Fix input file

This reverts commit a17f503486.

.gitignore

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

Changelog

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

LICENSE

@@ -1,10 +1,10 @@
   
    
-                             AMG4PSBLAS version 1.0
+                             AMG4PSBLAS version 1.1
     Algebraic Multigrid Package
-               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+               based on PSBLAS (Parallel Sparse BLAS version 3.8)
     
-    (C) Copyright 2021
+    (C) Copyright 2022
   
         Salvatore Filippone  
         Pasqua D'Ambra   

Make.inc.in

@@ -75,7 +75,7 @@ CDEFINES=$(AMGCDEFINES)
 AMGFDEFINES=@AMGFDEFINES@ $(PSBFDEFINES)
 FDEFINES=$(AMGFDEFINES)
 
-CXXDEFINES=@AMGCXXDEFINES@
+CXXDEFINES=@AMGCXXDEFINES@ $(PSBCXXDEFINES)
 
 @COMPILERULES@
 

Makefile

@@ -1,10 +1,13 @@
 include Make.inc
 
 
-all:  library 
+all:  objs lib
 
-library: libdir amgp cbnd
-#cbnd
+objs: libdir amgp cbnd
+
+lib:  objs
+	cd amgprec && $(MAKE) lib
+	cd cbind && $(MAKE)  lib
 
 libdir:
 	(if test ! -d lib ; then mkdir lib; fi)
@@ -14,10 +17,11 @@ libdir:
         
 
 amgp:
-	$(MAKE) -C amgprec all
+	cd amgprec && $(MAKE) objs
 cbnd: amgp
-	$(MAKE) -C cbind all
-install: all
+	cd cbind && $(MAKE)  objs
+
+install: lib
 	mkdir -p $(INSTALL_LIBDIR) &&\
 	   $(INSTALL_DATA) lib/*.a  $(INSTALL_LIBDIR)
 	mkdir -p  $(INSTALL_INCLUDEDIR) &&\
@@ -41,14 +45,14 @@ cleanlib:
 	(cd modules; /bin/rm -f *.a *$(.mod) *$(.fh))
 
 veryclean: cleanlib
-	(cd amgprec; make veryclean)
-	(cd samples/simple/fileread; make clean)
-	(cd samples/simple/pdegen; make clean)
-	(cd samples/advanced/fileread; make clean)
-	(cd samples/advanced/pdegen; make clean)
+	(cd amgprec && $(MAKE) veryclean)
+	(cd samples/simple/fileread && $(MAKE) clean)
+	(cd samples/simple/pdegen && $(MAKE) clean)
+	(cd samples/advanced/fileread && $(MAKE) clean)
+	(cd samples/advanced/pdegen && $(MAKE) clean)
 
 check: all
 	make check -C samples/advanced/pdegen
 
 clean:
-	(cd amgprec; make clean)
+	(cd amgprec && $(MAKE) clean)

README.md

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

amgprec/Makefile

@@ -9,9 +9,10 @@ FINCLUDES=$(FMFLAG)$(HERE) $(FMFLAG)$(INCDIR) $(PSBLAS_INCLUDES)
 
 DMODOBJS=amg_d_prec_type.o \
 	amg_d_inner_mod.o amg_d_ilu_solver.o amg_d_diag_solver.o amg_d_jac_smoother.o amg_d_as_smoother.o \
+        amg_d_poly_smoother.o amg_d_poly_coeff_mod.o\
 	amg_d_umf_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o amg_d_id_solver.o\
 	amg_d_base_solver_mod.o amg_d_base_smoother_mod.o amg_d_onelev_mod.o \
-	amg_d_gs_solver.o amg_d_mumps_solver.o \
+	amg_d_gs_solver.o amg_d_mumps_solver.o amg_d_jac_solver.o \
 	amg_d_base_aggregator_mod.o \
 	amg_d_dec_aggregator_mod.o amg_d_symdec_aggregator_mod.o \
 	amg_d_ainv_solver.o amg_d_base_ainv_mod.o \
@@ -20,9 +21,9 @@ DMODOBJS=amg_d_prec_type.o \
 
 SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.o \
 	amg_s_inner_mod.o amg_s_ilu_solver.o amg_s_diag_solver.o amg_s_jac_smoother.o amg_s_as_smoother.o \
-	amg_s_slu_solver.o amg_s_id_solver.o\
+	amg_s_poly_smoother.o amg_s_slu_solver.o amg_s_id_solver.o\
 	amg_s_base_solver_mod.o amg_s_base_smoother_mod.o amg_s_onelev_mod.o  \
-	amg_s_gs_solver.o amg_s_mumps_solver.o \
+	amg_s_gs_solver.o amg_s_mumps_solver.o  amg_s_jac_solver.o \
 	amg_s_base_aggregator_mod.o  \
 	amg_s_dec_aggregator_mod.o amg_s_symdec_aggregator_mod.o \
 	amg_s_ainv_solver.o amg_s_base_ainv_mod.o \
@@ -33,7 +34,7 @@ ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.o \
 	amg_z_inner_mod.o amg_z_ilu_solver.o amg_z_diag_solver.o amg_z_jac_smoother.o amg_z_as_smoother.o \
 	amg_z_umf_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o amg_z_id_solver.o\
 	amg_z_base_solver_mod.o amg_z_base_smoother_mod.o amg_z_onelev_mod.o \
-	amg_z_gs_solver.o amg_z_mumps_solver.o \
+	amg_z_gs_solver.o amg_z_mumps_solver.o  amg_z_jac_solver.o \
 	amg_z_base_aggregator_mod.o  \
 	amg_z_dec_aggregator_mod.o amg_z_symdec_aggregator_mod.o \
 	amg_z_ainv_solver.o amg_z_base_ainv_mod.o \
@@ -43,7 +44,7 @@ CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.o \
 	amg_c_inner_mod.o amg_c_ilu_solver.o amg_c_diag_solver.o amg_c_jac_smoother.o amg_c_as_smoother.o \
 	amg_c_slu_solver.o amg_c_id_solver.o\
 	amg_c_base_solver_mod.o amg_c_base_smoother_mod.o amg_c_onelev_mod.o  \
-	amg_c_gs_solver.o amg_c_mumps_solver.o \
+	amg_c_gs_solver.o amg_c_mumps_solver.o  amg_c_jac_solver.o \
 	amg_c_base_aggregator_mod.o  \
 	amg_c_dec_aggregator_mod.o amg_c_symdec_aggregator_mod.o \
 	amg_c_ainv_solver.o amg_c_base_ainv_mod.o \
@@ -62,17 +63,20 @@ OBJS=$(MODOBJS)
 LOCAL_MODS=$(MODOBJS:.o=$(.mod))
 LIBNAME=libamg_prec.a
 
-all: lib impld
+all: objs impld
 
-impld: $(OBJS)
-	$(MAKE) -C impl
+objs: $(OBJS)
+	/bin/cp -p amg_const.h $(INCDIR)
+	/bin/cp -p *$(.mod) $(MODDIR)
+
+impld: objs
+	cd impl && $(MAKE) 
 
 lib: $(OBJS) impld
+	cd impl && $(MAKE) lib
 	$(AR) $(HERE)/$(LIBNAME) $(OBJS)
 	$(RANLIB) $(HERE)/$(LIBNAME)
 	/bin/cp -p $(HERE)/$(LIBNAME) $(LIBDIR)
-	/bin/cp -p amg_const.h $(INCDIR)
-	/bin/cp -p *$(.mod) $(MODDIR)
 
 
 $(MODOBJS): $(PSBLAS_MODDIR)/$(PSBBASEMODNAME)$(.mod)
@@ -152,7 +156,7 @@ amg_z_base_ainv_mod.o: amg_z_base_solver_mod.o amg_base_ainv_mod.o
 amg_s_base_solver_mod.o amg_d_base_solver_mod.o amg_c_base_solver_mod.o amg_z_base_solver_mod.o: amg_base_prec_type.o
 
 amg_d_mumps_solver.o amg_d_gs_solver.o amg_d_id_solver.o amg_d_sludist_solver.o amg_d_slu_solver.o \
-amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
+amg_d_umf_solver.o amg_d_diag_solver.o amg_d_ilu_solver.o amg_d_jac_solver.o: amg_d_base_solver_mod.o  amg_d_prec_type.o
 
 #amg_d_ilu_fact_mod.o: amg_base_prec_type.o  amg_d_base_solver_mod.o
 #amg_d_ilu_solver.o amg_d_iluk_fact.o: amg_d_ilu_fact_mod.o
@@ -161,9 +165,11 @@ amg_d_jac_smoother.o: amg_d_diag_solver.o
 amg_dprecinit.o amg_dprecset.o: amg_d_diag_solver.o amg_d_ilu_solver.o \
 		amg_d_umf_solver.o amg_d_as_smoother.o amg_d_jac_smoother.o \
 	        amg_d_id_solver.o amg_d_slu_solver.o amg_d_sludist_solver.o
+amg_d_poly_smoother.o: amg_d_base_smoother_mod.o amg_d_poly_coeff_mod.o
+amg_s_poly_smoother.o: amg_s_base_smoother_mod.o amg_d_poly_coeff_mod.o	
 
 amg_s_mumps_solver.o amg_s_gs_solver.o amg_s_id_solver.o amg_s_slu_solver.o \
-amg_s_diag_solver.o amg_s_ilu_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
+amg_s_diag_solver.o amg_s_ilu_solver.o amg_s_jac_solver.o: amg_s_base_solver_mod.o  amg_s_prec_type.o
 amg_s_ilu_fact_mod.o: amg_base_prec_type.o  amg_s_base_solver_mod.o
 amg_s_ilu_solver.o amg_s_iluk_fact.o: amg_s_ilu_fact_mod.o
 amg_s_as_smoother.o amg_s_jac_smoother.o: amg_s_base_smoother_mod.o
@@ -173,7 +179,7 @@ amg_sprecinit.o amg_sprecset.o: amg_s_diag_solver.o amg_s_ilu_solver.o \
 	        amg_s_id_solver.o amg_s_slu_solver.o
 
 amg_z_mumps_solver.o amg_z_gs_solver.o amg_z_id_solver.o amg_z_sludist_solver.o amg_z_slu_solver.o \
-amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
+amg_z_umf_solver.o amg_z_diag_solver.o amg_z_ilu_solver.o amg_z_jac_solver.o: amg_z_base_solver_mod.o  amg_z_prec_type.o
 amg_z_ilu_fact_mod.o: amg_base_prec_type.o  amg_z_base_solver_mod.o
 amg_z_ilu_solver.o amg_z_iluk_fact.o: amg_z_ilu_fact_mod.o
 amg_z_as_smoother.o amg_z_jac_smoother.o: amg_z_base_smoother_mod.o
@@ -183,7 +189,7 @@ amg_zprecinit.o amg_zprecset.o: amg_z_diag_solver.o amg_z_ilu_solver.o \
 	        amg_z_id_solver.o amg_z_slu_solver.o amg_z_sludist_solver.o
 
 amg_c_mumps_solver.o amg_c_gs_solver.o amg_c_id_solver.o amg_c_sludist_solver.o amg_c_slu_solver.o \
-amg_c_diag_solver.o amg_c_ilu_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
+amg_c_diag_solver.o amg_c_ilu_solver.o amg_c_jac_solver.o: amg_c_base_solver_mod.o  amg_c_prec_type.o
 amg_c_ilu_fact_mod.o: amg_base_prec_type.o  amg_c_base_solver_mod.o
 amg_c_ilu_solver.o amg_c_iluk_fact.o: amg_c_ilu_fact_mod.o
 amg_c_as_smoother.o amg_c_jac_smoother.o: amg_c_base_smoother_mod.o
@@ -218,4 +224,4 @@ clean: implclean
 	/bin/rm -f $(OBJS) $(LOCAL_MODS) *$(.mod)
 
 implclean:
-	$(MAKE) -C impl clean
+	cd impl && $(MAKE) clean

amgprec/amg_base_prec_type.F90

@@ -64,7 +64,7 @@ module amg_base_prec_type
   !
   use psb_const_mod
   use psb_base_mod, only :&
-       & psb_desc_type, psb_i_vect_type, psb_i_base_vect_type,&
+       & psb_desc_type, psb_ctxt_type,&
        & psb_ipk_, psb_dpk_, psb_spk_, psb_epk_,  &
        & psb_cdfree, psb_halo_, psb_none_, psb_sum_, psb_avg_, &
        & psb_nohalo_, psb_square_root_, psb_toupper, psb_root_,&
@@ -81,10 +81,10 @@ module amg_base_prec_type
   !
   ! Version numbers
   !
-  character(len=*), parameter   :: amg_version_string_ = "1.0.1"
+  character(len=*), parameter   :: amg_version_string_ = "1.1.0"
   integer(psb_ipk_), parameter  :: amg_version_major_  = 1
-  integer(psb_ipk_), parameter  :: amg_version_minor_  = 0
-  integer(psb_ipk_), parameter  :: amg_patchlevel_     = 1
+  integer(psb_ipk_), parameter  :: amg_version_minor_  = 1
+  integer(psb_ipk_), parameter  :: amg_patchlevel_     = 0
 
   type amg_ml_parms
     integer(psb_ipk_) :: sweeps_pre, sweeps_post
@@ -94,6 +94,7 @@ module amg_base_prec_type
     integer(psb_ipk_) :: aggr_omega_alg, aggr_eig, aggr_filter
     integer(psb_ipk_) :: coarse_mat, coarse_solve
   contains
+    procedure, pass(pm) :: get_coarse_mat  => ml_parms_get_coarse_mat
     procedure, pass(pm) :: get_coarse  => ml_parms_get_coarse
     procedure, pass(pm) :: clone       => ml_parms_clone
     procedure, pass(pm) :: descr       => ml_parms_descr
@@ -214,7 +215,8 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_fbgs_     = 6
   integer(psb_ipk_), parameter :: amg_l1_gs_    = 7
   integer(psb_ipk_), parameter :: amg_l1_fbgs_  = 8
-  integer(psb_ipk_), parameter :: amg_max_prec_ = 8
+  integer(psb_ipk_), parameter :: amg_poly_     = 9
+  integer(psb_ipk_), parameter :: amg_max_prec_ = 9
   !
   ! Constants for pre/post signaling. Now only used internally
   !
@@ -232,9 +234,9 @@ module amg_base_prec_type
   integer(psb_ipk_), parameter :: amg_diag_scale_    = amg_slv_delta_+1
   integer(psb_ipk_), parameter :: amg_l1_diag_scale_ = amg_slv_delta_+2
   integer(psb_ipk_), parameter :: amg_gs_            = amg_slv_delta_+3
-  ! !$  integer(psb_ipk_), parameter :: amg_ilu_n_         = amg_slv_delta_+4
-  ! !$  integer(psb_ipk_), parameter :: amg_milu_n_        = amg_slv_delta_+5
-  ! !$  integer(psb_ipk_), parameter :: amg_ilu_t_         = amg_slv_delta_+6
+  integer(psb_ipk_), parameter :: amg_ilu_n_         = amg_slv_delta_+4
+  integer(psb_ipk_), parameter :: amg_milu_n_        = amg_slv_delta_+5
+  integer(psb_ipk_), parameter :: amg_ilu_t_         = amg_slv_delta_+6
   integer(psb_ipk_), parameter :: amg_slu_           = amg_slv_delta_+7
   integer(psb_ipk_), parameter :: amg_umf_           = amg_slv_delta_+8
   integer(psb_ipk_), parameter :: amg_sludist_       = amg_slv_delta_+9
@@ -286,11 +288,12 @@ module amg_base_prec_type
   !
   ! Legal values for entry: amg_aggr_prol_
   !
-  integer(psb_ipk_), parameter :: amg_no_smooth_   = 0
-  integer(psb_ipk_), parameter :: amg_smooth_prol_ = 1
-  integer(psb_ipk_), parameter :: amg_min_energy_  = 2
+  integer(psb_ipk_), parameter :: amg_no_smooth_      = 0
+  integer(psb_ipk_), parameter :: amg_smooth_prol_    = 1
+  integer(psb_ipk_), parameter :: amg_l1_smooth_prol_ = 2
+  integer(psb_ipk_), parameter :: amg_min_energy_     = 3
   ! Disabling min_energy  for the time being.
-  integer(psb_ipk_), parameter :: amg_max_aggr_prol_=amg_smooth_prol_
+  integer(psb_ipk_), parameter :: amg_max_aggr_prol_= amg_l1_smooth_prol_
   !
   ! Legal values for entry: amg_aggr_filter_
   !
@@ -318,6 +321,16 @@ 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_
+  !
+  ! Legal values for entry: amg_poly_variant_
+  !
+  integer(psb_ipk_), parameter :: amg_cheb_4_     = 0
+  integer(psb_ipk_), parameter :: amg_cheb_4_opt_ = 1
+  integer(psb_ipk_), parameter :: amg_cheb_1_opt_ = 2
+  integer(psb_ipk_), parameter :: amg_poly_dbg_   = 8
+  
+  integer(psb_ipk_), parameter :: amg_poly_rho_est_power_ = 0
+
   !
   ! Legal values for entry: amg_prec_status_
   !
@@ -364,8 +377,8 @@ module amg_base_prec_type
   character(len=19), parameter, private :: &
        &  eigen_estimates(0:0)=(/'infinity norm     '/)
   character(len=15), parameter, private :: &
-       &  aggr_prols(0:3)=(/'unsmoothed    ','smoothed      ',&
-       &           'min energy    ','bizr. smoothed'/)
+       &  aggr_prols(0:4)=(/'unsmoothed    ','smoothed      ',&
+       &  'l1-smoothed   ','min energy    ','bizr. smoothed'/)
   character(len=15), parameter, private :: &
        &  aggr_filters(0:1)=(/'no filtering  ','filtering     '/)
   character(len=15), parameter, private :: &
@@ -389,12 +402,12 @@ module amg_base_prec_type
        &  ml_names(0:7)=(/'none          ','additive      ',&
        &  'multiplicative', 'VCycle        ','WCycle        ',&
        &  'KCycle        ','KCycleSym     ','new ML        '/)
-  character(len=15), parameter :: &
+  character(len=16), parameter :: &
        &  amg_fact_names(0:amg_max_sub_solve_)=(/&
        & 'none          ','Jacobi        ',&
        & 'L1-Jacobi     ','none          ','none          ',&
        & 'none          ','none          ','L1-GS         ',&
-       & 'L1-FBGS       ','none          ','Point Jacobi  ',&
+       & 'L1-FBGS       ','Polynomial    ','none          ','Point Jacobi  ',&
        & 'L1-Jacobi     ','Gauss-Seidel  ','ILU(n)        ',&
        & 'MILU(n)       ','ILU(t,n)      ',&
        & 'SuperLU       ','UMFPACK LU    ',&
@@ -456,12 +469,12 @@ contains
     character(len=*), parameter :: name='amg_stringval'
   ! Local variable
     integer :: index_tab
-    character(len=15) ::string2
+    character(len=128) ::string2
     index_tab=index(string,char(9))
     if (index_tab.NE.0)  then
-       string2=string(1:index_tab-1)
+      string2=string(1:index_tab-1)
     else
-       string2=string
+      string2=string
     endif
     select case(psb_toupper(trim(string2)))
     case('NONE')
@@ -481,11 +494,11 @@ contains
     case('BGS','BWGS')
       val = amg_bwgs_
     case('ILU')
-      val = psb_ilu_n_
+      val = amg_ilu_n_
     case('MILU')
-      val = psb_milu_n_
+      val = amg_milu_n_
     case('ILUT')
-      val = psb_ilu_t_
+      val = amg_ilu_t_
     case('MUMPS')
       val = amg_mumps_
     case('UMF')
@@ -536,6 +549,8 @@ contains
       val = amg_no_smooth_
     case('SMOOTHED')
       val = amg_smooth_prol_
+    case('L1-SMOOTHED','L1SMOOTHED')
+      val = amg_l1_smooth_prol_
     case('MINENERGY')
       val = amg_min_energy_
     case('NOPREC')
@@ -556,6 +571,18 @@ contains
       val = amg_krm_
     case('AS')
       val = amg_as_
+    case('POLY')
+      val = amg_poly_
+    case('CHEB_4')
+      val = amg_cheb_4_
+    case('CHEB_4_OPT')
+      val = amg_cheb_4_opt_
+    case('CHEB_1_OPT')
+      val = amg_cheb_1_opt_
+    case('POLY_DBG')
+      val = amg_poly_dbg_
+    case('POLY_RHO_EST_POWER')
+      val =  amg_poly_rho_est_power_
     case('A_NORMI')
       val = amg_max_norm_
     case('USER_CHOICE')
@@ -577,6 +604,33 @@ contains
     end select
   end function amg_stringval
 
+  function amg_get_coarse_mat_name(val) result(res)
+    character(len=15) :: res
+    integer :: val
+    select case(val)
+    case (0,1)
+      res = matrix_names(val)
+    case default
+      res = 'Unknown '
+    end select
+  end function amg_get_coarse_mat_name
+
+  subroutine amg_warn_coarse_mat(val,expected)
+    integer(psb_ipk_) :: val, expected
+    if (val /= expected) then
+      write(0,*) 'Warning: resetting COARSE_MAT on an existing hierarchy from ',&
+           & amg_get_coarse_mat_name(val), ' to ',amg_get_coarse_mat_name(expected)
+    end if
+  end subroutine amg_warn_coarse_mat
+
+  
+  function  ml_parms_get_coarse_mat(pm) result(res)
+    implicit none
+    class(amg_ml_parms), intent(in)    :: pm
+    integer(psb_ipk_) :: res
+    res   = pm%coarse_mat
+  end function ml_parms_get_coarse_mat
+
   subroutine  ml_parms_get_coarse(pm,pmin)
     implicit none
     class(amg_ml_parms), intent(inout) :: pm
@@ -639,53 +693,62 @@ contains
            &   ml_names(pm%ml_cycle)
       select case (pm%ml_cycle)
       case (amg_add_ml_)
-        write(iout,*) '  Number of smoother sweeps : ',&
+        write(iout,*) '  Number of smoother sweeps/degree : ',&
              & pm%sweeps_pre
       case (amg_mult_ml_,amg_vcycle_ml_, amg_wcycle_ml_, amg_kcycle_ml_, amg_kcyclesym_ml_)
-        write(iout,*) '  Number of smoother sweeps : pre: ',&
+        write(iout,*) '  Number of smoother sweeps/degree : pre: ',&
              &  pm%sweeps_pre ,'  post: ', pm%sweeps_post
       end select
 
     end if
   end subroutine ml_parms_mlcycledsc
 
-  subroutine ml_parms_mldescr(pm,iout,info)
+  subroutine ml_parms_mldescr(pm,iout,info,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
+    class(amg_ml_parms), intent(in)        :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
     info = psb_success_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+    
     if ((pm%ml_cycle>=amg_no_ml_).and.(pm%ml_cycle<=amg_max_ml_cycle_)) then
 
 
-      write(iout,*) '  Parallel aggregation algorithm: ',&
+      write(iout,*) trim(prefix),'  Parallel aggregation algorithm: ',&
            &   par_aggr_alg_names(pm%par_aggr_alg)
-      if (pm%aggr_type>0) write(iout,*) '  Aggregation type: ',&
+      if (pm%aggr_type>0) write(iout,*) trim(prefix),'  Aggregation type: ',&
            & aggr_type_names(pm%aggr_type)
       !if (pm%par_aggr_alg /= amg_ext_aggr_) then
         if ( pm%aggr_ord /= amg_aggr_ord_nat_) &
-             & write(iout,*) '               with initial ordering: ',&
+             & write(iout,*) trim(prefix),'               with initial ordering: ',&
              &   ord_names(pm%aggr_ord)
-        write(iout,*) '  Aggregation prolongator: ', &
+        write(iout,*) trim(prefix),'  Aggregation prolongator: ', &
              &  aggr_prols(pm%aggr_prol)
         if (pm%aggr_prol /= amg_no_smooth_) then
-          write(iout,*) '              with: ', aggr_filters(pm%aggr_filter)
+          write(iout,*) trim(prefix),'              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: ', &
+            write(iout,*) trim(prefix),'  Damping omega computation: spectral radius estimate'
+            write(iout,*) trim(prefix),'  Spectral radius estimate: ', &
                  & eigen_estimates(pm%aggr_eig)
           else if (pm%aggr_omega_alg == amg_user_choice_) then
-            write(iout,*) '  Damping omega computation: user defined value.'
+            write(iout,*) trim(prefix),'  Damping omega computation: user defined value.'
           else
-            write(iout,*) '  Damping omega computation: unknown value in iprcparm!!'
+            write(iout,*) trim(prefix),'  Damping omega computation: unknown value in iprcparm!!'
           end if
         end if
       !end if
     else
-      write(iout,*) '  Multilevel type: Unkonwn value. Something is amiss....',&
+      write(iout,*) trim(prefix),'  Multilevel type: Unkonwn value. Something is amiss....',&
            & pm%ml_cycle
     end if
 
@@ -693,15 +756,16 @@ contains
 
   end subroutine ml_parms_mldescr
 
-  subroutine ml_parms_descr(pm,iout,info,coarse)
+  subroutine ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_ml_parms), intent(in)        :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
     logical :: coarse_
 
     info = psb_success_
@@ -712,7 +776,7 @@ contains
     end if
 
     if (coarse_) then
-      call pm%coarsedescr(iout,info)
+      call pm%coarsedescr(iout,info,prefix=prefix)
     end if
 
     return
@@ -720,81 +784,126 @@ contains
   end subroutine ml_parms_descr
 
 
-  subroutine ml_parms_coarsedescr(pm,iout,info)
+  subroutine ml_parms_coarsedescr(pm,iout,info,prefix)
 
 
     Implicit None
 
     ! Arguments
-    class(amg_ml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
+    class(amg_ml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)         :: iout
+    integer(psb_ipk_), intent(out)        :: info
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-    write(iout,*) '  Coarse matrix: ',&
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix),'  Coarse matrix: ',&
          & matrix_names(pm%coarse_mat)
     select case(pm%coarse_solve)
     case (amg_bjac_,amg_as_)
-      write(iout,*) '  Number of sweeps : ',&
-           & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'Block Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
     case (amg_l1_bjac_)
-      write(iout,*) '  Number of sweeps : ',&
-           & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'L1-Block Jacobi'
-    case (amg_jac_)
-      write(iout,*) '  Number of sweeps : ',&
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
            & pm%sweeps_pre
-      write(iout,*) '  Coarse solver: ',&
+    case (amg_jac_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & 'Point Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_jac_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1-Jacobi'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_fbgs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1 Forward-Backward Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_l1_gs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'L1 Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
+    case (amg_fbgs_)
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
+           & 'Forward-Backward Gauss-Seidel (Hybrid)'
+      write(iout,*) trim(prefix),'  Number of sweeps : ',&
+           & pm%sweeps_pre
     case default
-      write(iout,*) '  Coarse solver: ',&
+      write(iout,*) trim(prefix),'  Coarse solver: ',&
            & amg_fact_names(pm%coarse_solve)
     end select
-
+    
   end subroutine ml_parms_coarsedescr
 
-  subroutine s_ml_parms_descr(pm,iout,info,coarse)
+  subroutine s_ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_sml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_sml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-
-    call pm%amg_ml_parms%descr(iout,info,coarse)
-    if (pm%aggr_prol /= amg_no_smooth_) then
-      write(iout,*) '  Damping omega value  :',pm%aggr_omega_val
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
     end if
-    write(iout,*) '  Aggregation threshold:',pm%aggr_thresh
+
+    call pm%amg_ml_parms%descr(iout,info,coarse,prefix=prefix)
+    if (pm%aggr_prol /= amg_no_smooth_) then
+      write(iout,*) trim(prefix),'  Damping omega value  :',pm%aggr_omega_val
+    end if
+    write(iout,*) trim(prefix),'  Aggregation threshold:',pm%aggr_thresh
 
     return
 
   end subroutine s_ml_parms_descr
 
-  subroutine d_ml_parms_descr(pm,iout,info,coarse)
+  subroutine d_ml_parms_descr(pm,iout,info,coarse,prefix)
 
     Implicit None
 
     ! Arguments
-    class(amg_dml_parms), intent(in) :: pm
-    integer(psb_ipk_), intent(in)             :: iout
-    integer(psb_ipk_), intent(out)            :: info
-    logical, intent(in), optional   :: coarse
+    class(amg_dml_parms), intent(in)       :: pm
+    integer(psb_ipk_), intent(in)          :: iout
+    integer(psb_ipk_), intent(out)         :: info
+    logical, intent(in), optional          :: coarse
+    character(len=*), intent(in), optional :: prefix
+
+    character(1024)  :: prefix_ 
 
     info = psb_success_
-
-    call pm%amg_ml_parms%descr(iout,info,coarse)
-    if (pm%aggr_prol /= amg_no_smooth_) then
-      write(iout,*) '  Damping omega value  :',pm%aggr_omega_val
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
     end if
-    write(iout,*) '  Aggregation threshold:',pm%aggr_thresh
+
+    call pm%amg_ml_parms%descr(iout,info,coarse,prefix=prefix)
+    if (pm%aggr_prol /= amg_no_smooth_) then
+      write(iout,*) trim(prefix),'  Damping omega value  :',pm%aggr_omega_val
+    end if
+    write(iout,*) trim(prefix),'  Aggregation threshold:',pm%aggr_thresh
 
     return
 
@@ -953,8 +1062,8 @@ contains
     integer(psb_ipk_), intent(in) :: ip
     logical             :: is_legal_ilu_fact
 
-    is_legal_ilu_fact = ((ip==psb_ilu_n_).or.&
-         & (ip==psb_milu_n_).or.(ip==psb_ilu_t_))
+    is_legal_ilu_fact = ((ip==amg_ilu_n_).or.&
+         & (ip==amg_milu_n_).or.(ip==amg_ilu_t_))
     return
   end function is_legal_ilu_fact
   function is_legal_d_omega(ip)

amgprec/amg_c_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_c_ainv_solver
     procedure, pass(sv) :: check   => amg_c_ainv_solver_check
     procedure, pass(sv) :: build   => amg_c_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_c_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_c_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_c_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_c_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_c_ainv_solver
     end subroutine amg_c_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_ainv_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_c_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_c_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_c_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_c_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_ainv_solver_descr
   end interface
 

amgprec/amg_c_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine c_as_smoother_default
 
 
-  subroutine c_as_smoother_descr(sm,info,iout,coarse)
+  subroutine c_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_c_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_c_base_aggregator_xt_desc
 
-  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_base_aggregator_descr

amgprec/amg_c_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_c_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_c_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_c_base_smoother_descr
   end interface
   

amgprec/amg_c_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_c_base_solver_mod
   end interface
   
   interface
-    subroutine amg_c_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
            & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, &
            & amg_c_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_c_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_c_base_solver_descr
   end interface 
   

amgprec/amg_c_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_c_dec_aggregator_fmt
   
-  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_dec_aggregator_descr

amgprec/amg_c_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine c_diag_solver_free
 
-  subroutine c_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_c_l1_diag_solver
   
 contains
 
-  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine c_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_c_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine c_gs_solver_free
 
-  subroutine c_gs_solver_descr(sv,info,iout,coarse)
+  subroutine c_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function c_gs_solver_is_iterative
     
-  subroutine c_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine c_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_c_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine c_id_solver_free
 
-  subroutine c_id_solver_descr(sv,info,iout,coarse)
+  subroutine c_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_c_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_c_ilu_solver.f90

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

amgprec/amg_c_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_c_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_caggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_caggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_cspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lpk_, psb_lcspmat_type
       import ::  amg_c_onelev_type, amg_sml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_cspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_c_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_c_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invk_solver_check
     procedure, pass(sv) :: clone   => amg_c_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_c_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_c_invk_solver
     end subroutine amg_c_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invk_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_c_invk_solver
   end interface
 
   interface
-    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_c_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_invk_solver_descr
   end interface
 

amgprec/amg_c_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_c_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_c_invt_solver_check
     procedure, pass(sv) :: clone   => amg_c_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_c_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_c_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_c_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_c_invt_solver
     end subroutine amg_c_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_c_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invt_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_c_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_c_invt_solver
   end interface
 
   interface
-    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_c_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_c_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_c_invt_solver_descr
   end interface

amgprec/amg_c_jac_smoother.f90

@@ -219,12 +219,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_jac_smoother_type, psb_ipk_
       class(amg_c_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_c_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_c_jac_smoother
   end interface
 
   interface
-    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_c_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_c_l1_jac_smoother_type, psb_ipk_
       class(amg_c_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_c_l1_jac_smoother_descr
   end interface
 

amgprec/amg_c_jac_solver.f90

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

amgprec/amg_c_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function c_krm_solver_get_fmt
 
-  subroutine c_krm_solver_descr(sv,info,iout,coarse)
+  subroutine c_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_c_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_c_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_c_mumps_solver.F90

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

amgprec/amg_c_onelev_mod.f90

@@ -187,8 +187,10 @@ module amg_c_onelev_mod
     procedure, pass(lv) :: clone   => c_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_c_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_c_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_c_base_onelev_memory_use
     procedure, pass(lv) :: default => c_base_onelev_default
     procedure, pass(lv) :: free    => amg_c_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_c_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => c_base_onelev_nullify
     procedure, pass(lv) :: check => amg_c_base_onelev_check
     procedure, pass(lv) :: dump  => amg_c_base_onelev_dump
@@ -257,7 +259,7 @@ module amg_c_onelev_mod
   end interface
 
   interface
-    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_c_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
            & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -268,9 +270,27 @@ module amg_c_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_c_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_c_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_c_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_c_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_c_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_c_onelev_type, psb_c_base_vect_type, psb_spk_, &
@@ -284,7 +304,7 @@ module amg_c_onelev_mod
     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, &
@@ -296,6 +316,18 @@ interface
     end subroutine amg_c_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_c_base_onelev_free_smoothers(lv,info)
+      import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &
+           & psb_clinmap_type, psb_spk_, amg_c_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_c_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_c_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_c_base_onelev_check(lv,info)
       import :: psb_cspmat_type, psb_c_vect_type, psb_c_base_vect_type, &

amgprec/amg_c_prec_type.f90

@@ -135,8 +135,11 @@ module amg_c_prec_type
     procedure, pass(prec)               :: build        => amg_cprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_c_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_c_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_c_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_c_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_c_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_cfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_cfile_prec_memory_use
   end type amg_cprec_type
 
   private :: amg_c_dump, amg_c_get_compl,  amg_c_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_c_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_cfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_cfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_cprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_cprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_cfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_cfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_cprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_cprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_cfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_cprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_c_prec_type
     end subroutine amg_c_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_c_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_c_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_c_prec_free
 
+  subroutine amg_c_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_smoothers_free
+
+  subroutine amg_c_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_cprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_c_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_c_hierarchy_free
 
 
   !

amgprec/amg_c_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine c_slu_solver_finalize
 
-  subroutine c_slu_solver_descr(sv,info,iout,coarse)
+  subroutine c_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_c_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_c_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_c_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_c_symdec_aggregator_fmt
   
-  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_c_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_c_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_c_symdec_aggregator_descr

amgprec/amg_d_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_d_ainv_solver
     procedure, pass(sv) :: check   => amg_d_ainv_solver_check
     procedure, pass(sv) :: build   => amg_d_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_d_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_d_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_d_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_d_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_d_ainv_solver
     end subroutine amg_d_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_ainv_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_d_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_d_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_d_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_ainv_solver_descr
   end interface
 

amgprec/amg_d_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine d_as_smoother_default
 
 
-  subroutine d_as_smoother_descr(sm,info,iout,coarse)
+  subroutine d_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_d_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_d_base_aggregator_xt_desc
 
-  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_base_aggregator_descr

amgprec/amg_d_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_d_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_d_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_d_base_smoother_descr
   end interface
   

amgprec/amg_d_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_d_base_solver_mod
   end interface
   
   interface
-    subroutine amg_d_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
            & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
            & amg_d_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_d_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_d_base_solver_descr
   end interface 
   

amgprec/amg_d_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_d_dec_aggregator_fmt
   
-  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_dec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_dec_aggregator_descr

amgprec/amg_d_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine d_diag_solver_free
 
-  subroutine d_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_d_l1_diag_solver
   
 contains
 
-  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine d_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_d_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine d_gs_solver_free
 
-  subroutine d_gs_solver_descr(sv,info,iout,coarse)
+  subroutine d_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function d_gs_solver_is_iterative
     
-  subroutine d_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine d_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_d_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine d_id_solver_free
 
-  subroutine d_id_solver_descr(sv,info,iout,coarse)
+  subroutine d_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_d_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_d_ilu_solver.f90

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

amgprec/amg_d_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_d_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_daggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_daggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_dspmat_type, psb_desc_type, psb_dpk_, psb_ipk_, psb_lpk_, psb_ldspmat_type
       import ::  amg_d_onelev_type, amg_dml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_dspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_d_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_d_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invk_solver_check
     procedure, pass(sv) :: clone   => amg_d_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_d_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_d_invk_solver
     end subroutine amg_d_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invk_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_d_invk_solver
   end interface
 
   interface
-    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_d_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_invk_solver_descr
   end interface
 

amgprec/amg_d_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_d_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_d_invt_solver_check
     procedure, pass(sv) :: clone   => amg_d_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_d_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_d_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_d_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_d_invt_solver
     end subroutine amg_d_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_d_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invt_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_d_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_d_invt_solver
   end interface
 
   interface
-    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_d_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_d_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_d_invt_solver_descr
   end interface

amgprec/amg_d_jac_smoother.f90

@@ -219,12 +219,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_jac_smoother_type, psb_ipk_
       class(amg_d_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_d_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_d_jac_smoother
   end interface
 
   interface
-    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_d_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_d_l1_jac_smoother_type, psb_ipk_
       class(amg_d_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_d_l1_jac_smoother_descr
   end interface
 

amgprec/amg_d_jac_solver.f90

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

amgprec/amg_d_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function d_krm_solver_get_fmt
 
-  subroutine d_krm_solver_descr(sv,info,iout,coarse)
+  subroutine d_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_d_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_d_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_matchboxp_mod.f90

@@ -143,9 +143,10 @@ contains
     type(psb_ld_coo_sparse_mat) :: tmpcoo
     logical  :: display_out_, print_out_, reproducible_
     logical, parameter  :: dump=.false., debug=.false., dump_mate=.false., &
-         & debug_ilaggr=.false., debug_sync=.false.
+         & debug_ilaggr=.false., debug_sync=.false., debug_mate=.false.
     integer(psb_ipk_), save :: idx_bldmtc=-1, idx_phase1=-1, idx_phase2=-1, idx_phase3=-1
     logical, parameter :: do_timings=.true.
+    integer, parameter :: ilaggr_neginit=-1, ilaggr_nonlocal=-2
 
     ictxt = desc_a%get_ctxt()
     call psb_info(ictxt,iam,np)
@@ -187,7 +188,7 @@ contains
     call desc_a%l2gip(ilv,info,owned=.false.)
 
     call psb_geall(ilaggr,desc_a,info)
-    ilaggr = -1
+    ilaggr = ilaggr_neginit
     call psb_geasb(ilaggr,desc_a,info)
     nr = a%get_nrows()
     nc = a%get_ncols()
@@ -213,7 +214,20 @@ contains
       call psb_barrier(ictxt)
       if (iam == 0) write(0,*)' out from buildmatching:', info
     end if
-
+    if (debug_mate) then
+      block
+        integer(psb_lpk_), allocatable :: ckmate(:)
+        allocate(ckmate(nr))
+        ckmate(1:nr) = mate(1:nr)
+        call psb_msort(ckmate(1:nr))
+        do i=1,nr-1
+          if ((ckmate(i)>0) .and. (ckmate(i) == ckmate(i+1))) then
+            write(0,*) iam,' Duplicate mate entry  at',i,' :',ckmate(i)
+          end if
+        end do
+      end block
+    end if
+     
     if (info == 0) then
       if (do_timings) call psb_tic(idx_phase2)
       if (debug_sync) then
@@ -259,7 +273,7 @@ contains
           cycle
         else
 
-          if (ilaggr(k) == -1) then
+          if (ilaggr(k) == ilaggr_neginit) then
 
             wk   = w(k)
             widx = w(idx)
@@ -267,7 +281,7 @@ contains
             nrmagg = wmax*sqrt((wk/wmax)**2+(widx/wmax)**2)
             if (nrmagg > epsilon(nrmagg)) then
               if (idx <= nr) then
-                if (ilaggr(idx) == -1) then
+                if (ilaggr(idx) == ilaggr_neginit) then
                   ! Now, if both vertices are local, the aggregate is local
                   ! (kinda obvious).
                   nlaggr(iam) = nlaggr(iam) + 1
@@ -275,6 +289,9 @@ contains
                   ilaggr(idx) = nlaggr(iam)
                   wtemp(k)    = w(k)/nrmagg
                   wtemp(idx)  = w(idx)/nrmagg
+                else
+                  write(0,*) iam,' Inconsistent mate? ',k,mate(k),idx,&
+                       &mate(idx),ilaggr(idx)
                 end if
                 nlpairs = nlpairs+1
               else if (idx <= nc) then
@@ -294,7 +311,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 else
                   ! Use a statistically unbiased tie-breaking rule,
@@ -309,7 +326,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 end if
               end if
@@ -325,6 +342,12 @@ contains
                 nlsingl     = nlsingl + 1
               end if
             end if
+            if (ilaggr(k) == ilaggr_neginit) then
+              write(0,*) iam,' Error: no update to ',k,mate(k),&
+                   & abs(w(k)),nrmagg,epsilon(nrmagg),wtemp(k)
+            end if
+          else
+            if (ilaggr(k)<0) write(0,*) 'Strange? ',k,ilaggr(k)
           end if
         end if
       end do
@@ -332,7 +355,7 @@ contains
       if (do_timings) call psb_tic(idx_phase3)
 
       ! Ok, now compute offsets, gather halo and fix non-local
-      ! aggregates  (those where ilaggr == -2)
+      ! aggregates  (those where ilaggr == ilaggr_nonlocal)
       call psb_sum(ictxt,nlaggr)
       ntaggr  = sum(nlaggr(0:np-1))
       naggrm1 = sum(nlaggr(0:iam-1))
@@ -347,7 +370,7 @@ contains
       call psb_halo(wtemp,desc_a,info)
       ! Cleanup as yet unmarked entries
       do k=1,nr
-        if (ilaggr(k) == -2) then
+        if (ilaggr(k) == ilaggr_nonlocal) then
           idx = mate(k)
           if (idx > nr) then
             i   = ilaggr(idx)
@@ -359,9 +382,14 @@ contains
           else
             write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
           end if
-        end if
-        if (ilaggr(k) <0) then
-          write(0,*) 'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+        else if (ilaggr(k) <0) then
+          write(0,*) iam,'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+          write(0,*) iam,'         :             : ',nr,nc,mate(k)
+          if (mate(k) <= nr) then
+            write(0,*) iam,'         :             : ',ilaggr(mate(k)),mate(mate(k)),&
+                 & ilv(k),ilv(mate(k)), ilv(mate(mate(k))),ilaggr(mate(mate(k)))
+          end if
+          flush(0)
         end if
       end do
       if (debug_sync) then
@@ -414,7 +442,7 @@ contains
 
       end block
       if (iam == 0) then
-        write(0,*) 'Matching statistics: Unmatched nodes ',&
+        write(0,*) iam,'Matching statistics: Unmatched nodes ',&
              & nunmatched,' Singletons:',nlsingl,' Pairs:',nlpairs
       end if
 

amgprec/amg_d_mumps_solver.F90

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

amgprec/amg_d_onelev_mod.f90

@@ -188,8 +188,10 @@ module amg_d_onelev_mod
     procedure, pass(lv) :: clone   => d_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_d_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_d_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_d_base_onelev_memory_use
     procedure, pass(lv) :: default => d_base_onelev_default
     procedure, pass(lv) :: free    => amg_d_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_d_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => d_base_onelev_nullify
     procedure, pass(lv) :: check => amg_d_base_onelev_check
     procedure, pass(lv) :: dump  => amg_d_base_onelev_dump
@@ -258,7 +260,7 @@ module amg_d_onelev_mod
   end interface
 
   interface
-    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_d_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
            & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -269,9 +271,27 @@ module amg_d_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_d_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_d_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_d_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_d_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_d_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_d_onelev_type, psb_d_base_vect_type, psb_dpk_, &
@@ -285,7 +305,7 @@ module amg_d_onelev_mod
     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, &
@@ -297,6 +317,18 @@ interface
     end subroutine amg_d_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_d_base_onelev_free_smoothers(lv,info)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dlinmap_type, psb_dpk_, amg_d_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_d_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_d_base_onelev_check(lv,info)
       import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &

amgprec/amg_d_parmatch_aggregator_mod.F90

@@ -244,11 +244,12 @@ module amg_d_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_d_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_d_parmatch_unsmth_bld(dol1smoothing,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
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       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
@@ -262,11 +263,12 @@ module amg_d_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_d_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_d_parmatch_smth_bld(dol1smoothing,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
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       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
@@ -390,18 +392,25 @@ contains
 
   end function amg_d_parmatch_aggregator_sizeof
 
-  subroutine  amg_d_parmatch_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none
     class(amg_d_parmatch_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) '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)
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
 
     return
   end subroutine amg_d_parmatch_aggregator_descr

amgprec/amg_d_poly_coeff_mod.f90

@@ -0,0 +1,548 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_coeff_mod
+  use psb_base_mod
+
+  real(psb_dpk_), parameter :: amg_d_poly_a_vect(30) = [ &
+       & 0.3333333333333333_psb_dpk_, &
+       & 0.1805359927403007_psb_dpk_, &
+       & 0.1159278464862213_psb_dpk_, &
+       & 0.0820780659590383_psb_dpk_, &
+       & 0.0618496002413377_psb_dpk_, &
+       & 0.0486605823426062_psb_dpk_, &
+       & 0.0395132986024057_psb_dpk_, &
+       & 0.0328701017544880_psb_dpk_, &
+       & 0.0278702862721800_psb_dpk_, &
+       & 0.0239987409600620_psb_dpk_, &
+       & 0.0209304400432259_psb_dpk_, &
+       & 0.0184513099045066_psb_dpk_, &
+       & 0.0164152586042591_psb_dpk_, &
+       & 0.0147195638076874_psb_dpk_, &
+       & 0.0132901324757843_psb_dpk_, &
+       & 0.0120723317737698_psb_dpk_, &
+       & 0.0110250964606384_psb_dpk_, &
+       & 0.0101170330064859_psb_dpk_, &
+       & 0.0093237789039835_psb_dpk_, &
+       & 0.0086261728849515_psb_dpk_, &
+       & 0.0080089618703679_psb_dpk_, &
+       & 0.0074598709610601_psb_dpk_, &
+       & 0.0069689238144320_psb_dpk_, &
+       & 0.0065279387776372_psb_dpk_, &
+       & 0.0061301503808627_psb_dpk_, &
+       & 0.0057699215598864_psb_dpk_, &
+       & 0.0054425224281914_psb_dpk_, &
+       & 0.0051439584672521_psb_dpk_, &
+       & 0.0048708358327268_psb_dpk_, &
+       & 0.0046202548314912_psb_dpk_ ];
+  
+  real(psb_dpk_), parameter :: amg_d_poly_beta_vect(900) = [ &
+       & 1.1250000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, &
+       & 1.3375312590961856_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0039131042728535_psb_dpk_, 1.0403581118859304_psb_dpk_, &
+       & 1.1486349854625493_psb_dpk_, 1.3826886924100055_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0021293014616472_psb_dpk_, 1.0217371154926094_psb_dpk_, &
+       & 1.0787243319260302_psb_dpk_, 1.1981006529266300_psb_dpk_, &
+       & 1.4132254279168215_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0012851725594023_psb_dpk_, 1.0130429303523338_psb_dpk_, &
+       & 1.0467821512411335_psb_dpk_, 1.1161648941967548_psb_dpk_, &
+       & 1.2382902021844453_psb_dpk_, 1.4352429710674484_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0008346439791242_psb_dpk_, 1.0084394943012289_psb_dpk_, &
+       & 1.0300870776871385_psb_dpk_, 1.0740838409200377_psb_dpk_, &
+       & 1.1503618670736642_psb_dpk_, 1.2711647404613990_psb_dpk_, &
+       & 1.4518665864936395_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0005724663119766_psb_dpk_, 1.0057742766241562_psb_dpk_, &
+       & 1.0205018792294143_psb_dpk_, 1.0501980344456543_psb_dpk_, &
+       & 1.1011557298494106_psb_dpk_, 1.1808604280685657_psb_dpk_, &
+       & 1.2983858538257604_psb_dpk_, 1.4648607315109978_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0004096007283281_psb_dpk_, 1.0041243950610661_psb_dpk_, &
+       & 1.0146021214826659_psb_dpk_, 1.0356111362667175_psb_dpk_, &
+       & 1.0713997252919425_psb_dpk_, 1.1268827371096291_psb_dpk_, &
+       & 1.2078521914072933_psb_dpk_, 1.3212193071674674_psb_dpk_, &
+       & 1.4752964282069962_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0003031222965291_psb_dpk_, 1.0030484066079688_psb_dpk_, &
+       & 1.0107702271538761_psb_dpk_, 1.0261901159764004_psb_dpk_, &
+       & 1.0523172493375519_psb_dpk_, 1.0925574320754976_psb_dpk_, &
+       & 1.1508337666397197_psb_dpk_, 1.2317225087089441_psb_dpk_, &
+       & 1.3406080202445980_psb_dpk_, 1.4838612440701109_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0002305859520939_psb_dpk_, 1.0023167502402850_psb_dpk_, &
+       & 1.0081724539630488_psb_dpk_, 1.0198298656634219_psb_dpk_, &
+       & 1.0395021023532465_psb_dpk_, 1.0696504270054137_psb_dpk_, &
+       & 1.1130575429574259_psb_dpk_, 1.1729087627556418_psb_dpk_, &
+       & 1.2528830057679230_psb_dpk_, 1.3572557991951903_psb_dpk_, &
+       & 1.4910167256413891_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001794720082837_psb_dpk_, 1.0018018913961957_psb_dpk_, &
+       & 1.0063486190730762_psb_dpk_, 1.0153786456630600_psb_dpk_, &
+       & 1.0305694283076039_psb_dpk_, 1.0537601969394355_psb_dpk_, &
+       & 1.0869986259207296_psb_dpk_, 1.1325918309791341_psb_dpk_, &
+       & 1.1931627335817252_psb_dpk_, 1.2717129367511055_psb_dpk_, &
+       & 1.3716933796979953_psb_dpk_, 1.4970841857556243_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001424192155957_psb_dpk_, 1.0014290693262966_psb_dpk_, &
+       & 1.0050302898629815_psb_dpk_, 1.0121691051849540_psb_dpk_, &
+       & 1.0241487434279255_psb_dpk_, 1.0423815888082042_psb_dpk_, &
+       & 1.0684200812870084_psb_dpk_, 1.1039901093675994_psb_dpk_, &
+       & 1.1510274824264566_psb_dpk_, 1.2117181191012512_psb_dpk_, &
+       & 1.2885426486512805_psb_dpk_, 1.3843261938099158_psb_dpk_, &
+       & 1.5022941875736890_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0001149053826193_psb_dpk_, 1.0011524637691460_psb_dpk_, &
+       & 1.0040535733326481_psb_dpk_, 1.0097959057315313_psb_dpk_, &
+       & 1.0194130047299461_psb_dpk_, 1.0340142503543679_psb_dpk_, &
+       & 1.0548059960662932_psb_dpk_, 1.0831142030181304_psb_dpk_, &
+       & 1.1204089166089239_psb_dpk_, 1.1683309565544606_psb_dpk_, &
+       & 1.2287212228823874_psb_dpk_, 1.3036530570781755_psb_dpk_, &
+       & 1.3954681405367855_psb_dpk_, 1.5068164620958386_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000940475075257_psb_dpk_, 1.0009429169634352_psb_dpk_, &
+       & 1.0033144905644482_psb_dpk_, 1.0080029483381612_psb_dpk_, &
+       & 1.0158423625914039_psb_dpk_, 1.0277208331770495_psb_dpk_, &
+       & 1.0445953542283146_psb_dpk_, 1.0675076120612534_psb_dpk_, &
+       & 1.0976009254588965_psb_dpk_, 1.1361385536615733_psb_dpk_, &
+       & 1.1845236142623621_psb_dpk_, 1.2443208730447588_psb_dpk_, &
+       & 1.3172806908339272_psb_dpk_, 1.4053654389356023_psb_dpk_, &
+       & 1.5107787250184523_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000779482817921_psb_dpk_, 1.0007812684725339_psb_dpk_, &
+       & 1.0027448797440124_psb_dpk_, 1.0066229101701514_psb_dpk_, &
+       & 1.0130985883697137_psb_dpk_, 1.0228944832933697_psb_dpk_, &
+       & 1.0367832140998394_psb_dpk_, 1.0555987571989653_psb_dpk_, &
+       & 1.0802484840556024_psb_dpk_, 1.1117260713149764_psb_dpk_, &
+       & 1.1511254343107276_psb_dpk_, 1.1996558461497355_psb_dpk_, &
+       & 1.2586584174494597_psb_dpk_, 1.3296241265666493_psb_dpk_, &
+       & 1.4142136069557629_psb_dpk_, 1.5142789173034623_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000653242183546_psb_dpk_, 1.0006545722939437_psb_dpk_, &
+       & 1.0022987777448662_psb_dpk_, 1.0055432691173583_psb_dpk_, &
+       & 1.0109550075016893_psb_dpk_, 1.0191301541168694_psb_dpk_, &
+       & 1.0307019481191382_psb_dpk_, 1.0463489778000818_psb_dpk_, &
+       & 1.0668039321569163_psb_dpk_, 1.0928629244731740_psb_dpk_, &
+       & 1.1253954850882542_psb_dpk_, 1.1653553270075827_psb_dpk_, &
+       & 1.2137919954743157_psb_dpk_, 1.2718635211544003_psb_dpk_, &
+       & 1.3408502062615073_psb_dpk_, 1.4221696838526183_psb_dpk_, &
+       & 1.5173934027630227_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000552858792859_psb_dpk_, 1.0005538659610900_psb_dpk_, &
+       & 1.0019444166743086_psb_dpk_, 1.0046864301776393_psb_dpk_, &
+       & 1.0092557508630260_psb_dpk_, 1.0161502674772371_psb_dpk_, &
+       & 1.0258958148322650_psb_dpk_, 1.0390523408953256_psb_dpk_, &
+       & 1.0562203973533295_psb_dpk_, 1.0780480145522537_psb_dpk_, &
+       & 1.1052380250439366_psb_dpk_, 1.1385559038570177_psb_dpk_, &
+       & 1.1788381980793483_psb_dpk_, 1.2270016234308427_psb_dpk_, &
+       & 1.2840529112630572_psb_dpk_, 1.3510994958895055_psb_dpk_, &
+       & 1.4293611393851839_psb_dpk_, 1.5201825990516680_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000472036358790_psb_dpk_, 1.0004728102642675_psb_dpk_, &
+       & 1.0016593577469159_psb_dpk_, 1.0039976891368516_psb_dpk_, &
+       & 1.0078911941833455_psb_dpk_, 1.0137601583069535_psb_dpk_, &
+       & 1.0220462561721002_psb_dpk_, 1.0332172281153209_psb_dpk_, &
+       & 1.0477717791157513_psb_dpk_, 1.0662447417325256_psb_dpk_, &
+       & 1.0892125464929936_psb_dpk_, 1.1172990456131733_psb_dpk_, &
+       & 1.1511817386833911_psb_dpk_, 1.1915984520803475_psb_dpk_, &
+       & 1.2393545273929878_psb_dpk_, 1.2953305781018039_psb_dpk_, &
+       & 1.3604908781568688_psb_dpk_, 1.4358924509939206_psb_dpk_, &
+       & 1.5226949329440265_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000406232569254_psb_dpk_, 1.0004068351374691_psb_dpk_, &
+       & 1.0014274431564170_psb_dpk_, 1.0034377175807407_psb_dpk_, &
+       & 1.0067826854070978_psb_dpk_, 1.0118204999571436_psb_dpk_, &
+       & 1.0189259121271075_psb_dpk_, 1.0284938700470616_psb_dpk_, &
+       & 1.0409432748132981_psb_dpk_, 1.0567209210598594_psb_dpk_, &
+       & 1.0763056524407055_psb_dpk_, 1.1002127636100871_psb_dpk_, &
+       & 1.1289986820268283_psb_dpk_, 1.1632659648787138_psb_dpk_, &
+       & 1.2036686486408621_psb_dpk_, 1.2509179912601627_psb_dpk_, &
+       & 1.3057886497146727_psb_dpk_, 1.3691253387497200_psb_dpk_, &
+       & 1.4418500199624611_psb_dpk_, 1.5249696741164267_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000352114440929_psb_dpk_, 1.0003525892395289_psb_dpk_, &
+       & 1.0012368357172980_psb_dpk_, 1.0029777430511673_psb_dpk_, &
+       & 1.0058727830027672_psb_dpk_, 1.0102297507781717_psb_dpk_, &
+       & 1.0163694815733537_psb_dpk_, 1.0246286588536329_psb_dpk_, &
+       & 1.0353627340015590_psb_dpk_, 1.0489489776835172_psb_dpk_, &
+       & 1.0657896841306789_psb_dpk_, 1.0863155505114006_psb_dpk_, &
+       & 1.1109892546943501_psb_dpk_, 1.1403092559728156_psb_dpk_, &
+       & 1.1748138447471401_psb_dpk_, 1.2150854687543668_psb_dpk_, &
+       & 1.2617553651999671_psb_dpk_, 1.3155085300984379_psb_dpk_, &
+       & 1.3770890582780710_psb_dpk_, 1.4473058898645985_psb_dpk_, &
+       & 1.5270390016420912_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000307198714835_psb_dpk_, 1.0003075769178242_psb_dpk_, &
+       & 1.0010787281022711_psb_dpk_, 1.0025963829693492_psb_dpk_, &
+       & 1.0051188625231162_psb_dpk_, 1.0089126974249720_psb_dpk_, &
+       & 1.0142547789760521_psb_dpk_, 1.0214345766593154_psb_dpk_, &
+       & 1.0307564364069204_psb_dpk_, 1.0425419742322541_psb_dpk_, &
+       & 1.0571325804249445_psb_dpk_, 1.0748920501551993_psb_dpk_, &
+       & 1.0962093570737961_psb_dpk_, 1.1215015873309027_psb_dpk_, &
+       & 1.1512170523743910_psb_dpk_, 1.1858385999327761_psb_dpk_, &
+       & 1.2258871437439198_psb_dpk_, 1.2719254338660289_psb_dpk_, &
+       & 1.3245620908078453_psb_dpk_, 1.3844559282498121_psb_dpk_, &
+       & 1.4523205908039656_psb_dpk_, 1.5289295350887884_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000269609460124_psb_dpk_, 1.0002699137181752_psb_dpk_, &
+       & 1.0009464748475532_psb_dpk_, 1.0022775198638552_psb_dpk_, &
+       & 1.0044888368184179_psb_dpk_, 1.0078128087804721_psb_dpk_, &
+       & 1.0124901352066715_psb_dpk_, 1.0187716022931539_psb_dpk_, &
+       & 1.0269199126829005_psb_dpk_, 1.0372115852204526_psb_dpk_, &
+       & 1.0499389358225151_psb_dpk_, 1.0654121509688057_psb_dpk_, &
+       & 1.0839614658147161_psb_dpk_, 1.1059394594887115_psb_dpk_, &
+       & 1.1317234807654135_psb_dpk_, 1.1617182180038959_psb_dpk_, &
+       & 1.1963584280123116_psb_dpk_, 1.2361118393501820_psb_dpk_, &
+       & 1.2814822465106404_psb_dpk_, 1.3330128124440397_psb_dpk_, &
+       & 1.3912895979940381_psb_dpk_, 1.4569453380258381_psb_dpk_, &
+       & 1.5306634853375161_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000237911597230_psb_dpk_, 1.0002381585998457_psb_dpk_, &
+       & 1.0008349974382460_psb_dpk_, 1.0020088476285827_psb_dpk_, &
+       & 1.0039582343156432_psb_dpk_, 1.0068870298152559_psb_dpk_, &
+       & 1.0110058445931565_psb_dpk_, 1.0165334547611182_psb_dpk_, &
+       & 1.0236982737890488_psb_dpk_, 1.0327398763510158_psb_dpk_, &
+       & 1.0439105824804926_psb_dpk_, 1.0574771105088172_psb_dpk_, &
+       & 1.0737223076000839_psb_dpk_, 1.0929469670793606_psb_dpk_, &
+       & 1.1154717421787756_psb_dpk_, 1.1416391663018148_psb_dpk_, &
+       & 1.1718157904303341_psb_dpk_, 1.2063944488757254_psb_dpk_, &
+       & 1.2457966652063013_psb_dpk_, 1.2904752108716941_psb_dpk_, &
+       & 1.3409168297942540_psb_dpk_, 1.3976451430108305_psb_dpk_, &
+       & 1.4612237483301715_psb_dpk_, 1.5322595309246121_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000210994601235_psb_dpk_, 1.0002111968041199_psb_dpk_, &
+       & 1.0007403694573151_psb_dpk_, 1.0017808593384865_psb_dpk_, &
+       & 1.0035081686576977_psb_dpk_, 1.0061021720448531_psb_dpk_, &
+       & 1.0097482505685551_psb_dpk_, 1.0146384533048582_psb_dpk_, &
+       & 1.0209726922414943_psb_dpk_, 1.0289599764553270_psb_dpk_, &
+       & 1.0388196916802268_psb_dpk_, 1.0507829315895938_psb_dpk_, &
+       & 1.0650938873538003_psb_dpk_, 1.0820113022982043_psb_dpk_, &
+       & 1.1018099987843295_psb_dpk_, 1.1247824847650900_psb_dpk_, &
+       & 1.1512406478277994_psb_dpk_, 1.1815175449359154_psb_dpk_, &
+       & 1.2159692965153148_psb_dpk_, 1.2549770940040335_psb_dpk_, &
+       & 1.2989493304988182_psb_dpk_, 1.3483238646890843_psb_dpk_, &
+       & 1.4035704288718982_psb_dpk_, 1.4651931924923849_psb_dpk_, &
+       & 1.5337334933563860_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000187989989242_psb_dpk_, 1.0001881567984481_psb_dpk_, &
+       & 1.0006595227084085_psb_dpk_, 1.0015861311895899_psb_dpk_, &
+       & 1.0031239047778964_psb_dpk_, 1.0054323694760092_psb_dpk_, &
+       & 1.0086755868504005_psb_dpk_, 1.0130231071421940_psb_dpk_, &
+       & 1.0186509477893992_psb_dpk_, 1.0257426018654052_psb_dpk_, &
+       & 1.0344900810652515_psb_dpk_, 1.0450949980170887_psb_dpk_, &
+       & 1.0577696928624343_psb_dpk_, 1.0727384092356933_psb_dpk_, &
+       & 1.0902385249817814_psb_dpk_, 1.1105218431816117_psb_dpk_, &
+       & 1.1338559493090710_psb_dpk_, 1.1605256406217599_psb_dpk_, &
+       & 1.1908344341913664_psb_dpk_, 1.2251061603103259_psb_dpk_, &
+       & 1.2636866483695495_psb_dpk_, 1.3069455126904677_psb_dpk_, &
+       & 1.3552780462128098_psb_dpk_, 1.4091072303921326_psb_dpk_, &
+       & 1.4688858701459975_psb_dpk_, 1.5350988632115488_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000168211938973_psb_dpk_, 1.0001683505351420_psb_dpk_, &
+       & 1.0005900360142315_psb_dpk_, 1.0014188084960041_psb_dpk_, &
+       & 1.0027938311393803_psb_dpk_, 1.0048572584314193_psb_dpk_, &
+       & 1.0077550080990554_psb_dpk_, 1.0116375492127350_psb_dpk_, &
+       & 1.0166607098595459_psb_dpk_, 1.0229865078405374_psb_dpk_, &
+       & 1.0307840079371537_psb_dpk_, 1.0402302093961155_psb_dpk_, &
+       & 1.0515109674005423_psb_dpk_, 1.0648219524284319_psb_dpk_, &
+       & 1.0803696515480321_psb_dpk_, 1.0983724158638981_psb_dpk_, &
+       & 1.1190615585080472_psb_dpk_, 1.1426825077681895_psb_dpk_, &
+       & 1.1694960201606786_psb_dpk_, 1.1997794584895700_psb_dpk_, &
+       & 1.2338281401870808_psb_dpk_, 1.2719567615042522_psb_dpk_, &
+       & 1.3145009034164739_psb_dpk_, 1.3618186254259919_psb_dpk_, &
+       & 1.4142921537855777_psb_dpk_, 1.4723296710339275_psb_dpk_, &
+       & 1.5363672141264497_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000151113991291_psb_dpk_, 1.0001512299115287_psb_dpk_, &
+       & 1.0005299814085029_psb_dpk_, 1.0012742317597600_psb_dpk_, &
+       & 1.0025087130476142_psb_dpk_, 1.0043606572645858_psb_dpk_, &
+       & 1.0069604400315522_psb_dpk_, 1.0104422369100252_psb_dpk_, &
+       & 1.0149446949285030_psb_dpk_, 1.0206116219981500_psb_dpk_, &
+       & 1.0275926969588451_psb_dpk_, 1.0360442030716124_psb_dpk_, &
+       & 1.0461297878595799_psb_dpk_, 1.0580212522952626_psb_dpk_, &
+       & 1.0718993724396861_psb_dpk_, 1.0879547567564958_psb_dpk_, &
+       & 1.1063887424550545_psb_dpk_, 1.1274143343577541_psb_dpk_, &
+       & 1.1512571899424711_psb_dpk_, 1.1781566543781672_psb_dpk_, &
+       & 1.2083668495540898_psb_dpk_, 1.2421578212983135_psb_dpk_, &
+       & 1.2798167491932815_psb_dpk_, 1.3216492236219661_psb_dpk_, &
+       & 1.3679805949228399_psb_dpk_, 1.4191573997915068_psb_dpk_, &
+       & 1.4755488703473389_psb_dpk_, 1.5375485315807513_psb_dpk_, &
+       & 0.0000000000000000_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000136257096588_psb_dpk_, 1.0001363546506836_psb_dpk_, &
+       & 1.0004778107488095_psb_dpk_, 1.0011486612681773_psb_dpk_, &
+       & 1.0022611433613271_psb_dpk_, 1.0039295964948667_psb_dpk_, &
+       & 1.0062710027404669_psb_dpk_, 1.0094055369479136_psb_dpk_, &
+       & 1.0134571288503909_psb_dpk_, 1.0185540391932908_psb_dpk_, &
+       & 1.0248294520252528_psb_dpk_, 1.0324220853457433_psb_dpk_, &
+       & 1.0414768223656390_psb_dpk_, 1.0521453657079123_psb_dpk_, &
+       & 1.0645869169533493_psb_dpk_, 1.0789688840227822_psb_dpk_, &
+       & 1.0954676189818162_psb_dpk_, 1.1142691889576817_psb_dpk_, &
+       & 1.1355701829701565_psb_dpk_, 1.1595785576006521_psb_dpk_, &
+       & 1.1865145245551894_psb_dpk_, 1.2166114833191515_psb_dpk_, &
+       & 1.2501170022543431_psb_dpk_, 1.2872938516530203_psb_dpk_, &
+       & 1.3284210924391027_psb_dpk_, 1.3737952243949607_psb_dpk_, &
+       & 1.4237313979931023_psb_dpk_, 1.4785646941265451_psb_dpk_, &
+       & 1.5386514762605854_psb_dpk_, 0.0000000000000000_psb_dpk_, &
+       & 1.0000123285767939_psb_dpk_, 1.0001233683396147_psb_dpk_, &
+       & 1.0004322711781202_psb_dpk_, 1.0010390719329101_psb_dpk_, &
+       & 1.0020451337350940_psb_dpk_, 1.0035535979966428_psb_dpk_, &
+       & 1.0056698406248343_psb_dpk_, 1.0085019360540697_psb_dpk_, &
+       & 1.0121611307132341_psb_dpk_, 1.0167623275769953_psb_dpk_, &
+       & 1.0224245834847208_psb_dpk_, 1.0292716209515502_psb_dpk_, &
+       & 1.0374323562422998_psb_dpk_, 1.0470414455308106_psb_dpk_, &
+       & 1.0582398510249318_psb_dpk_, 1.0711754290010183_psb_dpk_, &
+       & 1.0860035417614331_psb_dpk_, 1.1028876956049132_psb_dpk_, &
+       & 1.1220002069820316_psb_dpk_, 1.1435228990979547_psb_dpk_, &
+       & 1.1676478313209715_psb_dpk_, 1.1945780638597872_psb_dpk_, &
+       & 1.2245284602839432_psb_dpk_, 1.2577265305821996_psb_dpk_, &
+       & 1.2944133175813315_psb_dpk_, 1.3348443296857557_psb_dpk_, &
+       & 1.3792905230439911_psb_dpk_, 1.4280393364047606_psb_dpk_, &
+       & 1.4813957820911738_psb_dpk_, 1.5396835966986973_psb_dpk_ ]
+
+
+
+
+!!$  [1.1250000000000000_psb_dpk_, 0.0_psb_dpk_, 0.0_psb_dpk__psb_dpk_,,&
+!!$       & 1.0238728757031315_psb_dpk_, 1.2640890537108553_psb_dpk_,  0.0_psb_dpk_,&
+!!$       & 1.0084254478202830_psb_dpk_, 1.0886783920873087_psb_dpk_, 1.3375312590961856_psb_dpk_]
+
+  real(psb_dpk_), parameter  :: amg_d_poly_beta_mat(30,30)=reshape(amg_d_poly_beta_vect,[30,30])
+
+end module amg_d_poly_coeff_mod

amgprec/amg_d_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_d_poly_smoother_mod.f90
+!
+! Module: amg_d_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_d_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_d_poly_smoother
+  use amg_d_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_d_base_smoother_type) :: amg_d_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_d_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_dspmat_type), pointer :: pa => null()
+    real(psb_dpk_), allocatable    :: poly_beta(:)
+    real(psb_dpk_)                 :: cf_a = dzero
+    real(psb_dpk_)                 :: rho_ba = -done
+  contains
+    procedure, pass(sm) :: apply_v => amg_d_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_d_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_d_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_d_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_d_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_d_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_d_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_d_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => d_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_d_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_d_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_d_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_d_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => d_poly_smoother_sizeof
+    procedure, pass(sm) :: default => d_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => d_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => d_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => d_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => d_poly_smoother_get_id
+  end type amg_d_poly_smoother_type
+  private :: d_poly_smoother_free, &
+       & d_poly_smoother_sizeof,  d_poly_smoother_get_nzeros, &
+       & d_poly_smoother_get_fmt, d_poly_smoother_get_id, &
+       & d_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_d_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      type(psb_d_vect_type),intent(inout)           :: x
+      type(psb_d_vect_type),intent(inout)           :: y
+      real(psb_dpk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_dpk_),target, intent(inout)           :: work(:)
+      type(psb_d_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_d_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_d_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_d_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+!!$           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_d_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_dpk_),intent(inout)         :: x(:)
+!!$      real(psb_dpk_),intent(inout)         :: y(:)
+!!$      real(psb_dpk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_dpk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_dpk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_d_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_d_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_d_poly_smoother_type, psb_d_vect_type, psb_dpk_, &
+           & psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & psb_d_base_sparse_mat, psb_d_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_d_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_d_base_sparse_mat), intent(in), optional :: amold
+      class(psb_d_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_d_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_d_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_clear_data(sm,info)
+      import :: amg_d_poly_smoother_type, psb_dpk_, &
+           & amg_d_base_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_d_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_d_poly_smoother_type, psb_ipk_
+      class(amg_d_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_d_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_d_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_dspmat_type, psb_d_vect_type, psb_d_base_vect_type, &
+           & psb_dpk_, amg_d_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_d_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_dpk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_d_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine d_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='d_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine d_poly_smoother_free
+
+  function d_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function d_poly_smoother_sizeof
+
+  subroutine d_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -done
+    sm%variant      = amg_cheb_4_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine d_poly_smoother_default
+
+  function d_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_d_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function d_poly_smoother_get_nzeros
+
+  function d_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_d_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function d_poly_smoother_get_wrksize
+
+  function d_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function d_poly_smoother_get_fmt
+
+  function d_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function d_poly_smoother_get_id
+
+
+end module amg_d_poly_smoother

amgprec/amg_d_prec_type.f90

@@ -135,8 +135,11 @@ module amg_d_prec_type
     procedure, pass(prec)               :: build        => amg_dprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_d_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_d_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_d_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_d_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_d_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_dfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_dfile_prec_memory_use
   end type amg_dprec_type
 
   private :: amg_d_dump, amg_d_get_compl,  amg_d_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_d_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_dfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_dfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_dprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_dprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_dfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_dfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_dprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_dprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_dfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_dprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_d_prec_type
     end subroutine amg_d_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_d_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_d_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_d_prec_free
 
+  subroutine amg_d_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_smoothers_free
+
+  subroutine amg_d_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_dprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_d_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_d_hierarchy_free
 
 
   !

amgprec/amg_d_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine d_slu_solver_finalize
 
-  subroutine d_slu_solver_descr(sv,info,iout,coarse)
+  subroutine d_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_sludist_solver.F90

@@ -270,13 +270,13 @@ contains
     ! Local variables
     type(psb_dspmat_type) :: atmp
     type(psb_d_csr_sparse_mat) :: acsr
-    integer(psb_lpk_), allocatable :: gia(:), gja(:)
     type(psb_ctxt_type) :: ctxt
+    integer(psb_lpk_), allocatable :: gia(:), gja(:)
     integer(psb_lpk_) :: lfrst
     integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota, nglob, nzt, npr, npc
     integer(psb_ipk_) :: ifrst, ibcheck
     integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
-    character(len=20) :: name='d_sludist_solver_bld', ch_err
+    character(len=20)  :: name='d_sludist_solver_bld', ch_err
     
     info=psb_success_
     call psb_erractionsave(err_act)
@@ -325,7 +325,6 @@ contains
     acsr%ja(:)  = acsr%ja(:)  - 1
     acsr%irp(:) = acsr%irp(:) - 1
     ifrst = lfrst - 1
-    
     info = amg_dsludist_fact(nglob,nrow_a,nztota,ifrst,&
          & acsr%val,acsr%irp,acsr%ja,sv%lufactors,&
          & npr,npc)
@@ -422,15 +421,16 @@ contains
   
   end subroutine d_sludist_solver_finalize
 
-  subroutine d_sludist_solver_descr(sv,info,iout,coarse)
+  subroutine d_sludist_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_sludist_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                           :: info
+    integer, intent(in), optional                  :: iout
+    logical, intent(in), optional                  :: coarse
+    character(len=*), intent(in), optional         :: prefix
 
     ! Local variables
     integer      :: err_act
@@ -438,6 +438,7 @@ contains
     integer      :: me, np
     character(len=20), parameter :: name='amg_d_sludist_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -446,8 +447,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU_Dist Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU_Dist Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_d_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_d_symdec_aggregator_fmt
   
-  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_d_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_d_symdec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_d_symdec_aggregator_descr

amgprec/amg_d_umf_solver.F90

@@ -390,20 +390,22 @@ contains
   
   end subroutine d_umf_solver_finalize
 
-  subroutine d_umf_solver_descr(sv,info,iout,coarse)
+  subroutine d_umf_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_d_umf_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_d_umf_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -412,8 +414,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  UMFPACK Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  UMFPACK Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_s_ainv_solver
     procedure, pass(sv) :: check   => amg_s_ainv_solver_check
     procedure, pass(sv) :: build   => amg_s_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_s_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_s_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_s_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_s_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_s_ainv_solver
     end subroutine amg_s_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_ainv_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_s_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_s_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_s_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_s_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_ainv_solver_descr
   end interface
 

amgprec/amg_s_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine s_as_smoother_default
 
 
-  subroutine s_as_smoother_descr(sm,info,iout,coarse)
+  subroutine s_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_s_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_s_base_aggregator_xt_desc
 
-  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_base_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_base_aggregator_descr

amgprec/amg_s_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_s_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_s_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_s_base_smoother_descr
   end interface
   

amgprec/amg_s_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_s_base_solver_mod
   end interface
   
   interface
-    subroutine amg_s_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
            & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
            & amg_s_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_s_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_s_base_solver_descr
   end interface 
   

amgprec/amg_s_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_s_dec_aggregator_fmt
   
-  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_dec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_dec_aggregator_descr

amgprec/amg_s_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine s_diag_solver_free
 
-  subroutine s_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_s_l1_diag_solver
   
 contains
 
-  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine s_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_s_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine s_gs_solver_free
 
-  subroutine s_gs_solver_descr(sv,info,iout,coarse)
+  subroutine s_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function s_gs_solver_is_iterative
     
-  subroutine s_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine s_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_s_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine s_id_solver_free
 
-  subroutine s_id_solver_descr(sv,info,iout,coarse)
+  subroutine s_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_s_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_s_ilu_solver.f90

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

amgprec/amg_s_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_s_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_saggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_saggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_sspmat_type, psb_desc_type, psb_spk_, psb_ipk_, psb_lpk_, psb_lsspmat_type
       import ::  amg_s_onelev_type, amg_sml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_sspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_s_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_s_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invk_solver_check
     procedure, pass(sv) :: clone   => amg_s_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_s_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_s_invk_solver
     end subroutine amg_s_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invk_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_s_invk_solver
   end interface
 
   interface
-    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_s_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_invk_solver_descr
   end interface
 

amgprec/amg_s_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_s_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_s_invt_solver_check
     procedure, pass(sv) :: clone   => amg_s_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_s_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_s_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_s_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_s_invt_solver
     end subroutine amg_s_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_s_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invt_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_s_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_s_invt_solver
   end interface
 
   interface
-    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_spk_, amg_s_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_s_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_s_invt_solver_descr
   end interface

amgprec/amg_s_jac_smoother.f90

@@ -219,12 +219,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_jac_smoother_type, psb_ipk_
       class(amg_s_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_s_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_s_jac_smoother
   end interface
 
   interface
-    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_s_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_s_l1_jac_smoother_type, psb_ipk_
       class(amg_s_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_s_l1_jac_smoother_descr
   end interface
 

amgprec/amg_s_jac_solver.f90

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

amgprec/amg_s_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function s_krm_solver_get_fmt
 
-  subroutine s_krm_solver_descr(sv,info,iout,coarse)
+  subroutine s_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_s_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_s_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_matchboxp_mod.f90

@@ -143,9 +143,10 @@ contains
     type(psb_ls_coo_sparse_mat) :: tmpcoo
     logical  :: display_out_, print_out_, reproducible_
     logical, parameter  :: dump=.false., debug=.false., dump_mate=.false., &
-         & debug_ilaggr=.false., debug_sync=.false.
+         & debug_ilaggr=.false., debug_sync=.false., debug_mate=.false.
     integer(psb_ipk_), save :: idx_bldmtc=-1, idx_phase1=-1, idx_phase2=-1, idx_phase3=-1
     logical, parameter :: do_timings=.true.
+    integer, parameter :: ilaggr_neginit=-1, ilaggr_nonlocal=-2
 
     ictxt = desc_a%get_ctxt()
     call psb_info(ictxt,iam,np)
@@ -187,7 +188,7 @@ contains
     call desc_a%l2gip(ilv,info,owned=.false.)
 
     call psb_geall(ilaggr,desc_a,info)
-    ilaggr = -1
+    ilaggr = ilaggr_neginit
     call psb_geasb(ilaggr,desc_a,info)
     nr = a%get_nrows()
     nc = a%get_ncols()
@@ -213,7 +214,20 @@ contains
       call psb_barrier(ictxt)
       if (iam == 0) write(0,*)' out from buildmatching:', info
     end if
-
+    if (debug_mate) then
+      block
+        integer(psb_lpk_), allocatable :: ckmate(:)
+        allocate(ckmate(nr))
+        ckmate(1:nr) = mate(1:nr)
+        call psb_msort(ckmate(1:nr))
+        do i=1,nr-1
+          if ((ckmate(i)>0) .and. (ckmate(i) == ckmate(i+1))) then
+            write(0,*) iam,' Duplicate mate entry  at',i,' :',ckmate(i)
+          end if
+        end do
+      end block
+    end if
+     
     if (info == 0) then
       if (do_timings) call psb_tic(idx_phase2)
       if (debug_sync) then
@@ -259,7 +273,7 @@ contains
           cycle
         else
 
-          if (ilaggr(k) == -1) then
+          if (ilaggr(k) == ilaggr_neginit) then
 
             wk   = w(k)
             widx = w(idx)
@@ -267,7 +281,7 @@ contains
             nrmagg = wmax*sqrt((wk/wmax)**2+(widx/wmax)**2)
             if (nrmagg > epsilon(nrmagg)) then
               if (idx <= nr) then
-                if (ilaggr(idx) == -1) then
+                if (ilaggr(idx) == ilaggr_neginit) then
                   ! Now, if both vertices are local, the aggregate is local
                   ! (kinda obvious).
                   nlaggr(iam) = nlaggr(iam) + 1
@@ -275,6 +289,9 @@ contains
                   ilaggr(idx) = nlaggr(iam)
                   wtemp(k)    = w(k)/nrmagg
                   wtemp(idx)  = w(idx)/nrmagg
+                else
+                  write(0,*) iam,' Inconsistent mate? ',k,mate(k),idx,&
+                       &mate(idx),ilaggr(idx)
                 end if
                 nlpairs = nlpairs+1
               else if (idx <= nc) then
@@ -294,7 +311,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 else
                   ! Use a statistically unbiased tie-breaking rule,
@@ -309,7 +326,7 @@ contains
                     ilaggr(k)   = nlaggr(iam)
                     nlpairs = nlpairs+1
                   else
-                    ilaggr(k) = -2
+                    ilaggr(k) = ilaggr_nonlocal
                   end if
                 end if
               end if
@@ -325,6 +342,12 @@ contains
                 nlsingl     = nlsingl + 1
               end if
             end if
+            if (ilaggr(k) == ilaggr_neginit) then
+              write(0,*) iam,' Error: no update to ',k,mate(k),&
+                   & abs(w(k)),nrmagg,epsilon(nrmagg),wtemp(k)
+            end if
+          else
+            if (ilaggr(k)<0) write(0,*) 'Strange? ',k,ilaggr(k)
           end if
         end if
       end do
@@ -332,7 +355,7 @@ contains
       if (do_timings) call psb_tic(idx_phase3)
 
       ! Ok, now compute offsets, gather halo and fix non-local
-      ! aggregates  (those where ilaggr == -2)
+      ! aggregates  (those where ilaggr == ilaggr_nonlocal)
       call psb_sum(ictxt,nlaggr)
       ntaggr  = sum(nlaggr(0:np-1))
       naggrm1 = sum(nlaggr(0:iam-1))
@@ -347,7 +370,7 @@ contains
       call psb_halo(wtemp,desc_a,info)
       ! Cleanup as yet unmarked entries
       do k=1,nr
-        if (ilaggr(k) == -2) then
+        if (ilaggr(k) == ilaggr_nonlocal) then
           idx = mate(k)
           if (idx > nr) then
             i   = ilaggr(idx)
@@ -359,9 +382,14 @@ contains
           else
             write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
           end if
-        end if
-        if (ilaggr(k) <0) then
-          write(0,*) 'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+        else if (ilaggr(k) <0) then
+          write(0,*) iam,'Matchboxp: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
+          write(0,*) iam,'         :             : ',nr,nc,mate(k)
+          if (mate(k) <= nr) then
+            write(0,*) iam,'         :             : ',ilaggr(mate(k)),mate(mate(k)),&
+                 & ilv(k),ilv(mate(k)), ilv(mate(mate(k))),ilaggr(mate(mate(k)))
+          end if
+          flush(0)
         end if
       end do
       if (debug_sync) then
@@ -414,7 +442,7 @@ contains
 
       end block
       if (iam == 0) then
-        write(0,*) 'Matching statistics: Unmatched nodes ',&
+        write(0,*) iam,'Matching statistics: Unmatched nodes ',&
              & nunmatched,' Singletons:',nlsingl,' Pairs:',nlpairs
       end if
 

amgprec/amg_s_mumps_solver.F90

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

amgprec/amg_s_onelev_mod.f90

@@ -188,8 +188,10 @@ module amg_s_onelev_mod
     procedure, pass(lv) :: clone   => s_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_s_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_s_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_s_base_onelev_memory_use
     procedure, pass(lv) :: default => s_base_onelev_default
     procedure, pass(lv) :: free    => amg_s_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_s_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => s_base_onelev_nullify
     procedure, pass(lv) :: check => amg_s_base_onelev_check
     procedure, pass(lv) :: dump  => amg_s_base_onelev_dump
@@ -258,7 +260,7 @@ module amg_s_onelev_mod
   end interface
 
   interface
-    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_s_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
            & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -269,9 +271,27 @@ module amg_s_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_s_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_s_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_s_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_s_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_s_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_s_onelev_type, psb_s_base_vect_type, psb_spk_, &
@@ -285,7 +305,7 @@ module amg_s_onelev_mod
     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, &
@@ -297,6 +317,18 @@ interface
     end subroutine amg_s_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_s_base_onelev_free_smoothers(lv,info)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_slinmap_type, psb_spk_, amg_s_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_s_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_s_base_onelev_check(lv,info)
       import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &

amgprec/amg_s_parmatch_aggregator_mod.F90

@@ -244,11 +244,12 @@ module amg_s_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_s_parmatch_unsmth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_s_parmatch_unsmth_bld(dol1smoothing,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
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       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
@@ -262,11 +263,12 @@ module amg_s_parmatch_aggregator_mod
   end interface
 
   interface
-    subroutine amg_s_parmatch_smth_bld(ag,a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_s_parmatch_smth_bld(dol1smoothing,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
+      integer(psb_ipk_), intent(in) :: dol1smoothing
       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
@@ -390,18 +392,25 @@ contains
 
   end function amg_s_parmatch_aggregator_sizeof
 
-  subroutine  amg_s_parmatch_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_parmatch_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none
     class(amg_s_parmatch_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) '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)
+    write(iout,*) trim(prefix_),' ','Parallel Matching Aggregator'
+    write(iout,*) trim(prefix_),' ','   Number of matching  sweeps: ',ag%n_sweeps
+    write(iout,*) trim(prefix_),' ','   Matching algorithm         : MatchBoxP (PREIS)'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
 
     return
   end subroutine amg_s_parmatch_aggregator_descr

amgprec/amg_s_poly_smoother.f90

@@ -0,0 +1,374 @@
+!
+!
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!
+!    (C) Copyright 2021
+!
+!        Salvatore Filippone
+!        Pasqua D'Ambra
+!        Daniela di Serafino
+!
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!
+!
+!
+! File: amg_s_poly_smoother_mod.f90
+!
+! Module: amg_s_poly_smoother_mod
+!
+!  This module defines:
+!    the amg_s_poly_smoother_type data structure containing the
+!    smoother for a Jacobi/block Jacobi smoother.
+!  The smoother stores in ND the block off-diagonal matrix.
+!  One special case is treated separately, when the solver is DIAG or L1-DIAG
+!  then the ND is the entire off-diagonal part of the matrix (including the
+!  main diagonal block), so that it becomes possible to implement
+!  a pure Jacobi or L1-Jacobi global solver.
+!
+module amg_s_poly_smoother
+  use amg_s_base_smoother_mod
+  use amg_d_poly_coeff_mod
+  
+  type, extends(amg_s_base_smoother_type) :: amg_s_poly_smoother_type
+    ! The local solver component is inherited from the
+    ! parent type.
+    !    class(amg_s_base_solver_type), allocatable :: sv
+    !
+    integer(psb_ipk_)              :: pdegree, variant
+    integer(psb_ipk_)              :: rho_estimate=amg_poly_rho_est_power_
+    integer(psb_ipk_)              :: rho_estimate_iterations=10
+    type(psb_sspmat_type), pointer :: pa => null()
+    real(psb_spk_), allocatable    :: poly_beta(:)
+    real(psb_spk_)                 :: cf_a = szero
+    real(psb_spk_)                 :: rho_ba = -sone
+  contains
+    procedure, pass(sm) :: apply_v => amg_s_poly_smoother_apply_vect
+!!$    procedure, pass(sm) :: apply_a => amg_s_poly_smoother_apply
+    procedure, pass(sm) :: dump    => amg_s_poly_smoother_dmp
+    procedure, pass(sm) :: build   => amg_s_poly_smoother_bld
+    procedure, pass(sm) :: cnv     => amg_s_poly_smoother_cnv
+    procedure, pass(sm) :: clone   => amg_s_poly_smoother_clone
+    procedure, pass(sm) :: clone_settings => amg_s_poly_smoother_clone_settings
+    procedure, pass(sm) :: clear_data     => amg_s_poly_smoother_clear_data  
+    procedure, pass(sm) :: free    => s_poly_smoother_free
+    procedure, pass(sm) :: cseti   => amg_s_poly_smoother_cseti
+    procedure, pass(sm) :: csetc   => amg_s_poly_smoother_csetc
+    procedure, pass(sm) :: csetr   => amg_s_poly_smoother_csetr
+    procedure, pass(sm) :: descr   => amg_s_poly_smoother_descr
+    procedure, pass(sm) :: sizeof  => s_poly_smoother_sizeof
+    procedure, pass(sm) :: default => s_poly_smoother_default
+    procedure, pass(sm) :: get_nzeros => s_poly_smoother_get_nzeros
+    procedure, pass(sm) :: get_wrksz => s_poly_smoother_get_wrksize
+    procedure, nopass   :: get_fmt    => s_poly_smoother_get_fmt
+    procedure, nopass   :: get_id     => s_poly_smoother_get_id
+  end type amg_s_poly_smoother_type
+  private :: s_poly_smoother_free, &
+       & s_poly_smoother_sizeof,  s_poly_smoother_get_nzeros, &
+       & s_poly_smoother_get_fmt, s_poly_smoother_get_id, &
+       & s_poly_smoother_get_wrksize
+
+
+  interface
+    subroutine amg_s_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
+         & sweeps,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_
+
+      type(psb_desc_type), intent(in)                 :: desc_data
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      type(psb_s_vect_type),intent(inout)           :: x
+      type(psb_s_vect_type),intent(inout)           :: y
+      real(psb_spk_),intent(in)                      :: alpha,beta
+      character(len=1),intent(in)                     :: trans
+      integer(psb_ipk_), intent(in)                   :: sweeps
+      real(psb_spk_),target, intent(inout)           :: work(:)
+      type(psb_s_vect_type),intent(inout)           :: wv(:)
+      integer(psb_ipk_), intent(out)                  :: info
+      character, intent(in), optional                :: init
+      type(psb_s_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_s_poly_smoother_apply_vect
+  end interface
+
+!!$  interface
+!!$    subroutine amg_s_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
+!!$         & sweeps,work,info,init,initu)
+!!$      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+!!$           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
+!!$           & psb_ipk_
+!!$      type(psb_desc_type), intent(in)      :: desc_data
+!!$      class(amg_s_poly_smoother_type), intent(inout) :: sm
+!!$      real(psb_spk_),intent(inout)         :: x(:)
+!!$      real(psb_spk_),intent(inout)         :: y(:)
+!!$      real(psb_spk_),intent(in)            :: alpha,beta
+!!$      character(len=1),intent(in)           :: trans
+!!$      integer(psb_ipk_), intent(in)         :: sweeps
+!!$      real(psb_spk_),target, intent(inout) :: work(:)
+!!$      integer(psb_ipk_), intent(out)        :: info
+!!$      character, intent(in), optional       :: init
+!!$      real(psb_spk_),intent(inout), optional :: initu(:)
+!!$    end subroutine amg_s_poly_smoother_apply
+!!$  end interface
+!!$
+  
+  interface
+    subroutine amg_s_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
+      import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
+           & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_bld
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cnv(sm,info,amold,vmold,imold)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & psb_s_base_sparse_mat, psb_s_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      class(amg_s_poly_smoother_type), intent(inout)       :: sm
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_s_base_sparse_mat), intent(in), optional :: amold
+      class(psb_s_base_vect_type), intent(in), optional  :: vmold
+      class(psb_i_base_vect_type), intent(in), optional  :: imold
+    end subroutine amg_s_poly_smoother_cnv
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, &
+           & psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      type(psb_desc_type), intent(in)               :: desc
+      integer(psb_ipk_), intent(in)               :: level
+      integer(psb_ipk_), intent(out)              :: info
+      character(len=*), intent(in), optional :: prefix, head
+      logical, optional, intent(in)    :: smoother, solver, global_num
+    end subroutine amg_s_poly_smoother_dmp
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clone_settings(sm,smout,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clone_settings
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_clear_data(sm,info)
+      import :: amg_s_poly_smoother_type, psb_spk_, &
+           & amg_s_base_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(inout)               :: sm
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_s_poly_smoother_clear_data
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_descr(sm,info,iout,coarse,prefix)
+      import :: amg_s_poly_smoother_type, psb_ipk_
+      class(amg_s_poly_smoother_type), intent(in) :: sm
+      integer(psb_ipk_), intent(out)               :: info
+      integer(psb_ipk_), intent(in), optional      :: iout
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
+    end subroutine amg_s_poly_smoother_descr
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_cseti(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      integer(psb_ipk_), intent(in)                  :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_cseti
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetc(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      character(len=*), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetc
+  end interface
+
+  interface
+    subroutine amg_s_poly_smoother_csetr(sm,what,val,info,idx)
+      import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
+           & psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
+      implicit none
+      class(amg_s_poly_smoother_type), intent(inout) :: sm
+      character(len=*), intent(in)                   :: what
+      real(psb_spk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)                 :: info
+      integer(psb_ipk_), intent(in), optional        :: idx
+    end subroutine amg_s_poly_smoother_csetr
+  end interface
+
+
+contains
+
+
+  subroutine s_poly_smoother_free(sm,info)
+
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_), intent(out)                  :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20)  :: name='s_poly_smoother_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+
+
+    if (allocated(sm%sv)) then
+      call sm%sv%free(info)
+      if (info == psb_success_) deallocate(sm%sv,stat=info)
+      if (info /= psb_success_) then
+        info = psb_err_alloc_dealloc_
+        call psb_errpush(info,name)
+        goto 9999
+      end if
+    end if
+    if (allocated(sm%poly_beta))  deallocate(sm%poly_beta)
+    sm%pa => null()
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine s_poly_smoother_free
+
+  function s_poly_smoother_sizeof(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+
+    val = psb_sizeof_dp
+    if (allocated(sm%sv)) val = val + sm%sv%sizeof()
+    if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
+
+    return
+  end function s_poly_smoother_sizeof
+
+  subroutine s_poly_smoother_default(sm)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+
+    !
+    ! Default: BJAC with no residual check
+    !
+    sm%pdegree      = 1
+    sm%rho_ba       = -sone
+    sm%variant      = amg_cheb_4_
+    sm%rho_estimate = amg_poly_rho_est_power_
+    sm%rho_estimate_iterations = 20
+    if (allocated(sm%sv)) then
+      call sm%sv%default()
+    end if
+
+    return
+  end subroutine s_poly_smoother_default
+
+  function s_poly_smoother_get_nzeros(sm) result(val)
+
+    implicit none
+    ! Arguments
+    class(amg_s_poly_smoother_type), intent(in) :: sm
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = 0
+    if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
+
+    return
+  end function s_poly_smoother_get_nzeros
+
+  function s_poly_smoother_get_wrksize(sm) result(val)
+    implicit none
+    class(amg_s_poly_smoother_type), intent(inout) :: sm
+    integer(psb_ipk_)  :: val
+
+    val = 4
+    if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
+
+  end function s_poly_smoother_get_wrksize
+
+  function s_poly_smoother_get_fmt() result(val)
+    implicit none
+    character(len=32)  :: val
+
+    val = "Polynomial smoother"
+  end function s_poly_smoother_get_fmt
+
+  function s_poly_smoother_get_id() result(val)
+    implicit none
+    integer(psb_ipk_)  :: val
+
+    val = amg_poly_
+  end function s_poly_smoother_get_id
+
+
+end module amg_s_poly_smoother

amgprec/amg_s_prec_type.f90

@@ -135,8 +135,11 @@ module amg_s_prec_type
     procedure, pass(prec)               :: build        => amg_sprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_s_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_s_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_s_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_s_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_s_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_sfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_sfile_prec_memory_use
   end type amg_sprec_type
 
   private :: amg_s_dump, amg_s_get_compl,  amg_s_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_s_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_sfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_sfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_sprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_sprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_sfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_sfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_sprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_sprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_sfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_sprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_s_prec_type
     end subroutine amg_s_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_s_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_s_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_s_prec_free
 
+  subroutine amg_s_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_smoothers_free
+
+  subroutine amg_s_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_sprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_s_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_s_hierarchy_free
 
 
   !

amgprec/amg_s_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine s_slu_solver_finalize
 
-  subroutine s_slu_solver_descr(sv,info,iout,coarse)
+  subroutine s_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_s_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_s_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_s_symdec_aggregator_mod.f90

@@ -88,16 +88,25 @@ contains
     val = "Symmetric Decoupled aggregation"
   end function amg_s_symdec_aggregator_fmt
   
-  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_s_symdec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_s_symdec_aggregator_type), intent(in) :: ag
     type(amg_sml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
 
-    write(iout,*) 'Decoupled Aggregator locally-symmetrized'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    character(1024)    :: prefix_
+
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_s_symdec_aggregator_descr

amgprec/amg_z_ainv_solver.F90

@@ -58,6 +58,7 @@ module amg_z_ainv_solver
     procedure, pass(sv) :: check   => amg_z_ainv_solver_check
     procedure, pass(sv) :: build   => amg_z_ainv_solver_bld
     procedure, pass(sv) :: clone   => amg_z_ainv_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_ainv_solver_clone_settings
     procedure, pass(sv) :: cseti   => amg_z_ainv_solver_cseti
     procedure, pass(sv) :: csetc   => amg_z_ainv_solver_csetc
     procedure, pass(sv) :: csetr   => amg_z_ainv_solver_csetr
@@ -85,6 +86,16 @@ module amg_z_ainv_solver
     end subroutine amg_z_ainv_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_ainv_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_ainv_solver_type), intent(inout)              :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_z_ainv_solver_clone_settings
+  end interface
 
   interface
     subroutine amg_z_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
@@ -198,7 +209,7 @@ module amg_z_ainv_solver
 !!$  end interface
 
   interface
-    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_ainv_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_ainv_solver_type, psb_ipk_
 
       Implicit None
@@ -208,7 +219,7 @@ module amg_z_ainv_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_ainv_solver_descr
   end interface
 

amgprec/amg_z_as_smoother.f90

@@ -396,21 +396,23 @@ contains
   end subroutine z_as_smoother_default
 
 
-  subroutine z_as_smoother_descr(sm,info,iout,coarse)
+  subroutine z_as_smoother_descr(sm,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_as_smoother_type), intent(in) :: sm
-    integer(psb_ipk_), intent(out)                      :: info
-    integer(psb_ipk_), intent(in), optional             :: iout
-    logical, intent(in), optional             :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional              :: coarse
+      character(len=*), intent(in), optional   :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_as_smoother_descr'
     integer(psb_ipk_) :: iout_
     logical      :: coarse_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -424,16 +426,21 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (.not.coarse_) then 
-      write(iout_,*) '  Additive Schwarz with  ',&
+      write(iout_,*) trim(prefix_), '  Additive Schwarz with  ',&
            &  sm%novr, ' overlap layers.'
-      write(iout_,*) '  Restrictor:  ',restrict_names(sm%restr)
-      write(iout_,*) '  Prolongator: ',prolong_names(sm%prol)
-      write(iout_,*) '  Local solver:'
+      write(iout_,*) trim(prefix_), '  Restrictor:  ',restrict_names(sm%restr)
+      write(iout_,*) trim(prefix_), '  Prolongator: ',prolong_names(sm%prol)
+      write(iout_,*) trim(prefix_), '  Local solver:'
     endif
     if (allocated(sm%sv)) then 
-      call sm%sv%descr(info,iout_,coarse=coarse)
+      call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
     end if
 
     call psb_erractionrestore(err_act)

amgprec/amg_z_base_aggregator_mod.f90

@@ -275,15 +275,22 @@ contains
     val = .false.
   end function amg_z_base_aggregator_xt_desc
 
-  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_z_base_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_z_base_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ', 'Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_z_base_aggregator_descr

amgprec/amg_z_base_smoother_mod.f90

@@ -272,7 +272,7 @@ module amg_z_base_smoother_mod
   end interface
   
   interface 
-    subroutine amg_z_base_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_base_smoother_descr(sm,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
            & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
            & amg_z_base_smoother_type, psb_ipk_
@@ -281,6 +281,7 @@ module amg_z_base_smoother_mod
       integer(psb_ipk_), intent(out)                :: info
       integer(psb_ipk_), intent(in), optional       :: iout
       logical, intent(in), optional                 :: coarse
+      character(len=*), intent(in), optional        :: prefix
     end subroutine amg_z_base_smoother_descr
   end interface
   

amgprec/amg_z_base_solver_mod.f90

@@ -270,7 +270,7 @@ module amg_z_base_solver_mod
   end interface
   
   interface
-    subroutine amg_z_base_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_base_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
            & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
            & amg_z_base_solver_type, psb_ipk_
@@ -281,7 +281,7 @@ module amg_z_base_solver_mod
       integer(psb_ipk_), intent(out)              :: info
       integer(psb_ipk_), intent(in), optional     :: iout
       logical, intent(in), optional               :: coarse
-
+      character(len=*), intent(in), optional      :: prefix
     end subroutine amg_z_base_solver_descr
   end interface 
   

amgprec/amg_z_dec_aggregator_mod.f90

@@ -184,16 +184,23 @@ contains
     val = "Decoupled aggregation"
   end function amg_z_dec_aggregator_fmt
   
-  subroutine  amg_z_dec_aggregator_descr(ag,parms,iout,info)
+  subroutine  amg_z_dec_aggregator_descr(ag,parms,iout,info,prefix)
     implicit none 
     class(amg_z_dec_aggregator_type), intent(in) :: ag
     type(amg_dml_parms), intent(in)   :: parms
     integer(psb_ipk_), intent(in)  :: iout
     integer(psb_ipk_), intent(out) :: info
+    character(len=*), intent(in), optional  :: prefix
+    character(1024)    :: prefix_
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout,*) 'Decoupled Aggregator'
-    write(iout,*) 'Aggregator object type: ',ag%fmt()
-    call parms%mldescr(iout,info)
+    write(iout,*) trim(prefix_),' ','Decoupled Aggregator'
+    write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
+    call parms%mldescr(iout,info,prefix=prefix)
     
     return
   end subroutine amg_z_dec_aggregator_descr

amgprec/amg_z_diag_solver.f90

@@ -219,7 +219,7 @@ contains
 
   end subroutine z_diag_solver_free
 
-  subroutine z_diag_solver_descr(sv,info,iout,coarse)
+  subroutine z_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -228,11 +228,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -240,8 +242,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  Diagonal local solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  Diagonal local solver '
 
     return
 
@@ -352,7 +359,7 @@ module amg_z_l1_diag_solver
   
 contains
 
-  subroutine z_l1_diag_solver_descr(sv,info,iout,coarse)
+  subroutine z_l1_diag_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -361,11 +368,13 @@ contains
     integer(psb_ipk_), intent(out)              :: info
     integer(psb_ipk_), intent(in), optional     :: iout
     logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_l1_diag_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -373,8 +382,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
-    
-    write(iout_,*) '  L1 Diagonal solver '
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    write(iout_,*) trim(prefix_), '  L1 Diagonal solver '
 
     return
 

amgprec/amg_z_gs_solver.f90

@@ -433,20 +433,22 @@ contains
     return
   end subroutine z_gs_solver_free
 
-  subroutine z_gs_solver_descr(sv,info,iout,coarse)
+  subroutine z_gs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_gs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_gs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -455,12 +457,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Forward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Forward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     
@@ -526,20 +533,22 @@ contains
     val = .true.
   end function z_gs_solver_is_iterative
     
-  subroutine z_bwgs_solver_descr(sv,info,iout,coarse)
+  subroutine z_bwgs_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_bwgs_solver_type), intent(in) :: sv
-    integer(psb_ipk_), intent(out)             :: info
-    integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    integer(psb_ipk_), intent(out)              :: info
+    integer(psb_ipk_), intent(in), optional     :: iout
+    logical, intent(in), optional               :: coarse
+    character(len=*), intent(in), optional      :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_bwgs_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -548,12 +557,17 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%eps<=dzero) then 
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  ',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  ',&
            &  sv%sweeps,' sweeps'
     else
-      write(iout_,*) '  Backward Gauss-Seidel iterative solver with  tolerance',&
+      write(iout_,*) trim(prefix_), '  Backward Gauss-Seidel iterative solver with  tolerance',&
            &  sv%eps,' and maxit', sv%sweeps
     end if
     

amgprec/amg_z_id_solver.f90

@@ -157,7 +157,7 @@ contains
     return
   end subroutine z_id_solver_free
 
-  subroutine z_id_solver_descr(sv,info,iout,coarse)
+  subroutine z_id_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -165,12 +165,14 @@ contains
     class(amg_z_id_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)            :: info
     integer(psb_ipk_), intent(in), optional   :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_id_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     info = psb_success_
     if (present(iout)) then 
@@ -178,8 +180,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  Identity local solver '
+    write(iout_,*) trim(prefix_), '  Identity local solver '
 
     return
 

amgprec/amg_z_ilu_solver.f90

@@ -234,7 +234,7 @@ contains
     ! Arguments
     class(amg_z_ilu_solver_type), intent(inout) :: sv
 
-    sv%fact_type = psb_ilu_n_
+    sv%fact_type = amg_ilu_n_
     sv%fill_in   = 0
     sv%thresh    = dzero
 
@@ -255,13 +255,13 @@ contains
     info = psb_success_
 
     call amg_check_def(sv%fact_type,&
-         & 'Factorization',psb_ilu_n_,is_legal_ilu_fact)
+         & 'Factorization',amg_ilu_n_,is_legal_ilu_fact)
 
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
+    case(amg_ilu_n_,amg_milu_n_)      
       call amg_check_def(sv%fill_in,&
            & 'Level',izero,is_int_non_negative)
-    case(psb_ilu_t_)                 
+    case(amg_ilu_t_)                 
       call amg_check_def(sv%thresh,&
            & 'Eps',dzero,is_legal_d_fact_thrs)
     end select
@@ -406,7 +406,7 @@ contains
     return
   end subroutine z_ilu_solver_free
 
-  subroutine z_ilu_solver_descr(sv,info,iout,coarse)
+  subroutine z_ilu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -414,12 +414,14 @@ contains
     class(amg_z_ilu_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
-
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
+      
     ! Local variables
     integer(psb_ipk_) :: err_act
     character(len=20), parameter :: name='amg_z_ilu_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -428,15 +430,20 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
-    write(iout_,*) '  Incomplete factorization solver: ',&
+    write(iout_,*) trim(prefix_), '  Incomplete factorization solver: ',&
          &  amg_fact_names(sv%fact_type)
     select case(sv%fact_type)
-    case(psb_ilu_n_,psb_milu_n_)      
-      write(iout_,*) '  Fill level:',sv%fill_in
-    case(psb_ilu_t_)         
-      write(iout_,*) '  Fill level:',sv%fill_in
-      write(iout_,*) '  Fill threshold :',sv%thresh
+    case(amg_ilu_n_,amg_milu_n_)      
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+    case(amg_ilu_t_)         
+      write(iout_,*) trim(prefix_), '  Fill level:',sv%fill_in
+      write(iout_,*) trim(prefix_), '  Fill threshold :',sv%thresh
     end select
 
     call psb_erractionrestore(err_act)
@@ -489,7 +496,7 @@ contains
     implicit none 
     integer(psb_ipk_)  :: val
     
-    val = psb_ilu_n_
+    val = amg_ilu_n_
   end function z_ilu_solver_get_id
 
   function z_ilu_solver_get_wrksize() result(val)

amgprec/amg_z_inner_mod.f90

@@ -109,11 +109,12 @@ module amg_z_inner_mod
   end interface amg_map_to_tprol
 
   abstract interface
-    subroutine amg_zaggrmat_var_bld(a,desc_a,ilaggr,nlaggr,parms,&
+    subroutine amg_zaggrmat_var_bld(dol1smoothing,a,desc_a,ilaggr,nlaggr,parms,&
          & ac,desc_ac,op_prol,op_restr,t_prol,info)
       import :: psb_zspmat_type, psb_desc_type, psb_dpk_, psb_ipk_, psb_lpk_, psb_lzspmat_type
       import ::  amg_z_onelev_type, amg_dml_parms
       implicit none 
+      integer(psb_ipk_), intent(in)               :: dol1smoothing
       type(psb_zspmat_type), intent(in)         :: a
       type(psb_desc_type), intent(inout)          :: desc_a
       integer(psb_lpk_), intent(inout)            :: ilaggr(:), nlaggr(:)

amgprec/amg_z_invk_solver.f90

@@ -52,6 +52,7 @@ module amg_z_invk_solver
   contains
     procedure, pass(sv) :: check   => amg_z_invk_solver_check
     procedure, pass(sv) :: clone   => amg_z_invk_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_invk_solver_clone_settings
     procedure, pass(sv) :: build   => amg_z_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_z_invk_solver_cseti
     procedure, pass(sv) :: descr   => amg_z_invk_solver_descr
@@ -73,6 +74,17 @@ module amg_z_invk_solver
     end subroutine amg_z_invk_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_invk_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_invk_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_invk_solver_type), intent(inout)              :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_z_invk_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_z_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
@@ -123,7 +135,7 @@ module amg_z_invk_solver
   end interface
 
   interface
-    subroutine amg_z_invk_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_invk_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_invk_solver_type, psb_ipk_
 
       Implicit None
@@ -133,7 +145,7 @@ module amg_z_invk_solver
       integer(psb_ipk_), intent(out)            :: info
       integer(psb_ipk_), intent(in), optional   :: iout
       logical, intent(in), optional             :: coarse
-
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_invk_solver_descr
   end interface
 

amgprec/amg_z_invt_solver.f90

@@ -52,6 +52,7 @@ module amg_z_invt_solver
   contains
     procedure, pass(sv) :: check   => amg_z_invt_solver_check
     procedure, pass(sv) :: clone   => amg_z_invt_solver_clone
+    procedure, pass(sv) :: clone_settings   => amg_z_invt_solver_clone_settings
     procedure, pass(sv) :: build   => amg_z_invt_solver_bld
     procedure, pass(sv) :: cseti   => amg_z_invt_solver_cseti
     procedure, pass(sv) :: csetr   => amg_z_invt_solver_csetr
@@ -73,6 +74,17 @@ module amg_z_invt_solver
     end subroutine amg_z_invt_solver_clone
   end interface
 
+  interface
+    subroutine amg_z_invt_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_invt_solver_type), intent(inout)              :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_z_invt_solver_clone_settings
+  end interface
+
   interface
     subroutine amg_z_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
       import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
@@ -134,16 +146,17 @@ module amg_z_invt_solver
   end interface
 
   interface
-    subroutine amg_z_invt_solver_descr(sv,info,iout,coarse)
+    subroutine amg_z_invt_solver_descr(sv,info,iout,coarse,prefix)
       import :: psb_dpk_, amg_z_invt_solver_type, psb_ipk_
 
       Implicit None
 
       ! Arguments
       class(amg_z_invt_solver_type), intent(in) :: sv
-      integer(psb_ipk_), intent(out)            :: info
-      integer(psb_ipk_), intent(in), optional   :: iout
-      logical, intent(in), optional             :: coarse
+      integer(psb_ipk_), intent(out)              :: info
+      integer(psb_ipk_), intent(in), optional     :: iout
+      logical, intent(in), optional               :: coarse
+      character(len=*), intent(in), optional      :: prefix
 
     end subroutine amg_z_invt_solver_descr
   end interface

amgprec/amg_z_jac_smoother.f90

@@ -219,12 +219,13 @@ module amg_z_jac_smoother
   end interface
 
   interface
-    subroutine amg_z_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_z_jac_smoother_type, psb_ipk_
       class(amg_z_jac_smoother_type), intent(in) :: sm
       integer(psb_ipk_), intent(out)               :: info
       integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      logical, intent(in), optional                :: coarse
+      character(len=*), intent(in), optional       :: prefix
     end subroutine amg_z_jac_smoother_descr
   end interface
 
@@ -313,12 +314,13 @@ module amg_z_jac_smoother
   end interface
 
   interface
-    subroutine amg_z_l1_jac_smoother_descr(sm,info,iout,coarse)
+    subroutine amg_z_l1_jac_smoother_descr(sm,info,iout,coarse,prefix)
       import :: amg_z_l1_jac_smoother_type, psb_ipk_
       class(amg_z_l1_jac_smoother_type), intent(in) :: sm
-      integer(psb_ipk_), intent(out)               :: info
-      integer(psb_ipk_), intent(in), optional      :: iout
-      logical, intent(in), optional              :: coarse
+      integer(psb_ipk_), intent(out)                  :: info
+      integer(psb_ipk_), intent(in), optional         :: iout
+      logical, intent(in), optional                   :: coarse
+      character(len=*), intent(in), optional          :: prefix
     end subroutine amg_z_l1_jac_smoother_descr
   end interface
 

amgprec/amg_z_jac_solver.f90

@@ -0,0 +1,585 @@
+!  
+!   
+!                             AMG4PSBLAS version 1.0
+!    Algebraic Multigrid Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.7)
+!    
+!    (C) Copyright 2021 
+!  
+!        Salvatore Filippone  
+!        Pasqua D'Ambra   
+!        Fabio Durastante        
+!   
+!    Redistribution and use in source and binary forms, with or without
+!    modification, are permitted provided that the following conditions
+!    are met:
+!      1. Redistributions of source code must retain the above copyright
+!         notice, this list of conditions and the following disclaimer.
+!      2. Redistributions in binary form must reproduce the above copyright
+!         notice, this list of conditions, and the following disclaimer in the
+!         documentation and/or other materials provided with the distribution.
+!      3. The name of the AMG4PSBLAS group or the names of its contributors may
+!         not be used to endorse or promote products derived from this
+!         software without specific written permission.
+!   
+!    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+!    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+!    TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+!    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
+!    BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+!    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+!    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+!    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+!    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+!    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+!    POSSIBILITY OF SUCH DAMAGE.
+!   
+!  
+!
+!
+! File: amg_z_jac_solver_mod.f90
+!
+! Module: amg_z_jac_solver_mod
+!
+!  This module defines: 
+!  - the amg_z_jac_solver_type data structure containing the ingredients
+!    for a local Jacobi  iteration. The iterations are local to a process
+!    (they operate on the block diagonal).
+!    
+!
+module amg_z_jac_solver
+
+  use amg_z_base_solver_mod
+
+  type, extends(amg_z_base_solver_type) :: amg_z_jac_solver_type
+    type(psb_zspmat_type)      :: a
+    type(psb_z_vect_type), allocatable :: dv
+    complex(psb_dpk_), allocatable        :: d(:)
+    integer(psb_ipk_)          :: sweeps
+    real(psb_dpk_)             :: eps
+  contains
+    procedure, pass(sv) :: dump    => amg_z_jac_solver_dmp
+    procedure, pass(sv) :: check   => z_jac_solver_check
+    procedure, pass(sv) :: clone   => amg_z_jac_solver_clone
+    procedure, pass(sv) :: clone_settings => amg_z_jac_solver_clone_settings
+    procedure, pass(sv) :: clear_data     => amg_z_jac_solver_clear_data
+    procedure, pass(sv) :: build   => amg_z_jac_solver_bld
+    procedure, pass(sv) :: cnv     => amg_z_jac_solver_cnv
+    procedure, pass(sv) :: apply_v => amg_z_jac_solver_apply_vect
+    procedure, pass(sv) :: apply_a => amg_z_jac_solver_apply
+    procedure, pass(sv) :: free    => z_jac_solver_free
+    procedure, pass(sv) :: cseti   => z_jac_solver_cseti
+    procedure, pass(sv) :: csetc   => z_jac_solver_csetc
+    procedure, pass(sv) :: csetr   => z_jac_solver_csetr
+    procedure, pass(sv) :: descr   => z_jac_solver_descr
+    procedure, pass(sv) :: default => z_jac_solver_default
+    procedure, pass(sv) :: sizeof  => z_jac_solver_sizeof
+    procedure, pass(sv) :: get_nzeros => z_jac_solver_get_nzeros
+    procedure, nopass   :: get_wrksz  => z_jac_solver_get_wrksize
+    procedure, nopass   :: get_fmt    => z_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => z_jac_solver_get_id
+    procedure, nopass   :: is_iterative => z_jac_solver_is_iterative
+  end type amg_z_jac_solver_type
+
+  type, extends(amg_z_jac_solver_type) :: amg_z_l1_jac_solver_type
+  contains
+    procedure, pass(sv) :: build   => amg_z_l1_jac_solver_bld
+    procedure, pass(sv) :: descr   => z_l1_jac_solver_descr
+    procedure, nopass   :: get_fmt    => z_l1_jac_solver_get_fmt
+    procedure, nopass   :: get_id     => z_l1_jac_solver_get_id
+  end type amg_z_l1_jac_solver_type
+
+
+  private :: z_jac_solver_bld, z_jac_solver_apply, &
+       &  z_jac_solver_free,   &
+       &  z_jac_solver_descr,  z_jac_solver_sizeof, &
+       &  z_jac_solver_default, z_jac_solver_dmp, &
+       &  z_jac_solver_apply_vect, z_jac_solver_get_nzeros, &
+       &  z_jac_solver_get_fmt, z_jac_solver_check,&
+       &  z_jac_solver_is_iterative, &
+       &  z_jac_solver_get_id, z_jac_solver_get_wrksize
+
+  interface 
+    subroutine amg_z_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
+         & trans,work,wv,info,init,initu)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)             :: desc_data
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      type(psb_z_vect_type),intent(inout)         :: x
+      type(psb_z_vect_type),intent(inout)         :: y
+      complex(psb_dpk_),intent(in)                    :: alpha,beta
+      character(len=1),intent(in)                   :: trans
+      complex(psb_dpk_),target, intent(inout)         :: work(:)
+      type(psb_z_vect_type),intent(inout)         :: wv(:)
+      integer(psb_ipk_), intent(out)                :: info
+      character, intent(in), optional                :: init
+      type(psb_z_vect_type),intent(inout), optional   :: initu
+    end subroutine amg_z_jac_solver_apply_vect
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info,init,initu)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, psb_ipk_
+      implicit none 
+      type(psb_desc_type), intent(in)      :: desc_data
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      complex(psb_dpk_),intent(inout)         :: x(:)
+      complex(psb_dpk_),intent(inout)         :: y(:)
+      complex(psb_dpk_),intent(in)            :: alpha,beta
+      character(len=1),intent(in)           :: trans
+      complex(psb_dpk_),target, intent(inout) :: work(:)
+      integer(psb_ipk_), intent(out)        :: info
+      character, intent(in), optional       :: init
+      complex(psb_dpk_),intent(inout), optional :: initu(:)
+    end subroutine amg_z_jac_solver_apply
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_zspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_z_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_zspmat_type), intent(in), target, optional :: b
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_z_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, amg_z_l1_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      type(psb_zspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a 
+      class(amg_z_l1_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      type(psb_zspmat_type), intent(in), target, optional :: b
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_l1_jac_solver_bld
+  end interface
+
+  interface 
+    subroutine amg_z_jac_solver_cnv(sv,info,amold,vmold,imold)
+      import :: amg_z_jac_solver_type, psb_dpk_, &
+           & psb_z_base_sparse_mat, psb_z_base_vect_type,&
+           & psb_ipk_, psb_i_base_vect_type
+      implicit none 
+      class(amg_z_jac_solver_type), intent(inout)         :: sv
+      integer(psb_ipk_), intent(out)                      :: info
+      class(psb_z_base_sparse_mat), intent(in), optional  :: amold
+      class(psb_z_base_vect_type), intent(in), optional   :: vmold
+      class(psb_i_base_vect_type), intent(in), optional   :: imold
+    end subroutine amg_z_jac_solver_cnv
+  end interface
+  
+  interface 
+    subroutine amg_z_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+      import :: psb_desc_type, amg_z_jac_solver_type, psb_z_vect_type, psb_dpk_, &
+           & psb_zspmat_type, psb_z_base_sparse_mat, psb_z_base_vect_type, &
+           & psb_ipk_
+      implicit none 
+      class(amg_z_jac_solver_type), intent(in) :: sv
+      type(psb_desc_type), intent(in)             :: desc
+      integer(psb_ipk_), intent(in)              :: level
+      integer(psb_ipk_), intent(out)             :: info
+      character(len=*), intent(in), optional     :: prefix, head
+      logical, optional, intent(in)              :: solver, global_num
+    end subroutine amg_z_jac_solver_dmp
+  end interface
+  
+  interface
+    subroutine amg_z_jac_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_base_solver_type, amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout)               :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)              :: info
+    end subroutine amg_z_jac_solver_clone
+  end interface
+  
+!!$  interface
+!!$    subroutine amg_z_l1_jac_solver_clone(sv,svout,info)
+!!$      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+!!$           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+!!$           & amg_z_base_solver_type, amg_z_l1_jac_solver_type, psb_ipk_
+!!$      Implicit None
+!!$      
+!!$      ! Arguments
+!!$      class(amg_z_l1_jac_solver_type), intent(inout)               :: sv
+!!$      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+!!$      integer(psb_ipk_), intent(out)              :: info
+!!$    end subroutine amg_z_l1_jac_solver_clone
+!!$  end interface
+
+  interface
+    subroutine amg_z_jac_solver_clone_settings(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_base_solver_type, amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      class(amg_z_base_solver_type), intent(inout) :: svout
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_z_jac_solver_clone_settings
+  end interface
+
+  interface
+    subroutine amg_z_jac_solver_clear_data(sv,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, &
+           & amg_z_jac_solver_type, psb_ipk_
+      Implicit None
+      
+      ! Arguments
+      class(amg_z_jac_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)                 :: info
+    end subroutine amg_z_jac_solver_clear_data
+  end interface
+
+contains
+
+  subroutine z_jac_solver_default(sv)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+
+    sv%sweeps = ione
+    sv%eps    = dzero
+    
+    return
+  end subroutine z_jac_solver_default
+
+  subroutine z_jac_solver_check(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_) :: err_act
+    character(len=20) :: name='z_jac_solver_check'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call amg_check_def(sv%sweeps,&
+         & 'Jacobi sweeps',ione,is_int_positive)
+
+    if (info /= psb_success_) goto 9999
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine z_jac_solver_check
+
+  subroutine z_jac_solver_cseti(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    integer(psb_ipk_), intent(in)                 :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_cseti'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+    select case(psb_toupper(what))
+    case('SOLVER_SWEEPS')
+      sv%sweeps = val      
+    case default
+      call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_cseti
+
+  subroutine z_jac_solver_csetc(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    character(len=*), intent(in)                  :: what 
+    character(len=*), intent(in)                  :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act, ival
+    character(len=20)  :: name='z_jac_solver_csetc'
+
+    info = psb_success_
+    call psb_erractionsave(err_act)
+
+
+    call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+  
+    if (info /= psb_success_) then
+      info = psb_err_from_subroutine_
+      call psb_errpush(info, name)
+      goto 9999
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_csetc
+  
+  subroutine z_jac_solver_csetr(sv,what,val,info,idx)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv 
+    character(len=*), intent(in)                  :: what 
+    real(psb_dpk_), intent(in)                     :: val
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_), intent(in), optional       :: idx
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_csetr'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    select case(psb_toupper(what))
+    case('SOLVER_EPS') 
+      sv%eps = val
+    case default
+      call sv%amg_z_base_solver_type%set(what,val,info,idx=idx)
+    end select
+
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_csetr
+
+  subroutine z_jac_solver_free(sv,info)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(inout) :: sv
+    integer(psb_ipk_), intent(out)                :: info
+    integer(psb_ipk_)  :: err_act
+    character(len=20)  :: name='z_jac_solver_free'
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+
+    call sv%a%free()
+    if (allocated(sv%dv)) then
+      call sv%dv%free(info)
+      deallocate(sv%dv)
+    end if
+    if (allocated(sv%d)) deallocate(sv%d)
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_free
+
+  subroutine z_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_z_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_jac_solver_descr
+
+  function z_jac_solver_get_nzeros(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+    
+    val = 0 
+    val = val + sv%a%get_nzeros()
+    val = val + sv%dv%get_nrows()
+
+    return
+  end function z_jac_solver_get_nzeros
+
+  function z_jac_solver_sizeof(sv) result(val)
+
+    implicit none 
+    ! Arguments
+    class(amg_z_jac_solver_type), intent(in) :: sv
+    integer(psb_epk_) :: val
+    integer(psb_ipk_)        :: i
+
+    val = psb_sizeof_ip 
+    val = val + sv%a%sizeof()
+    val = val + sv%dv%sizeof()
+
+    return
+  end function z_jac_solver_sizeof
+
+  function z_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "Jacobi solver"
+  end function z_jac_solver_get_fmt
+
+  function z_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_jac_
+  end function z_jac_solver_get_id
+
+  !
+  ! If this is true, then the solver needs a starting
+  ! guess. Currently only handled in JAC smoother. 
+  ! 
+  function z_jac_solver_is_iterative() result(val)
+    implicit none 
+    logical  :: val
+
+    val = .true.
+  end function z_jac_solver_is_iterative
+    
+  function z_jac_solver_get_wrksize() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = 2
+  end function z_jac_solver_get_wrksize
+
+  subroutine z_l1_jac_solver_descr(sv,info,iout,coarse,prefix)
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_l1_jac_solver_type), intent(in) :: sv
+    integer(psb_ipk_), intent(out)            :: info
+    integer(psb_ipk_), intent(in), optional   :: iout
+    logical, intent(in), optional             :: coarse
+    character(len=*), intent(in), optional    :: prefix
+
+    ! Local variables
+    integer(psb_ipk_)      :: err_act
+    character(len=20), parameter :: name='amg_z_l1_jac_solver_descr'
+    integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
+
+    call psb_erractionsave(err_act)
+    info = psb_success_
+    if (present(iout)) then 
+      iout_ = iout 
+    else
+      iout_ = psb_out_unit
+    endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
+
+    if (sv%eps<=dzero) then 
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  ',&
+           &  sv%sweeps,' sweeps'
+    else
+      write(iout_,*) trim(prefix_), '  L1-Jacobi iterative solver with  tolerance',&
+           &  sv%eps,' and maxit', sv%sweeps
+    end if
+    
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+  end subroutine z_l1_jac_solver_descr
+
+  function z_l1_jac_solver_get_fmt() result(val)
+    implicit none 
+    character(len=32)  :: val
+
+    val = "L1-Jacobi solver"
+  end function z_l1_jac_solver_get_fmt
+
+  function z_l1_jac_solver_get_id() result(val)
+    implicit none 
+    integer(psb_ipk_)  :: val
+
+    val = amg_l1_jac_
+  end function z_l1_jac_solver_get_id
+  
+end module amg_z_jac_solver

amgprec/amg_z_krm_solver.f90

@@ -436,7 +436,7 @@ contains
     val = "KRM solver"
   end function z_krm_solver_get_fmt
 
-  subroutine z_krm_solver_descr(sv,info,iout,coarse)
+  subroutine z_krm_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
@@ -444,12 +444,14 @@ contains
     class(amg_z_krm_solver_type), intent(in) :: sv
     integer(psb_ipk_), intent(out)             :: info
     integer(psb_ipk_), intent(in), optional    :: iout
-    logical, intent(in), optional       :: coarse
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional  :: prefix
 
     ! Local variables
     integer(psb_ipk_)      :: err_act
     character(len=20), parameter :: name='amg_z_krm_solver_descr'
     integer(psb_ipk_) :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -458,23 +460,22 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
 
     if (sv%global) then
-      write(iout_,*) '  Krylov solver (global)'
+      write(iout_,*) trim(prefix_), '  Krylov solver (global)'
     else
-      write(iout_,*) '  Krylov solver (local) '
+      write(iout_,*) trim(prefix_), '  Krylov solver (local) '
     end if
-    write(iout_,*) '    method: ',sv%method
-    write(iout_,*) '     kprec: ',sv%kprec
-    if (sv%i_sub_solve > 0) then
-      write(iout_,*) ' sub_solve: ',amg_fact_names(sv%i_sub_solve)
-    else
-      write(iout_,*) ' sub_solve: ',sv%sub_solve
-    end if
-    write(iout_,*) '     itmax: ',sv%itmax
-    write(iout_,*) '       eps: ',sv%eps
-    write(iout_,*) '    fillin: ',sv%fillin
-
+    write(iout_,*) trim(prefix_), '    method: ',sv%method
+    write(iout_,*) trim(prefix_), '     kprec: ',sv%kprec
+    call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
+    write(iout_,*) trim(prefix_), '     itmax: ',sv%itmax
+    write(iout_,*) trim(prefix_), '       eps: ',sv%eps
 
     call psb_erractionrestore(err_act)
     return

amgprec/amg_z_mumps_solver.F90

@@ -78,7 +78,8 @@ module amg_z_mumps_solver
     !
     ! Controls to be set before MUMPS instantiation:
     !
-    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: LOCAL   1==amg_global_solver_: GLOBAL
+    ! IPAR(1) : MUMPS_LOC_GLOB   0==amg_local_solver_: 'LOCAL_SOLVER
+    !                            1==amg_global_solver_: 'GLOBAL_SOLVER'
     ! IPAR(2) : MUMPS_PRINT_ERR  print verbosity (see MUMPS)
     ! IPAR(3) : MUMPS_SYM        0: non-symmetric   2: symmetric
     integer(psb_ipk_), dimension(3) :: ipar
@@ -313,22 +314,24 @@ subroutine z_mumps_solver_finalize(sv)
 
 end subroutine z_mumps_solver_finalize
 
-subroutine z_mumps_solver_descr(sv,info,iout,coarse)
+subroutine z_mumps_solver_descr(sv,info,iout,coarse,prefix)
 
   Implicit None
 
   ! Arguments
   class(amg_z_mumps_solver_type), intent(in) :: sv
-  integer(psb_ipk_), intent(out)                     :: info
-  integer(psb_ipk_), intent(in), optional            :: iout
-  logical, intent(in), optional       :: coarse
-
+  integer(psb_ipk_), intent(out)               :: info
+  integer(psb_ipk_), intent(in), optional      :: iout
+  logical, intent(in), optional                :: coarse
+  character(len=*), intent(in), optional       :: prefix
+      
   ! Local variables
   integer(psb_ipk_)   :: err_act
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: me, np
   character(len=20), parameter :: name='amg_z_mumps_solver_descr'
   integer(psb_ipk_) :: iout_
+  character(1024)    :: prefix_
 
   call psb_erractionsave(err_act)
   info = psb_success_
@@ -337,8 +340,13 @@ subroutine z_mumps_solver_descr(sv,info,iout,coarse)
   else
     iout_ = psb_out_unit
   endif
+  if (present(prefix)) then
+    prefix_ = prefix
+  else
+    prefix_ = ""
+  end if
 
-  write(iout_,*) '  MUMPS  Solver. '
+  write(iout_,*) trim(prefix_), '  MUMPS  Solver. '
 
   call psb_erractionrestore(err_act)
   return

amgprec/amg_z_onelev_mod.f90

@@ -187,8 +187,10 @@ module amg_z_onelev_mod
     procedure, pass(lv) :: clone   => z_base_onelev_clone
     procedure, pass(lv) :: cnv     => amg_z_base_onelev_cnv
     procedure, pass(lv) :: descr   => amg_z_base_onelev_descr
+    procedure, pass(lv) :: memory_use  => amg_z_base_onelev_memory_use
     procedure, pass(lv) :: default => z_base_onelev_default
     procedure, pass(lv) :: free    => amg_z_base_onelev_free
+    procedure, pass(lv) :: free_smoothers => amg_z_base_onelev_free_smoothers
     procedure, pass(lv) :: nullify => z_base_onelev_nullify
     procedure, pass(lv) :: check => amg_z_base_onelev_check
     procedure, pass(lv) :: dump  => amg_z_base_onelev_dump
@@ -257,7 +259,7 @@ module amg_z_onelev_mod
   end interface
 
   interface
-    subroutine amg_z_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity)
+    subroutine amg_z_base_onelev_descr(lv,il,nl,ilmin,info,iout, verbosity,prefix)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
            & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
            & psb_ipk_, psb_epk_, psb_desc_type
@@ -268,9 +270,27 @@ module amg_z_onelev_mod
       integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_z_base_onelev_descr
   end interface
 
+  interface
+    subroutine amg_z_base_onelev_memory_use(lv,il,nl,ilmin,info,iout,verbosity, prefix,global)
+      import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
+           & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      Implicit None
+      ! Arguments
+      class(amg_z_onelev_type), intent(in)    :: lv
+      integer(psb_ipk_), intent(in)           :: il,nl,ilmin
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_z_base_onelev_memory_use
+  end interface
+
   interface
     subroutine amg_z_base_onelev_cnv(lv,info,amold,vmold,imold)
       import :: amg_z_onelev_type, psb_z_base_vect_type, psb_dpk_, &
@@ -284,7 +304,7 @@ module amg_z_onelev_mod
     end subroutine amg_z_base_onelev_cnv
   end interface
 
-interface
+  interface
     subroutine amg_z_base_onelev_free(lv,info)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
            & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
@@ -296,6 +316,18 @@ interface
     end subroutine amg_z_base_onelev_free
   end interface
 
+  interface
+    subroutine amg_z_base_onelev_free_smoothers(lv,info)
+      import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &
+           & psb_zlinmap_type, psb_dpk_, amg_z_onelev_type, &
+           & psb_ipk_, psb_epk_, psb_desc_type
+      implicit none
+
+      class(amg_z_onelev_type), intent(inout) :: lv
+      integer(psb_ipk_), intent(out)                :: info
+    end subroutine amg_z_base_onelev_free_smoothers
+  end interface
+
   interface
     subroutine amg_z_base_onelev_check(lv,info)
       import :: psb_zspmat_type, psb_z_vect_type, psb_z_base_vect_type, &

amgprec/amg_z_prec_type.f90

@@ -135,8 +135,11 @@ module amg_z_prec_type
     procedure, pass(prec)               :: build        => amg_zprecbld
     procedure, pass(prec)               :: hierarchy_build   => amg_z_hierarchy_bld
     procedure, pass(prec)               :: hierarchy_rebuild => amg_z_hierarchy_rebld
+    procedure, pass(prec)               :: hierarchy_free    => amg_z_hierarchy_free    
     procedure, pass(prec)               :: smoothers_build   => amg_z_smoothers_bld
+    procedure, pass(prec)               :: smoothers_free    => amg_z_smoothers_free
     procedure, pass(prec)               :: descr        =>  amg_zfile_prec_descr
+    procedure, pass(prec)               :: memory_use   =>  amg_zfile_prec_memory_use
   end type amg_zprec_type
 
   private :: amg_z_dump, amg_z_get_compl,  amg_z_cmp_compl,&
@@ -155,18 +158,35 @@ module amg_z_prec_type
 
 
   interface amg_precdescr
-    subroutine amg_zfile_prec_descr(prec,info,iout,root,verbosity)
+    subroutine amg_zfile_prec_descr(prec,info,iout,root,verbosity,prefix)
       import :: amg_zprec_type, psb_ipk_
       implicit none
       ! Arguments
-      class(amg_zprec_type), intent(in)      :: prec
-      integer(psb_ipk_), intent(out) :: info
+      class(amg_zprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
       integer(psb_ipk_), intent(in), optional :: iout
       integer(psb_ipk_), intent(in), optional :: root
       integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
     end subroutine amg_zfile_prec_descr
   end interface
 
+  
+  interface amg_memory_use
+    subroutine amg_zfile_prec_memory_use(prec,info,iout,root,verbosity,prefix,global)
+      import :: amg_zprec_type, psb_ipk_
+      implicit none
+      ! Arguments
+      class(amg_zprec_type), intent(in)     :: prec
+      integer(psb_ipk_), intent(out)          :: info
+      integer(psb_ipk_), intent(in), optional :: iout
+      integer(psb_ipk_), intent(in), optional :: root
+      integer(psb_ipk_), intent(in), optional :: verbosity
+      character(len=*), intent(in), optional  :: prefix
+      logical, intent(in), optional           :: global
+    end subroutine amg_zfile_prec_memory_use
+  end interface
+
   interface amg_sizeof
     module procedure amg_zprec_sizeof
   end interface
@@ -344,6 +364,14 @@ module amg_z_prec_type
     end subroutine amg_z_smoothers_bld
   end interface amg_smoothers_bld
 
+  interface amg_smoothers_free
+    module procedure  amg_z_smoothers_free
+  end interface amg_smoothers_free
+
+  interface amg_hierarchy_free
+    module procedure amg_z_hierarchy_free
+  end interface amg_hierarchy_free
+
 contains
   !
   ! Function returning a pointer to the smoother
@@ -617,6 +645,68 @@ contains
 
   end subroutine amg_z_prec_free
 
+  subroutine amg_z_smoothers_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_zprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_z_smoothers_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    if (allocated(prec%precv)) then
+      do i=1,size(prec%precv)
+        call prec%precv(i)%free_smoothers(info)
+      end do
+    end if
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_z_smoothers_free
+
+  subroutine amg_z_hierarchy_free(prec,info)
+
+    implicit none
+
+    ! Arguments
+    class(amg_zprec_type), intent(inout) :: prec
+    integer(psb_ipk_), intent(out)        :: info
+
+    ! Local variables
+    integer(psb_ipk_)   :: me,err_act,i
+    character(len=20)   :: name
+
+    info=psb_success_
+    name = 'amg_z_hierarchy_free'
+    call psb_erractionsave(err_act)
+    if (psb_errstatus_fatal()) then
+      info = psb_err_internal_error_; goto 9999
+    end if
+
+    me=-1
+    write(0,*) 'Missing implementation '
+
+    call psb_erractionrestore(err_act)
+    return
+
+9999 call psb_error_handler(err_act)
+    return
+
+  end subroutine amg_z_hierarchy_free
 
 
   !

amgprec/amg_z_slu_solver.F90

@@ -385,20 +385,22 @@ contains
   
   end subroutine z_slu_solver_finalize
 
-  subroutine z_slu_solver_descr(sv,info,iout,coarse)
+  subroutine z_slu_solver_descr(sv,info,iout,coarse,prefix)
 
     Implicit None
 
     ! Arguments
     class(amg_z_slu_solver_type), intent(in) :: sv
-    integer, intent(out)                     :: info
-    integer, intent(in), optional            :: iout
-    logical, intent(in), optional       :: coarse
+    integer, intent(out)                       :: info
+    integer, intent(in), optional              :: iout
+    logical, intent(in), optional              :: coarse
+    character(len=*), intent(in), optional     :: prefix
 
     ! Local variables
     integer      :: err_act
     character(len=20), parameter :: name='amg_z_slu_solver_descr'
     integer :: iout_
+    character(1024)    :: prefix_
 
     call psb_erractionsave(err_act)
     info = psb_success_
@@ -407,8 +409,13 @@ contains
     else
       iout_ = psb_out_unit
     endif
+    if (present(prefix)) then
+      prefix_ = prefix
+    else
+      prefix_ = ""
+    end if
     
-    write(iout_,*) '  SuperLU Sparse Factorization Solver. '
+    write(iout_,*) trim(prefix_), '  SuperLU Sparse Factorization Solver. '
 
     call psb_erractionrestore(err_act)
     return