.0414768223656390_psb_dpk_, 1.0521453657079123_psb_dpk_, &
+       & 1.0645869169533493_psb_dpk_, 1.0789688840227822_psb_dpk_, &
+       & 1.0954676189818162_psb_dpk_, 1.1142691889576817_psb_dpk_, &
+       & 1.1355701829701565_psb_dpk_, 1.1595785576006521_psb_dpk_, &
+       & 1.1865145245551894_psb_dpk_, 1.2166114833191515_psb_dpk_, &
+       & 1.2501170022543431_psb_dpk_, 1.2872938516530203_psb_dpk_, &
+       & 1.3284210924391027_psb_dpk_, 1.3737952243949607_psb_dpk_, &
+       & 1.4237313979931023_psb_dpk_, 1.4785646941265451_psb_dpk_, &
+       & 1.5386514762605854_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000123285767939_psb_dpk_, 1.0001233683396147_psb_dpk_, &
+       & 1.0004322711781202_psb_dpk_, 1.0010390719329101_psb_dpk_, &
+       & 1.0020451337350940_psb_dpk_, 1.0035535979966428_psb_dpk_, &
+       & 1.0056698406248343_psb_dpk_, 1.0085019360540697_psb_dpk_, &
+       & 1.0121611307132341_psb_dpk_, 1.0167623275769953_psb_dpk_, &
+       & 1.0224245834847208_psb_dpk_, 1.0292716209515502_psb_dpk_, &
+       & 1.0374323562422998_psb_dpk_, 1.0470414455308106_psb_dpk_, &
+       & 1.0582398510249318_psb_dpk_, 1.0711754290010183_psb_dpk_, &
+       & 1.0860035417614331_psb_dpk_, 1.1028876956049132_psb_dpk_, &
+       & 1.1220002069820316_psb_dpk_, 1.1435228990979547_psb_dpk_, &
+       & 1.1676478313209715_psb_dpk_, 1.1945780638597872_psb_dpk_, &
+       & 1.2245284602839432_psb_dpk_, 1.2577265305821996_psb_dpk_, &
+       & 1.2944133175813315_psb_dpk_, 1.3348443296857557_psb_dpk_, &
+       & 1.3792905230439911_psb_dpk_, 1.4280393364047606_psb_dpk_, &
+       & 1.4813957820911738_psb_dpk_, 1.5396835966986973_psb_dpk_ ]
+
+
+
+
+!!$  [1.1250000000000000_psb_dpk_, 0.0_psb_dpk_, 0.0_psb_dpk__psb_dpk_,,&
+!!$       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_,  0.0_psb_dpk_,&
+!!$       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, 1.3375312590961856_psb_dpk_]
+
+  real(psb_dpk_), parameter  :: amg_d_poly_beta_mat(30,30)=reshape(amg_d_poly_beta_vect,[30,30])
+
+end module amg_d_poly_coeff_mod

amgprec/amg_d_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_smoother
+  use amg_d_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_d_base_smoother_type) :: amg_d_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_d_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_dspmat_type), pointer :: pa => null()
+    real(psb_dpk_), allocatable    :: poly_beta(:)
+    real(psb_dpk_)                 :: cf_a = dzero
+    real(psb_dpk_)                 :: rho_ba = -done
+  contains
+    procedure, pass(sm) :: apply_v => amg_d_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_d_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_d_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_d_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_d_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_d_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_d_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_d_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => d_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_d_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_d_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_d_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_d_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => d_poly_smoother_sizeof
+    procedure, pass(sm) :: default => d_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => d_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => d_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => d_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => d_poly_smoother_get_id
+  end type amg_d_poly_smoother_type
+  private :: d_poly_smoother_free, &
+       & d_poly_smoother_sizeof,  d_poly_smoother_get_nzeros, &
+       & d_poly_smoother_get_fmt, d_poly_smoother_get_id, &
+       & d_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_d_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      type(psb_d_vect_type),intent(inout)           :: x
+      type(psb_d_vect_type),intent(inout)           :: y
+      real(psb_dpk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_dpk_),target, intent(inout)           :: work(:)
+      type(psb_d_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_d_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_d_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_d_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+!!$           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_d_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_dpk_),intent(inout)         :: x(:)
+!!$      real(psb_dpk_),intent(inout)         :: y(:)
+!!$      real(psb_dpk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_dpk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_dpk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_d_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_d_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_d_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clear_data(sm,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_d_poly_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_d_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_dpk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine d_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='d_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_poly_smoother_free
+
+  function d_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function d_poly_smoother_sizeof
+
+  subroutine d_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -done
+    sm%variant      = amg_poly_lottes_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine d_poly_smoother_default
+
+  function d_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function d_poly_smoother_get_nzeros
+
+  function d_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function d_poly_smoother_get_wrksize
+
+  function d_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function d_poly_smoother_get_fmt
+
+  function d_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function d_poly_smoother_get_id
+
+
+end module amg_d_poly_smoother

amgprec/amg_d_prec_mod.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -40,7 +40,7 @@
 ! Module: amg_d_prec_mod
 !
 !  This module defines the user interfaces to the real/complex, single/double
-!  precision versions of the user-level MLD2P4 routines.
+!  precision versions of the user-level AMG4PSBLAS routines.
 !
 module amg_d_prec_mod
 
@@ -55,12 +55,7 @@ module amg_d_prec_mod
   use amg_d_ainv_solver
   use amg_d_invk_solver
   use amg_d_invt_solver
-
-  interface amg_precset
-    module procedure amg_d_iprecsetsm, amg_d_iprecsetsv, &
-         & amg_d_cprecseti, amg_d_cprecsetc, amg_d_cprecsetr, &
-         & amg_d_iprecsetag
-  end interface amg_precset
+  use amg_d_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_d_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)
@@ -82,61 +77,4 @@ module amg_d_prec_mod
     end subroutine amg_d_extprol_bld
   end interface amg_extprol_bld
 
-contains
-
-  subroutine amg_d_iprecsetsm(p,val,info,pos)
-    type(amg_dprec_type), intent(inout)    :: p
-    class(amg_d_base_smoother_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)           :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(val,info,pos=pos)
-  end subroutine amg_d_iprecsetsm
-
-  subroutine amg_d_iprecsetsv(p,val,info,pos)
-    type(amg_dprec_type), intent(inout)    :: p
-    class(amg_d_base_solver_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_d_iprecsetsv
-
-  subroutine amg_d_iprecsetag(p,val,info,pos)
-    type(amg_dprec_type), intent(inout)    :: p
-    class(amg_d_base_aggregator_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_d_iprecsetag
-
-  subroutine amg_d_cprecseti(p,what,val,info,pos)
-    type(amg_dprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    integer(psb_ipk_), intent(in)           :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_d_cprecseti
-
-  subroutine amg_d_cprecsetr(p,what,val,info,pos)
-    type(amg_dprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    real(psb_dpk_), intent(in)             :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_d_cprecsetr
-
-  subroutine amg_d_cprecsetc(p,what,val,info,pos)
-    type(amg_dprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    character(len=*), intent(in)            :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_d_cprecsetc
-
 end module amg_d_prec_mod

amgprec/amg_d_prec_type.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -66,7 +66,7 @@ module amg_d_prec_type
   !
   !  This is the data type containing all the information about the multilevel
   !  preconditioner ('d', 's', 'c' and 'z', according to the real/complex,
-  !  single/double precision version of  MLD2P4).
+  !  single/double precision version of  AMG4PSBLAS).
   !  It consists of an array of 'one-level' intermediate data structures
   !  of type amg_donelev_type, each containing the information needed to apply
   !  the smoothing and the coarse-space correction at a generic level. RT is the
@@ -135,8 +135,11 @@ module amg_d_prec_type
     procedure, pass(prec)               :: build        => amg_dprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_d_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_d_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_d_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_d_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_d_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_dfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_dfile_prec_memory_use
   end type amg_dprec_type
 
   private :: amg_d_dump, amg_d_get_compl,  amg_d_cmp_compl,&
@@ -155,16 +158,35 @@ module amg_d_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_dfile_prec_descr(prec,iout,root)
+    subroutine amg_dfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_dprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_dprec_type), intent(in)      :: prec
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_dfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_dfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_dprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_dfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_dprec_sizeof
   end interface
@@ -342,6 +364,14 @@ module amg_d_prec_type
     end subroutine amg_d_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_d_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_d_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -424,11 +454,22 @@ contains
     end if
   end function amg_d_get_nzeros
 
-  function amg_dprec_sizeof(prec) result(val)
+  function amg_dprec_sizeof(prec, global) result(val)
     implicit none
     class(amg_dprec_type), intent(in) :: prec
-    integer(psb_epk_) :: val
+    logical, intent(in), optional :: global
+    integer(psb_epk_) :: val    
     integer(psb_ipk_)        :: i
+    type(psb_ctxt_type) :: ctxt
+    
+    logical :: global_
+
+    if (present(global)) then
+      global_ = global
+    else
+      global_ = .false.
+    end if
+    
     val = 0
     val = val + psb_sizeof_ip
     if (allocated(prec%precv)) then
@@ -436,6 +477,11 @@ contains
         val = val + prec%precv(i)%sizeof()
       end do
     end if
+    if (global_) then
+      ctxt = prec%ctxt
+      call psb_sum(ctxt,val)
+    end if
+
   end function amg_dprec_sizeof
 
   !
@@ -599,6 +645,68 @@ contains
 
   end subroutine amg_d_prec_free
 
+  subroutine amg_d_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_smoothers_free
+
+  subroutine amg_d_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_hierarchy_free
 
 
   !

amgprec/amg_d_slu_solver.F90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -385,20 +385,22 @@ contains
   
   end subroutine d_slu_solver_finalize
 
-  subroutine d_slu_solver_descr(sv,info,iout,coarse)
+  subroutine d_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_sludist_solver.F90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -52,7 +52,7 @@ module amg_d_sludist_solver
   use iso_c_binding
   use amg_d_base_solver_mod
 
-#if defined(LPK8) 
+#if (!defined(HAVE_SLUDIST_)) || defined(IPK8) 
 
   type, extends(amg_d_base_solver_type) :: amg_d_sludist_solver_type
 
@@ -270,10 +270,12 @@ contains
     ! Local variables
     type(psb_dspmat_type) :: atmp
     type(psb_d_csr_sparse_mat) :: acsr
-    integer :: n_row,n_col, nrow_a, nztota, nglob, nzt, npr, npc
-    integer :: ifrst, ibcheck
     type(psb_ctxt_type) :: ctxt
-    integer :: np,me,i, err_act, debug_unit, debug_level
+    integer(psb_lpk_), allocatable :: gia(:), gja(:)
+    integer(psb_lpk_) :: lfrst
+    integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota, nglob, nzt, npr, npc
+    integer(psb_ipk_) :: ifrst, ibcheck
+    integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
     character(len=20)  :: name='d_sludist_solver_bld', ch_err
     
     info=psb_success_
@@ -293,19 +295,36 @@ contains
     n_col  = desc_a%get_local_cols()
     nglob  = desc_a%get_global_rows()
     
-    call a%cscnv(atmp,info,type='coo')
+    !
+    ! Strategy here is as follows: because a call to SLUDIST
+    ! as a gobal solver is mostly done  at the coarsest level,
+    ! even if we start from a problem requiring 8 bytes, chances
+    ! are that the global size will be suitable for 4 bytes
+    ! anyway, so we hope for the best, and throw an error
+    ! if something goes wrong.
+    !
+    if (nglob > huge(1_psb_ipk_)) then
+      write(0,*) me,' ',trim(name),': Error: overflow of local indices '
+      info=psb_err_internal_error_
+      call psb_errpush(info,name)
+      goto 9999
+    end if
+    
+    call a%cscnv(atmp,info,type='csr')
+    ! This in case we are dealing with AS
     call psb_rwextd(n_row,atmp,info,b=b) 
-    call atmp%cscnv(info,type='csr',dupl=psb_dupl_add_)
     call atmp%mv_to(acsr)
     nrow_a = acsr%get_nrows()
     nztota = acsr%get_nzeros()
+    call psb_loc_to_glob(ione,lfrst,desc_a,info)
+    
     ! Fix the entries to call C-base SuperLU
-    call psb_loc_to_glob(1,ifrst,desc_a,info) 
-    call psb_loc_to_glob(nrow_a,ibcheck,desc_a,info) 
-    call psb_loc_to_glob(acsr%ja(1:nztota),desc_a,info,iact='I')
+    call psb_realloc(nztota,gja,info)
+    call psb_loc_to_glob(acsr%ja(1:nztota),gja(1:nztota), desc_a, info, iact='I')
+    acsr%ja(1:nztota) = gja(1:nztota)
     acsr%ja(:)  = acsr%ja(:)  - 1
     acsr%irp(:) = acsr%irp(:) - 1
-    ifrst = ifrst - 1
+    ifrst = lfrst - 1
     info = amg_dsludist_fact(nglob,nrow_a,nztota,ifrst,&
          & acsr%val,acsr%irp,acsr%ja,sv%lufactors,&
          & npr,npc)
@@ -318,7 +337,6 @@ contains
     end if
     
     call acsr%free()
-    call atmp%free()
 
     if (debug_level >= psb_debug_outer_) &
          & write(debug_unit,*) me,' ',trim(name),' end'
@@ -403,15 +421,16 @@ contains
   
   end subroutine d_sludist_solver_finalize
 
-  subroutine d_sludist_solver_descr(sv,info,iout,coarse)
+  subroutine d_sludist_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_sludist_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                           :: info
+    integer, intent(in), optional                  :: iout
+    logical, intent(in), optional                  :: coarse
+    character(len=*), intent(in), optional         :: prefix
 
     ! Local variables
     integer      :: err_act
@@ -419,6 +438,7 @@ contains
     integer      :: me, np
     character(len=20), parameter :: name='amg_d_sludist_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -427,8 +447,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU_Dist Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU_Dist Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_symdec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_d_symdec_aggregator_fmt
   
-  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_symdec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_symdec_aggregator_descr

amgprec/amg_d_umf_solver.F90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -390,20 +390,22 @@ contains
   
   end subroutine d_umf_solver_finalize
 
-  subroutine d_umf_solver_descr(sv,info,iout,coarse)
+  subroutine d_umf_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_umf_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_umf_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -412,8 +414,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  UMFPACK Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  UMFPACK Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_prec_mod.f90

@@ -2,7 +2,7 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
 !    (C) Copyright 2020 
 !  
@@ -40,7 +40,7 @@
 ! Module: amg_prec_mod
 !
 !  This module defines the interfaces to the real/complex, single/double
-!  precision versions of the user-level MLD2P4 routines.
+!  precision versions of the user-level AMG4PSBLAS routines.
 !
 module amg_prec_mod
 

amgprec/amg_prec_type.f90

@@ -2,7 +2,7 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
 !    (C) Copyright 2020 
 !  

amgprec/amg_s_ainv_solver.F90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -55,13 +58,13 @@ module amg_s_ainv_solver
     procedure, pass(sv) :: check   => amg_s_ainv_solver_check
     procedure, pass(sv) :: build   => amg_s_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_s_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_s_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_s_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_s_ainv_solver_csetr
-    procedure, pass(sv) :: seti    => amg_s_ainv_solver_seti
-    procedure, pass(sv) :: setc    => amg_s_ainv_solver_setc
-    procedure, pass(sv) :: setr    => amg_s_ainv_solver_setr
-    generic, public :: set => seti, setr, setc
+!!$    procedure, pass(sv) :: seti    => amg_s_ainv_solver_seti
+!!$    procedure, pass(sv) :: setc    => amg_s_ainv_solver_setc
+!!$    procedure, pass(sv) :: setr    => amg_s_ainv_solver_setr
     procedure, pass(sv) :: descr   => amg_s_ainv_solver_descr
     procedure, pass(sv) :: default => s_ainv_solver_default
     procedure, nopass   :: stringval  => s_ainv_stringval
@@ -83,6 +86,16 @@ module amg_s_ainv_solver
     end subroutine amg_s_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_ainv_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_s_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -159,44 +172,44 @@ module amg_s_ainv_solver
     end subroutine amg_s_ainv_solver_csetr
   end interface
 
-  interface
-    subroutine amg_s_ainv_solver_setc(sv,what,val,info)
-      import :: amg_s_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_s_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      character(len=*), intent(in)                 :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_s_ainv_solver_setc
-  end interface
+!!$  interface
+!!$    subroutine amg_s_ainv_solver_setc(sv,what,val,info)
+!!$      import :: amg_s_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_s_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      character(len=*), intent(in)                 :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_s_ainv_solver_setc
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_s_ainv_solver_seti(sv,what,val,info)
+!!$      import :: amg_s_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_s_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      integer(psb_ipk_), intent(in)                :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_s_ainv_solver_seti
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_s_ainv_solver_setr(sv,what,val,info)
+!!$      import :: amg_s_ainv_solver_type, psb_ipk_, psb_spk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_s_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      real(psb_spk_), intent(in)                   :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_s_ainv_solver_setr
+!!$  end interface
 
   interface
-    subroutine amg_s_ainv_solver_seti(sv,what,val,info)
-      import :: amg_s_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_s_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_s_ainv_solver_seti
-  end interface
-
-  interface
-    subroutine amg_s_ainv_solver_setr(sv,what,val,info)
-      import :: amg_s_ainv_solver_type, psb_ipk_, psb_spk_
-      Implicit none
-      ! Arguments
-      class(amg_s_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_spk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_s_ainv_solver_setr
-  end interface
-
-  interface
-    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -206,7 +219,7 @@ module amg_s_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_ainv_solver_descr
   end interface
 

amgprec/amg_s_as_smoother.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -396,21 +396,23 @@ contains
   end subroutine s_as_smoother_default
 
 
-  subroutine s_as_smoother_descr(sm,info,iout,coarse)
+  subroutine s_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_s_base_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -126,7 +126,7 @@ module amg_s_base_aggregator_mod
            & psb_s_coo_sparse_mat, amg_sml_parms, psb_spk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_s_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_sml_parms), intent(inout)         :: parms 
       type(psb_s_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -144,7 +144,7 @@ module amg_s_base_aggregator_mod
            & psb_s_coo_sparse_mat, amg_sml_parms, psb_spk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_s_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_sml_parms), intent(inout)         :: parms 
       type(psb_s_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_s_base_aggregator_xt_desc
 
-  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_base_aggregator_descr

amgprec/amg_s_base_ainv_mod.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions

amgprec/amg_s_base_smoother_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -272,7 +272,7 @@ module amg_s_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_s_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_s_base_smoother_descr
   end interface
   

amgprec/amg_s_base_solver_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -270,7 +270,7 @@ module amg_s_base_solver_mod
   end interface
   
   interface
-    subroutine amg_s_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_s_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_s_base_solver_descr
   end interface 
   

amgprec/amg_s_dec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_s_dec_aggregator_fmt
   
-  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_dec_aggregator_descr

amgprec/amg_s_diag_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -219,7 +219,7 @@ contains
 
   end subroutine s_diag_solver_free
 
-  subroutine s_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_s_l1_diag_solver
   
 contains
 
-  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_s_gs_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -433,20 +433,22 @@ contains
     return
   end subroutine s_gs_solver_free
 
-  subroutine s_gs_solver_descr(sv,info,iout,coarse)
+  subroutine s_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function s_gs_solver_is_iterative
     
-  subroutine s_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine s_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_s_hybrid_aggregator_mod.F90

@@ -2,7 +2,7 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
 !    (C) Copyright 2020 
 !  

amgprec/amg_s_id_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -157,7 +157,7 @@ contains
     return
   end subroutine s_id_solver_free
 
-  subroutine s_id_solver_descr(sv,info,iout,coarse)
+  subroutine s_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_s_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_s_ilu_fact_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   

amgprec/amg_s_ilu_solver.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_s_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = szero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',szero,is_legal_s_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine s_ilu_solver_free
 
-  subroutine s_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine s_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_s_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_s_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function s_ilu_solver_get_id
 
   function s_ilu_solver_get_wrksize() result(val)

amgprec/amg_s_inner_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -39,7 +39,7 @@
 !
 ! Module: amg_inner_mod
 !
-!  This module defines the interfaces to inner MLD2P4 routines.
+!  This module defines the interfaces to inner AMG4PSBLAS routines.
 !  The interfaces  of the user level routines are defined in amg_prec_mod.f90.
 !
 module amg_s_inner_mod

amgprec/amg_s_invk_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,10 +52,9 @@ module amg_s_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invk_solver_check
     procedure, pass(sv) :: clone   => amg_s_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invk_solver_cseti
-    procedure, pass(sv) :: seti    => amg_s_invk_solver_seti
-    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_s_invk_solver_descr
     procedure, pass(sv) :: default => s_invk_solver_default
   end type amg_s_invk_solver_type
@@ -72,6 +74,17 @@ module amg_s_invk_solver
     end subroutine amg_s_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invk_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -122,7 +135,7 @@ module amg_s_invk_solver
   end interface
 
   interface
-    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -132,22 +145,10 @@ module amg_s_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_invk_solver_descr
   end interface
 
-  interface
-    subroutine amg_s_invk_solver_seti(sv,what,val,info)
-      import :: amg_s_invk_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_s_invk_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_s_invk_solver_seti
-  end interface
-
 contains
 
   subroutine s_invk_solver_default(sv)

amgprec/amg_s_invt_solver.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -49,12 +52,10 @@ module amg_s_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invt_solver_check
     procedure, pass(sv) :: clone   => amg_s_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_s_invt_solver_csetr
-    procedure, pass(sv) :: seti    => amg_s_invt_solver_seti
-    procedure, pass(sv) :: setr    => amg_s_invt_solver_setr
-    generic, public     :: set     => seti, setr
     procedure, pass(sv) :: descr   => amg_s_invt_solver_descr
     procedure, pass(sv) :: default => s_invt_solver_default
   end type amg_s_invt_solver_type
@@ -73,6 +74,17 @@ module amg_s_invt_solver
     end subroutine amg_s_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invt_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -134,44 +146,21 @@ module amg_s_invt_solver
   end interface
 
   interface
-    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_s_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_s_invt_solver_descr
   end interface
 
-  interface
-    subroutine amg_s_invt_solver_setr(sv,what,val,info)
-      import :: amg_s_invt_solver_type, psb_spk_, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_s_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_spk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_s_invt_solver_setr
-  end interface
-
-  interface
-    subroutine amg_s_invt_solver_seti(sv,what,val,info)
-      import :: amg_s_invt_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_s_invt_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine
-  end interface
-
 contains
 
   subroutine s_invt_solver_default(sv)

amgprec/amg_s_jac_smoother.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -219,12 +219,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_jac_smoother_type, psb_ipk_
       class(amg_s_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_s_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_l1_jac_smoother_type, psb_ipk_
       class(amg_s_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_s_l1_jac_smoother_descr
   end interface
 

amgprec/amg_s_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_s_jac_solver_mod.f90
+!
+! Module: amg_s_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_s_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_s_jac_solver
+
+  use amg_s_base_solver_mod
+
+  type, extends(amg_s_base_solver_type) :: amg_s_jac_solver_type
+    type(psb_sspmat_type)      :: a
+    type(psb_s_vect_type), allocatable :: dv
+    real(psb_spk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_spk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_s_jac_solver_dmp
+    procedure, pass(sv) :: check   => s_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_s_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_s_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_s_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_s_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_s_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_s_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_s_jac_solver_apply
+    procedure, pass(sv) :: free    => s_jac_solver_free
+    procedure, pass(sv) :: cseti   => s_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => s_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => s_jac_solver_csetr
+    procedure, pass(sv) :: descr   => s_jac_solver_descr
+    procedure, pass(sv) :: default => s_jac_solver_default
+    procedure, pass(sv) :: sizeof  => s_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => s_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => s_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => s_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => s_jac_solver_get_id
+    procedure, nopass   :: is_iterative => s_jac_solver_is_iterative
+  end type amg_s_jac_solver_type
+
+  type, extends(amg_s_jac_solver_type) :: amg_s_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_s_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => s_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => s_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => s_l1_jac_solver_get_id
+  end type amg_s_l1_jac_solver_type
+
+
+  private :: s_jac_solver_bld, s_jac_solver_apply, &
+       &  s_jac_solver_free,   &
+       &  s_jac_solver_descr,  s_jac_solver_sizeof, &
+       &  s_jac_solver_default, s_jac_solver_dmp, &
+       &  s_jac_solver_apply_vect, s_jac_solver_get_nzeros, &
+       &  s_jac_solver_get_fmt, s_jac_solver_check,&
+       &  s_jac_solver_is_iterative, &
+       &  s_jac_solver_get_id, s_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_s_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      type(psb_s_vect_type),intent(inout)         :: x
+      type(psb_s_vect_type),intent(inout)         :: y
+      real(psb_spk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      real(psb_spk_),target, intent(inout)         :: work(:)
+      type(psb_s_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_s_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_s_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      real(psb_spk_),intent(inout)         :: x(:)
+      real(psb_spk_),intent(inout)         :: y(:)
+      real(psb_spk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      real(psb_spk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      real(psb_spk_),intent(inout), optional :: initu(:)
+    end subroutine amg_s_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_s_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_sspmat_type), intent(in), target, optional :: b
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_s_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_l1_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_s_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_sspmat_type), intent(in), target, optional :: b
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_s_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_s_jac_solver_type, psb_spk_, &
+           & psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_s_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_s_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_s_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_s_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_s_jac_solver_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_s_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_s_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_s_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_base_solver_type, amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout)               :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_s_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_s_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+!!$           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+!!$           & amg_s_base_solver_type, amg_s_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_s_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_s_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_s_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_base_solver_type, amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      class(amg_s_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_s_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_s_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
+           & amg_s_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_s_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_s_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine s_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine s_jac_solver_default
+
+  subroutine s_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='s_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine s_jac_solver_check
+
+  subroutine s_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_cseti
+
+  subroutine s_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='s_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_csetc
+  
+  subroutine s_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_spk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_csetr
+
+  subroutine s_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='s_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_free
+
+  subroutine s_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_s_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_jac_solver_descr
+
+  function s_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function s_jac_solver_get_nzeros
+
+  function s_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_s_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function s_jac_solver_sizeof
+
+  function s_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function s_jac_solver_get_fmt
+
+  function s_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function s_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function s_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function s_jac_solver_is_iterative
+    
+  function s_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function s_jac_solver_get_wrksize
+
+  subroutine s_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_s_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_l1_jac_solver_descr
+
+  function s_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function s_l1_jac_solver_get_fmt
+
+  function s_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function s_l1_jac_solver_get_id
+  
+end module amg_s_jac_solver

amgprec/amg_s_krm_solver.f90

@@ -1,11 +1,14 @@
-!
-!
+!  
+!   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!
-!    (C) Copyright 2020
-!
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !        Salvatore Filippone
 !        Pasqua D'Ambra
 !        Fabio Durastante
@@ -52,14 +55,14 @@
 !      2. Redistributions in binary form must reproduce the above copyright
 !         notice, this list of conditions, and the following disclaimer in the
 !         documentation and/or other materials provided with the distribution.
-!      3. The name of the MLD2P4 group or the names of its contributors may
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
 !
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
 !    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 !    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 !    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
@@ -70,16 +73,16 @@
 !
 !
 !
-! File: amg_s_rkr_solver_mod.f90
+! File: amg_s_krm_solver_mod.f90
 !
-! Module: amg_s_rkr_solver_mod
+! Module: amg_s_krm_solver_mod
 !
-module amg_s_rkr_solver
+module amg_s_krm_solver
 
   use amg_s_base_solver_mod
   use amg_s_prec_type
 
-  type, extends(amg_s_base_solver_type) :: amg_s_rkr_solver_type
+  type, extends(amg_s_base_solver_type) :: amg_s_krm_solver_type
     !
     logical               :: global
     character(len=16)     :: method, kprec, sub_solve
@@ -94,46 +97,46 @@ module amg_s_rkr_solver
   contains
     !
     !
-    procedure, pass(sv) :: dump    => s_rkr_solver_dmp
-    procedure, pass(sv) :: check   => s_rkr_solver_check
-    procedure, pass(sv) :: clone   => s_rkr_solver_clone
-    procedure, pass(sv) :: clone_settings   => s_rkr_solver_clone_settings
-    procedure, pass(sv) :: cnv     => s_rkr_solver_cnv
-    procedure, pass(sv) :: apply_v => amg_s_rkr_solver_apply_vect
-    procedure, pass(sv) :: apply_a => amg_s_rkr_solver_apply
-    procedure, pass(sv) :: clear_data  => s_rkr_solver_clear_data
-    procedure, pass(sv) :: free    => s_rkr_solver_free
-    procedure, pass(sv) :: cseti   => s_rkr_solver_cseti
-    procedure, pass(sv) :: csetc   => s_rkr_solver_csetc
-    procedure, pass(sv) :: csetr   => s_rkr_solver_csetr
-    procedure, pass(sv) :: sizeof  => s_rkr_solver_sizeof
-    procedure, pass(sv) :: get_nzeros => s_rkr_solver_get_nzeros
-    !procedure, nopass   :: get_id  => s_rkr_solver_get_id
-    procedure, pass(sv) :: is_global => s_rkr_solver_is_global
-    procedure, nopass   :: is_iterative => s_rkr_solver_is_iterative
+    procedure, pass(sv) :: dump    => s_krm_solver_dmp
+    procedure, pass(sv) :: check   => s_krm_solver_check
+    procedure, pass(sv) :: clone   => s_krm_solver_clone
+    procedure, pass(sv) :: clone_settings   => s_krm_solver_clone_settings
+    procedure, pass(sv) :: cnv     => s_krm_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_s_krm_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_s_krm_solver_apply
+    procedure, pass(sv) :: clear_data  => s_krm_solver_clear_data
+    procedure, pass(sv) :: free    => s_krm_solver_free
+    procedure, pass(sv) :: cseti   => s_krm_solver_cseti
+    procedure, pass(sv) :: csetc   => s_krm_solver_csetc
+    procedure, pass(sv) :: csetr   => s_krm_solver_csetr
+    procedure, pass(sv) :: sizeof  => s_krm_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => s_krm_solver_get_nzeros
+    !procedure, nopass   :: get_id  => s_krm_solver_get_id
+    procedure, pass(sv) :: is_global => s_krm_solver_is_global
+    procedure, nopass   :: is_iterative => s_krm_solver_is_iterative
 
 
     !
     ! These methods are specific for the new solver type
     ! and therefore need to be overridden
     !
-    procedure, pass(sv) :: descr   => s_rkr_solver_descr
-    procedure, pass(sv) :: default => s_rkr_solver_default
-    procedure, pass(sv) :: build   => amg_s_rkr_solver_bld
-    procedure, nopass   :: get_fmt => s_rkr_solver_get_fmt
-  end type amg_s_rkr_solver_type
+    procedure, pass(sv) :: descr   => s_krm_solver_descr
+    procedure, pass(sv) :: default => s_krm_solver_default
+    procedure, pass(sv) :: build   => amg_s_krm_solver_bld
+    procedure, nopass   :: get_fmt => s_krm_solver_get_fmt
+  end type amg_s_krm_solver_type
 
 
-  private ::  s_rkr_solver_get_fmt, s_rkr_solver_descr, s_rkr_solver_default
+  private ::  s_krm_solver_get_fmt, s_krm_solver_descr, s_krm_solver_default
 
   interface
-    subroutine amg_s_rkr_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_s_krm_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
          & trans,work,wv,info,init,initu)
-      import :: psb_desc_type, amg_s_rkr_solver_type, psb_s_vect_type, psb_spk_, &
+      import :: psb_desc_type, amg_s_krm_solver_type, psb_s_vect_type, psb_spk_, &
            & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)             :: desc_data
-      class(amg_s_rkr_solver_type), intent(inout) :: sv
+      class(amg_s_krm_solver_type), intent(inout) :: sv
       type(psb_s_vect_type),intent(inout)         :: x
       type(psb_s_vect_type),intent(inout)         :: y
       real(psb_spk_),intent(in)                    :: alpha,beta
@@ -143,17 +146,17 @@ module amg_s_rkr_solver
       integer(psb_ipk_), intent(out)                :: info
       character, intent(in), optional                :: init
       type(psb_s_vect_type),intent(inout), optional   :: initu
-    end subroutine amg_s_rkr_solver_apply_vect
+    end subroutine amg_s_krm_solver_apply_vect
   end interface
 
   interface
-    subroutine amg_s_rkr_solver_apply(alpha,sv,x,beta,y,desc_data,&
+    subroutine amg_s_krm_solver_apply(alpha,sv,x,beta,y,desc_data,&
          & trans,work,info,init,initu)
-      import :: psb_desc_type, amg_s_rkr_solver_type, psb_s_vect_type, psb_spk_, &
+      import :: psb_desc_type, amg_s_krm_solver_type, psb_s_vect_type, psb_spk_, &
            & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
       implicit none
       type(psb_desc_type), intent(in)      :: desc_data
-      class(amg_s_rkr_solver_type), intent(inout) :: sv
+      class(amg_s_krm_solver_type), intent(inout) :: sv
       real(psb_spk_),intent(inout)         :: x(:)
       real(psb_spk_),intent(inout)         :: y(:)
       real(psb_spk_),intent(in)            :: alpha,beta
@@ -162,24 +165,24 @@ module amg_s_rkr_solver
       integer(psb_ipk_), intent(out)        :: info
       character, intent(in), optional       :: init
       real(psb_spk_),intent(inout), optional :: initu(:)
-    end subroutine amg_s_rkr_solver_apply
+    end subroutine amg_s_krm_solver_apply
   end interface
 
   interface
-    subroutine amg_s_rkr_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
-      import :: psb_desc_type, amg_s_rkr_solver_type, psb_s_vect_type, psb_spk_, &
+    subroutine amg_s_krm_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_krm_solver_type, psb_s_vect_type, psb_spk_, &
            & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
            & psb_ipk_, psb_i_base_vect_type
       implicit none
       type(psb_sspmat_type), intent(in), target           :: a
       Type(psb_desc_type), Intent(inout)                  :: desc_a
-      class(amg_s_rkr_solver_type), intent(inout)         :: sv
+      class(amg_s_krm_solver_type), intent(inout)         :: sv
       integer(psb_ipk_), intent(out)                      :: info
       type(psb_sspmat_type), intent(in), target, optional :: b
       class(psb_s_base_sparse_mat), intent(in), optional  :: amold
       class(psb_s_base_vect_type), intent(in), optional   :: vmold
       class(psb_i_base_vect_type), intent(in), optional   :: imold
-    end subroutine amg_s_rkr_solver_bld
+    end subroutine amg_s_krm_solver_bld
   end interface
 
 
@@ -187,12 +190,12 @@ contains
 
   !
   !
-  subroutine s_rkr_solver_default(sv)
+  subroutine s_krm_solver_default(sv)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
 
     sv%method     = 'bicgstab'
     sv%kprec      = 'bjac'
@@ -207,42 +210,42 @@ contains
     sv%global = .false.
 
     return
-  end subroutine s_rkr_solver_default
+  end subroutine s_krm_solver_default
 
-  function s_rkr_solver_get_nzeros(sv) result(val)
+  function s_krm_solver_get_nzeros(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(in) :: sv
+    class(amg_s_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%get_nzeros()
 
     return
-  end function s_rkr_solver_get_nzeros
+  end function s_krm_solver_get_nzeros
 
-  function s_rkr_solver_sizeof(sv) result(val)
+  function s_krm_solver_sizeof(sv) result(val)
 
     implicit none
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(in) :: sv
+    class(amg_s_krm_solver_type), intent(in) :: sv
     integer(psb_epk_) :: val
 
     val = sv%prec%sizeof() + sv%desc_local%sizeof() + sv%a_local%sizeof()
 
     return
-  end function s_rkr_solver_sizeof
+  end function s_krm_solver_sizeof
 
 
-  subroutine s_rkr_solver_check(sv,info)
+  subroutine s_krm_solver_check(sv,info)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_) :: err_act
-    character(len=20) :: name='s_rkr_solver_check'
+    character(len=20) :: name='s_krm_solver_check'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -256,36 +259,36 @@ contains
 9999 call psb_error_handler(err_act)
     return
 
-  end subroutine s_rkr_solver_check
+  end subroutine s_krm_solver_check
 
-  subroutine s_rkr_solver_cseti(sv,what,val,info,idx)
+  subroutine s_krm_solver_cseti(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     integer(psb_ipk_), intent(in)                 :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='s_rkr_solver_cseti'
+    character(len=20)  :: name='s_krm_solver_cseti'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
     select case(psb_toupper(trim(what)))
-    case('RKR_IRST')
+    case('KRM_IRST')
       sv%irst = val
-    case('RKR_ISTOPC')
+    case('KRM_ISTOPC')
       sv%istopc = val
-    case('RKR_ITMAX')
+    case('KRM_ITMAX')
       sv%itmax = val
-    case('RKR_ITRACE')
+    case('KRM_ITRACE')
       sv%itrace = val
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%i_sub_solve = val
-    case('RKR_FILLIN')
+    case('KRM_FILLIN')
       sv%fillin = val
     case default
       call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
@@ -296,33 +299,33 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine s_rkr_solver_cseti
+  end subroutine s_krm_solver_cseti
 
-  subroutine s_rkr_solver_csetc(sv,what,val,info,idx)
+  subroutine s_krm_solver_csetc(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     character(len=*), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act, ival
-    character(len=20)  :: name='s_rkr_solver_csetc'
+    character(len=20)  :: name='s_krm_solver_csetc'
 
     info = psb_success_
     call psb_erractionsave(err_act)
 
 
     select case(psb_toupper(trim(what)))
-    case('RKR_METHOD')
+    case('KRM_METHOD')
       sv%method = psb_toupper(trim(val))
-    case('RKR_KPREC')
+    case('KRM_KPREC')
       sv%kprec = psb_toupper(trim(val))
-    case('RKR_SUB_SOLVE')
+    case('KRM_SUB_SOLVE')
       sv%sub_solve = psb_toupper(trim(val))
-    case('RKR_GLOBAL')
+    case('KRM_GLOBAL')
       select case(psb_toupper(trim(val)))
       case('LOCAL','FALSE')
         sv%global = .false.
@@ -345,26 +348,26 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine s_rkr_solver_csetc
+  end subroutine s_krm_solver_csetc
 
-  subroutine s_rkr_solver_csetr(sv,what,val,info,idx)
+  subroutine s_krm_solver_csetr(sv,what,val,info,idx)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     character(len=*), intent(in)                  :: what
     real(psb_spk_), intent(in)                  :: val
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_), intent(in), optional       :: idx
     integer(psb_ipk_)  :: err_act
-    character(len=20)  :: name='s_rkr_solver_csetr'
+    character(len=20)  :: name='s_krm_solver_csetr'
 
     call psb_erractionsave(err_act)
     info = psb_success_
 
     select case(psb_toupper(what))
-    case('RKR_EPS')
+    case('KRM_EPS')
       sv%eps = val
     case default
       call sv%amg_s_base_solver_type%set(what,val,info,idx=idx)
@@ -375,18 +378,18 @@ contains
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine s_rkr_solver_csetr
+  end subroutine s_krm_solver_csetr
 
-  subroutine s_rkr_solver_clear_data(sv,info)
+  subroutine s_krm_solver_clear_data(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_) :: err_act
     type(psb_ctxt_type)  :: l_ctxt
-    character(len=20)  :: name='s_rkr_solver_free'
+    character(len=20)  :: name='s_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -403,19 +406,19 @@ contains
     nullify(sv%a)
     call psb_erractionrestore(err_act)
     return
-  end subroutine s_rkr_solver_clear_data
+  end subroutine s_krm_solver_clear_data
 
 
-  subroutine s_rkr_solver_free(sv,info)
+  subroutine s_krm_solver_free(sv,info)
     use psb_base_mod, only : psb_exit
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout) :: sv
+    class(amg_s_krm_solver_type), intent(inout) :: sv
     integer(psb_ipk_), intent(out)                :: info
     integer(psb_ipk_)  :: err_act
     type(psb_ctxt_type) :: l_ctxt
-    character(len=20)  :: name='s_rkr_solver_free'
+    character(len=20)  :: name='s_krm_solver_free'
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,29 +427,31 @@ contains
 
     call psb_erractionrestore(err_act)
     return
-  end subroutine s_rkr_solver_free
+  end subroutine s_krm_solver_free
 
-  function s_rkr_solver_get_fmt() result(val)
+  function s_krm_solver_get_fmt() result(val)
     implicit none
     character(len=32)  :: val
 
-    val = "RKR solver"
-  end function s_rkr_solver_get_fmt
+    val = "KRM solver"
+  end function s_krm_solver_get_fmt
 
-  subroutine s_rkr_solver_descr(sv,info,iout,coarse)
+  subroutine s_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(in) :: sv
+    class(amg_s_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
-    character(len=20), parameter :: name='amg_s_rkr_solver_descr'
+    character(len=20), parameter :: name='amg_s_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,34 +460,33 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return
 
 9999 call psb_error_handler(err_act)
     return
-  end subroutine s_rkr_solver_descr
+  end subroutine s_krm_solver_descr
 
-  subroutine s_rkr_solver_cnv(sv,info,amold,vmold,imold)
+  subroutine s_krm_solver_cnv(sv,info,amold,vmold,imold)
     implicit none
-    class(amg_s_rkr_solver_type), intent(inout)         :: sv
+    class(amg_s_krm_solver_type), intent(inout)         :: sv
     integer(psb_ipk_), intent(out)                      :: info
     class(psb_s_base_sparse_mat), intent(in), optional  :: amold
     class(psb_s_base_vect_type), intent(in), optional   :: vmold
@@ -490,13 +494,13 @@ contains
 
     call sv%prec%cnv(info,amold=amold,vmold=vmold,imold=imold)
 
-  end subroutine s_rkr_solver_cnv
+  end subroutine s_krm_solver_cnv
 
-  subroutine s_rkr_solver_clone(sv,svout,info)
+  subroutine s_krm_solver_clone(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout)               :: sv
+    class(amg_s_krm_solver_type), intent(inout)               :: sv
     class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
@@ -505,7 +509,7 @@ contains
     call svout%free(info)
     allocate(svout,stat=info,mold=sv)
     select type(so=>svout)
-    class is(amg_s_rkr_solver_type)
+    class is(amg_s_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -524,21 +528,21 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine s_rkr_solver_clone
+  end subroutine s_krm_solver_clone
 
 
-  subroutine s_rkr_solver_clone_settings(sv,svout,info)
+  subroutine s_krm_solver_clone_settings(sv,svout,info)
     Implicit None
 
     ! Arguments
-    class(amg_s_rkr_solver_type), intent(inout)               :: sv
+    class(amg_s_krm_solver_type), intent(inout)               :: sv
     class(amg_s_base_solver_type), intent(inout) :: svout
     integer(psb_ipk_), intent(out)              :: info
 
     info = psb_success_
 
     select type(so=>svout)
-    class is(amg_s_rkr_solver_type)
+    class is(amg_s_krm_solver_type)
       so%method = sv%method
       so%kprec  = sv%kprec
       so%sub_solve = sv%sub_solve
@@ -554,11 +558,11 @@ contains
       info = psb_err_internal_error_
     end select
 
-  end subroutine s_rkr_solver_clone_settings
+  end subroutine s_krm_solver_clone_settings
 
-  subroutine s_rkr_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+  subroutine s_krm_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
     implicit none
-    class(amg_s_rkr_solver_type), intent(in) :: sv
+    class(amg_s_krm_solver_type), intent(in) :: sv
     type(psb_desc_type), intent(in)             :: desc
     integer(psb_ipk_), intent(in)              :: level
     integer(psb_ipk_), intent(out)             :: info
@@ -568,23 +572,23 @@ contains
 
     call sv%prec%dump(info,prefix=prefix,head=head)
 
-  end subroutine s_rkr_solver_dmp
+  end subroutine s_krm_solver_dmp
   !
-  ! Notify whether RKR is used as a global solver
+  ! Notify whether KRM is used as a global solver
   !
-  function s_rkr_solver_is_global(sv) result(val)
+  function s_krm_solver_is_global(sv) result(val)
     implicit none
-    class(amg_s_rkr_solver_type), intent(in) :: sv
+    class(amg_s_krm_solver_type), intent(in) :: sv
     logical  :: val
 
     val = (sv%global)
-  end function s_rkr_solver_is_global
+  end function s_krm_solver_is_global
   !
-  function s_rkr_solver_is_iterative() result(val)
+  function s_krm_solver_is_iterative() result(val)
     implicit none
     logical  :: val
 
     val = .true.
-  end function s_rkr_solver_is_iterative
+  end function s_krm_solver_is_iterative
 
-end module amg_s_rkr_solver
+end module amg_s_krm_solver

amgprec/amg_s_mumps_solver.F90

@@ -3,9 +3,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -78,7 +78,8 @@ module amg_s_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine s_mumps_solver_finalize(sv)
 
 end subroutine s_mumps_solver_finalize
 
-subroutine s_mumps_solver_descr(sv,info,iout,coarse)
+subroutine s_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_s_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine s_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_s_onelev_mod.f90

@@ -1,15 +1,15 @@
-!  
-!   
+!
+!
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
-!    
-!    (C) Copyright 2020 
-!  
-!        Salvatore Filippone  
-!        Pasqua D'Ambra   
-!        Fabio Durastante        
-!   
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Fabio Durastante
+!
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
 !    are met:
@@ -21,7 +21,7 @@
 !      3. The name of the AMG4PSBLAS group or the names of its contributors may
 !         not be used to endorse or promote products derived from this
 !         software without specific written permission.
-!   
+!
 !    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 !    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 !    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
@@ -33,22 +33,22 @@
 !    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 !    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 !    POSSIBILITY OF SUCH DAMAGE.
-!   
-!  
+!
+!
 ! File: amg_s_onelev_mod.f90
 !
 ! Module: amg_s_onelev_mod
 !
-!  This module defines: 
+!  This module defines:
 !  - the amg_s_onelev_type data structure containing one level
 !    of a multilevel  preconditioner and related
 !    data structures;
 !
 !  It contains routines for
-!  - Building and applying; 
+!  - Building and applying;
 !  - checking if the preconditioner is correctly defined;
 !  - printing a	description of the preconditioner;
-!  - deallocating the preconditioner data structure.  
+!  - deallocating the preconditioner data structure.
 !
 
 module amg_s_onelev_mod
@@ -56,6 +56,8 @@ module amg_s_onelev_mod
   use amg_base_prec_type
   use amg_s_base_smoother_mod
   use amg_s_dec_aggregator_mod
+  use amg_s_parmatch_aggregator_mod
+
   use psb_base_mod, only : psb_sspmat_type, psb_s_vect_type, &
        & psb_s_base_vect_type, psb_lsspmat_type,  psb_slinmap_type, psb_spk_, &
        & psb_ipk_, psb_epk_, psb_lpk_, psb_desc_type, psb_i_base_vect_type, &
@@ -73,16 +75,16 @@ module amg_s_onelev_mod
   !    class(amg_s_base_smoother_type), pointer       :: sm2 => null()
   !    class(amg_smlprec_wrk_type), allocatable       :: wrk
   !    class(amg_s_base_aggregator_type), allocatable :: aggr
-  !    type(amg_sml_parms)             :: parms 
+  !    type(amg_sml_parms)             :: parms
   !    type(psb_sspmat_type)           :: ac
   !    type(psb_sesc_type)             :: desc_ac
-  !    type(psb_sspmat_type), pointer  :: base_a    => null() 
-  !    type(psb_desc_type), pointer    :: base_desc => null() 
+  !    type(psb_sspmat_type), pointer  :: base_a    => null()
+  !    type(psb_desc_type), pointer    :: base_desc => null()
   !    type(psb_slinmap_type)          :: map
   !  end type amg_sonelev_type
   !
   !  Note that s denotes the kind of the real data type to be chosen
-  !  according to single/double precision version of MLD2P4.
+  !  according to single/double precision version of AMG4PSBLAS.
   !
   !   sm,sm2a      -  class(amg_s_base_smoother_type), allocatable
   !                   The current level pre- and post-smooother.
@@ -93,7 +95,7 @@ module amg_s_onelev_mod
   !                   Workspace for application of preconditioner; may be
   !                   pre-allocated to save time in the application within a
   !                   Krylov solver.
-  !   aggr         -  class(amg_s_base_aggregator_type), allocatable 
+  !   aggr         -  class(amg_s_base_aggregator_type), allocatable
   !                   The aggregator object: holds the algorithmic choices and
   !                   (possibly) additional data for building the aggregation.
   !   parms        -  type(amg_sml_parms)
@@ -104,7 +106,7 @@ module amg_s_onelev_mod
   !                   The communication descriptor associated to the matrix
   !                   stored in ac.
   !   base_a       -  type(psb_sspmat_type), pointer.
-  !                   Pointer (really a pointer!) to the local part of the current 
+  !                   Pointer (really a pointer!) to the local part of the current
   !                   matrix (so we have a unified treatment of residuals).
   !                   We need this to avoid passing explicitly the current matrix
   !                   to the routine which applies the preconditioner.
@@ -115,13 +117,13 @@ module amg_s_onelev_mod
   !                   vector spaces associated to the index spaces of the previous
   !                   and current levels.
   !
-  !   Methods:  
+  !   Methods:
   !     Most methods follow the encapsulation hierarchy: they take whatever action
   !     is appropriate for the current object, then call the corresponding method for
   !     the contained object.
   !     As an example: the descr() method prints out a description of the
   !     level. It starts by invoking the descr() method of the parms object,
-  !     then calls the descr() method of the smoother object. 
+  !     then calls the descr() method of the smoother object.
   !
   !    descr      -   Prints a description of the object.
   !    default    -   Set default values
@@ -130,14 +132,14 @@ module amg_s_onelev_mod
   !                   it is passed to the smoother object for further processing.
   !    check        -  Sanity checks.
   !    sizeof       -  Total memory occupation in bytes
-  !    get_nzeros   -  Number of nonzeros 
+  !    get_nzeros   -  Number of nonzeros
   !    get_wrksz    -  How many workspace vector does apply_vect need
   !    allocate_wrk -  Allocate auxiliary workspace
   !    free_wrk     -  Free     auxiliary workspace
   !    bld_tprol    -  Invoke the aggr method to build the tentative prolongator
-  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix. 
+  !    mat_asb      -  Build the final (possibly smoothed) prolongator and coarse matrix.
+  !
   !
-  !  
   type amg_smlprec_wrk_type
     real(psb_spk_), allocatable  :: tx(:), ty(:), x2l(:), y2l(:)
     type(psb_s_vect_type)  :: vtx, vty, vx2l, vy2l
@@ -148,10 +150,10 @@ module amg_s_onelev_mod
     procedure, pass(wk) :: clone      => s_wrk_clone
     procedure, pass(wk) :: move_alloc => s_wrk_move_alloc
     procedure, pass(wk) :: cnv        => s_wrk_cnv
-    procedure, pass(wk) :: sizeof     => s_wrk_sizeof    
+    procedure, pass(wk) :: sizeof     => s_wrk_sizeof
   end type amg_smlprec_wrk_type
   private :: s_wrk_alloc, s_wrk_free, &
-       & s_wrk_clone, s_wrk_move_alloc, s_wrk_cnv, s_wrk_sizeof    
+       & s_wrk_clone, s_wrk_move_alloc, s_wrk_cnv, s_wrk_sizeof
 
   type amg_s_remap_data_type
     type(psb_sspmat_type)          :: ac_pre_remap
@@ -161,19 +163,19 @@ module amg_s_onelev_mod
   contains
     procedure, pass(rmp) :: clone   => s_remap_data_clone
   end type amg_s_remap_data_type
-  
+
   type amg_s_onelev_type
     class(amg_s_base_smoother_type), allocatable   :: sm, sm2a
     class(amg_s_base_smoother_type), pointer       :: sm2 => null()
     class(amg_smlprec_wrk_type), allocatable       :: wrk
     class(amg_s_base_aggregator_type), allocatable :: aggr
-    type(amg_sml_parms)              :: parms 
+    type(amg_sml_parms)              :: parms
     type(psb_sspmat_type)            :: ac
     integer(psb_ipk_)                :: ac_nz_loc
     integer(psb_lpk_)                :: ac_nz_tot
     type(psb_desc_type)              :: desc_ac
-    type(psb_sspmat_type), pointer   :: base_a    => null() 
-    type(psb_desc_type), pointer     :: base_desc => null() 
+    type(psb_sspmat_type), pointer   :: base_a    => null()
+    type(psb_desc_type), pointer     :: base_desc => null()
     type(psb_lsspmat_type)           :: tprol
     type(psb_slinmap_type)           :: linmap
     type(amg_s_remap_data_type)      :: remap_data
@@ -186,8 +188,10 @@ module amg_s_onelev_mod
     procedure, pass(lv) :: clone   => s_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_s_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_s_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_s_base_onelev_memory_use
     procedure, pass(lv) :: default => s_base_onelev_default
     procedure, pass(lv) :: free    => amg_s_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_s_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => s_base_onelev_nullify
     procedure, pass(lv) :: check => amg_s_base_onelev_check
     procedure, pass(lv) :: dump  => amg_s_base_onelev_dump
@@ -197,7 +201,7 @@ module amg_s_onelev_mod
     procedure, pass(lv) :: setsm => amg_s_base_onelev_setsm
     procedure, pass(lv) :: setsv => amg_s_base_onelev_setsv
     procedure, pass(lv) :: setag => amg_s_base_onelev_setag
-    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag 
+    generic, public     :: set   => cseti, csetr, csetc, setsm, setsv, setag
     procedure, pass(lv) :: sizeof => s_base_onelev_sizeof
     procedure, pass(lv) :: get_nzeros => s_base_onelev_get_nzeros
     procedure, pass(lv) :: get_wrksz => s_base_onelev_get_wrksize
@@ -205,8 +209,8 @@ module amg_s_onelev_mod
     procedure, pass(lv) :: free_wrk       => s_base_onelev_free_wrk
     procedure, nopass   :: stringval => amg_stringval
     procedure, pass(lv) :: move_alloc => s_base_onelev_move_alloc
-    
-    
+
+
     procedure, pass(lv) :: map_rstr_a => amg_s_base_onelev_map_rstr_a
     procedure, pass(lv) :: map_prol_a => amg_s_base_onelev_map_prol_a
     procedure, pass(lv) :: map_rstr_v => amg_s_base_onelev_map_rstr_v
@@ -226,11 +230,11 @@ module amg_s_onelev_mod
        & s_base_onelev_get_wrksize, s_base_onelev_allocate_wrk, &
        & s_base_onelev_free_wrk
 
-  interface 
+  interface
     subroutine amg_s_base_onelev_mat_asb(lv,a,desc_a,ilaggr,nlaggr,t_prol,info)
       import :: psb_sspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lsspmat_type, psb_lpk_
       import :: amg_s_onelev_type
-      implicit none 
+      implicit none
       class(amg_s_onelev_type), intent(inout), target :: lv
       type(psb_sspmat_type), intent(in) :: a
       type(psb_desc_type), intent(inout)  :: desc_a
@@ -255,141 +259,172 @@ module amg_s_onelev_mod
     end subroutine amg_s_base_onelev_build
   end interface
 
-  interface 
-    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout)
+  interface
+    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_s_onelev_type), intent(in) :: lv
-      integer(psb_ipk_), intent(in)                 :: il,nl,ilmin
-      integer(psb_ipk_), intent(out)                :: info
-      integer(psb_ipk_), intent(in), optional       :: iout
+      class(amg_s_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_base_onelev_descr
   end interface
 
-  interface 
+  interface
+    subroutine amg_s_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_s_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_s_base_onelev_memory_use
+  end interface
+
+  interface
     subroutine amg_s_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_s_onelev_type, psb_s_base_vect_type, psb_spk_, &
            & psb_s_base_sparse_mat, psb_ipk_, psb_i_base_vect_type
       ! Arguments
-      class(amg_s_onelev_type), intent(inout)            :: lv 
+      class(amg_s_onelev_type), intent(inout)            :: lv
       integer(psb_ipk_), intent(out)                     :: info
       class(psb_s_base_sparse_mat), intent(in), optional :: amold
       class(psb_s_base_vect_type), intent(in), optional  :: vmold
       class(psb_i_base_vect_type), intent(in), optional  :: imold
     end subroutine amg_s_base_onelev_cnv
   end interface
-   
-interface 
+
+  interface
     subroutine amg_s_base_onelev_free(lv,info)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
-      
+      implicit none
+
       class(amg_s_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)                :: info
     end subroutine amg_s_base_onelev_free
   end interface
-  
-  interface 
+
+  interface
+    subroutine amg_s_base_onelev_free_smoothers(lv,info)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_s_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_base_onelev_free_smoothers
+  end interface
+
+  interface
     subroutine amg_s_base_onelev_check(lv,info)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_s_onelev_type), intent(inout) :: lv 
+      class(amg_s_onelev_type), intent(inout) :: lv
       integer(psb_ipk_), intent(out)            :: info
     end subroutine amg_s_base_onelev_check
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_setsm(lv,val,info,pos)
       import :: psb_spk_, amg_s_onelev_type, amg_s_base_smoother_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_s_onelev_type), target, intent(inout) :: lv 
+      class(amg_s_onelev_type), target, intent(inout) :: lv
       class(amg_s_base_smoother_type), intent(in)     :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_s_base_onelev_setsm
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_setsv(lv,val,info,pos)
       import :: psb_spk_, amg_s_onelev_type, amg_s_base_solver_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_s_onelev_type), target, intent(inout) :: lv 
+      class(amg_s_onelev_type), target, intent(inout) :: lv
       class(amg_s_base_solver_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_s_base_onelev_setsv
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_setag(lv,val,info,pos)
       import :: psb_spk_, amg_s_onelev_type, amg_s_base_aggregator_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_s_onelev_type), target, intent(inout) :: lv 
+      class(amg_s_onelev_type), target, intent(inout) :: lv
       class(amg_s_base_aggregator_type), intent(in)       :: val
       integer(psb_ipk_), intent(out)                  :: info
       character(len=*), optional, intent(in)          :: pos
     end subroutine amg_s_base_onelev_setag
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_cseti(lv,what,val,info,pos,idx)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
+
       ! Arguments
-      class(amg_s_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_s_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       integer(psb_ipk_), intent(in)             :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_s_base_onelev_cseti
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_csetc(lv,what,val,info,pos,idx)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
       ! Arguments
-      class(amg_s_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+      class(amg_s_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       character(len=*), intent(in)              :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
     integer(psb_ipk_), intent(in), optional       :: idx
     end subroutine amg_s_base_onelev_csetc
   end interface
-  
-  interface 
+
+  interface
     subroutine amg_s_base_onelev_csetr(lv,what,val,info,pos,idx)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
       Implicit None
-      
-      class(amg_s_onelev_type), intent(inout) :: lv 
-      character(len=*), intent(in)              :: what 
+
+      class(amg_s_onelev_type), intent(inout) :: lv
+      character(len=*), intent(in)              :: what
       real(psb_spk_), intent(in)                 :: val
       integer(psb_ipk_), intent(out)            :: info
       character(len=*), optional, intent(in)      :: pos
@@ -397,13 +432,13 @@ interface
     end subroutine amg_s_base_onelev_csetr
   end interface
 
-  interface 
+  interface
     subroutine amg_s_base_onelev_dump(lv,level,info,prefix,head,ac,rp,smoother,&
          & solver,tprol,global_num)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
-      implicit none 
+      implicit none
       class(amg_s_onelev_type), intent(in) :: lv
       integer(psb_ipk_), intent(in)          :: level
       integer(psb_ipk_), intent(out)         :: info
@@ -435,7 +470,7 @@ interface
     end subroutine amg_s_base_onelev_map_rstr_v
   end interface
 
-  interface 
+  interface
     subroutine amg_s_base_onelev_map_prol_a(lv,alpha,v,beta,u,info,work)
       import
       implicit none
@@ -458,15 +493,15 @@ interface
       type(psb_s_vect_type), optional, target, intent(inout)  :: vtx,vty
     end subroutine amg_s_base_onelev_map_prol_v
   end interface
-  
+
 contains
   !
   ! Function returning the size of the amg_prec_type data structure
-  ! in bytes or in number of nonzeros of the operator(s) involved. 
+  ! in bytes or in number of nonzeros of the operator(s) involved.
   !
 
   function s_base_onelev_get_nzeros(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_s_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
@@ -478,16 +513,16 @@ contains
   end function s_base_onelev_get_nzeros
 
   function s_base_onelev_sizeof(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_s_onelev_type), intent(in) :: lv
     integer(psb_epk_) :: val
     integer(psb_ipk_)        :: i
-    
+
     val = psb_sizeof_ip+psb_sizeof_lp
     val = val + lv%desc_ac%sizeof()
     val = val + lv%ac%sizeof()
     val = val + lv%tprol%sizeof()
-    val = val + lv%linmap%sizeof() 
+    val = val + lv%linmap%sizeof()
     if (allocated(lv%sm))   val = val + lv%sm%sizeof()
     if (allocated(lv%sm2a)) val = val + lv%sm2a%sizeof()
     if (allocated(lv%aggr)) val = val + lv%aggr%sizeof()
@@ -496,19 +531,19 @@ contains
 
 
   subroutine s_base_onelev_nullify(lv)
-    implicit none 
+    implicit none
 
     class(amg_s_onelev_type), intent(inout) :: lv
 
-    nullify(lv%base_a) 
-    nullify(lv%base_desc) 
+    nullify(lv%base_a)
+    nullify(lv%base_desc)
     nullify(lv%sm2)
   end subroutine s_base_onelev_nullify
 
   !
-  ! Multilevel defaults: 
+  ! Multilevel defaults:
   !  multiplicative vs. additive ML framework;
-  !  Smoothed decoupled aggregation with zero threshold; 
+  !  Smoothed decoupled aggregation with zero threshold;
   !  distributed coarse matrix;
   !  damping omega  computed with the max-norm estimate of the
   !  dominant eigenvalue;
@@ -518,10 +553,10 @@ contains
   subroutine s_base_onelev_default(lv)
 
     Implicit None
- 
+
     ! Arguments
     class(amg_s_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_) :: info 
+    integer(psb_ipk_) :: info
 
     lv%parms%sweeps_pre      = 1
     lv%parms%sweeps_post     = 1
@@ -536,7 +571,7 @@ contains
     lv%parms%aggr_filter     = amg_no_filter_mat_
     lv%parms%aggr_omega_val  = szero
     lv%parms%aggr_thresh     = 0.01_psb_spk_
-    
+
     if (allocated(lv%sm)) call lv%sm%default()
     if (allocated(lv%sm2a)) then
       call lv%sm2a%default()
@@ -546,7 +581,7 @@ contains
     end if
     if (.not.allocated(lv%aggr)) allocate(amg_s_dec_aggregator_type :: lv%aggr,stat=info)
     if (allocated(lv%aggr)) call lv%aggr%default()
-    
+
     return
 
   end subroutine s_base_onelev_default
@@ -561,9 +596,9 @@ contains
     type(psb_lsspmat_type), intent(out)  :: t_prol
     type(amg_saggr_data), intent(in)    :: ag_data
     integer(psb_ipk_), intent(out)      :: info
-    
+
     call lv%aggr%bld_tprol(lv%parms,ag_data,a,desc_a,ilaggr,nlaggr,t_prol,info)
-    
+
   end subroutine s_base_onelev_bld_tprol
 
 
@@ -573,7 +608,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine s_base_onelev_update_aggr
 
 
@@ -582,33 +617,33 @@ contains
     Implicit None
 
     ! Arguments
-    class(amg_s_onelev_type), target, intent(inout) :: lv 
+    class(amg_s_onelev_type), target, intent(inout) :: lv
     class(amg_s_onelev_type), target, intent(inout) :: lvout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
 
     info = psb_success_
-    if (allocated(lv%sm)) then 
+    if (allocated(lv%sm)) then
       call lv%sm%clone(lvout%sm,info)
-    else 
-      if (allocated(lvout%sm)) then 
+    else
+      if (allocated(lvout%sm)) then
         call lvout%sm%free(info)
         if (info==psb_success_) deallocate(lvout%sm,stat=info)
       end if
     end if
-    if (allocated(lv%sm2a)) then 
+    if (allocated(lv%sm2a)) then
       call lv%sm%clone(lvout%sm2a,info)
       lvout%sm2 => lvout%sm2a
-    else 
-      if (allocated(lvout%sm2a)) then 
+    else
+      if (allocated(lvout%sm2a)) then
         call lvout%sm2a%free(info)
         if (info==psb_success_) deallocate(lvout%sm2a,stat=info)
       end if
       lvout%sm2 => lvout%sm
     end if
-    if (allocated(lv%aggr)) then 
+    if (allocated(lv%aggr)) then
       call  lv%aggr%clone(lvout%aggr,info)
     else
-      if (allocated(lvout%aggr)) then 
+      if (allocated(lvout%aggr)) then
         call lvout%aggr%free(info)
         if (info==psb_success_) deallocate(lvout%aggr,stat=info)
       end if
@@ -621,7 +656,7 @@ contains
     if (info == psb_success_) call lv%remap_data%clone(lvout%remap_data,info)
     lvout%base_a    => lv%base_a
     lvout%base_desc => lv%base_desc
-    
+
     return
 
   end subroutine s_base_onelev_clone
@@ -630,12 +665,12 @@ contains
     use psb_base_mod
     implicit none
     class(amg_s_onelev_type), target, intent(inout) :: lv, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     b%parms  = lv%parms
     b%szratio = lv%szratio
-    if (associated(lv%sm2,lv%sm2a)) then 
+    if (associated(lv%sm2,lv%sm2a)) then
       call move_alloc(lv%sm,b%sm)
       call move_alloc(lv%sm2a,b%sm2a)
       b%sm2 =>b%sm2a
@@ -646,18 +681,18 @@ contains
     end if
 
     call move_alloc(lv%aggr,b%aggr)
-    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info) 
-    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info) 
+    if (info == psb_success_) call psb_move_alloc(lv%ac,b%ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%tprol,b%tprol,info)
+    if (info == psb_success_) call psb_move_alloc(lv%desc_ac,b%desc_ac,info)
+    if (info == psb_success_) call psb_move_alloc(lv%linmap,b%linmap,info)
     b%base_a    => lv%base_a
     b%base_desc => lv%base_desc
-    
+
   end subroutine s_base_onelev_move_alloc
 
-  
+
   function s_base_onelev_get_wrksize(lv) result(val)
-    implicit none 
+    implicit none
     class(amg_s_onelev_type), intent(inout) :: lv
     integer(psb_ipk_)  :: val
 
@@ -678,26 +713,26 @@ contains
     select case(lv%parms%ml_cycle)
     case(amg_add_ml_,amg_mult_ml_,amg_vcycle_ml_, amg_wcycle_ml_)
       ! We're good
-      
+
     case(amg_kcycle_ml_, amg_kcyclesym_ml_)
       !
       ! We need 7 in inneritkcycle.
-      !  Can we reuse vtx? 
-      ! 
+      !  Can we reuse vtx?
+      !
       val = val + 7
-      
+
     case default
       ! Need a better error signaling ?
       val = -1
     end select
-    
+
   end function s_base_onelev_get_wrksize
 
   subroutine s_base_onelev_allocate_wrk(lv,info,vmold)
     use psb_base_mod
     implicit none
     class(amg_s_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     class(psb_s_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: nwv, i
@@ -710,22 +745,22 @@ contains
         !  Need to fix this, we need two different allocations
         !
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold,&
-             & desc2=lv%remap_data%desc_ac_pre_remap)      
+             & desc2=lv%remap_data%desc_ac_pre_remap)
       else
         call lv%wrk%alloc(nwv,lv%base_desc,info,vmold=vmold)
       end if
     end if
-    
+
   end subroutine s_base_onelev_allocate_wrk
 
-  
+
   subroutine s_base_onelev_free_wrk(lv,info)
     use psb_base_mod
     implicit none
     class(amg_s_onelev_type), target, intent(inout) :: lv
-    integer(psb_ipk_), intent(out) :: info 
+    integer(psb_ipk_), intent(out) :: info
     !
-    integer(psb_ipk_) :: nwv,i 
+    integer(psb_ipk_) :: nwv,i
     info = psb_success_
 
     if (allocated(lv%wrk)) then
@@ -733,17 +768,17 @@ contains
       if (info == 0) deallocate(lv%wrk,stat=info)
     end if
   end subroutine s_base_onelev_free_wrk
-  
+
   subroutine s_wrk_alloc(wk,nwv,desc,info,vmold, desc2)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_smlprec_wrk_type), target, intent(inout) :: wk
     integer(psb_ipk_), intent(in)                     :: nwv
     type(psb_desc_type), intent(in)                   :: desc
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_s_base_vect_type), intent(in), optional  :: vmold
     type(psb_desc_type), intent(in), optional          :: desc2
     !
@@ -807,14 +842,14 @@ contains
       end do
     end if
   end subroutine s_wrk_alloc
-    
+
   subroutine s_wrk_free(wk,info)
 
     Implicit None
 
     ! Arguments
     class(amg_smlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
@@ -835,7 +870,7 @@ contains
     end if
 
   end subroutine s_wrk_free
-    
+
   subroutine s_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -843,11 +878,11 @@ contains
     ! Arguments
     class(amg_smlprec_wrk_type), target, intent(inout) :: wk
     class(amg_smlprec_wrk_type), target, intent(inout) :: wkout
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
     info = psb_success_
-    
+
     call psb_safe_ab_cpy(wk%tx,wkout%tx,info)
     call psb_safe_ab_cpy(wk%ty,wkout%ty,info)
     call psb_safe_ab_cpy(wk%x2l,wkout%x2l,info)
@@ -869,12 +904,12 @@ contains
     return
 
   end subroutine s_wrk_clone
-  
+
   subroutine s_wrk_move_alloc(wk, b,info)
     implicit none
     class(amg_smlprec_wrk_type), target, intent(inout) :: wk, b
-    integer(psb_ipk_), intent(out) :: info 
-    
+    integer(psb_ipk_), intent(out) :: info
+
     call b%free(info)
     call move_alloc(wk%tx,b%tx)
     call move_alloc(wk%ty,b%ty)
@@ -887,17 +922,17 @@ contains
     call move_alloc(wk%vx2l%v,b%vx2l%v)
     call move_alloc(wk%vy2l%v,b%vy2l%v)
     call move_alloc(wk%wv,b%wv)
-        
+
   end subroutine s_wrk_move_alloc
 
   subroutine s_wrk_cnv(wk,info,vmold)
     use psb_base_mod
-    
+
     Implicit None
-    
+
     ! Arguments
     class(amg_smlprec_wrk_type), target, intent(inout) :: wk
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     class(psb_s_base_vect_type), intent(in), optional  :: vmold
     !
     integer(psb_ipk_) :: i
@@ -918,7 +953,7 @@ contains
 
   function s_wrk_sizeof(wk) result(val)
     use psb_realloc_mod
-    implicit none 
+    implicit none
     class(amg_smlprec_wrk_type), intent(in) :: wk
     integer(psb_epk_) :: val
     integer :: i
@@ -937,14 +972,14 @@ contains
       end do
     end if
   end function s_wrk_sizeof
- 
+
   subroutine s_remap_data_clone(rmp, remap_out, info)
     use psb_base_mod
-    implicit none 
+    implicit none
     ! Arguments
     class(amg_s_remap_data_type), target, intent(inout) :: rmp
     class(amg_s_remap_data_type), target, intent(inout) :: remap_out
-    integer(psb_ipk_), intent(out)                    :: info 
+    integer(psb_ipk_), intent(out)                    :: info
     !
     integer(psb_ipk_) :: i
 
@@ -955,7 +990,7 @@ contains
          & call rmp%desc_ac_pre_remap%clone(remap_out%desc_ac_pre_remap,info)
     remap_out%idest = rmp%idest
     call psb_safe_ab_cpy(rmp%isrc,remap_out%isrc,info)
-    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)    
+    call psb_safe_ab_cpy(rmp%nrsrc,remap_out%nrsrc,info)
   end subroutine s_remap_data_clone
-  
+
 end module amg_s_onelev_mod

amgprec/amg_s_parmatch_aggregator_mod.F90

@@ -0,0 +1,689 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Fabio Durastante
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+! moved here from amg4psblas-extension
+!
+!
+!                             AMG4PSBLAS  Extensions
+!
+!    (C) Copyright 2019
+!
+!                        Salvatore Filippone  Cranfield University
+!        Pasqua D'Ambra         IAC-CNR, Naples, IT
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+!
+!  The aggregator object hosts the aggregation method for building
+!  the multilevel hierarchy. This variant is based on the hybrid method
+!  presented in
+!
+!
+!   sm           -  class(amg_T_base_smoother_type), allocatable
+!                   The current level preconditioner (aka smoother).
+!   parms        -  type(amg_RTml_parms)
+!                   The parameters defining the multilevel strategy.
+!   ac           -  The local part of the current-level matrix, built by
+!                   coarsening the previous-level matrix.
+!   desc_ac      -  type(psb_desc_type).
+!                   The communication descriptor associated to the matrix
+!                   stored in ac.
+!   base_a       -  type(psb_Tspmat_type), pointer.
+!                   Pointer (really a pointer!) to the local part of the current
+!                   matrix (so we have a unified treatment of residuals).
+!                   We need this to avoid passing explicitly the current matrix
+!                   to the routine which applies the preconditioner.
+!   base_desc    -  type(psb_desc_type), pointer.
+!                   Pointer to the communication descriptor associated to the
+!                   matrix pointed by base_a.
+!   map          -  Stores the maps (restriction and prolongation) between the
+!                   vector spaces associated to the index spaces of the previous
+!                   and current levels.
+!
+!   Methods:
+!     Most methods follow the encapsulation hierarchy: they take whatever action
+!     is appropriate for the current object, then call the corresponding method for
+!     the contained object.
+!     As an example: the descr() method prints out a description of the
+!     level. It starts by invoking the descr() method of the parms object,
+!     then calls the descr() method of the smoother object.
+!
+!    descr      -   Prints a description of the object.
+!    default    -   Set default values
+!    dump       -   Dump to file object contents
+!    set        -   Sets various parameters; when a request is unknown
+!                   it is passed to the smoother object for further processing.
+!    check      -   Sanity checks.
+!    sizeof     -   Total memory occupation in bytes
+!    get_nzeros -   Number of nonzeros
+!
+!
+
+module amg_s_parmatch_aggregator_mod
+  use amg_s_base_aggregator_mod
+  use amg_s_matchboxp_mod
+#if defined(SERIAL_MPI)
+  type, extends(amg_s_base_aggregator_type) :: amg_s_parmatch_aggregator_type
+  end type amg_s_parmatch_aggregator_type
+#else 
+  type, extends(amg_s_base_aggregator_type) :: amg_s_parmatch_aggregator_type
+    integer(psb_ipk_) :: matching_alg
+    integer(psb_ipk_) :: n_sweeps   ! When n_sweeps >1 we need an auxiliary descriptor
+    integer(psb_ipk_) :: orig_aggr_size
+    integer(psb_ipk_) :: jacobi_sweeps
+    real(psb_spk_), allocatable :: w(:), w_nxt(:)
+    type(psb_sspmat_type), allocatable  :: prol, restr
+    type(psb_sspmat_type), allocatable  :: ac, base_a, rwa
+    type(psb_desc_type), allocatable    :: desc_ac, desc_ax, base_desc, rwdesc
+    logical           :: reproducible_matching = .false.
+    logical           :: need_symmetrize       = .false.
+    logical           :: unsmoothed_hierarchy  = .true.
+  contains
+    procedure, pass(ag) :: bld_tprol    => amg_s_parmatch_aggregator_build_tprol
+    procedure, pass(ag) :: mat_bld      => amg_s_parmatch_aggregator_mat_bld
+    procedure, pass(ag) :: mat_asb      => amg_s_parmatch_aggregator_mat_asb
+    procedure, pass(ag) :: inner_mat_asb      => amg_s_parmatch_aggregator_inner_mat_asb
+    procedure, pass(ag) :: bld_map      => amg_s_parmatch_aggregator_bld_map
+    procedure, pass(ag) :: csetc        => amg_s_parmatch_aggr_csetc
+    procedure, pass(ag) :: cseti        => amg_s_parmatch_aggr_cseti
+    procedure, pass(ag) :: default      => amg_s_parmatch_aggr_set_default
+    procedure, pass(ag) :: sizeof       => amg_s_parmatch_aggregator_sizeof
+    procedure, pass(ag) :: update_next  => amg_s_parmatch_aggregator_update_next
+    procedure, pass(ag) :: bld_wnxt     => amg_s_parmatch_bld_wnxt
+    procedure, pass(ag) :: bld_default_w    => amg_s_bld_default_w
+    procedure, pass(ag) :: set_c_default_w  => amg_s_set_prm_c_default_w
+    procedure, pass(ag) :: descr        => amg_s_parmatch_aggregator_descr
+    procedure, pass(ag) :: clone        => amg_s_parmatch_aggregator_clone
+    procedure, pass(ag) :: free         => amg_s_parmatch_aggregator_free
+    procedure, nopass   :: fmt          => amg_s_parmatch_aggregator_fmt
+    procedure, nopass   :: xt_desc      => amg_s_parmatch_aggregator_xt_desc
+  end type amg_s_parmatch_aggregator_type
+
+  interface
+    subroutine  amg_s_parmatch_aggregator_build_tprol(ag,parms,ag_data,&
+         & a,desc_a,ilaggr,nlaggr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_sml_parms), intent(inout)   :: parms
+      type(amg_saggr_data), intent(in)     :: ag_data
+      type(psb_sspmat_type), intent(inout) :: a
+      type(psb_desc_type), intent(inout)     :: desc_a
+      integer(psb_lpk_), allocatable, intent(out) :: ilaggr(:),nlaggr(:)
+      type(psb_lsspmat_type), intent(out)  :: t_prol
+      integer(psb_ipk_), intent(out)      :: info
+    end subroutine amg_s_parmatch_aggregator_build_tprol
+  end interface
+
+  interface
+    subroutine  amg_s_parmatch_aggregator_mat_bld(ag,parms,a,desc_a,ilaggr,nlaggr,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_sml_parms), intent(inout)   :: parms
+      type(psb_sspmat_type), intent(in)    :: a
+      type(psb_desc_type), intent(inout)   :: desc_a
+      integer(psb_lpk_), intent(inout)     :: ilaggr(:), nlaggr(:)
+      type(psb_lsspmat_type), intent(inout)   :: t_prol
+      type(psb_sspmat_type), intent(out)   ::  op_prol,ac,op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)       :: info
+    end subroutine amg_s_parmatch_aggregator_mat_bld
+  end interface
+
+  interface
+    subroutine  amg_s_parmatch_aggregator_mat_asb(ag,parms,a,desc_a,&
+         & ac,desc_ac, op_prol,op_restr,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_sml_parms), intent(inout)    :: parms
+      type(psb_sspmat_type), intent(in)     :: a
+      type(psb_desc_type), intent(inout)    :: desc_a
+      type(psb_sspmat_type), intent(inout) :: op_prol,ac,op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)        :: info
+    end subroutine amg_s_parmatch_aggregator_mat_asb
+  end interface
+
+
+  interface
+    subroutine  amg_s_parmatch_aggregator_inner_mat_asb(ag,parms,a,desc_a,&
+         & ac,desc_ac, op_prol,op_restr,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(amg_sml_parms), intent(inout)    :: parms
+      type(psb_sspmat_type), intent(in)     :: a
+      type(psb_desc_type), intent(in)       :: desc_a
+      type(psb_sspmat_type), intent(inout) :: op_prol,op_restr
+      type(psb_sspmat_type), intent(inout)  :: ac
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)        :: info
+    end subroutine amg_s_parmatch_aggregator_inner_mat_asb
+  end interface
+
+
+  interface
+    subroutine amg_s_parmatch_spmm_bld(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      type(psb_sspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)       :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_sml_parms), intent(inout)      :: parms
+      type(psb_lsspmat_type), intent(inout)   :: t_prol
+      type(psb_sspmat_type), intent(inout)    :: ac, op_prol, op_restr
+      type(psb_desc_type), intent(out)        :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_s_parmatch_spmm_bld
+  end interface
+
+  interface
+    subroutine amg_s_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(psb_sspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)      :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_sml_parms), intent(inout)      :: parms
+      type(psb_lsspmat_type), intent(inout)   :: t_prol
+      type(psb_sspmat_type), intent(inout)      :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_s_parmatch_unsmth_bld
+  end interface
+
+  interface
+    subroutine amg_s_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+      type(psb_sspmat_type), intent(in)       :: a
+      type(psb_desc_type), intent(inout)      :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_sml_parms), intent(inout)      :: parms
+      type(psb_lsspmat_type), intent(inout)   :: t_prol
+      type(psb_sspmat_type), intent(inout)    :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(inout)    :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_s_parmatch_smth_bld
+  end interface
+
+  interface
+    subroutine amg_s_parmatch_spmm_bld_ov(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data
+      implicit none
+      type(psb_sspmat_type), intent(inout)    :: a
+      type(psb_desc_type), intent(inout)       :: desc_a
+      integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+      type(amg_sml_parms), intent(inout)      :: parms
+      type(psb_lsspmat_type), intent(inout)   :: t_prol
+      type(psb_sspmat_type), intent(inout)    :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(out)          :: desc_ac
+      integer(psb_ipk_), intent(out)          :: info
+    end subroutine amg_s_parmatch_spmm_bld_ov
+  end interface
+
+  interface
+    subroutine amg_s_parmatch_spmm_bld_inner(a,desc_a,ilaggr,nlaggr,parms,&
+         & ac,desc_ac,op_prol,op_restr,t_prol,info)
+      import :: amg_s_parmatch_aggregator_type, psb_desc_type, psb_sspmat_type,&
+           & psb_lsspmat_type, psb_dpk_, psb_ipk_, psb_lpk_, amg_sml_parms, amg_saggr_data,&
+           & psb_s_csr_sparse_mat, psb_ls_csr_sparse_mat
+      implicit none
+      type(psb_s_csr_sparse_mat), intent(inout) :: a
+      type(psb_desc_type), intent(inout)          :: desc_a
+      integer(psb_lpk_), intent(inout)          :: ilaggr(:), nlaggr(:)
+      type(amg_sml_parms), intent(inout)        :: parms
+      type(psb_lsspmat_type), intent(inout)     :: t_prol
+      type(psb_sspmat_type), intent(inout)      :: op_prol,ac, op_restr
+      type(psb_desc_type), intent(out)          :: desc_ac
+      integer(psb_ipk_), intent(out)            :: info
+    end subroutine amg_s_parmatch_spmm_bld_inner
+  end interface
+
+  private :: is_legal_malg, is_legal_csize, is_legal_nsweeps, is_legal_nlevels
+
+contains
+
+  subroutine amg_s_bld_default_w(ag,nr)
+    use psb_realloc_mod
+    implicit none
+    class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_ipk_), intent(in) :: nr
+    integer(psb_ipk_) :: info
+    call psb_realloc(nr,ag%w,info)
+    if (info /= psb_success_) return
+    ag%w = done
+    !call ag%set_c_default_w()
+  end subroutine amg_s_bld_default_w
+
+  subroutine amg_s_set_prm_c_default_w(ag)
+    use psb_realloc_mod
+    use iso_c_binding
+    implicit none
+    class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_ipk_) :: info
+
+    !write(0,*) 'prm_c_deafult_w '
+    call psb_safe_ab_cpy(ag%w,ag%w_nxt,info)
+
+  end subroutine amg_s_set_prm_c_default_w
+
+  subroutine amg_s_parmatch_bld_wnxt(ag,ilaggr,valaggr,nx)
+    use psb_realloc_mod
+    implicit none
+    class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+    integer(psb_lpk_), intent(in)  :: ilaggr(:)
+    real(psb_spk_), intent(in)     :: valaggr(:)
+    integer(psb_ipk_), intent(in)  :: nx
+
+    integer(psb_ipk_) :: info,i,j
+
+    ! The vector was already fixed in the call to BCMatch.
+    !write(0,*) 'Executing bld_wnxt ',nx
+    call psb_realloc(nx,ag%w_nxt,info)
+
+  end subroutine amg_s_parmatch_bld_wnxt
+
+  function amg_s_parmatch_aggregator_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Parallel Matching aggregation"
+  end function amg_s_parmatch_aggregator_fmt
+
+  function amg_s_parmatch_aggregator_xt_desc() result(val)
+    implicit none
+    logical  :: val
+
+    val = .true.
+  end function amg_s_parmatch_aggregator_xt_desc
+
+  function amg_s_parmatch_aggregator_sizeof(ag) result(val)
+    use psb_realloc_mod
+    implicit none
+    class(amg_s_parmatch_aggregator_type), intent(in)  :: ag
+    integer(psb_epk_)  :: val
+
+    val = 4
+    val = val + psb_size(ag%w) + psb_size(ag%w_nxt)
+    if (allocated(ag%ac))      val = val + ag%ac%sizeof()
+    if (allocated(ag%base_a))  val = val + ag%base_a%sizeof()
+    if (allocated(ag%prol))    val = val + ag%prol%sizeof()
+    if (allocated(ag%restr))   val = val + ag%restr%sizeof()
+    if (allocated(ag%desc_ac)) val = val + ag%desc_ac%sizeof()
+    if (allocated(ag%base_desc)) val = val + ag%base_desc%sizeof()
+    if (allocated(ag%desc_ax)) val = val + ag%desc_ax%sizeof()
+
+  end function amg_s_parmatch_aggregator_sizeof
+
+  subroutine  amg_s_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
+    implicit none
+    class(amg_s_parmatch_aggregator_type), intent(in) :: ag
+    type(amg_sml_parms), intent(in)   :: parms
+    integer(psb_ipk_), intent(in)  :: iout
+    integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
+
+    return
+  end subroutine amg_s_parmatch_aggregator_descr
+
+  function is_legal_malg(alg) result(val)
+    logical :: val
+    integer(psb_ipk_) :: alg
+
+    val = (0==alg)
+  end function is_legal_malg
+
+  function is_legal_csize(csize) result(val)
+    logical :: val
+    integer(psb_ipk_) :: csize
+
+    val = ((-1==csize).or.(csize >0))
+  end function is_legal_csize
+
+  function is_legal_nsweeps(nsw) result(val)
+    logical :: val
+    integer(psb_ipk_) :: nsw
+
+    val = (1<=nsw)
+  end function is_legal_nsweeps
+
+  function is_legal_nlevels(nlv) result(val)
+    logical :: val
+    integer(psb_ipk_) :: nlv
+
+    val = (1<=nlv)
+  end function is_legal_nlevels
+
+
+  subroutine  amg_s_parmatch_aggregator_update_next(ag,agnext,info)
+    use psb_realloc_mod
+    implicit none
+    class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+    class(amg_s_base_aggregator_type), target, intent(inout) :: agnext
+    integer(psb_ipk_), intent(out)       :: info
+
+    !
+    !
+    select type(agnext)
+    class is (amg_s_parmatch_aggregator_type)
+      if (.not.is_legal_malg(agnext%matching_alg)) &
+           & agnext%matching_alg = ag%matching_alg
+      if (.not.is_legal_nsweeps(agnext%n_sweeps))&
+           & agnext%n_sweeps     = ag%n_sweeps
+!!$      if (.not.is_legal_csize(agnext%max_csize))&
+!!$           & agnext%max_csize    = ag%max_csize
+!!$      if (.not.is_legal_nlevels(agnext%max_nlevels))&
+!!$           & agnext%max_nlevels  = ag%max_nlevels
+      ! Is this going to generate shallow copies/memory leaks/double frees?
+      ! To be investigated further.
+      call psb_safe_ab_cpy(ag%w_nxt,agnext%w,info)
+      call agnext%set_c_default_w()
+      if (ag%unsmoothed_hierarchy) then
+        agnext%unsmoothed_hierarchy = .true.
+        call move_alloc(ag%rwdesc,agnext%base_desc)
+        call move_alloc(ag%rwa,agnext%base_a)
+      end if
+
+    class default
+      ! What should we do here?
+    end select
+    info = 0
+  end subroutine amg_s_parmatch_aggregator_update_next
+
+  subroutine amg_s_parmatch_aggr_csetc(ag,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=*), intent(in)                  :: what
+    character(len=*), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, iwhat
+    character(len=20)  :: name='s_parmatch_aggr_cseti'
+    info = psb_success_
+
+    ! For now we ignore IDX
+
+    select case(psb_toupper(trim(what)))
+    case('PRMC_REPRODUCIBLE_MATCHING')
+      select case(psb_toupper(trim(val)))
+      case('F','FALSE')
+        ag%reproducible_matching = .false.
+      case('REPRODUCIBLE','TRUE','T')
+        ag%reproducible_matching =.true.
+      end select
+    case('PRMC_NEED_SYMMETRIZE')
+      select case(psb_toupper(trim(val)))
+      case('FALSE','F')
+        ag%need_symmetrize = .false.
+      case('SYMMETRIZE','TRUE','T')
+        ag%need_symmetrize =.true.
+      end select
+    case('PRMC_UNSMOOTHED_HIERARCHY')
+      select case(psb_toupper(trim(val)))
+      case('F','FALSE')
+        ag%unsmoothed_hierarchy = .false.
+      case('T','TRUE')
+        ag%unsmoothed_hierarchy =.true.
+      end select
+    case default
+      ! Do nothing
+    end select
+    return
+  end subroutine amg_s_parmatch_aggr_csetc
+
+  subroutine amg_s_parmatch_aggr_cseti(ag,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=*), intent(in)                  :: what
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, iwhat
+    character(len=20)  :: name='s_parmatch_aggr_cseti'
+    info = psb_success_
+
+    ! For now we ignore IDX
+
+    select case(psb_toupper(trim(what)))
+    case('PRMC_MATCH_ALG')
+      ag%matching_alg=val
+    case('PRMC_SWEEPS')
+      ag%n_sweeps=val
+    case('AGGR_SIZE')
+      ag%orig_aggr_size = val
+      ag%n_sweeps=max(1,ceiling(log(val*1.0)/log(2.0)))
+    case('PRMC_W_SIZE')
+      call ag%bld_default_w(val)
+    case('PRMC_REPRODUCIBLE_MATCHING')
+      ag%reproducible_matching = (val == 1)
+    case('PRMC_NEED_SYMMETRIZE')
+      ag%need_symmetrize = (val == 1)
+    case('PRMC_UNSMOOTHED_HIERARCHY')
+      ag%unsmoothed_hierarchy = (val == 1)
+    case default
+      ! Do nothing
+    end select
+    return
+  end subroutine amg_s_parmatch_aggr_cseti
+
+  subroutine amg_s_parmatch_aggr_set_default(ag)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_parmatch_aggregator_type), intent(inout) :: ag
+    character(len=20)  :: name='s_parmatch_aggr_set_default'
+    call ag%amg_s_base_aggregator_type%default()
+    ag%matching_alg  = 0
+    ag%n_sweeps      = 1
+    ag%jacobi_sweeps = 0
+!!$    ag%max_nlevels   = 36
+!!$    ag%max_csize     = -1
+    !
+    ! Apparently BootCMatch works better
+    ! by keeping all entries
+    !
+    ag%do_clean_zeros = .false.
+
+    return
+
+  end subroutine amg_s_parmatch_aggr_set_default
+
+  subroutine  amg_s_parmatch_aggregator_free(ag,info)
+    use iso_c_binding
+    implicit none
+    class(amg_s_parmatch_aggregator_type), intent(inout) :: ag
+    integer(psb_ipk_), intent(out)       :: info
+
+    info = 0
+    if ((info == 0).and.allocated(ag%w)) deallocate(ag%w,stat=info)
+    if ((info == 0).and.allocated(ag%w_nxt)) deallocate(ag%w_nxt,stat=info)
+    if ((info == 0).and.allocated(ag%prol)) then
+      call ag%prol%free(); deallocate(ag%prol,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%restr)) then
+      call ag%restr%free(); deallocate(ag%restr,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%ac)) then
+      call ag%ac%free(); deallocate(ag%ac,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%base_a)) then
+      call ag%base_a%free(); deallocate(ag%base_a,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%rwa)) then
+      call ag%rwa%free(); deallocate(ag%rwa,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%desc_ac)) then
+      call ag%desc_ac%free(info); deallocate(ag%desc_ac,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%desc_ax)) then
+      call ag%desc_ax%free(info); deallocate(ag%desc_ax,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%base_desc)) then
+      call ag%base_desc%free(info); deallocate(ag%base_desc,stat=info)
+    end if
+    if ((info == 0).and.allocated(ag%rwdesc)) then
+      call ag%rwdesc%free(info); deallocate(ag%rwdesc,stat=info)
+    end if
+
+  end subroutine amg_s_parmatch_aggregator_free
+
+  subroutine  amg_s_parmatch_aggregator_clone(ag,agnext,info)
+    implicit none
+    class(amg_s_parmatch_aggregator_type), intent(inout) :: ag
+    class(amg_s_base_aggregator_type), allocatable, intent(inout) :: agnext
+    integer(psb_ipk_), intent(out)       :: info
+
+    info = 0
+    if (allocated(agnext)) then
+      call agnext%free(info)
+      if (info == 0) deallocate(agnext,stat=info)
+    end if
+    if (info /= 0) return
+    allocate(agnext,source=ag,stat=info)
+    select type(agnext)
+    class is (amg_s_parmatch_aggregator_type)
+      call agnext%set_c_default_w()
+    class default
+      ! Should never ever get here
+      info = -1
+    end select
+  end subroutine amg_s_parmatch_aggregator_clone
+
+  subroutine  amg_s_parmatch_aggregator_bld_map(ag,desc_a,desc_ac,ilaggr,nlaggr,&
+       & op_restr,op_prol,map,info)
+    use psb_base_mod
+    implicit none
+    class(amg_s_parmatch_aggregator_type), target, intent(inout) :: ag
+    type(psb_desc_type), intent(in), target :: desc_a, desc_ac
+    integer(psb_lpk_), intent(inout)        :: ilaggr(:), nlaggr(:)
+    type(psb_sspmat_type), intent(inout)   :: op_prol, op_restr
+    type(psb_slinmap_type), intent(out)     :: map
+    integer(psb_ipk_), intent(out)          :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='s_parmatch_aggregator_bld_map'
+
+    call psb_erractionsave(err_act)
+    !
+    ! Copy the prolongation/restriction matrices into the descriptor map.
+    !  op_restr => PR^T   i.e. restriction  operator
+    !  op_prol => PR     i.e. prolongation operator
+    !
+    !  For parmatch have an explicit copy of the descriptors
+    !
+    if (allocated(ag%desc_ax)) then
+!!$      write(0,*) 'Building linmap with ag%desc_ax ',ag%desc_ax%get_local_rows(),ag%desc_ax%get_local_cols(),&
+!!$           & desc_ac%get_local_rows(),desc_ac%get_local_cols()
+      map = psb_linmap(psb_map_gen_linear_,ag%desc_ax,&
+           & desc_ac,op_restr,op_prol,ilaggr,nlaggr)
+    else
+      map = psb_linmap(psb_map_gen_linear_,desc_a,&
+           & desc_ac,op_restr,op_prol,ilaggr,nlaggr)
+    end if
+    if(info /= psb_success_) then
+      call psb_errpush(psb_err_from_subroutine_,name,a_err='sp_Free')
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+
+    return
+  end subroutine amg_s_parmatch_aggregator_bld_map
+#endif
+end module amg_s_parmatch_aggregator_mod

amgprec/amg_s_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_s_poly_smoother_mod.f90
+!
+! Module: amg_s_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_s_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_s_poly_smoother
+  use amg_s_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_s_base_smoother_type) :: amg_s_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_s_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_sspmat_type), pointer :: pa => null()
+    real(psb_spk_), allocatable    :: poly_beta(:)
+    real(psb_spk_)                 :: cf_a = szero
+    real(psb_spk_)                 :: rho_ba = -sone
+  contains
+    procedure, pass(sm) :: apply_v => amg_s_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_s_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_s_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_s_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_s_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_s_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_s_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_s_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => s_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_s_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_s_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_s_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_s_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => s_poly_smoother_sizeof
+    procedure, pass(sm) :: default => s_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => s_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => s_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => s_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => s_poly_smoother_get_id
+  end type amg_s_poly_smoother_type
+  private :: s_poly_smoother_free, &
+       & s_poly_smoother_sizeof,  s_poly_smoother_get_nzeros, &
+       & s_poly_smoother_get_fmt, s_poly_smoother_get_id, &
+       & s_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_s_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      type(psb_s_vect_type),intent(inout)           :: x
+      type(psb_s_vect_type),intent(inout)           :: y
+      real(psb_spk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_spk_),target, intent(inout)           :: work(:)
+      type(psb_s_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_s_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_s_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_s_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+!!$           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_s_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_spk_),intent(inout)         :: x(:)
+!!$      real(psb_spk_),intent(inout)         :: y(:)
+!!$      real(psb_spk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_spk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_spk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_s_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_s_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_s_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clear_data(sm,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_s_poly_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_s_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_spk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine s_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='s_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_poly_smoother_free
+
+  function s_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function s_poly_smoother_sizeof
+
+  subroutine s_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -sone
+    sm%variant      = amg_poly_lottes_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine s_poly_smoother_default
+
+  function s_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function s_poly_smoother_get_nzeros
+
+  function s_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function s_poly_smoother_get_wrksize
+
+  function s_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function s_poly_smoother_get_fmt
+
+  function s_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function s_poly_smoother_get_id
+
+
+end module amg_s_poly_smoother

amgprec/amg_s_prec_mod.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -40,7 +40,7 @@
 ! Module: amg_s_prec_mod
 !
 !  This module defines the user interfaces to the real/complex, single/double
-!  precision versions of the user-level MLD2P4 routines.
+!  precision versions of the user-level AMG4PSBLAS routines.
 !
 module amg_s_prec_mod
 
@@ -55,12 +55,7 @@ module amg_s_prec_mod
   use amg_s_ainv_solver
   use amg_s_invk_solver
   use amg_s_invt_solver
-
-  interface amg_precset
-    module procedure amg_s_iprecsetsm, amg_s_iprecsetsv, &
-         & amg_s_cprecseti, amg_s_cprecsetc, amg_s_cprecsetr, &
-         & amg_s_iprecsetag
-  end interface amg_precset
+  use amg_s_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_s_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)
@@ -82,61 +77,4 @@ module amg_s_prec_mod
     end subroutine amg_s_extprol_bld
   end interface amg_extprol_bld
 
-contains
-
-  subroutine amg_s_iprecsetsm(p,val,info,pos)
-    type(amg_sprec_type), intent(inout)    :: p
-    class(amg_s_base_smoother_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)           :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(val,info,pos=pos)
-  end subroutine amg_s_iprecsetsm
-
-  subroutine amg_s_iprecsetsv(p,val,info,pos)
-    type(amg_sprec_type), intent(inout)    :: p
-    class(amg_s_base_solver_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_s_iprecsetsv
-
-  subroutine amg_s_iprecsetag(p,val,info,pos)
-    type(amg_sprec_type), intent(inout)    :: p
-    class(amg_s_base_aggregator_type), intent(in)   :: val
-    integer(psb_ipk_), intent(out)                :: info
-    character(len=*), optional, intent(in)      :: pos
-    call p%set(val,info, pos=pos)
-  end subroutine amg_s_iprecsetag
-
-  subroutine amg_s_cprecseti(p,what,val,info,pos)
-    type(amg_sprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    integer(psb_ipk_), intent(in)           :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_s_cprecseti
-
-  subroutine amg_s_cprecsetr(p,what,val,info,pos)
-    type(amg_sprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    real(psb_spk_), intent(in)             :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_s_cprecsetr
-
-  subroutine amg_s_cprecsetc(p,what,val,info,pos)
-    type(amg_sprec_type), intent(inout)   :: p
-    character(len=*), intent(in)            :: what
-    character(len=*), intent(in)            :: val
-    integer(psb_ipk_), intent(out)          :: info
-    character(len=*), optional, intent(in)      :: pos
-
-    call p%set(what,val,info,pos=pos)
-  end subroutine amg_s_cprecsetc
-
 end module amg_s_prec_mod

amgprec/amg_s_prec_type.f90

@@ -2,9 +2,9 @@
 !
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !
-!    (C) Copyright 2020
+!    (C) Copyright 2021
 !
 !        Salvatore Filippone
 !        Pasqua D'Ambra
@@ -66,7 +66,7 @@ module amg_s_prec_type
   !
   !  This is the data type containing all the information about the multilevel
   !  preconditioner ('d', 's', 'c' and 'z', according to the real/complex,
-  !  single/double precision version of  MLD2P4).
+  !  single/double precision version of  AMG4PSBLAS).
   !  It consists of an array of 'one-level' intermediate data structures
   !  of type amg_sonelev_type, each containing the information needed to apply
   !  the smoothing and the coarse-space correction at a generic level. RT is the
@@ -135,8 +135,11 @@ module amg_s_prec_type
     procedure, pass(prec)               :: build        => amg_sprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_s_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_s_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_s_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_s_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_s_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_sfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_sfile_prec_memory_use
   end type amg_sprec_type
 
   private :: amg_s_dump, amg_s_get_compl,  amg_s_cmp_compl,&
@@ -155,16 +158,35 @@ module amg_s_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_sfile_prec_descr(prec,iout,root)
+    subroutine amg_sfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_sprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_sprec_type), intent(in)      :: prec
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_sfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_sfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_sprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_sfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_sprec_sizeof
   end interface
@@ -342,6 +364,14 @@ module amg_s_prec_type
     end subroutine amg_s_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_s_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_s_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -424,11 +454,22 @@ contains
     end if
   end function amg_s_get_nzeros
 
-  function amg_sprec_sizeof(prec) result(val)
+  function amg_sprec_sizeof(prec, global) result(val)
     implicit none
     class(amg_sprec_type), intent(in) :: prec
-    integer(psb_epk_) :: val
+    logical, intent(in), optional :: global
+    integer(psb_epk_) :: val    
     integer(psb_ipk_)        :: i
+    type(psb_ctxt_type) :: ctxt
+    
+    logical :: global_
+
+    if (present(global)) then
+      global_ = global
+    else
+      global_ = .false.
+    end if
+    
     val = 0
     val = val + psb_sizeof_ip
     if (allocated(prec%precv)) then
@@ -436,6 +477,11 @@ contains
         val = val + prec%precv(i)%sizeof()
       end do
     end if
+    if (global_) then
+      ctxt = prec%ctxt
+      call psb_sum(ctxt,val)
+    end if
+
   end function amg_sprec_sizeof
 
   !
@@ -599,6 +645,68 @@ contains
 
   end subroutine amg_s_prec_free
 
+  subroutine amg_s_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_smoothers_free
+
+  subroutine amg_s_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_hierarchy_free
 
 
   !

amgprec/amg_s_slu_solver.F90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -385,20 +385,22 @@ contains
   
   end subroutine s_slu_solver_finalize
 
-  subroutine s_slu_solver_descr(sv,info,iout,coarse)
+  subroutine s_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_s_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_symdec_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_s_symdec_aggregator_fmt
   
-  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_symdec_aggregator_descr

amgprec/amg_z_ainv_solver.F90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions
@@ -55,13 +58,13 @@ module amg_z_ainv_solver
     procedure, pass(sv) :: check   => amg_z_ainv_solver_check
     procedure, pass(sv) :: build   => amg_z_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_z_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_z_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_z_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_z_ainv_solver_csetr
-    procedure, pass(sv) :: seti    => amg_z_ainv_solver_seti
-    procedure, pass(sv) :: setc    => amg_z_ainv_solver_setc
-    procedure, pass(sv) :: setr    => amg_z_ainv_solver_setr
-    generic, public :: set => seti, setr, setc
+!!$    procedure, pass(sv) :: seti    => amg_z_ainv_solver_seti
+!!$    procedure, pass(sv) :: setc    => amg_z_ainv_solver_setc
+!!$    procedure, pass(sv) :: setr    => amg_z_ainv_solver_setr
     procedure, pass(sv) :: descr   => amg_z_ainv_solver_descr
     procedure, pass(sv) :: default => z_ainv_solver_default
     procedure, nopass   :: stringval  => z_ainv_stringval
@@ -83,6 +86,16 @@ module amg_z_ainv_solver
     end subroutine amg_z_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_ainv_solver_type), intent(inout)              :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_z_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_z_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -159,44 +172,44 @@ module amg_z_ainv_solver
     end subroutine amg_z_ainv_solver_csetr
   end interface
 
-  interface
-    subroutine amg_z_ainv_solver_setc(sv,what,val,info)
-      import :: amg_z_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_z_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      character(len=*), intent(in)                 :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_z_ainv_solver_setc
-  end interface
+!!$  interface
+!!$    subroutine amg_z_ainv_solver_setc(sv,what,val,info)
+!!$      import :: amg_z_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_z_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      character(len=*), intent(in)                 :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_z_ainv_solver_setc
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_z_ainv_solver_seti(sv,what,val,info)
+!!$      import :: amg_z_ainv_solver_type, psb_ipk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_z_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      integer(psb_ipk_), intent(in)                :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_z_ainv_solver_seti
+!!$  end interface
+!!$
+!!$  interface
+!!$    subroutine amg_z_ainv_solver_setr(sv,what,val,info)
+!!$      import :: amg_z_ainv_solver_type, psb_ipk_, psb_dpk_
+!!$      Implicit none
+!!$      ! Arguments
+!!$      class(amg_z_ainv_solver_type), intent(inout) :: sv
+!!$      integer(psb_ipk_), intent(in)                :: what
+!!$      real(psb_dpk_), intent(in)                   :: val
+!!$      integer(psb_ipk_), intent(out)               :: info
+!!$    end subroutine amg_z_ainv_solver_setr
+!!$  end interface
 
   interface
-    subroutine amg_z_ainv_solver_seti(sv,what,val,info)
-      import :: amg_z_ainv_solver_type, psb_ipk_
-      Implicit none
-      ! Arguments
-      class(amg_z_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      integer(psb_ipk_), intent(in)                :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_z_ainv_solver_seti
-  end interface
-
-  interface
-    subroutine amg_z_ainv_solver_setr(sv,what,val,info)
-      import :: amg_z_ainv_solver_type, psb_ipk_, psb_dpk_
-      Implicit none
-      ! Arguments
-      class(amg_z_ainv_solver_type), intent(inout) :: sv
-      integer(psb_ipk_), intent(in)                :: what
-      real(psb_dpk_), intent(in)                   :: val
-      integer(psb_ipk_), intent(out)               :: info
-    end subroutine amg_z_ainv_solver_setr
-  end interface
-
-  interface
-    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -206,7 +219,7 @@ module amg_z_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_ainv_solver_descr
   end interface
 

amgprec/amg_z_as_smoother.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -396,21 +396,23 @@ contains
   end subroutine z_as_smoother_default
 
 
-  subroutine z_as_smoother_descr(sm,info,iout,coarse)
+  subroutine z_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_z_base_aggregator_mod.f90

@@ -2,9 +2,9 @@
 !   
 !                             AMG4PSBLAS version 1.0
 !    Algebraic Multigrid Package
-!               based on PSBLAS (Parallel Sparse BLAS version 3.5)
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
 !    
-!    (C) Copyright 2020 
+!    (C) Copyright 2021 
 !  
 !        Salvatore Filippone  
 !        Pasqua D'Ambra   
@@ -126,7 +126,7 @@ module amg_z_base_aggregator_mod
            & psb_z_coo_sparse_mat, amg_dml_parms, psb_dpk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_z_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_dml_parms), intent(inout)         :: parms 
       type(psb_z_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -144,7 +144,7 @@ module amg_z_base_aggregator_mod
            & psb_z_coo_sparse_mat, amg_dml_parms, psb_dpk_, psb_ipk_, psb_lpk_
       implicit none
       type(psb_z_csr_sparse_mat), intent(inout) :: a_csr
-      type(psb_desc_type), intent(in)            :: desc_a
+      type(psb_desc_type), intent(inout)         :: desc_a
       integer(psb_lpk_), intent(inout)           :: nlaggr(:)
       type(amg_dml_parms), intent(inout)         :: parms 
       type(psb_z_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr
@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_z_base_aggregator_xt_desc
 
-  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_z_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_z_base_aggregator_descr

amgprec/amg_z_base_ainv_mod.f90

@@ -1,11 +1,14 @@
-!
-!
-!                       AMG-AINV: Approximate Inverse plugin for
+!  
+!   
 !                             AMG4PSBLAS version 1.0
-!
-!    (C) Copyright 2020
-!
-!                        Salvatore Filippone  University of Rome Tor Vergata
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante 
 !
 !    Redistribution and use in source and binary forms, with or without
 !    modification, are permitted provided that the following conditions