Added selection options for Matching-based aggregation

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@
 
 @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)
+
+

amgprec/Makefile

@@ -15,8 +15,8 @@ DMODOBJS=amg_d_prec_type.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_rkr_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 \
@@ -26,7 +26,8 @@ SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.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_rkr_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 \
@@ -36,7 +37,7 @@ ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.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_rkr_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 \
@@ -46,7 +47,7 @@ CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.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_rkr_solver.o
+	amg_c_invk_solver.o amg_c_invt_solver.o amg_c_krm_solver.o
 
 
 
@@ -74,21 +75,21 @@ lib: $(OBJS) impld
 	/bin/cp -p *$(.mod) $(MODDIR)
 
 
-$(MODOBJS): $(PSBLAS_MODDIR)/$(BASEMODNAME)$(.mod)
+$(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_rkr_solver.o: amg_s_prec_type.o  amg_s_base_solver_mod.o 
-amg_d_rkr_solver.o: amg_d_prec_type.o  amg_d_base_solver_mod.o 
-amg_c_rkr_solver.o: amg_c_prec_type.o  amg_c_base_solver_mod.o 
-amg_z_rkr_solver.o: amg_z_prec_type.o  amg_z_base_solver_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_rkr_solver.o
-amg_d_prec_mod.o: amg_d_rkr_solver.o 
-amg_c_prec_mod.o: amg_c_rkr_solver.o 
-amg_z_prec_mod.o: amg_z_rkr_solver.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)
@@ -111,25 +112,27 @@ 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

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_base_prec_type.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 2020
+!
+!        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
@@ -33,8 +33,8 @@
 !    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_base_prec_type.F90
 !
 ! Module: amg_base_prec_type
@@ -50,16 +50,16 @@
 !
 !  It contains routines for
 !  - converting character constants defining the preconditioner into integer
-!    constants; 
+!    constants;
 !  - 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_base_prec_type
 
   !
-  ! This reduces the size of .mod file. Without the ONLY clause compilation 
+  ! This reduces the size of .mod file. Without the ONLY clause compilation
   ! blows up on some systems.
   !
   use psb_const_mod
@@ -78,7 +78,7 @@ module amg_base_prec_type
        & psb_err_from_subroutine_, psb_err_missing_override_method_, &
        & psb_error_handler, psb_out_unit, psb_err_unit
 
-  ! 
+  !
   ! Version numbers
   !
   character(len=*), parameter   :: amg_version_string_ = "1.0.0"
@@ -120,7 +120,7 @@ module amg_base_prec_type
     procedure, pass(pm) :: printout => d_ml_parms_printout
   end type amg_dml_parms
 
-  
+
 
   type amg_iaggr_data
     !
@@ -134,32 +134,32 @@ module amg_base_prec_type
     integer(psb_ipk_)                  :: min_coarse_size = -ione
     integer(psb_ipk_)                  :: min_coarse_size_per_process = -ione
     integer(psb_lpk_)                  :: target_coarse_size
-    ! 2. maximum number of levels.   Defaults to  20 
+    ! 2. maximum number of levels.   Defaults to  20
     integer(psb_ipk_)                  :: max_levs    = 20_psb_ipk_
   end type amg_iaggr_data
-  
+
   type, extends(amg_iaggr_data) :: amg_saggr_data
-    ! 3. min_cr_ratio   = 1.5     
+    ! 3. min_cr_ratio   = 1.5
     real(psb_spk_)                     :: min_cr_ratio   = 1.5_psb_spk_
     real(psb_spk_)                     :: op_complexity  = szero
     real(psb_spk_)                     :: avg_cr         = szero
   end type amg_saggr_data
 
   type, extends(amg_iaggr_data) :: amg_daggr_data
-    ! 3. min_cr_ratio   = 1.5     
+    ! 3. min_cr_ratio   = 1.5
     real(psb_dpk_)                     :: min_cr_ratio   = 1.5_psb_dpk_
     real(psb_dpk_)                     :: op_complexity  = dzero
     real(psb_dpk_)                     :: avg_cr         = dzero
   end type amg_daggr_data
 
-  
+
 
   !
   ! Entries in iprcparm
   !
   ! These are in baseprec
-  ! 
-  integer(psb_ipk_), parameter :: amg_smoother_type_   =  1         
+  !
+  integer(psb_ipk_), parameter :: amg_smoother_type_   =  1
   integer(psb_ipk_), parameter :: amg_sub_solve_       =  2
   integer(psb_ipk_), parameter :: amg_sub_restr_       =  3
   integer(psb_ipk_), parameter :: amg_sub_prol_        =  4
@@ -169,7 +169,7 @@ module amg_base_prec_type
 
   !
   ! These are in onelev
-  ! 
+  !
   integer(psb_ipk_), parameter :: amg_ml_cycle_             = 20
   integer(psb_ipk_), parameter :: amg_smoother_sweeps_pre_  = 21
   integer(psb_ipk_), parameter :: amg_smoother_sweeps_post_ = 22
@@ -181,7 +181,7 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_aggr_eig_             = 28
   integer(psb_ipk_), parameter :: amg_aggr_filter_          = 29
   integer(psb_ipk_), parameter :: amg_coarse_mat_           = 30
-  integer(psb_ipk_), parameter :: amg_coarse_solve_         = 31 
+  integer(psb_ipk_), parameter :: amg_coarse_solve_         = 31
   integer(psb_ipk_), parameter :: amg_coarse_sweeps_        = 32
   integer(psb_ipk_), parameter :: amg_coarse_fillin_        = 33
   integer(psb_ipk_), parameter :: amg_coarse_subsolve_      = 34
@@ -196,7 +196,7 @@ module amg_base_prec_type
 
   !
   ! Legal values for entry: amg_smoother_type_
-  ! 
+  !
   integer(psb_ipk_), parameter :: amg_min_prec_ = 0
   integer(psb_ipk_), parameter :: amg_noprec_   = 0
   integer(psb_ipk_), parameter :: amg_base_smooth_ = 0
@@ -234,7 +234,8 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_sludist_       = amg_slv_delta_+9
   integer(psb_ipk_), parameter :: amg_mumps_         = amg_slv_delta_+10
   integer(psb_ipk_), parameter :: amg_bwgs_          = amg_slv_delta_+11
-  integer(psb_ipk_), parameter :: amg_max_sub_solve_ = amg_slv_delta_+11
+  integer(psb_ipk_), parameter :: amg_krm_           = amg_slv_delta_+12
+  integer(psb_ipk_), parameter :: amg_max_sub_solve_ = amg_slv_delta_+12
   integer(psb_ipk_), parameter :: amg_min_sub_solve_ = amg_diag_scale_
 
   !
@@ -243,7 +244,7 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_ilu_scale_none_    = 0
   integer(psb_ipk_), parameter :: amg_ilu_scale_maxval_  = 1
   integer(psb_ipk_), parameter :: amg_ilu_scale_diag_    = 2
-  integer(psb_ipk_), parameter :: amg_ilu_scale_arwsum_  = 3 
+  integer(psb_ipk_), parameter :: amg_ilu_scale_arwsum_  = 3
   integer(psb_ipk_), parameter :: amg_ilu_scale_aclsum_  = 4
   integer(psb_ipk_), parameter :: amg_ilu_scale_arcsum_  = 5
   ! For the time being enable only maxval scale
@@ -261,19 +262,21 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_new_ml_prec_  = 7
   integer(psb_ipk_), parameter :: amg_mult_dev_ml_  = 7
   integer(psb_ipk_), parameter :: amg_max_ml_cycle_  = 8
-  !  
+  !
   ! Legal values for entry: amg_par_aggr_alg_
   !
   integer(psb_ipk_), parameter :: amg_dec_aggr_      = 0
   integer(psb_ipk_), parameter :: amg_sym_dec_aggr_  = 1
-  integer(psb_ipk_), parameter :: amg_ext_aggr_      = 2 
-  integer(psb_ipk_), parameter :: amg_max_par_aggr_alg_  = amg_ext_aggr_     
+  integer(psb_ipk_), parameter :: amg_ext_aggr_      = 2
+  integer(psb_ipk_), parameter :: amg_coupled_aggr_  = 3
+  integer(psb_ipk_), parameter :: amg_max_par_aggr_alg_  = amg_coupled_aggr_
   !
   ! Legal values for entry: amg_aggr_type_
   !
   integer(psb_ipk_), parameter :: amg_noalg_       = 0
   integer(psb_ipk_), parameter :: amg_soc1_        = 1
   integer(psb_ipk_), parameter :: amg_soc2_        = 2
+  integer(psb_ipk_), parameter :: amg_matchboxp_   = 3
   !
   ! Legal values for entry: amg_aggr_prol_
   !
@@ -288,7 +291,7 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_no_filter_mat_  = 0
   integer(psb_ipk_), parameter :: amg_filter_mat_     = 1
   integer(psb_ipk_), parameter :: amg_max_filter_mat_ = amg_filter_mat_
-  !  
+  !
   ! Legal values for entry: amg_aggr_ord_
   !
   integer(psb_ipk_), parameter :: amg_aggr_ord_nat_      = 0
@@ -308,7 +311,7 @@ module amg_base_prec_type
   !
   integer(psb_ipk_), parameter :: amg_distr_mat_      = 0
   integer(psb_ipk_), parameter :: amg_repl_mat_       = 1
-  integer(psb_ipk_), parameter :: amg_max_coarse_mat_ = amg_repl_mat_  
+  integer(psb_ipk_), parameter :: amg_max_coarse_mat_ = amg_repl_mat_
   !
   ! Legal values for entry: amg_prec_status_
   !
@@ -338,7 +341,7 @@ module amg_base_prec_type
 
   !
   ! Fields for sparse matrices ensembles stored in av()
-  ! 
+  !
   integer(psb_ipk_), parameter :: amg_l_pr_        = 1
   integer(psb_ipk_), parameter :: amg_u_pr_        = 2
   integer(psb_ipk_), parameter :: amg_bp_ilu_avsz_ = 2
@@ -347,7 +350,7 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_sm_pr_t_     = 5
   integer(psb_ipk_), parameter :: amg_sm_pr_       = 6
   integer(psb_ipk_), parameter :: amg_smth_avsz_   = 6
-  integer(psb_ipk_), parameter :: amg_max_avsz_    = amg_smth_avsz_ 
+  integer(psb_ipk_), parameter :: amg_max_avsz_    = amg_smth_avsz_
 
   !
   ! Character constants used by amg_file_prec_descr
@@ -362,12 +365,13 @@ module amg_base_prec_type
   character(len=15), parameter, private :: &
        &  matrix_names(0:1)=(/'distributed   ','replicated    '/)
   character(len=18), parameter, private :: &
-       &  aggr_type_names(0:2)=(/'None              ',&
-       &  'SOC measure 1     ', 'SOC Measure 2     '/)
+       &  aggr_type_names(0:3)=(/'None              ',&
+       &  'SOC measure 1     ', 'SOC Measure 2     ',&
+       &  'Parallel Matching '/)
   character(len=18), parameter, private :: &
-       &  par_aggr_alg_names(0:2)=(/&
+       &  par_aggr_alg_names(0:3)=(/&
        & 'decoupled aggr.   ', 'sym. dec. aggr.   ',&
-       & 'user defined aggr.'/)
+       & 'user defined aggr.', 'coupled aggr.     '/)
   character(len=18), parameter, private :: &
        &  ord_names(0:1)=(/'Natural ordering  ','Desc. degree ord. '/)
   character(len=6), parameter, private :: &
@@ -389,13 +393,13 @@ module amg_base_prec_type
        & 'MILU(n)       ','ILU(t,n)      ',&
        & 'SuperLU       ','UMFPACK LU    ',&
        & 'SuperLU_Dist  ','MUMPS         ',&
-       & 'Backward GS   '/)
+       & 'Backward GS   ','Krylov Method '/)
 
   interface amg_check_def
     module procedure amg_icheck_def, amg_scheck_def, amg_dcheck_def
   end interface
 
-  interface psb_bcast 
+  interface psb_bcast
     module procedure amg_ml_bcast, amg_sml_bcast, amg_dml_bcast
   end interface psb_bcast
 
@@ -408,9 +412,9 @@ module amg_base_prec_type
   ! Will need a more sophisticated strategy.
   !
   logical, private, save :: do_remap=.false.
-  
+
 contains
-  
+
   function amg_get_do_remap() result(res)
     implicit none
     logical :: res
@@ -424,7 +428,7 @@ contains
 
     do_remap = val
   end subroutine amg_set_do_remap
-  
+
   !
   ! Function: amg_stringval
   !
@@ -439,10 +443,10 @@ contains
   !
   function amg_stringval(string) result(val)
     use psb_prec_const_mod
-    implicit none 
+    implicit none
   ! Arguments
     character(len=*), intent(in) :: string
-    integer(psb_ipk_) :: val 
+    integer(psb_ipk_) :: val
     character(len=*), parameter :: name='amg_stringval'
   ! Local variable
     integer :: index_tab
@@ -450,14 +454,14 @@ contains
     index_tab=index(string,char(9))
     if (index_tab.NE.0)  then
        string2=string(1:index_tab-1)
-    else 
+    else
        string2=string
     endif
     select case(psb_toupper(trim(string2)))
     case('NONE')
       val = 0
     case('HALO')
-      val = psb_halo_ 
+      val = psb_halo_
     case('SUM')
       val = psb_sum_
     case('AVG')
@@ -506,7 +510,11 @@ contains
       val = amg_soc2_
     case('SOC1')
       val = amg_soc1_
-    case('DEC')
+    case('MATCHBOXP','PARMATCH')
+      val = amg_matchboxp_
+    case('COUPLED','COUP')
+      val = amg_coupled_aggr_
+    case('DEC','DECOUPLED')
       val = amg_dec_aggr_
     case('SYMDEC')
       val = amg_sym_dec_aggr_
@@ -538,6 +546,8 @@ contains
       val = amg_jac_
     case('L1-JACOBI')
       val = amg_l1_jac_
+    case('KRM')
+      val = amg_krm_
     case('AS')
       val = amg_as_
     case('A_NORMI')
@@ -553,56 +563,56 @@ contains
     case('OUTER_SWEEPS')
       val = amg_outer_sweeps_
     case('LOCAL_SOLVER')
-      val = amg_local_solver_  
+      val = amg_local_solver_
     case('GLOBAL_SOLVER')
-      val = amg_global_solver_  
+      val = amg_global_solver_
     case default
       val  = -1
     end select
   end function amg_stringval
 
   subroutine  ml_parms_get_coarse(pm,pmin)
-    implicit none 
+    implicit none
     class(amg_ml_parms), intent(inout) :: pm
     class(amg_ml_parms), intent(in)    :: pmin
     pm%coarse_mat   = pmin%coarse_mat
     pm%coarse_solve = pmin%coarse_solve
   end subroutine ml_parms_get_coarse
-    
-    
-  
+
+
+
   subroutine ml_parms_printout(pm,iout)
-    implicit none 
+    implicit none
     class(amg_ml_parms), intent(in) :: pm
     integer(psb_ipk_), intent(in)             :: iout
-    
+
     write(iout,*) 'ML    : ',pm%ml_cycle
     write(iout,*) 'Sweeps: ',pm%sweeps_pre,pm%sweeps_post
     write(iout,*) 'AGGR  : ',pm%par_aggr_alg,pm%aggr_prol, pm%aggr_ord
     write(iout,*) '      : ',pm%aggr_omega_alg,pm%aggr_eig,pm%aggr_filter
     write(iout,*) 'COARSE: ',pm%coarse_mat,pm%coarse_solve
   end subroutine ml_parms_printout
-    
-  
+
+
   subroutine s_ml_parms_printout(pm,iout)
-    implicit none 
+    implicit none
     class(amg_sml_parms), intent(in) :: pm
     integer(psb_ipk_), intent(in)             :: iout
-    
+
     call pm%amg_ml_parms%printout(iout)
     write(iout,*) 'REAL  : ',pm%aggr_omega_val,pm%aggr_thresh
   end subroutine s_ml_parms_printout
-    
-  
+
+
   subroutine d_ml_parms_printout(pm,iout)
-    implicit none 
+    implicit none
     class(amg_dml_parms), intent(in) :: pm
     integer(psb_ipk_), intent(in)             :: iout
-    
+
     call pm%amg_ml_parms%printout(iout)
     write(iout,*) 'REAL  : ',pm%aggr_omega_val,pm%aggr_thresh
   end subroutine d_ml_parms_printout
-    
+
 
   !
   ! Routines printing out a description of the preconditioner
@@ -618,7 +628,7 @@ contains
     info = psb_success_
     if ((pm%ml_cycle>=amg_no_ml_).and.(pm%ml_cycle<=amg_max_ml_cycle_)) then
 
-      
+
       write(iout,*) '  Multilevel cycle: ',&
            &   ml_names(pm%ml_cycle)
       select case (pm%ml_cycle)
@@ -644,7 +654,7 @@ contains
     info = psb_success_
     if ((pm%ml_cycle>=amg_no_ml_).and.(pm%ml_cycle<=amg_max_ml_cycle_)) then
 
-      
+
       write(iout,*) '  Parallel aggregation algorithm: ',&
            &   par_aggr_alg_names(pm%par_aggr_alg)
       if (pm%aggr_type>0) write(iout,*) '  Aggregation type: ',&
@@ -656,23 +666,23 @@ contains
         write(iout,*) '  Aggregation prolongator: ', &
              &  aggr_prols(pm%aggr_prol)
         if (pm%aggr_prol /= amg_no_smooth_) then
-          write(iout,*) '              with: ', aggr_filters(pm%aggr_filter)                  
-          if (pm%aggr_omega_alg == amg_eig_est_) then 
+          write(iout,*) '              with: ', aggr_filters(pm%aggr_filter)
+          if (pm%aggr_omega_alg == amg_eig_est_) then
             write(iout,*) '  Damping omega computation: spectral radius estimate'
             write(iout,*) '  Spectral radius estimate: ', &
                  & eigen_estimates(pm%aggr_eig)
-          else if (pm%aggr_omega_alg == amg_user_choice_) then 
+          else if (pm%aggr_omega_alg == amg_user_choice_) then
             write(iout,*) '  Damping omega computation: user defined value.'
-          else 
+          else
             write(iout,*) '  Damping omega computation: unknown value in iprcparm!!'
           end if
         end if
       !end if
     else
       write(iout,*) '  Multilevel type: Unkonwn value. Something is amiss....',&
-           & pm%ml_cycle           
+           & pm%ml_cycle
     end if
-    
+
     return
 
   end subroutine ml_parms_mldescr
@@ -689,13 +699,13 @@ contains
     logical :: coarse_
 
     info = psb_success_
-    if (present(coarse)) then 
+    if (present(coarse)) then
       coarse_ = coarse
     else
       coarse_ = .false.
     end if
 
-    if (coarse_) then 
+    if (coarse_) then
       call pm%coarsedescr(iout,info)
     end if
 
@@ -718,12 +728,12 @@ contains
     write(iout,*) '  Coarse matrix: ',&
          & matrix_names(pm%coarse_mat)
     select case(pm%coarse_solve)
-    case (amg_bjac_,amg_as_) 
+    case (amg_bjac_,amg_as_)
       write(iout,*) '  Number of sweeps : ',&
            & pm%sweeps_pre
       write(iout,*) '  Coarse solver: ',&
            & 'Block Jacobi'
-    case (amg_l1_bjac_) 
+    case (amg_l1_bjac_)
       write(iout,*) '  Number of sweeps : ',&
            & pm%sweeps_pre
       write(iout,*) '  Coarse solver: ',&
@@ -790,7 +800,7 @@ contains
   !
 
   function is_legal_base_prec(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_base_prec
 
@@ -798,60 +808,68 @@ contains
     return
   end function is_legal_base_prec
   function is_int_non_negative(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_int_non_negative
 
-    is_int_non_negative = (ip >= 0) 
+    is_int_non_negative = (ip >= 0)
     return
   end function is_int_non_negative
   function is_legal_ilu_scale(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ilu_scale
     is_legal_ilu_scale = ((ip >= amg_ilu_scale_none_).and.(ip <= amg_max_ilu_scale_))
     return
   end function is_legal_ilu_scale
   function is_int_positive(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_int_positive
 
-    is_int_positive = (ip >= 1) 
+    is_int_positive = (ip >= 1)
     return
   end function is_int_positive
   function is_legal_prolong(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_prolong
     is_legal_prolong = ((ip>=psb_none_).and.(ip<=psb_square_root_))
     return
   end function is_legal_prolong
   function is_legal_restrict(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_restrict
     is_legal_restrict = ((ip == psb_nohalo_).or.(ip==psb_halo_))
     return
   end function is_legal_restrict
   function is_legal_ml_cycle(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_cycle
 
     is_legal_ml_cycle = ((ip>=amg_no_ml_).and.(ip<=amg_max_ml_cycle_))
     return
   end function is_legal_ml_cycle
-  function is_legal_ml_par_aggr_alg(ip)
-    implicit none 
+  function is_legal_coupled_par_aggr_alg(ip)
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
-    logical             :: is_legal_ml_par_aggr_alg
+    logical             :: is_legal_coupled_par_aggr_alg
 
-    is_legal_ml_par_aggr_alg = ((ip>=amg_dec_aggr_).and.(ip<=amg_max_par_aggr_alg_))
+    is_legal_coupled_par_aggr_alg = (ip == amg_coupled_aggr_)
     return
-  end function is_legal_ml_par_aggr_alg
+  end function is_legal_coupled_par_aggr_alg
+  function is_legal_decoupled_par_aggr_alg(ip)
+    implicit none
+    integer(psb_ipk_), intent(in) :: ip
+    logical             :: is_legal_decoupled_par_aggr_alg
+
+    is_legal_decoupled_par_aggr_alg = ((ip>=amg_dec_aggr_).and.(ip<=amg_max_par_aggr_alg_))
+    return
+  end function is_legal_decoupled_par_aggr_alg
   function is_legal_ml_aggr_type(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_aggr_type
 
@@ -859,7 +877,7 @@ contains
     return
   end function is_legal_ml_aggr_type
   function is_legal_ml_aggr_ord(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_aggr_ord
 
@@ -867,7 +885,7 @@ contains
     return
   end function is_legal_ml_aggr_ord
   function is_legal_ml_aggr_omega_alg(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_aggr_omega_alg
 
@@ -875,7 +893,7 @@ contains
     return
   end function is_legal_ml_aggr_omega_alg
   function is_legal_ml_aggr_eig(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_aggr_eig
 
@@ -883,7 +901,7 @@ contains
     return
   end function is_legal_ml_aggr_eig
   function is_legal_ml_aggr_prol(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_aggr_prol
 
@@ -891,7 +909,7 @@ contains
     return
   end function is_legal_ml_aggr_prol
   function is_legal_ml_coarse_mat(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_coarse_mat
 
@@ -899,7 +917,7 @@ contains
     return
   end function is_legal_ml_coarse_mat
   function is_legal_aggr_filter(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_aggr_filter
 
@@ -907,7 +925,7 @@ contains
     return
   end function is_legal_aggr_filter
   function is_distr_ml_coarse_mat(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_distr_ml_coarse_mat
 
@@ -915,7 +933,7 @@ contains
     return
   end function is_distr_ml_coarse_mat
   function is_legal_ml_fact(ip)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ml_fact
     ! Here the minimum is really 1, amg_fact_none_ is not acceptable.
@@ -925,7 +943,7 @@ contains
   end function is_legal_ml_fact
   function is_legal_ilu_fact(ip)
     use psb_prec_const_mod
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ilu_fact
 
@@ -934,14 +952,14 @@ contains
     return
   end function is_legal_ilu_fact
   function is_legal_d_omega(ip)
-    implicit none 
+    implicit none
     real(psb_dpk_), intent(in) :: ip
     logical             :: is_legal_d_omega
     is_legal_d_omega = ((ip>=0.0d0).and.(ip<=2.0d0))
     return
   end function is_legal_d_omega
   function is_legal_d_fact_thrs(ip)
-    implicit none 
+    implicit none
     real(psb_dpk_), intent(in) :: ip
     logical             :: is_legal_d_fact_thrs
 
@@ -949,7 +967,7 @@ contains
     return
   end function is_legal_d_fact_thrs
   function is_legal_d_aggr_thrs(ip)
-    implicit none 
+    implicit none
     real(psb_dpk_), intent(in) :: ip
     logical             :: is_legal_d_aggr_thrs
 
@@ -958,14 +976,14 @@ contains
   end function is_legal_d_aggr_thrs
 
   function is_legal_s_omega(ip)
-    implicit none 
+    implicit none
     real(psb_spk_), intent(in) :: ip
     logical             :: is_legal_s_omega
     is_legal_s_omega = ((ip>=0.0).and.(ip<=2.0))
     return
   end function is_legal_s_omega
   function is_legal_s_fact_thrs(ip)
-    implicit none 
+    implicit none
     real(psb_spk_), intent(in) :: ip
     logical             :: is_legal_s_fact_thrs
 
@@ -973,7 +991,7 @@ contains
     return
   end function is_legal_s_fact_thrs
   function is_legal_s_aggr_thrs(ip)
-    implicit none 
+    implicit none
     real(psb_spk_), intent(in) :: ip
     logical             :: is_legal_s_aggr_thrs
 
@@ -983,11 +1001,11 @@ contains
 
 
   subroutine amg_icheck_def(ip,name,id,is_legal)
-    implicit none 
+    implicit none
     integer(psb_ipk_), intent(inout) :: ip
     integer(psb_ipk_), intent(in)    :: id
     character(len=*), intent(in) :: name
-    interface 
+    interface
       function is_legal(i)
         import :: psb_ipk_
         integer(psb_ipk_), intent(in) :: i
@@ -996,7 +1014,7 @@ contains
     end interface
     character(len=20), parameter :: rname='amg_check_def'
 
-    if (.not.is_legal(ip)) then     
+    if (.not.is_legal(ip)) then
       write(0,*)trim(rname),': Error: Illegal value for ',&
            & name,' :',ip, '. defaulting to ',id
       ip = id
@@ -1004,11 +1022,11 @@ contains
   end subroutine amg_icheck_def
 
   subroutine amg_scheck_def(ip,name,id,is_legal)
-    implicit none 
+    implicit none
     real(psb_spk_), intent(inout) :: ip
     real(psb_spk_), intent(in)    :: id
     character(len=*), intent(in) :: name
-    interface 
+    interface
       function is_legal(i)
         use psb_base_mod, only : psb_spk_
         real(psb_spk_), intent(in) :: i
@@ -1017,7 +1035,7 @@ contains
     end interface
     character(len=20), parameter :: rname='amg_check_def'
 
-    if (.not.is_legal(ip)) then     
+    if (.not.is_legal(ip)) then
       write(0,*)trim(rname),': Error: Illegal value for ',&
            & name,' :',ip, '. defaulting to ',id
       ip = id
@@ -1025,11 +1043,11 @@ contains
   end subroutine amg_scheck_def
 
   subroutine amg_dcheck_def(ip,name,id,is_legal)
-    implicit none 
+    implicit none
     real(psb_dpk_), intent(inout) :: ip
     real(psb_dpk_), intent(in)    :: id
     character(len=*), intent(in) :: name
-    interface 
+    interface
       function is_legal(i)
         use psb_base_mod, only : psb_dpk_
         real(psb_dpk_), intent(in) :: i
@@ -1038,7 +1056,7 @@ contains
     end interface
     character(len=20), parameter :: rname='amg_check_def'
 
-    if (.not.is_legal(ip)) then     
+    if (.not.is_legal(ip)) then
       write(0,*)trim(rname),': Error: Illegal value for ',&
            & name,' :',ip, '. defaulting to ',id
       ip = id
@@ -1047,7 +1065,7 @@ contains
 
 
   function pr_to_str(iprec)
-    implicit none 
+    implicit none
 
     integer(psb_ipk_), intent(in)  :: iprec
     character(len=10)     :: pr_to_str
@@ -1055,11 +1073,11 @@ contains
     select case(iprec)
     case(amg_noprec_)
       pr_to_str='NOPREC'
-    case(amg_jac_)         
+    case(amg_jac_)
       pr_to_str='JAC'
-    case(amg_bjac_)         
+    case(amg_bjac_)
       pr_to_str='BJAC'
-    case(amg_as_)      
+    case(amg_as_)
       pr_to_str='AS'
     end select
 
@@ -1067,7 +1085,7 @@ contains
 
   subroutine amg_ml_bcast(ctxt,dat,root)
 
-    implicit none 
+    implicit none
     type(psb_ctxt_type), intent(in) :: ctxt
     type(amg_ml_parms), intent(inout)   :: dat
     integer(psb_ipk_), intent(in), optional :: root
@@ -1089,7 +1107,7 @@ contains
 
   subroutine amg_sml_bcast(ctxt,dat,root)
 
-    implicit none 
+    implicit none
     type(psb_ctxt_type), intent(in) :: ctxt
     type(amg_sml_parms), intent(inout)   :: dat
     integer(psb_ipk_), intent(in), optional :: root
@@ -1100,7 +1118,7 @@ contains
   end subroutine amg_sml_bcast
 
   subroutine amg_dml_bcast(ctxt,dat,root)
-    implicit none 
+    implicit none
     type(psb_ctxt_type), intent(in) :: ctxt
     type(amg_dml_parms), intent(inout)   :: dat
     integer(psb_ipk_), intent(in), optional :: root
@@ -1112,7 +1130,7 @@ contains
 
   subroutine ml_parms_clone(pm,pmout,info)
 
-    implicit none 
+    implicit none
     class(amg_ml_parms), intent(inout) :: pm
     class(amg_ml_parms), intent(out)   :: pmout
     integer(psb_ipk_), intent(out)     :: info
@@ -1132,19 +1150,19 @@ contains
     pmout%coarse_solve   = pm%coarse_solve
 
   end subroutine ml_parms_clone
-  
+
   subroutine s_ml_parms_clone(pm,pmout,info)
 
-    implicit none 
+    implicit none
     class(amg_sml_parms), intent(inout) :: pm
     class(amg_ml_parms), intent(out)   :: pmout
     integer(psb_ipk_), intent(out)     :: info
 
-      
+
     integer(psb_ipk_) :: err_act
     integer(psb_ipk_) :: ierr(5)
     character(len=20)  :: name='clone'
-  
+
     info = 0
     select type(pout => pmout)
     class is (amg_sml_parms)
@@ -1159,21 +1177,21 @@ contains
       call psb_get_erraction(err_act)
       call psb_error_handler(err_act)
     end select
-      
+
   end subroutine s_ml_parms_clone
 
   subroutine d_ml_parms_clone(pm,pmout,info)
 
-    implicit none 
+    implicit none
     class(amg_dml_parms), intent(inout) :: pm
     class(amg_ml_parms), intent(out)   :: pmout
     integer(psb_ipk_), intent(out)     :: info
 
-      
+
     integer(psb_ipk_) :: err_act
     integer(psb_ipk_) :: ierr(5)
     character(len=20)  :: name='clone'
-  
+
     info = 0
     select type(pout => pmout)
     class is (amg_dml_parms)
@@ -1189,13 +1207,13 @@ contains
       call psb_error_handler(err_act)
       return
     end select
-      
+
   end subroutine d_ml_parms_clone
 
   function amg_s_equal_aggregation(parms1, parms2) result(val)
     type(amg_sml_parms), intent(in) :: parms1, parms2
     logical :: val
-    
+
     val  = (parms1%par_aggr_alg     == parms2%par_aggr_alg        ) .and. &
          & (parms1%aggr_type        == parms2%aggr_type       ) .and. &
          & (parms1%aggr_ord         == parms2%aggr_ord        ) .and. &
@@ -1210,7 +1228,7 @@ contains
   function amg_d_equal_aggregation(parms1, parms2) result(val)
     type(amg_dml_parms), intent(in) :: parms1, parms2
     logical :: val
-    
+
     val  = (parms1%par_aggr_alg     == parms2%par_aggr_alg        ) .and. &
          & (parms1%aggr_type        == parms2%aggr_type       ) .and. &
          & (parms1%aggr_ord         == parms2%aggr_ord        ) .and. &
@@ -1221,5 +1239,5 @@ contains
          & (parms1%aggr_omega_val   == parms2%aggr_omega_val  ) .and. &
          & (parms1%aggr_thresh      == parms2%aggr_thresh     )
   end function amg_d_equal_aggregation
-         
+
 end module amg_base_prec_type

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

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   

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   

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   

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   

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   

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   

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   

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   

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   

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

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

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

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_
@@ -424,28 +427,28 @@ 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)
 
     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
 
     ! 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_
 
     call psb_erractionsave(err_act)
@@ -457,9 +460,9 @@ contains
     endif
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) '  Krylov solver (local) '
     end if
     write(iout_,*) '    method: ',sv%method
     write(iout_,*) '     kprec: ',sv%kprec
@@ -478,11 +481,11 @@ contains
 
 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 +493,13 @@ 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 +508,7 @@ 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 +527,21 @@ 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 +557,11 @@ 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 +571,23 @@ 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   

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
@@ -197,7 +198,7 @@ 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 +206,8 @@ 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 +227,11 @@ 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
@@ -255,7 +256,7 @@ module amg_c_onelev_mod
     end subroutine amg_c_base_onelev_build
   end interface
 
-  interface 
+  interface
     subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
@@ -270,127 +271,127 @@ module amg_c_onelev_mod
     end subroutine amg_c_base_onelev_descr
   end interface
 
-  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_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
@@ -398,13 +399,13 @@ 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
@@ -436,7 +437,7 @@ 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
@@ -459,15 +460,15 @@ 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
@@ -479,16 +480,16 @@ 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()
@@ -497,19 +498,19 @@ 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;
@@ -519,10 +520,10 @@ 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
@@ -537,7 +538,7 @@ 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()
@@ -547,7 +548,7 @@ 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
@@ -562,9 +563,9 @@ 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
 
 
@@ -574,7 +575,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine c_base_onelev_update_aggr
 
 
@@ -583,33 +584,33 @@ 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
@@ -622,7 +623,7 @@ 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
@@ -631,12 +632,12 @@ 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
@@ -647,18 +648,18 @@ 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
 
@@ -679,26 +680,26 @@ 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
@@ -711,22 +712,22 @@ 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
@@ -734,17 +735,17 @@ 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
     !
@@ -808,14 +809,14 @@ 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_
@@ -836,7 +837,7 @@ contains
     end if
 
   end subroutine c_wrk_free
-    
+
   subroutine c_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -844,11 +845,11 @@ 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)
@@ -870,12 +871,12 @@ 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)
@@ -888,17 +889,17 @@ 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
@@ -919,7 +920,7 @@ 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
@@ -938,14 +939,14 @@ 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
 
@@ -956,7 +957,7 @@ 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
 
@@ -55,7 +55,7 @@ module amg_c_prec_mod
   use amg_c_ainv_solver
   use amg_c_invk_solver
   use amg_c_invt_solver
-  use amg_c_rkr_solver
+  use amg_c_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_c_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)

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

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   

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   

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

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   

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   

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   

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   

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   

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   

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   

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   

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   

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

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

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

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_
@@ -424,28 +427,28 @@ 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)
 
     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
 
     ! 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_
 
     call psb_erractionsave(err_act)
@@ -457,9 +460,9 @@ contains
     endif
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) '  Krylov solver (local) '
     end if
     write(iout_,*) '    method: ',sv%method
     write(iout_,*) '     kprec: ',sv%kprec
@@ -478,11 +481,11 @@ contains
 
 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 +493,13 @@ 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 +508,7 @@ 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 +527,21 @@ 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 +557,11 @@ 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 +571,23 @@ 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   

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
@@ -197,7 +199,7 @@ 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 +207,8 @@ 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 +228,11 @@ 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
@@ -255,7 +257,7 @@ module amg_d_onelev_mod
     end subroutine amg_d_base_onelev_build
   end interface
 
-  interface 
+  interface
     subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
@@ -270,127 +272,127 @@ module amg_d_onelev_mod
     end subroutine amg_d_base_onelev_descr
   end interface
 
-  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_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
@@ -398,13 +400,13 @@ 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
@@ -436,7 +438,7 @@ 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
@@ -459,15 +461,15 @@ 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
@@ -479,16 +481,16 @@ 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()
@@ -497,19 +499,19 @@ 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;
@@ -519,10 +521,10 @@ 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
@@ -537,7 +539,7 @@ 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()
@@ -547,7 +549,7 @@ 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
@@ -562,9 +564,9 @@ 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
 
 
@@ -574,7 +576,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine d_base_onelev_update_aggr
 
 
@@ -583,33 +585,33 @@ 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
@@ -622,7 +624,7 @@ 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
@@ -631,12 +633,12 @@ 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
@@ -647,18 +649,18 @@ 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
 
@@ -679,26 +681,26 @@ 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
@@ -711,22 +713,22 @@ 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
@@ -734,17 +736,17 @@ 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
     !
@@ -808,14 +810,14 @@ 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_
@@ -836,7 +838,7 @@ contains
     end if
 
   end subroutine d_wrk_free
-    
+
   subroutine d_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -844,11 +846,11 @@ 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)
@@ -870,12 +872,12 @@ 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)
@@ -888,17 +890,17 @@ 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
@@ -919,7 +921,7 @@ 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
@@ -938,14 +940,14 @@ 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
 
@@ -956,7 +958,7 @@ 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 +1,688 @@
+!
+!
+!                             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 dmatchboxp_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
+    integer(psb_ipk_) :: max_csize
+    integer(psb_ipk_) :: max_nlevels
+    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        => d_parmatch_aggr_csetc
+    procedure, pass(ag) :: cseti        => d_parmatch_aggr_cseti
+    procedure, pass(ag) :: default      => d_parmatch_aggr_set_default
+    procedure, pass(ag) :: sizeof       => d_parmatch_aggregator_sizeof
+    procedure, pass(ag) :: update_next  => d_parmatch_aggregator_update_next
+    procedure, pass(ag) :: bld_wnxt     => d_parmatch_bld_wnxt
+    procedure, pass(ag) :: bld_default_w    => d_bld_default_w
+    procedure, pass(ag) :: set_c_default_w  => d_set_prm_c_default_w
+    procedure, pass(ag) :: descr        => d_parmatch_aggregator_descr
+    procedure, pass(ag) :: clone        => d_parmatch_aggregator_clone
+    procedure, pass(ag) :: free         => d_parmatch_aggregator_free
+    procedure, nopass   :: fmt          => 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(in)         :: 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(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_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(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_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(in)         :: 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(out)      :: 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(in)           :: 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(out)        :: 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 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 d_bld_default_w
+
+  subroutine 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 d_set_prm_c_default_w
+
+  subroutine 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 d_parmatch_bld_wnxt
+
+  function d_parmatch_aggregator_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Parallel Matching aggregation"
+  end function 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 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 d_parmatch_aggregator_sizeof
+
+  subroutine  d_parmatch_aggregator_descr(ag,parms,iout,info)
+    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
+
+    write(iout,*) 'Parallel Matching Aggregator'
+    write(iout,*) '   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) '   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info)
+
+    return
+  end subroutine 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  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 d_parmatch_aggregator_update_next
+
+  subroutine 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 d_parmatch_aggr_csetc
+
+  subroutine 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_MAX_CSIZE')
+      ag%max_csize=val
+    case('PRMC_MAX_NLEVELS')
+      ag%max_nlevels=val
+    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 d_parmatch_aggr_cseti
+
+  subroutine 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 d_parmatch_aggr_set_default
+
+  subroutine  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 d_parmatch_aggregator_free
+
+  subroutine  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 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_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
 
@@ -55,7 +55,7 @@ module amg_d_prec_mod
   use amg_d_ainv_solver
   use amg_d_invk_solver
   use amg_d_invt_solver
-  use amg_d_rkr_solver
+  use amg_d_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_d_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)

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

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   

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   

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   

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   

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

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   

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   

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   

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   

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   

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   

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   

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   

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   

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

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

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

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_
@@ -424,28 +427,28 @@ 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)
 
     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
 
     ! 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_
 
     call psb_erractionsave(err_act)
@@ -457,9 +460,9 @@ contains
     endif
 
     if (sv%global) then
-      write(iout_,*) '  Recursive Krylov solver (global)'
+      write(iout_,*) '  Krylov solver (global)'
     else
-      write(iout_,*) '  Recursive Krylov solver (local) '
+      write(iout_,*) '  Krylov solver (local) '
     end if
     write(iout_,*) '    method: ',sv%method
     write(iout_,*) '     kprec: ',sv%kprec
@@ -478,11 +481,11 @@ contains
 
 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 +493,13 @@ 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 +508,7 @@ 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 +527,21 @@ 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 +557,11 @@ 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 +571,23 @@ 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   

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
@@ -197,7 +199,7 @@ 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 +207,8 @@ 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 +228,11 @@ 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
@@ -255,7 +257,7 @@ module amg_s_onelev_mod
     end subroutine amg_s_base_onelev_build
   end interface
 
-  interface 
+  interface
     subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
@@ -270,127 +272,127 @@ module amg_s_onelev_mod
     end subroutine amg_s_base_onelev_descr
   end interface
 
-  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_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
@@ -398,13 +400,13 @@ 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
@@ -436,7 +438,7 @@ 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
@@ -459,15 +461,15 @@ 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
@@ -479,16 +481,16 @@ 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()
@@ -497,19 +499,19 @@ 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;
@@ -519,10 +521,10 @@ 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
@@ -537,7 +539,7 @@ 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()
@@ -547,7 +549,7 @@ 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
@@ -562,9 +564,9 @@ 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
 
 
@@ -574,7 +576,7 @@ contains
     integer(psb_ipk_), intent(out)      :: info
 
     call lv%aggr%update_next(lvnext%aggr,info)
-    
+
   end subroutine s_base_onelev_update_aggr
 
 
@@ -583,33 +585,33 @@ 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
@@ -622,7 +624,7 @@ 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
@@ -631,12 +633,12 @@ 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
@@ -647,18 +649,18 @@ 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
 
@@ -679,26 +681,26 @@ 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
@@ -711,22 +713,22 @@ 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
@@ -734,17 +736,17 @@ 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
     !
@@ -808,14 +810,14 @@ 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_
@@ -836,7 +838,7 @@ contains
     end if
 
   end subroutine s_wrk_free
-    
+
   subroutine s_wrk_clone(wk,wkout,info)
     use psb_base_mod
     Implicit None
@@ -844,11 +846,11 @@ 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)
@@ -870,12 +872,12 @@ 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)
@@ -888,17 +890,17 @@ 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
@@ -919,7 +921,7 @@ 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
@@ -938,14 +940,14 @@ 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
 
@@ -956,7 +958,7 @@ 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 +1,688 @@
+!
+!
+!                             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 smatchboxp_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
+    integer(psb_ipk_) :: max_csize
+    integer(psb_ipk_) :: max_nlevels
+    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        => s_parmatch_aggr_csetc
+    procedure, pass(ag) :: cseti        => s_parmatch_aggr_cseti
+    procedure, pass(ag) :: default      => s_parmatch_aggr_set_default
+    procedure, pass(ag) :: sizeof       => s_parmatch_aggregator_sizeof
+    procedure, pass(ag) :: update_next  => s_parmatch_aggregator_update_next
+    procedure, pass(ag) :: bld_wnxt     => s_parmatch_bld_wnxt
+    procedure, pass(ag) :: bld_default_w    => s_bld_default_w
+    procedure, pass(ag) :: set_c_default_w  => s_set_prm_c_default_w
+    procedure, pass(ag) :: descr        => s_parmatch_aggregator_descr
+    procedure, pass(ag) :: clone        => s_parmatch_aggregator_clone
+    procedure, pass(ag) :: free         => s_parmatch_aggregator_free
+    procedure, nopass   :: fmt          => 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(in)         :: 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(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_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(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_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(in)         :: 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(out)      :: 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(in)           :: 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(out)        :: 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 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 s_bld_default_w
+
+  subroutine 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 s_set_prm_c_default_w
+
+  subroutine 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 s_parmatch_bld_wnxt
+
+  function s_parmatch_aggregator_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Parallel Matching aggregation"
+  end function 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 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 s_parmatch_aggregator_sizeof
+
+  subroutine  s_parmatch_aggregator_descr(ag,parms,iout,info)
+    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
+
+    write(iout,*) 'Parallel Matching Aggregator'
+    write(iout,*) '   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) '   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info)
+
+    return
+  end subroutine 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  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 s_parmatch_aggregator_update_next
+
+  subroutine 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 s_parmatch_aggr_csetc
+
+  subroutine 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_MAX_CSIZE')
+      ag%max_csize=val
+    case('PRMC_MAX_NLEVELS')
+      ag%max_nlevels=val
+    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 s_parmatch_aggr_cseti
+
+  subroutine 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 s_parmatch_aggr_set_default
+
+  subroutine  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 s_parmatch_aggregator_free
+
+  subroutine  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 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_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
 
@@ -55,7 +55,7 @@ module amg_s_prec_mod
   use amg_s_ainv_solver
   use amg_s_invk_solver
   use amg_s_invt_solver
-  use amg_s_rkr_solver
+  use amg_s_krm_solver
 
   interface amg_extprol_bld
     subroutine amg_s_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)

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

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   

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   

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

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   

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   

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

amgprec/amg_z_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   

amgprec/amg_z_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   

amgprec/amg_z_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   

amgprec/amg_z_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   

amgprec/amg_z_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   

amgprec/amg_z_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_z_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   

amgprec/amg_z_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_z_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   

amgprec/amg_z_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_z_inner_mod

amgprec/amg_z_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