Take out print_times from sample

Makefile

@@ -3,9 +3,9 @@ include Make.inc
 
 all:  objs lib
 
-objs: amgp cbnd
+objs: libdir amgp cbnd
 
-lib: libdir objs
+lib:  objs
 	cd amgprec && $(MAKE) lib
 	cd cbind && $(MAKE)  lib
 

amgprec/Makefile

@@ -11,7 +11,7 @@ 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_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 \
@@ -22,7 +22,7 @@ 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_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 +33,7 @@ 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 +43,7 @@ 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 \
@@ -155,7 +155,7 @@ 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
@@ -166,7 +166,7 @@ amg_dprecinit.o amg_dprecset.o: amg_d_diag_solver.o amg_d_ilu_solver.o \
 	        amg_d_id_solver.o amg_d_slu_solver.o amg_d_sludist_solver.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
@@ -176,7 +176,7 @@ 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
@@ -186,7 +186,7 @@ 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

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_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

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_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

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_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

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_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

amgprec/impl/aggregator/MatchBoxPC.cpp

@@ -42,7 +42,6 @@
 #include <stdlib.h>
 #if !defined(SERIAL_MPI)
 #include <mpi.h>
-#endif
 
 #include "MatchBoxPC.h"
 #ifdef __cplusplus
@@ -127,3 +126,4 @@ void sMatchBoxPC(MilanLongInt NLVer, MilanLongInt NLEdge,
 #ifdef __cplusplus
 }
 #endif
+#endif

amgprec/impl/aggregator/MatchBoxPC.h

@@ -78,6 +78,8 @@ const int BundleTag = 9;  // Predefined tag
 
 static vector<MilanLongInt> DEFAULT_VECTOR;
 
+#if !defined(SERIAL_MPI)
+
 // MPI type map
 template <typename T>
 MPI_Datatype TypeMap();
@@ -89,6 +91,7 @@ template <>
 inline MPI_Datatype TypeMap<double>() { return MPI_DOUBLE; }
 template <>
 inline MPI_Datatype TypeMap<float>() { return MPI_FLOAT; }
+#endif
 
 #ifdef __cplusplus
 extern "C"

amgprec/impl/aggregator/clean.cpp

@@ -1,6 +1,7 @@
 #include "MatchBoxPC.h"
 
 // TODO comment
+#if !defined(SERIAL_MPI)
 
 void clean(MilanLongInt NLVer,
            MilanInt myRank,
@@ -89,3 +90,4 @@ void clean(MilanLongInt NLVer,
         }
     }
 }
+#endif

amgprec/impl/aggregator/computeCandidateMate.cpp

@@ -9,6 +9,8 @@
  * @param edgeLocWeight
  * @return
  */
+#if !defined(SERIAL_MPI)
+
 MilanLongInt firstComputeCandidateMate(MilanLongInt adj1,
                                        MilanLongInt adj2,
                                        MilanLongInt *verLocInd,
@@ -71,3 +73,4 @@ MilanLongInt computeCandidateMate(MilanLongInt adj1,
     
     return w;
 }
+#endif

amgprec/impl/aggregator/parallelComputeCandidateMateB.cpp

@@ -1,4 +1,5 @@
 #include "MatchBoxPC.h"
+#if !defined(SERIAL_MPI)
 
 void PARALLEL_COMPUTE_CANDIDATE_MATE_B(MilanLongInt NLVer,
                                               MilanLongInt *verLocPtr,
@@ -25,3 +26,4 @@ void PARALLEL_COMPUTE_CANDIDATE_MATE_B(MilanLongInt NLVer,
         }
     }
 }
+#endif

amgprec/impl/aggregator/processExposedVertex.cpp

@@ -1,4 +1,5 @@
 #include "MatchBoxPC.h"
+#if !defined(SERIAL_MPI)
 
 void PARALLEL_PROCESS_EXPOSED_VERTEX_B(MilanLongInt NLVer,
                                        MilanLongInt *candidateMate,
@@ -193,3 +194,4 @@ void PARALLEL_PROCESS_EXPOSED_VERTEX_B(MilanLongInt NLVer,
 
     } // End of parallel region
 }
+#endif

amgprec/impl/aggregator/processMatchedVertices.cpp

@@ -1,5 +1,6 @@
 #include "MatchBoxPC.h"
 
+#if !defined(SERIAL_MPI)
 void processMatchedVertices(
     MilanLongInt NLVer,
     vector<MilanLongInt> &UChunkBeingProcessed,
@@ -292,3 +293,4 @@ void processMatchedVertices(
 #endif
     } // End of parallel region
 }
+#endif

amgprec/impl/aggregator/processMatchedVerticesAndSendMessages.cpp

@@ -1,5 +1,6 @@
 #include "MatchBoxPC.h"
 //#define DEBUG_HANG_
+#if !defined(SERIAL_MPI)
 void processMatchedVerticesAndSendMessages(
 					   MilanLongInt NLVer,
 					   vector<MilanLongInt> &UChunkBeingProcessed,
@@ -306,3 +307,4 @@ void processMatchedVerticesAndSendMessages(
     cout << myRank<<" Done sending messages"<<endl;
 #endif
 }
+#endif

amgprec/impl/aggregator/processMessages.cpp

@@ -1,5 +1,6 @@
 #include "MatchBoxPC.h"
 //#define DEBUG_HANG_
+#if !defined(SERIAL_MPI)
 
 void processMessages(
     MilanLongInt NLVer,
@@ -313,3 +314,4 @@ void processMessages(
     
     return;
 }
+#endif

amgprec/impl/aggregator/sendBundledMessages.cpp

@@ -1,5 +1,5 @@
 #include "MatchBoxPC.h"
-
+#if !defined(SERIAL_MPI)
 void sendBundledMessages(MilanLongInt *numGhostEdges,
                                 MilanInt *BufferSize,
                                 MilanLongInt *Buffer,
@@ -207,3 +207,4 @@ void sendBundledMessages(MilanLongInt *numGhostEdges,
 }
 }
 }
+#endif

amgprec/impl/amg_ccprecset.F90

@@ -84,6 +84,7 @@ subroutine amg_ccprecseti(p,what,val,info,ilev,ilmax,pos,idx)
   use amg_c_diag_solver
   use amg_c_l1_diag_solver
   use amg_c_ilu_solver
+  use amg_c_jac_solver
   use amg_c_id_solver
   use amg_c_gs_solver
   use amg_c_ainv_solver
@@ -308,6 +309,7 @@ subroutine amg_ccprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
   use amg_c_diag_solver
   use amg_c_l1_diag_solver
   use amg_c_ilu_solver
+  use amg_c_jac_solver
   use amg_c_id_solver
   use amg_c_gs_solver
   use amg_c_ainv_solver

amgprec/impl/amg_dcprecset.F90

@@ -84,6 +84,7 @@ subroutine amg_dcprecseti(p,what,val,info,ilev,ilmax,pos,idx)
   use amg_d_diag_solver
   use amg_d_l1_diag_solver
   use amg_d_ilu_solver
+  use amg_d_jac_solver
   use amg_d_id_solver
   use amg_d_gs_solver
   use amg_d_ainv_solver
@@ -314,6 +315,7 @@ subroutine amg_dcprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
   use amg_d_diag_solver
   use amg_d_l1_diag_solver
   use amg_d_ilu_solver
+  use amg_d_jac_solver
   use amg_d_id_solver
   use amg_d_gs_solver
   use amg_d_ainv_solver

amgprec/impl/amg_scprecset.F90

@@ -84,6 +84,7 @@ subroutine amg_scprecseti(p,what,val,info,ilev,ilmax,pos,idx)
   use amg_s_diag_solver
   use amg_s_l1_diag_solver
   use amg_s_ilu_solver
+  use amg_s_jac_solver
   use amg_s_id_solver
   use amg_s_gs_solver
   use amg_s_ainv_solver
@@ -308,6 +309,7 @@ subroutine amg_scprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
   use amg_s_diag_solver
   use amg_s_l1_diag_solver
   use amg_s_ilu_solver
+  use amg_s_jac_solver
   use amg_s_id_solver
   use amg_s_gs_solver
   use amg_s_ainv_solver

amgprec/impl/amg_zcprecset.F90

@@ -84,6 +84,7 @@ subroutine amg_zcprecseti(p,what,val,info,ilev,ilmax,pos,idx)
   use amg_z_diag_solver
   use amg_z_l1_diag_solver
   use amg_z_ilu_solver
+  use amg_z_jac_solver
   use amg_z_id_solver
   use amg_z_gs_solver
   use amg_z_ainv_solver
@@ -314,6 +315,7 @@ subroutine amg_zcprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
   use amg_z_diag_solver
   use amg_z_l1_diag_solver
   use amg_z_ilu_solver
+  use amg_z_jac_solver
   use amg_z_id_solver
   use amg_z_gs_solver
   use amg_z_ainv_solver

amgprec/impl/level/amg_c_base_onelev_csetc.F90

@@ -42,10 +42,13 @@ subroutine amg_c_base_onelev_csetc(lv,what,val,info,pos,idx)
   use amg_c_base_aggregator_mod
   use amg_c_dec_aggregator_mod
   use amg_c_symdec_aggregator_mod
+#if !defined(SERIAL_MPI)
+#endif
   use amg_c_jac_smoother
   use amg_c_as_smoother
   use amg_c_diag_solver
   use amg_c_l1_diag_solver
+  use amg_c_jac_solver
   use amg_c_ilu_solver
   use amg_c_id_solver
   use amg_c_gs_solver
@@ -78,6 +81,8 @@ subroutine amg_c_base_onelev_csetc(lv,what,val,info,pos,idx)
   type(amg_c_as_smoother_type)     ::  amg_c_as_smoother_mold
   type(amg_c_diag_solver_type)     ::  amg_c_diag_solver_mold
   type(amg_c_l1_diag_solver_type)  ::  amg_c_l1_diag_solver_mold
+  type(amg_c_jac_solver_type)      ::  amg_c_jac_solver_mold
+  type(amg_c_l1_jac_solver_type)   ::  amg_c_l1_jac_solver_mold
   type(amg_c_ilu_solver_type)      ::  amg_c_ilu_solver_mold
   type(amg_c_id_solver_type)       ::  amg_c_id_solver_mold
   type(amg_c_gs_solver_type)       ::  amg_c_gs_solver_mold
@@ -188,8 +193,13 @@ subroutine amg_c_base_onelev_csetc(lv,what,val,info,pos,idx)
     case ('DIAG')
       call lv%set(amg_c_diag_solver_mold,info,pos=pos)
 
+    case ('JACOBI')
+      call lv%set(amg_c_jac_solver_mold,info,pos=pos)
+
     case ('L1-DIAG')
       call lv%set(amg_c_l1_diag_solver_mold,info,pos=pos)
+    case ('L1-JACOBI')
+      call lv%set(amg_c_l1_jac_solver_mold,info,pos=pos)
 
     case ('GS','FGS','FWGS')
       call lv%set(amg_c_gs_solver_mold,info,pos=pos)
@@ -238,17 +248,27 @@ subroutine amg_c_base_onelev_csetc(lv,what,val,info,pos,idx)
       if (info == 0) deallocate(lv%aggr,stat=info)
       if (info /= 0) then
         info = psb_err_internal_error_
+        call psb_errpush(info,name,a_err='aggregator deallocation?')
+        goto 9999
         return
       end if
     end if
 
     select case(val)
-    case('DEC')
+    case('DEC','DECOUPLED')
       allocate(amg_c_dec_aggregator_type :: lv%aggr, stat=info)
     case('SYMDEC')
       allocate(amg_c_symdec_aggregator_type :: lv%aggr, stat=info)
-    case default
+#if !defined(SERIAL_MPI)
+#endif
+  case default
       info =  psb_err_internal_error_
+#if !defined(SERIAL_MPI)
+      call psb_errpush(info,name,a_err='Unsupported PAR_AGGR_ALG')
+#else
+      call psb_errpush(info,name,a_err='PAR_AGGR_ALG unsupported (SERIAL_MPI on)')
+#endif
+      goto 9999
     end select
     if (info == psb_success_) call lv%aggr%default()
 

amgprec/impl/level/amg_d_base_onelev_csetc.F90

@@ -42,11 +42,14 @@ subroutine amg_d_base_onelev_csetc(lv,what,val,info,pos,idx)
   use amg_d_base_aggregator_mod
   use amg_d_dec_aggregator_mod
   use amg_d_symdec_aggregator_mod
+#if !defined(SERIAL_MPI)
   use amg_d_parmatch_aggregator_mod
+#endif
   use amg_d_jac_smoother
   use amg_d_as_smoother
   use amg_d_diag_solver
   use amg_d_l1_diag_solver
+  use amg_d_jac_solver
   use amg_d_ilu_solver
   use amg_d_id_solver
   use amg_d_gs_solver
@@ -85,6 +88,8 @@ subroutine amg_d_base_onelev_csetc(lv,what,val,info,pos,idx)
   type(amg_d_as_smoother_type)     ::  amg_d_as_smoother_mold
   type(amg_d_diag_solver_type)     ::  amg_d_diag_solver_mold
   type(amg_d_l1_diag_solver_type)  ::  amg_d_l1_diag_solver_mold
+  type(amg_d_jac_solver_type)      ::  amg_d_jac_solver_mold
+  type(amg_d_l1_jac_solver_type)   ::  amg_d_l1_jac_solver_mold
   type(amg_d_ilu_solver_type)      ::  amg_d_ilu_solver_mold
   type(amg_d_id_solver_type)       ::  amg_d_id_solver_mold
   type(amg_d_gs_solver_type)       ::  amg_d_gs_solver_mold
@@ -201,8 +206,13 @@ subroutine amg_d_base_onelev_csetc(lv,what,val,info,pos,idx)
     case ('DIAG')
       call lv%set(amg_d_diag_solver_mold,info,pos=pos)
 
+    case ('JACOBI')
+      call lv%set(amg_d_jac_solver_mold,info,pos=pos)
+
     case ('L1-DIAG')
       call lv%set(amg_d_l1_diag_solver_mold,info,pos=pos)
+    case ('L1-JACOBI')
+      call lv%set(amg_d_l1_jac_solver_mold,info,pos=pos)
 
     case ('GS','FGS','FWGS')
       call lv%set(amg_d_gs_solver_mold,info,pos=pos)
@@ -259,19 +269,29 @@ subroutine amg_d_base_onelev_csetc(lv,what,val,info,pos,idx)
       if (info == 0) deallocate(lv%aggr,stat=info)
       if (info /= 0) then
         info = psb_err_internal_error_
+        call psb_errpush(info,name,a_err='aggregator deallocation?')
+        goto 9999
         return
       end if
     end if
 
     select case(val)
-    case('DEC')
+    case('DEC','DECOUPLED')
       allocate(amg_d_dec_aggregator_type :: lv%aggr, stat=info)
     case('SYMDEC')
       allocate(amg_d_symdec_aggregator_type :: lv%aggr, stat=info)
+#if !defined(SERIAL_MPI)
     case('COUP','COUPLED')
       allocate(amg_d_parmatch_aggregator_type :: lv%aggr, stat=info)
-    case default
+#endif
+  case default
       info =  psb_err_internal_error_
+#if !defined(SERIAL_MPI)
+      call psb_errpush(info,name,a_err='Unsupported PAR_AGGR_ALG')
+#else
+      call psb_errpush(info,name,a_err='PAR_AGGR_ALG unsupported (SERIAL_MPI on)')
+#endif
+      goto 9999
     end select
     if (info == psb_success_) call lv%aggr%default()
 

amgprec/impl/level/amg_s_base_onelev_csetc.F90

@@ -42,11 +42,14 @@ subroutine amg_s_base_onelev_csetc(lv,what,val,info,pos,idx)
   use amg_s_base_aggregator_mod
   use amg_s_dec_aggregator_mod
   use amg_s_symdec_aggregator_mod
+#if !defined(SERIAL_MPI)
   use amg_s_parmatch_aggregator_mod
+#endif
   use amg_s_jac_smoother
   use amg_s_as_smoother
   use amg_s_diag_solver
   use amg_s_l1_diag_solver
+  use amg_s_jac_solver
   use amg_s_ilu_solver
   use amg_s_id_solver
   use amg_s_gs_solver
@@ -79,6 +82,8 @@ subroutine amg_s_base_onelev_csetc(lv,what,val,info,pos,idx)
   type(amg_s_as_smoother_type)     ::  amg_s_as_smoother_mold
   type(amg_s_diag_solver_type)     ::  amg_s_diag_solver_mold
   type(amg_s_l1_diag_solver_type)  ::  amg_s_l1_diag_solver_mold
+  type(amg_s_jac_solver_type)      ::  amg_s_jac_solver_mold
+  type(amg_s_l1_jac_solver_type)   ::  amg_s_l1_jac_solver_mold
   type(amg_s_ilu_solver_type)      ::  amg_s_ilu_solver_mold
   type(amg_s_id_solver_type)       ::  amg_s_id_solver_mold
   type(amg_s_gs_solver_type)       ::  amg_s_gs_solver_mold
@@ -189,8 +194,13 @@ subroutine amg_s_base_onelev_csetc(lv,what,val,info,pos,idx)
     case ('DIAG')
       call lv%set(amg_s_diag_solver_mold,info,pos=pos)
 
+    case ('JACOBI')
+      call lv%set(amg_s_jac_solver_mold,info,pos=pos)
+
     case ('L1-DIAG')
       call lv%set(amg_s_l1_diag_solver_mold,info,pos=pos)
+    case ('L1-JACOBI')
+      call lv%set(amg_s_l1_jac_solver_mold,info,pos=pos)
 
     case ('GS','FGS','FWGS')
       call lv%set(amg_s_gs_solver_mold,info,pos=pos)
@@ -239,19 +249,29 @@ subroutine amg_s_base_onelev_csetc(lv,what,val,info,pos,idx)
       if (info == 0) deallocate(lv%aggr,stat=info)
       if (info /= 0) then
         info = psb_err_internal_error_
+        call psb_errpush(info,name,a_err='aggregator deallocation?')
+        goto 9999
         return
       end if
     end if
 
     select case(val)
-    case('DEC')
+    case('DEC','DECOUPLED')
       allocate(amg_s_dec_aggregator_type :: lv%aggr, stat=info)
     case('SYMDEC')
       allocate(amg_s_symdec_aggregator_type :: lv%aggr, stat=info)
+#if !defined(SERIAL_MPI)
     case('COUP','COUPLED')
       allocate(amg_s_parmatch_aggregator_type :: lv%aggr, stat=info)
-    case default
+#endif
+  case default
       info =  psb_err_internal_error_
+#if !defined(SERIAL_MPI)
+      call psb_errpush(info,name,a_err='Unsupported PAR_AGGR_ALG')
+#else
+      call psb_errpush(info,name,a_err='PAR_AGGR_ALG unsupported (SERIAL_MPI on)')
+#endif
+      goto 9999
     end select
     if (info == psb_success_) call lv%aggr%default()
 

amgprec/impl/level/amg_z_base_onelev_csetc.F90

@@ -42,10 +42,13 @@ subroutine amg_z_base_onelev_csetc(lv,what,val,info,pos,idx)
   use amg_z_base_aggregator_mod
   use amg_z_dec_aggregator_mod
   use amg_z_symdec_aggregator_mod
+#if !defined(SERIAL_MPI)
+#endif
   use amg_z_jac_smoother
   use amg_z_as_smoother
   use amg_z_diag_solver
   use amg_z_l1_diag_solver
+  use amg_z_jac_solver
   use amg_z_ilu_solver
   use amg_z_id_solver
   use amg_z_gs_solver
@@ -84,6 +87,8 @@ subroutine amg_z_base_onelev_csetc(lv,what,val,info,pos,idx)
   type(amg_z_as_smoother_type)     ::  amg_z_as_smoother_mold
   type(amg_z_diag_solver_type)     ::  amg_z_diag_solver_mold
   type(amg_z_l1_diag_solver_type)  ::  amg_z_l1_diag_solver_mold
+  type(amg_z_jac_solver_type)      ::  amg_z_jac_solver_mold
+  type(amg_z_l1_jac_solver_type)   ::  amg_z_l1_jac_solver_mold
   type(amg_z_ilu_solver_type)      ::  amg_z_ilu_solver_mold
   type(amg_z_id_solver_type)       ::  amg_z_id_solver_mold
   type(amg_z_gs_solver_type)       ::  amg_z_gs_solver_mold
@@ -200,8 +205,13 @@ subroutine amg_z_base_onelev_csetc(lv,what,val,info,pos,idx)
     case ('DIAG')
       call lv%set(amg_z_diag_solver_mold,info,pos=pos)
 
+    case ('JACOBI')
+      call lv%set(amg_z_jac_solver_mold,info,pos=pos)
+
     case ('L1-DIAG')
       call lv%set(amg_z_l1_diag_solver_mold,info,pos=pos)
+    case ('L1-JACOBI')
+      call lv%set(amg_z_l1_jac_solver_mold,info,pos=pos)
 
     case ('GS','FGS','FWGS')
       call lv%set(amg_z_gs_solver_mold,info,pos=pos)
@@ -258,17 +268,27 @@ subroutine amg_z_base_onelev_csetc(lv,what,val,info,pos,idx)
       if (info == 0) deallocate(lv%aggr,stat=info)
       if (info /= 0) then
         info = psb_err_internal_error_
+        call psb_errpush(info,name,a_err='aggregator deallocation?')
+        goto 9999
         return
       end if
     end if
 
     select case(val)
-    case('DEC')
+    case('DEC','DECOUPLED')
       allocate(amg_z_dec_aggregator_type :: lv%aggr, stat=info)
     case('SYMDEC')
       allocate(amg_z_symdec_aggregator_type :: lv%aggr, stat=info)
-    case default
+#if !defined(SERIAL_MPI)
+#endif
+  case default
       info =  psb_err_internal_error_
+#if !defined(SERIAL_MPI)
+      call psb_errpush(info,name,a_err='Unsupported PAR_AGGR_ALG')
+#else
+      call psb_errpush(info,name,a_err='PAR_AGGR_ALG unsupported (SERIAL_MPI on)')
+#endif
+      goto 9999
     end select
     if (info == psb_success_) call lv%aggr%default()
 

amgprec/impl/solver/Makefile

@@ -302,7 +302,43 @@ amg_z_invk_solver_clone.o \
 amg_z_invk_solver_clone_settings.o \
 amg_z_invk_solver_cseti.o \
 amg_z_invk_solver_descr.o \
-amg_z_krm_solver_impl.o 
+amg_z_krm_solver_impl.o \
+amg_c_jac_solver_clone_settings.o \
+amg_c_jac_solver_clear_data.o \
+amg_c_jac_solver_cnv.o \
+amg_c_jac_solver_clone.o \
+amg_c_jac_solver_dmp.o \
+amg_c_jac_solver_apply_vect.o \
+amg_c_jac_solver_apply.o \
+amg_c_jac_solver_bld.o \
+amg_c_l1_jac_solver_bld.o \
+amg_z_jac_solver_clone_settings.o \
+amg_z_jac_solver_clear_data.o \
+amg_z_jac_solver_cnv.o \
+amg_z_jac_solver_clone.o \
+amg_z_jac_solver_dmp.o \
+amg_z_jac_solver_apply_vect.o \
+amg_z_jac_solver_apply.o \
+amg_z_jac_solver_bld.o \
+amg_z_l1_jac_solver_bld.o \
+amg_s_jac_solver_clone_settings.o \
+amg_s_jac_solver_clear_data.o \
+amg_s_jac_solver_cnv.o \
+amg_s_jac_solver_clone.o \
+amg_s_jac_solver_dmp.o \
+amg_s_jac_solver_apply_vect.o \
+amg_s_jac_solver_apply.o \
+amg_s_jac_solver_bld.o \
+amg_s_l1_jac_solver_bld.o \
+amg_d_jac_solver_clone_settings.o \
+amg_d_jac_solver_clear_data.o \
+amg_d_jac_solver_cnv.o \
+amg_d_jac_solver_clone.o \
+amg_d_jac_solver_dmp.o \
+amg_d_jac_solver_apply_vect.o \
+amg_d_jac_solver_apply.o \
+amg_d_jac_solver_bld.o \
+amg_d_l1_jac_solver_bld.o 
 
 LIBNAME=libamg_prec.a
 

amgprec/impl/solver/amg_c_base_ainv_solver_cnv.f90

@@ -47,7 +47,6 @@ subroutine amg_c_base_ainv_solver_cnv(sv,info,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional  :: imold
 
   !local
-  integer(psb_ipk_)  :: i, j, il1, iln, lname, lev
   integer(psb_ipk_)  :: iam, np
   type(psb_ctxt_type)   :: ctxt
   character(len=80)  :: prefix_

amgprec/impl/solver/amg_c_diag_solver_bld.f90

@@ -132,8 +132,7 @@ subroutine amg_c_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional   :: imold
   ! Local variables
   integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
-  complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
-  complex(psb_spk_), allocatable :: tdb(:)
+  complex(psb_spk_), allocatable :: tdb(:), tx(:), ty(:) 
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
   character(len=20)   :: name='c_l1_diag_solver_bld', ch_err
@@ -151,12 +150,15 @@ subroutine amg_c_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   n_row  = desc_a%get_local_rows()
   nrow_a = a%get_nrows()
 
+  tx   = a%get_diag(info)
   sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
   if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
   if (present(b)) then 
     tdb=b%arwsum(info)
+    ty =b%get_diag(info)
     if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
-    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
   end if
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_from_subroutine_,name,a_err='arwsum')

amgprec/impl/solver/amg_c_jac_solver_apply.f90

@@ -0,0 +1,352 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_c_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,info,init,initu)
+
+  use psb_base_mod
+  use amg_c_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_apply
+  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(:)
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  complex(psb_spk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='c_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='complex(psb_spk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => aux(1:n_col), ty => aux(n_col+1:2*n_col))
+        select case (init_)
+        case('Z')
+
+          call inner_mlt(n_row,cone,sv%dv%v%v,x,czero,ty,trans=trans_)
+
+        case('Y')
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_geaxpby(cone,y,czero,ty,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,cone,sv%dv%v%v,tx,czero,ty,trans=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_geaxpby(cone,initu,czero,ty,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,cone,sv%dv%v%v,tx,czero,ty,trans=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call inner_mlt(n_row,cone,sv%dv%v%v,tx,cone,ty,trans=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+contains
+  subroutine inner_mlt(n_row,alpha,d,x,beta,y,trans)
+    implicit none
+    integer(psb_ipk_),intent(in)   :: n_row
+    complex(psb_spk_), intent(inout) :: d(:)
+    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
+
+    integer(psb_ipk_) :: i
+    
+    if (trans_ == 'C') then 
+      if (beta == czero) then 
+
+        if (alpha == czero) then 
+          y(1:n_row) = czero
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i)
+          end do
+        end if
+
+      else if (beta == cone) then 
+
+        if (alpha == czero) then 
+          !y(1:n_row) = czero
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) + y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -cone) then 
+
+        if (alpha == czero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) - y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == czero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    else if (trans_ /= 'C') then 
+
+      if (beta == czero) then 
+
+        if (alpha == czero) then 
+          y(1:n_row) = czero
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i)
+          end do
+        end if
+
+      else if (beta == cone) then 
+
+        if (alpha == czero) then 
+          !y(1:n_row) = czero
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -cone) then 
+
+        if (alpha == czero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) - y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == czero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == cone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -cone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    end if
+
+  end subroutine inner_mlt
+end subroutine amg_c_jac_solver_apply

amgprec/impl/solver/amg_c_jac_solver_apply_vect.f90

@@ -0,0 +1,190 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_c_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,wv,info,init,initu)
+
+  use psb_base_mod
+  use amg_c_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_apply_vect
+  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
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  type(psb_c_vect_type)  :: tx, ty, r
+  complex(psb_spk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='c_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='complex(psb_spk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => wv(1), ty => wv(2))
+        select case (init_)
+        case('Z')
+
+          call ty%mlt(cone,sv%dv,x,czero,info,conjgx=trans_)
+
+        case('Y')
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_geaxpby(cone,y,czero,ty,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(cone,sv%dv,tx,czero,info,conjgx=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_geaxpby(cone,initu,czero,ty,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(cone,sv%dv,tx,czero,info,conjgx=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(cone,x,czero,tx,desc_data,info)
+          call psb_spmm(-cone,sv%a,ty,cone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call ty%mlt(cone,sv%dv,tx,cone,info,conjgx=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+
+end subroutine amg_c_jac_solver_apply_vect

amgprec/impl/solver/amg_c_jac_solver_bld.f90

@@ -0,0 +1,125 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
+  complex(psb_spk_), allocatable :: tdb(:)
+  type(psb_c_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='c_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  sv%d = a%get_diag(info)
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == czero) then 
+      sv%d(i) = cone
+    else
+      sv%d(i) = cone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_jac_solver_bld
+
+

amgprec/impl/solver/amg_c_jac_solver_clear_data.f90

@@ -0,0 +1,65 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_clear_data(sv,info)
+  
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_clear_data
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_jac_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+
+  call sv%a%free()
+  call sv%dv%free(info)
+  if ((info==0).and.allocated(sv%d)) deallocate(sv%d,stat=info)
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_jac_solver_clear_data

amgprec/impl/solver/amg_c_jac_solver_clone.f90

@@ -0,0 +1,88 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_clone(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_clone
+
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  if (allocated(svout)) then
+    call svout%free(info)
+    if (info == psb_success_) deallocate(svout, stat=info)
+  end if
+  if (info == psb_success_) &
+       & allocate(svout, mold=sv, stat=info)
+  if (info /= 0) then 
+    info = psb_err_alloc_dealloc_
+    goto 9999 
+  end if
+
+  select type(svo => svout)
+  class is (amg_c_jac_solver_type)
+    svo%sweeps = sv%sweeps
+    svo%eps    = sv%eps
+    if (info == psb_success_) &
+         & call sv%a%clone(svo%a,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    svo%d = sv%d
+    
+  class default
+    info = psb_err_internal_error_
+  end select
+
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_jac_solver_clone

amgprec/impl/solver/amg_c_jac_solver_clone_settings.f90

@@ -0,0 +1,69 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_clone_settings(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name =>  amg_c_jac_solver_clone_settings
+  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
+  integer(psb_ipk_)  :: err_act
+  character(len=20) :: name='c_jac_solver_clone_settings'
+
+  call psb_erractionsave(err_act)
+
+  select type(svout)
+  class is(amg_c_jac_solver_type)
+    svout%sweeps = sv%sweeps
+    svout%eps    = sv%eps
+    
+  class default    
+    info = psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999 
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_jac_solver_clone_settings

amgprec/impl/solver/amg_c_jac_solver_cnv.f90

@@ -0,0 +1,72 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_cnv(sv,info,amold,vmold,imold)
+
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_cnv
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act, debug_unit, debug_level
+  character(len=20) :: name='c_jac_solver_cnv', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  if ((info==0).and.present(vmold)) call sv%dv%cnv(mold=vmold)
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_jac_solver_cnv

amgprec/impl/solver/amg_c_jac_solver_dmp.f90

@@ -0,0 +1,107 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_jac_solver_dmp
+  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
+  integer(psb_ipk_)   :: i, j, il1, iln, lname, lev
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: iam, np
+  character(len=80)   :: prefix_
+  character(len=120)  :: fname ! len should be at least 20 more than
+  logical :: solver_, global_num_
+  integer(psb_lpk_), allocatable :: iv(:)
+  !  len of prefix_ 
+
+  info = 0
+
+  ctxt = desc%get_context()
+  call psb_info(ctxt,iam,np)
+
+  if (present(solver)) then 
+    solver_ = solver
+  else
+    solver_ = .false. 
+  end if
+  if (present(global_num)) then 
+    global_num_ = global_num
+  else
+    global_num_ = .false. 
+  end if
+
+
+  if (solver_) then 
+    if (present(prefix)) then 
+      prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
+    else
+      prefix_ = "dump_slv_c"
+    end if
+    lname = len_trim(prefix_)
+    fname = trim(prefix_)
+    write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
+    lname = lname + 5
+    
+    if (global_num_) then
+      iv = desc%get_global_indices(owned=.false.)      
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head,iv=iv)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+      
+    else
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+    end if
+  end if
+
+end subroutine amg_c_jac_solver_dmp

amgprec/impl/solver/amg_c_l1_jac_solver_bld.f90

@@ -0,0 +1,128 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_c_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_c_jac_solver, amg_protect_name => amg_c_l1_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  complex(psb_spk_), allocatable :: tdb(:), tx(:),ty(:)
+  type(psb_c_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='c_l1_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+    
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  tx   = a%get_diag(info)
+  sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%arwsum(info)
+    ty =b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == czero) then 
+      sv%d(i) = cone
+    else
+      sv%d(i) = cone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_c_l1_jac_solver_bld
+
+

amgprec/impl/solver/amg_d_base_ainv_solver_cnv.f90

@@ -47,7 +47,6 @@ subroutine amg_d_base_ainv_solver_cnv(sv,info,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional  :: imold
 
   !local
-  integer(psb_ipk_)  :: i, j, il1, iln, lname, lev
   integer(psb_ipk_)  :: iam, np
   type(psb_ctxt_type)   :: ctxt
   character(len=80)  :: prefix_

amgprec/impl/solver/amg_d_diag_solver_bld.f90

@@ -132,8 +132,7 @@ subroutine amg_d_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional   :: imold
   ! Local variables
   integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
-  real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
-  real(psb_dpk_), allocatable :: tdb(:)
+  real(psb_dpk_), allocatable :: tdb(:), tx(:), ty(:) 
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
   character(len=20)   :: name='d_l1_diag_solver_bld', ch_err
@@ -151,12 +150,15 @@ subroutine amg_d_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   n_row  = desc_a%get_local_rows()
   nrow_a = a%get_nrows()
 
+  tx   = a%get_diag(info)
   sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
   if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
   if (present(b)) then 
     tdb=b%arwsum(info)
+    ty =b%get_diag(info)
     if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
-    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
   end if
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_from_subroutine_,name,a_err='arwsum')

amgprec/impl/solver/amg_d_jac_solver_apply.f90

@@ -0,0 +1,352 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_d_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,info,init,initu)
+
+  use psb_base_mod
+  use amg_d_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_apply
+  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(:)
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  real(psb_dpk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='d_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='real(psb_dpk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => aux(1:n_col), ty => aux(n_col+1:2*n_col))
+        select case (init_)
+        case('Z')
+
+          call inner_mlt(n_row,done,sv%dv%v%v,x,dzero,ty,trans=trans_)
+
+        case('Y')
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_geaxpby(done,y,dzero,ty,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,done,sv%dv%v%v,tx,dzero,ty,trans=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_geaxpby(done,initu,dzero,ty,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,done,sv%dv%v%v,tx,dzero,ty,trans=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call inner_mlt(n_row,done,sv%dv%v%v,tx,done,ty,trans=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+contains
+  subroutine inner_mlt(n_row,alpha,d,x,beta,y,trans)
+    implicit none
+    integer(psb_ipk_),intent(in)   :: n_row
+    real(psb_dpk_), intent(inout) :: d(:)
+    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_) :: i
+    
+    if (trans_ == 'C') then 
+      if (beta == dzero) then 
+
+        if (alpha == dzero) then 
+          y(1:n_row) = dzero
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i)
+          end do
+        end if
+
+      else if (beta == done) then 
+
+        if (alpha == dzero) then 
+          !y(1:n_row) = dzero
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) + y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -done) then 
+
+        if (alpha == dzero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) - y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == dzero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    else if (trans_ /= 'C') then 
+
+      if (beta == dzero) then 
+
+        if (alpha == dzero) then 
+          y(1:n_row) = dzero
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i)
+          end do
+        end if
+
+      else if (beta == done) then 
+
+        if (alpha == dzero) then 
+          !y(1:n_row) = dzero
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -done) then 
+
+        if (alpha == dzero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) - y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == dzero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == done) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -done) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    end if
+
+  end subroutine inner_mlt
+end subroutine amg_d_jac_solver_apply

amgprec/impl/solver/amg_d_jac_solver_apply_vect.f90

@@ -0,0 +1,190 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_d_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,wv,info,init,initu)
+
+  use psb_base_mod
+  use amg_d_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_apply_vect
+  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
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  type(psb_d_vect_type)  :: tx, ty, r
+  real(psb_dpk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='d_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='real(psb_dpk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => wv(1), ty => wv(2))
+        select case (init_)
+        case('Z')
+
+          call ty%mlt(done,sv%dv,x,dzero,info,conjgx=trans_)
+
+        case('Y')
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_geaxpby(done,y,dzero,ty,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(done,sv%dv,tx,dzero,info,conjgx=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_geaxpby(done,initu,dzero,ty,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(done,sv%dv,tx,dzero,info,conjgx=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(done,x,dzero,tx,desc_data,info)
+          call psb_spmm(-done,sv%a,ty,done,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call ty%mlt(done,sv%dv,tx,done,info,conjgx=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+
+end subroutine amg_d_jac_solver_apply_vect

amgprec/impl/solver/amg_d_jac_solver_bld.f90

@@ -0,0 +1,125 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
+  real(psb_dpk_), allocatable :: tdb(:)
+  type(psb_d_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='d_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  sv%d = a%get_diag(info)
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == dzero) then 
+      sv%d(i) = done
+    else
+      sv%d(i) = done/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_jac_solver_bld
+
+

amgprec/impl/solver/amg_d_jac_solver_clear_data.f90

@@ -0,0 +1,65 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_clear_data(sv,info)
+  
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_clear_data
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_jac_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+
+  call sv%a%free()
+  call sv%dv%free(info)
+  if ((info==0).and.allocated(sv%d)) deallocate(sv%d,stat=info)
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_jac_solver_clear_data

amgprec/impl/solver/amg_d_jac_solver_clone.f90

@@ -0,0 +1,88 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_clone(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_clone
+
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  if (allocated(svout)) then
+    call svout%free(info)
+    if (info == psb_success_) deallocate(svout, stat=info)
+  end if
+  if (info == psb_success_) &
+       & allocate(svout, mold=sv, stat=info)
+  if (info /= 0) then 
+    info = psb_err_alloc_dealloc_
+    goto 9999 
+  end if
+
+  select type(svo => svout)
+  class is (amg_d_jac_solver_type)
+    svo%sweeps = sv%sweeps
+    svo%eps    = sv%eps
+    if (info == psb_success_) &
+         & call sv%a%clone(svo%a,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    svo%d = sv%d
+    
+  class default
+    info = psb_err_internal_error_
+  end select
+
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_jac_solver_clone

amgprec/impl/solver/amg_d_jac_solver_clone_settings.f90

@@ -0,0 +1,69 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_clone_settings(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name =>  amg_d_jac_solver_clone_settings
+  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
+  integer(psb_ipk_)  :: err_act
+  character(len=20) :: name='d_jac_solver_clone_settings'
+
+  call psb_erractionsave(err_act)
+
+  select type(svout)
+  class is(amg_d_jac_solver_type)
+    svout%sweeps = sv%sweeps
+    svout%eps    = sv%eps
+    
+  class default    
+    info = psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999 
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_jac_solver_clone_settings

amgprec/impl/solver/amg_d_jac_solver_cnv.f90

@@ -0,0 +1,72 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_cnv(sv,info,amold,vmold,imold)
+
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_cnv
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act, debug_unit, debug_level
+  character(len=20) :: name='d_jac_solver_cnv', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  if ((info==0).and.present(vmold)) call sv%dv%cnv(mold=vmold)
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_jac_solver_cnv

amgprec/impl/solver/amg_d_jac_solver_dmp.f90

@@ -0,0 +1,107 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_jac_solver_dmp
+  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
+  integer(psb_ipk_)   :: i, j, il1, iln, lname, lev
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: iam, np
+  character(len=80)   :: prefix_
+  character(len=120)  :: fname ! len should be at least 20 more than
+  logical :: solver_, global_num_
+  integer(psb_lpk_), allocatable :: iv(:)
+  !  len of prefix_ 
+
+  info = 0
+
+  ctxt = desc%get_context()
+  call psb_info(ctxt,iam,np)
+
+  if (present(solver)) then 
+    solver_ = solver
+  else
+    solver_ = .false. 
+  end if
+  if (present(global_num)) then 
+    global_num_ = global_num
+  else
+    global_num_ = .false. 
+  end if
+
+
+  if (solver_) then 
+    if (present(prefix)) then 
+      prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
+    else
+      prefix_ = "dump_slv_d"
+    end if
+    lname = len_trim(prefix_)
+    fname = trim(prefix_)
+    write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
+    lname = lname + 5
+    
+    if (global_num_) then
+      iv = desc%get_global_indices(owned=.false.)      
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head,iv=iv)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+      
+    else
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+    end if
+  end if
+
+end subroutine amg_d_jac_solver_dmp

amgprec/impl/solver/amg_d_l1_jac_solver_bld.f90

@@ -0,0 +1,128 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_d_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_d_jac_solver, amg_protect_name => amg_d_l1_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  real(psb_dpk_), allocatable :: tdb(:), tx(:),ty(:)
+  type(psb_d_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='d_l1_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+    
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  tx   = a%get_diag(info)
+  sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%arwsum(info)
+    ty =b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == dzero) then 
+      sv%d(i) = done
+    else
+      sv%d(i) = done/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_d_l1_jac_solver_bld
+
+

amgprec/impl/solver/amg_s_base_ainv_solver_cnv.f90

@@ -47,7 +47,6 @@ subroutine amg_s_base_ainv_solver_cnv(sv,info,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional  :: imold
 
   !local
-  integer(psb_ipk_)  :: i, j, il1, iln, lname, lev
   integer(psb_ipk_)  :: iam, np
   type(psb_ctxt_type)   :: ctxt
   character(len=80)  :: prefix_

amgprec/impl/solver/amg_s_diag_solver_bld.f90

@@ -132,8 +132,7 @@ subroutine amg_s_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional   :: imold
   ! Local variables
   integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
-  real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
-  real(psb_spk_), allocatable :: tdb(:)
+  real(psb_spk_), allocatable :: tdb(:), tx(:), ty(:) 
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
   character(len=20)   :: name='s_l1_diag_solver_bld', ch_err
@@ -151,12 +150,15 @@ subroutine amg_s_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   n_row  = desc_a%get_local_rows()
   nrow_a = a%get_nrows()
 
+  tx   = a%get_diag(info)
   sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
   if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
   if (present(b)) then 
     tdb=b%arwsum(info)
+    ty =b%get_diag(info)
     if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
-    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
   end if
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_from_subroutine_,name,a_err='arwsum')

amgprec/impl/solver/amg_s_jac_solver_apply.f90

@@ -0,0 +1,352 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_s_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,info,init,initu)
+
+  use psb_base_mod
+  use amg_s_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_apply
+  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(:)
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  real(psb_spk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='s_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='real(psb_spk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => aux(1:n_col), ty => aux(n_col+1:2*n_col))
+        select case (init_)
+        case('Z')
+
+          call inner_mlt(n_row,sone,sv%dv%v%v,x,szero,ty,trans=trans_)
+
+        case('Y')
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_geaxpby(sone,y,szero,ty,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,sone,sv%dv%v%v,tx,szero,ty,trans=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_geaxpby(sone,initu,szero,ty,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,sone,sv%dv%v%v,tx,szero,ty,trans=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call inner_mlt(n_row,sone,sv%dv%v%v,tx,sone,ty,trans=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+contains
+  subroutine inner_mlt(n_row,alpha,d,x,beta,y,trans)
+    implicit none
+    integer(psb_ipk_),intent(in)   :: n_row
+    real(psb_spk_), intent(inout) :: d(:)
+    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_) :: i
+    
+    if (trans_ == 'C') then 
+      if (beta == szero) then 
+
+        if (alpha == szero) then 
+          y(1:n_row) = szero
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i)
+          end do
+        end if
+
+      else if (beta == sone) then 
+
+        if (alpha == szero) then 
+          !y(1:n_row) = szero
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) + y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -sone) then 
+
+        if (alpha == szero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) - y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == szero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = (d(i)) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -(d(i)) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * (d(i)) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    else if (trans_ /= 'C') then 
+
+      if (beta == szero) then 
+
+        if (alpha == szero) then 
+          y(1:n_row) = szero
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i)
+          end do
+        end if
+
+      else if (beta == sone) then 
+
+        if (alpha == szero) then 
+          !y(1:n_row) = szero
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -sone) then 
+
+        if (alpha == szero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) - y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == szero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == sone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -sone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    end if
+
+  end subroutine inner_mlt
+end subroutine amg_s_jac_solver_apply

amgprec/impl/solver/amg_s_jac_solver_apply_vect.f90

@@ -0,0 +1,190 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_s_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,wv,info,init,initu)
+
+  use psb_base_mod
+  use amg_s_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_apply_vect
+  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
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  type(psb_s_vect_type)  :: tx, ty, r
+  real(psb_spk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='s_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='real(psb_spk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => wv(1), ty => wv(2))
+        select case (init_)
+        case('Z')
+
+          call ty%mlt(sone,sv%dv,x,szero,info,conjgx=trans_)
+
+        case('Y')
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_geaxpby(sone,y,szero,ty,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(sone,sv%dv,tx,szero,info,conjgx=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_geaxpby(sone,initu,szero,ty,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(sone,sv%dv,tx,szero,info,conjgx=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(sone,x,szero,tx,desc_data,info)
+          call psb_spmm(-sone,sv%a,ty,sone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call ty%mlt(sone,sv%dv,tx,sone,info,conjgx=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+
+end subroutine amg_s_jac_solver_apply_vect

amgprec/impl/solver/amg_s_jac_solver_bld.f90

@@ -0,0 +1,125 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
+  real(psb_spk_), allocatable :: tdb(:)
+  type(psb_s_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='s_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  sv%d = a%get_diag(info)
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == szero) then 
+      sv%d(i) = sone
+    else
+      sv%d(i) = sone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_jac_solver_bld
+
+

amgprec/impl/solver/amg_s_jac_solver_clear_data.f90

@@ -0,0 +1,65 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_clear_data(sv,info)
+  
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_clear_data
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_jac_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+
+  call sv%a%free()
+  call sv%dv%free(info)
+  if ((info==0).and.allocated(sv%d)) deallocate(sv%d,stat=info)
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_jac_solver_clear_data

amgprec/impl/solver/amg_s_jac_solver_clone.f90

@@ -0,0 +1,88 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_clone(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_clone
+
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  if (allocated(svout)) then
+    call svout%free(info)
+    if (info == psb_success_) deallocate(svout, stat=info)
+  end if
+  if (info == psb_success_) &
+       & allocate(svout, mold=sv, stat=info)
+  if (info /= 0) then 
+    info = psb_err_alloc_dealloc_
+    goto 9999 
+  end if
+
+  select type(svo => svout)
+  class is (amg_s_jac_solver_type)
+    svo%sweeps = sv%sweeps
+    svo%eps    = sv%eps
+    if (info == psb_success_) &
+         & call sv%a%clone(svo%a,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    svo%d = sv%d
+    
+  class default
+    info = psb_err_internal_error_
+  end select
+
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_jac_solver_clone

amgprec/impl/solver/amg_s_jac_solver_clone_settings.f90

@@ -0,0 +1,69 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_clone_settings(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name =>  amg_s_jac_solver_clone_settings
+  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
+  integer(psb_ipk_)  :: err_act
+  character(len=20) :: name='s_jac_solver_clone_settings'
+
+  call psb_erractionsave(err_act)
+
+  select type(svout)
+  class is(amg_s_jac_solver_type)
+    svout%sweeps = sv%sweeps
+    svout%eps    = sv%eps
+    
+  class default    
+    info = psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999 
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_jac_solver_clone_settings

amgprec/impl/solver/amg_s_jac_solver_cnv.f90

@@ -0,0 +1,72 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_cnv(sv,info,amold,vmold,imold)
+
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_cnv
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act, debug_unit, debug_level
+  character(len=20) :: name='s_jac_solver_cnv', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  if ((info==0).and.present(vmold)) call sv%dv%cnv(mold=vmold)
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_jac_solver_cnv

amgprec/impl/solver/amg_s_jac_solver_dmp.f90

@@ -0,0 +1,107 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_jac_solver_dmp
+  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
+  integer(psb_ipk_)   :: i, j, il1, iln, lname, lev
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: iam, np
+  character(len=80)   :: prefix_
+  character(len=120)  :: fname ! len should be at least 20 more than
+  logical :: solver_, global_num_
+  integer(psb_lpk_), allocatable :: iv(:)
+  !  len of prefix_ 
+
+  info = 0
+
+  ctxt = desc%get_context()
+  call psb_info(ctxt,iam,np)
+
+  if (present(solver)) then 
+    solver_ = solver
+  else
+    solver_ = .false. 
+  end if
+  if (present(global_num)) then 
+    global_num_ = global_num
+  else
+    global_num_ = .false. 
+  end if
+
+
+  if (solver_) then 
+    if (present(prefix)) then 
+      prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
+    else
+      prefix_ = "dump_slv_s"
+    end if
+    lname = len_trim(prefix_)
+    fname = trim(prefix_)
+    write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
+    lname = lname + 5
+    
+    if (global_num_) then
+      iv = desc%get_global_indices(owned=.false.)      
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head,iv=iv)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+      
+    else
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+    end if
+  end if
+
+end subroutine amg_s_jac_solver_dmp

amgprec/impl/solver/amg_s_l1_jac_solver_bld.f90

@@ -0,0 +1,128 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_s_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_s_jac_solver, amg_protect_name => amg_s_l1_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  real(psb_spk_), allocatable :: tdb(:), tx(:),ty(:)
+  type(psb_s_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='s_l1_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+    
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  tx   = a%get_diag(info)
+  sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%arwsum(info)
+    ty =b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == szero) then 
+      sv%d(i) = sone
+    else
+      sv%d(i) = sone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_s_l1_jac_solver_bld
+
+

amgprec/impl/solver/amg_z_base_ainv_solver_cnv.f90

@@ -47,7 +47,6 @@ subroutine amg_z_base_ainv_solver_cnv(sv,info,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional  :: imold
 
   !local
-  integer(psb_ipk_)  :: i, j, il1, iln, lname, lev
   integer(psb_ipk_)  :: iam, np
   type(psb_ctxt_type)   :: ctxt
   character(len=80)  :: prefix_

amgprec/impl/solver/amg_z_diag_solver_bld.f90

@@ -132,8 +132,7 @@ subroutine amg_z_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   class(psb_i_base_vect_type), intent(in), optional   :: imold
   ! Local variables
   integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
-  complex(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
-  complex(psb_dpk_), allocatable :: tdb(:)
+  complex(psb_dpk_), allocatable :: tdb(:), tx(:), ty(:) 
   type(psb_ctxt_type) :: ctxt
   integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
   character(len=20)   :: name='z_l1_diag_solver_bld', ch_err
@@ -151,12 +150,15 @@ subroutine amg_z_l1_diag_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
   n_row  = desc_a%get_local_rows()
   nrow_a = a%get_nrows()
 
+  tx   = a%get_diag(info)
   sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
   if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
   if (present(b)) then 
     tdb=b%arwsum(info)
+    ty =b%get_diag(info)
     if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
-    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
   end if
   if (info /= psb_success_) then 
     call psb_errpush(psb_err_from_subroutine_,name,a_err='arwsum')

amgprec/impl/solver/amg_z_jac_solver_apply.f90

@@ -0,0 +1,352 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_z_jac_solver_apply(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,info,init,initu)
+
+  use psb_base_mod
+  use amg_z_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_apply
+  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(:)
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  complex(psb_dpk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='z_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='complex(psb_dpk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => aux(1:n_col), ty => aux(n_col+1:2*n_col))
+        select case (init_)
+        case('Z')
+
+          call inner_mlt(n_row,zone,sv%dv%v%v,x,zzero,ty,trans=trans_)
+
+        case('Y')
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_geaxpby(zone,y,zzero,ty,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,zone,sv%dv%v%v,tx,zzero,ty,trans=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_geaxpby(zone,initu,zzero,ty,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call inner_mlt(n_row,zone,sv%dv%v%v,tx,zzero,ty,trans=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call inner_mlt(n_row,zone,sv%dv%v%v,tx,zone,ty,trans=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+contains
+  subroutine inner_mlt(n_row,alpha,d,x,beta,y,trans)
+    implicit none
+    integer(psb_ipk_),intent(in)   :: n_row
+    complex(psb_dpk_), intent(inout) :: d(:)
+    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
+
+    integer(psb_ipk_) :: i
+    
+    if (trans_ == 'C') then 
+      if (beta == zzero) then 
+
+        if (alpha == zzero) then 
+          y(1:n_row) = zzero
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i)
+          end do
+        end if
+
+      else if (beta == zone) then 
+
+        if (alpha == zzero) then 
+          !y(1:n_row) = zzero
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) + y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -zone) then 
+
+        if (alpha == zzero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) - y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == zzero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = conjg(d(i)) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -conjg(d(i)) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * conjg(d(i)) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    else if (trans_ /= 'C') then 
+
+      if (beta == zzero) then 
+
+        if (alpha == zzero) then 
+          y(1:n_row) = zzero
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i)
+          end do
+        end if
+
+      else if (beta == zone) then 
+
+        if (alpha == zzero) then 
+          !y(1:n_row) = zzero
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + y(i)
+          end do
+        end if
+
+      else if (beta == -zone) then 
+
+        if (alpha == zzero) then 
+          y(1:n_row) = -y(1:n_row)        
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) - y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  - y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) - y(i)
+          end do
+        end if
+
+      else
+
+        if (alpha == zzero) then 
+          y(1:n_row) = beta *y(1:n_row)        
+        else if (alpha == zone) then 
+          do i=1, n_row
+            y(i) = d(i) * x(i) + beta*y(i)
+          end do
+        else if (alpha == -zone) then 
+          do i=1, n_row
+            y(i) = -d(i) * x(i)  + beta*y(i)
+          end do
+        else
+          do i=1, n_row
+            y(i) = alpha * d(i) * x(i) + beta*y(i)
+          end do
+        end if
+
+      end if
+
+    end if
+
+  end subroutine inner_mlt
+end subroutine amg_z_jac_solver_apply

amgprec/impl/solver/amg_z_jac_solver_apply_vect.f90

@@ -0,0 +1,190 @@
+!
+!
+!                             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.
+!
+!
+subroutine amg_z_jac_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,&
+     & work,wv,info,init,initu)
+
+  use psb_base_mod
+  use amg_z_diag_solver
+  use psb_base_krylov_conv_mod, only : log_conv
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_apply_vect
+  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
+  !
+  integer(psb_ipk_)    :: n_row,n_col, sweeps
+  type(psb_z_vect_type)  :: tx, ty, r
+  complex(psb_dpk_), pointer :: aux(:)
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act
+  character           :: trans_, init_
+  real(psb_dpk_)      :: res, resdenum
+  character(len=20)   :: name='z_jac_solver_apply_v'
+
+  call psb_erractionsave(err_act)
+
+  info = psb_success_
+  ctxt = desc_data%get_context()
+  call psb_info(ctxt,me,np)
+
+
+  if (present(init)) then
+    init_ = psb_toupper(init)
+  else
+    init_='Z'
+  end if
+
+  trans_ = psb_toupper(trans)
+  select case(trans_)
+  case('N')
+  case('T','C')
+  case default
+    call psb_errpush(psb_err_iarg_invalid_i_,name)
+    goto 9999
+  end select
+
+
+  
+  n_row = desc_data%get_local_rows()
+  n_col = desc_data%get_local_cols()
+  sweeps = sv%sweeps
+  if (4*n_col <= size(work)) then
+    aux => work(:)
+  else
+    allocate(aux(4*n_col),stat=info)
+    if (info /= psb_success_) then
+      info=psb_err_alloc_request_
+      call psb_errpush(info,name,&
+           & i_err=(/4*n_col,izero,izero,izero,izero/),&
+           & a_err='complex(psb_dpk_)')
+      goto 9999
+    end if
+  endif
+
+  if (sweeps >= 0) then
+      !
+      ! This means we are dealing with a pure Jacobi smoother/solver.
+      !
+      associate(tx => wv(1), ty => wv(2))
+        select case (init_)
+        case('Z')
+
+          call ty%mlt(zone,sv%dv,x,zzero,info,conjgx=trans_)
+
+        case('Y')
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_geaxpby(zone,y,zzero,ty,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(zone,sv%dv,tx,zzero,info,conjgx=trans_)
+
+        case('U')
+          if (.not.present(initu)) then
+            call psb_errpush(psb_err_internal_error_,name,&
+                 & a_err='missing initu to smoother_apply')
+            goto 9999
+          end if
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_geaxpby(zone,initu,zzero,ty,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          call ty%mlt(zone,sv%dv,tx,zzero,info,conjgx=trans_)
+
+        case default
+          call psb_errpush(psb_err_internal_error_,name,&
+               & a_err='wrong  init to smoother_apply')
+          goto 9999
+        end select
+
+        do i=1, sweeps-1
+          !
+          ! Compute Y(j+1) =  Y(j)+ D^(-1)*(X-A*Y(j)),
+          !  where is the diagonal and  A the matrix.
+          !
+          call psb_geaxpby(zone,x,zzero,tx,desc_data,info)
+          call psb_spmm(-zone,sv%a,ty,zone,tx,desc_data,info,&
+               & work=aux,trans=trans_, doswap=.false.)
+          if (info /= psb_success_) exit
+          call ty%mlt(zone,sv%dv,tx,zone,info,conjgx=trans_)
+          if (info /= psb_success_) exit
+        end do
+
+
+        if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
+
+        if (info /= psb_success_) then
+          info=psb_err_internal_error_
+          call psb_errpush(info,name,&
+               & a_err='subsolve with Jacobi sweeps > 1')
+          goto 9999
+        end if
+
+
+      end associate
+
+
+    else
+      
+      info = psb_err_iarg_neg_
+      call psb_errpush(info,name,&
+           & i_err=(/itwo,sweeps,izero,izero,izero/))
+      goto 9999
+      
+    end if
+
+  if (.not.(4*n_col <= size(work))) then
+    deallocate(aux)
+  endif
+
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+
+end subroutine amg_z_jac_solver_apply_vect

amgprec/impl/solver/amg_z_jac_solver_bld.f90

@@ -0,0 +1,125 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  complex(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
+  complex(psb_dpk_), allocatable :: tdb(:)
+  type(psb_z_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='z_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  sv%d = a%get_diag(info)
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == zzero) then 
+      sv%d(i) = zone
+    else
+      sv%d(i) = zone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_jac_solver_bld
+
+

amgprec/impl/solver/amg_z_jac_solver_clear_data.f90

@@ -0,0 +1,65 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_clear_data(sv,info)
+  
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_clear_data
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_jac_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+
+  call sv%a%free()
+  call sv%dv%free(info)
+  if ((info==0).and.allocated(sv%d)) deallocate(sv%d,stat=info)
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_jac_solver_clear_data

amgprec/impl/solver/amg_z_jac_solver_clone.f90

@@ -0,0 +1,88 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_clone(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_clone
+
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  if (allocated(svout)) then
+    call svout%free(info)
+    if (info == psb_success_) deallocate(svout, stat=info)
+  end if
+  if (info == psb_success_) &
+       & allocate(svout, mold=sv, stat=info)
+  if (info /= 0) then 
+    info = psb_err_alloc_dealloc_
+    goto 9999 
+  end if
+
+  select type(svo => svout)
+  class is (amg_z_jac_solver_type)
+    svo%sweeps = sv%sweeps
+    svo%eps    = sv%eps
+    if (info == psb_success_) &
+         & call sv%a%clone(svo%a,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    svo%d = sv%d
+    
+  class default
+    info = psb_err_internal_error_
+  end select
+
+  if (info /= 0) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_jac_solver_clone

amgprec/impl/solver/amg_z_jac_solver_clone_settings.f90

@@ -0,0 +1,69 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_clone_settings(sv,svout,info)
+  
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name =>  amg_z_jac_solver_clone_settings
+  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
+  integer(psb_ipk_)  :: err_act
+  character(len=20) :: name='z_jac_solver_clone_settings'
+
+  call psb_erractionsave(err_act)
+
+  select type(svout)
+  class is(amg_z_jac_solver_type)
+    svout%sweeps = sv%sweeps
+    svout%eps    = sv%eps
+    
+  class default    
+    info = psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999 
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_jac_solver_clone_settings

amgprec/impl/solver/amg_z_jac_solver_cnv.f90

@@ -0,0 +1,72 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_cnv(sv,info,amold,vmold,imold)
+
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_cnv
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: err_act, debug_unit, debug_level
+  character(len=20) :: name='z_jac_solver_cnv', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  if ((info==0).and.present(vmold)) call sv%dv%cnv(mold=vmold)
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_jac_solver_cnv

amgprec/impl/solver/amg_z_jac_solver_dmp.f90

@@ -0,0 +1,107 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_jac_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
+
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_jac_solver_dmp
+  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
+  integer(psb_ipk_)   :: i, j, il1, iln, lname, lev
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: iam, np
+  character(len=80)   :: prefix_
+  character(len=120)  :: fname ! len should be at least 20 more than
+  logical :: solver_, global_num_
+  integer(psb_lpk_), allocatable :: iv(:)
+  !  len of prefix_ 
+
+  info = 0
+
+  ctxt = desc%get_context()
+  call psb_info(ctxt,iam,np)
+
+  if (present(solver)) then 
+    solver_ = solver
+  else
+    solver_ = .false. 
+  end if
+  if (present(global_num)) then 
+    global_num_ = global_num
+  else
+    global_num_ = .false. 
+  end if
+
+
+  if (solver_) then 
+    if (present(prefix)) then 
+      prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
+    else
+      prefix_ = "dump_slv_z"
+    end if
+    lname = len_trim(prefix_)
+    fname = trim(prefix_)
+    write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
+    lname = lname + 5
+    
+    if (global_num_) then
+      iv = desc%get_global_indices(owned=.false.)      
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head,iv=iv)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+      
+    else
+
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
+      if (sv%a%is_asb()) &
+           & call sv%a%print(fname,head=head)
+      write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_diag.mtx'
+      if (allocated(sv%dv)) &
+           & call psb_geprt(fname,sv%dv%v%v,head=head)
+    end if
+  end if
+
+end subroutine amg_z_jac_solver_dmp

amgprec/impl/solver/amg_z_l1_jac_solver_bld.f90

@@ -0,0 +1,128 @@
+!  
+!   
+!                             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.
+!   
+!  
+subroutine amg_z_l1_jac_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+  
+  use psb_base_mod
+  use amg_z_jac_solver, amg_protect_name => amg_z_l1_jac_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  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
+  ! Local variables
+  integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
+  complex(psb_dpk_), allocatable :: tdb(:), tx(:),ty(:)
+  type(psb_z_csr_sparse_mat) :: tcsr
+  type(psb_ctxt_type) :: ctxt
+  integer(psb_ipk_)   :: np, me, i, err_act, debug_unit, debug_level
+  character(len=20)   :: name='z_l1_jac_solver_bld', ch_err
+
+  info=psb_success_
+  call psb_erractionsave(err_act)
+  debug_unit  = psb_get_debug_unit()
+  debug_level = psb_get_debug_level()
+  ctxt       = desc_a%get_context()
+  call psb_info(ctxt, me, np)
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' start'
+
+
+  n_row  = desc_a%get_local_rows()
+  nrow_a = a%get_nrows()
+  if (present(b)) then
+    info=psb_err_internal_error_
+    call psb_errpush(info,name)
+    goto 9999      
+  end if
+    
+  call a%cp_to(tcsr)
+  call sv%a%mv_from(tcsr)
+  if (present(amold)) call sv%a%cscnv(info,mold=amold)
+  
+  tx   = a%get_diag(info)
+  sv%d = a%arwsum(info)
+  sv%d(:) = sv%d(:) - abs(tx(:)) + tx(:) 
+  if (info == psb_success_) call psb_realloc(n_row,sv%d,info)
+  if (present(b)) then 
+    tdb=b%arwsum(info)
+    ty =b%get_diag(info)
+    if (size(tdb)+nrow_a > n_row) call psb_realloc(nrow_a+size(tdb),sv%d,info)
+    if (info == psb_success_) sv%d(nrow_a+1:nrow_a+size(tdb)) = tdb(:) - abs(ty(:)) + ty(:)
+  end if
+  if (info /= psb_success_) then 
+    call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
+    goto 9999      
+  end if
+
+  do i=1,n_row
+    if (sv%d(i) == zzero) then 
+      sv%d(i) = zone
+    else
+      sv%d(i) = zone/sv%d(i)
+    end if
+  end do
+  allocate(sv%dv,stat=info) 
+  if (info == psb_success_) then 
+    call sv%dv%bld(sv%d)
+    if (present(vmold)) call sv%dv%cnv(vmold)
+    call sv%dv%sync()
+  else
+    call psb_errpush(psb_err_from_subroutine_,name,& 
+         & a_err='Allocate sv%dv')
+    goto 9999      
+  end if
+
+  if (debug_level >= psb_debug_outer_) &
+       & write(debug_unit,*) me,' ',trim(name),' end'
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+
+  return
+end subroutine amg_z_l1_jac_solver_bld
+
+

samples/advanced/fileread/amg_cf_sample.f90

@@ -380,6 +380,8 @@ program amg_cf_sample
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -389,6 +391,8 @@ program amg_cf_sample
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
     
@@ -428,6 +432,8 @@ program amg_cf_sample
       call prec%set('sub_restr',       p_choice%restr,      info)
       call prec%set('sub_prol',        p_choice%prol,       info)
       call prec%set('sub_solve',       p_choice%solve,      info)
+      if (psb_toupper(p_choice%solve)=='MUMPS') &
+           & call prec%set('mumps_loc_glob','local_solver',info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
     end select
@@ -443,6 +449,8 @@ program amg_cf_sample
         call prec%set('sub_restr',       p_choice%restr2,    info,pos='post')
         call prec%set('sub_prol',        p_choice%prol2,     info,pos='post')
         call prec%set('sub_solve',       p_choice%solve2,    info,pos='post')
+        if (psb_toupper(p_choice%solve2)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
       end select
@@ -586,7 +594,7 @@ program amg_cf_sample
   call psb_gefree(b_col,desc_a,info)
   call psb_gefree(x_col,desc_a,info)
   call psb_gefree(r_col,desc_a,info)
-  call psb_gefree(ref_col,desc_a,info)
+  if (have_ref) call psb_gefree(ref_col,desc_a,info)
   call psb_spfree(a, desc_a,info)
   call prec%free(info)
   call psb_cdfree(desc_a,info)

samples/advanced/fileread/amg_df_sample.f90

@@ -380,6 +380,8 @@ program amg_df_sample
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -389,6 +391,8 @@ program amg_df_sample
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
     
@@ -428,6 +432,8 @@ program amg_df_sample
       call prec%set('sub_restr',       p_choice%restr,      info)
       call prec%set('sub_prol',        p_choice%prol,       info)
       call prec%set('sub_solve',       p_choice%solve,      info)
+      if (psb_toupper(p_choice%solve)=='MUMPS') &
+           & call prec%set('mumps_loc_glob','local_solver',info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
     end select
@@ -443,6 +449,8 @@ program amg_df_sample
         call prec%set('sub_restr',       p_choice%restr2,    info,pos='post')
         call prec%set('sub_prol',        p_choice%prol2,     info,pos='post')
         call prec%set('sub_solve',       p_choice%solve2,    info,pos='post')
+        if (psb_toupper(p_choice%solve2)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
       end select
@@ -586,7 +594,7 @@ program amg_df_sample
   call psb_gefree(b_col,desc_a,info)
   call psb_gefree(x_col,desc_a,info)
   call psb_gefree(r_col,desc_a,info)
-  call psb_gefree(ref_col,desc_a,info)
+  if (have_ref) call psb_gefree(ref_col,desc_a,info)
   call psb_spfree(a, desc_a,info)
   call prec%free(info)
   call psb_cdfree(desc_a,info)

samples/advanced/fileread/amg_sf_sample.f90

@@ -380,6 +380,8 @@ program amg_sf_sample
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -389,6 +391,8 @@ program amg_sf_sample
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
     
@@ -428,6 +432,8 @@ program amg_sf_sample
       call prec%set('sub_restr',       p_choice%restr,      info)
       call prec%set('sub_prol',        p_choice%prol,       info)
       call prec%set('sub_solve',       p_choice%solve,      info)
+      if (psb_toupper(p_choice%solve)=='MUMPS') &
+           & call prec%set('mumps_loc_glob','local_solver',info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
     end select
@@ -443,6 +449,8 @@ program amg_sf_sample
         call prec%set('sub_restr',       p_choice%restr2,    info,pos='post')
         call prec%set('sub_prol',        p_choice%prol2,     info,pos='post')
         call prec%set('sub_solve',       p_choice%solve2,    info,pos='post')
+        if (psb_toupper(p_choice%solve2)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
       end select
@@ -586,7 +594,7 @@ program amg_sf_sample
   call psb_gefree(b_col,desc_a,info)
   call psb_gefree(x_col,desc_a,info)
   call psb_gefree(r_col,desc_a,info)
-  call psb_gefree(ref_col,desc_a,info)
+  if (have_ref) call psb_gefree(ref_col,desc_a,info)
   call psb_spfree(a, desc_a,info)
   call prec%free(info)
   call psb_cdfree(desc_a,info)

samples/advanced/fileread/amg_zf_sample.f90

@@ -380,6 +380,8 @@ program amg_zf_sample
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -389,6 +391,8 @@ program amg_zf_sample
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
     
@@ -428,6 +432,8 @@ program amg_zf_sample
       call prec%set('sub_restr',       p_choice%restr,      info)
       call prec%set('sub_prol',        p_choice%prol,       info)
       call prec%set('sub_solve',       p_choice%solve,      info)
+      if (psb_toupper(p_choice%solve)=='MUMPS') &
+           & call prec%set('mumps_loc_glob','local_solver',info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
     end select
@@ -443,6 +449,8 @@ program amg_zf_sample
         call prec%set('sub_restr',       p_choice%restr2,    info,pos='post')
         call prec%set('sub_prol',        p_choice%prol2,     info,pos='post')
         call prec%set('sub_solve',       p_choice%solve2,    info,pos='post')
+        if (psb_toupper(p_choice%solve2)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
       end select
@@ -586,7 +594,7 @@ program amg_zf_sample
   call psb_gefree(b_col,desc_a,info)
   call psb_gefree(x_col,desc_a,info)
   call psb_gefree(r_col,desc_a,info)
-  call psb_gefree(ref_col,desc_a,info)
+  if (have_ref) call psb_gefree(ref_col,desc_a,info)
   call psb_spfree(a, desc_a,info)
   call prec%free(info)
   call psb_cdfree(desc_a,info)

samples/advanced/fileread/runs/amg_dfs.inp

@@ -5,7 +5,7 @@ NONE                        ! Initial guess
 amg_sol.mtx                 ! Reference solution
 MM                          ! File format: MatrixMarket or Harwell-Boeing
 CSR                         ! Storage format: CSR COO JAD 
-GRAPH                       ! PART (partition method): BLOCK GRAPH
+GRAPH			    ! PART (partition method): BLOCK GRAPH
 CG                          ! Iterative method: BiCGSTAB BiCGSTABL BiCG CG CGS FCG GCR RGMRES
 2                           ! ISTOPC
 00500                       ! ITMAX

samples/advanced/pdegen/Makefile

@@ -8,23 +8,27 @@ FINCLUDES=$(FMFLAG). $(FMFLAG)$(AMGMODDIR) $(FMFLAG)$(AMGINCDIR) $(PSBLAS_INCLUD
 
 LINKOPT=
 EXEDIR=./runs
+DGEN2D=amg_d_pde2d_base_mod.o amg_d_pde2d_exp_mod.o amg_d_pde2d_gauss_mod.o amg_d_pde2d_box_mod.o
+DGEN3D=amg_d_pde3d_base_mod.o amg_d_pde3d_exp_mod.o amg_d_pde3d_gauss_mod.o amg_d_pde3d_box_mod.o 	
+SGEN2D=amg_s_pde2d_base_mod.o amg_s_pde2d_exp_mod.o amg_s_pde2d_gauss_mod.o amg_s_pde2d_box_mod.o
+SGEN3D=amg_s_pde3d_base_mod.o amg_s_pde3d_exp_mod.o amg_s_pde3d_gauss_mod.o amg_s_pde3d_box_mod.o 	
 
 all: amg_s_pde3d amg_d_pde3d amg_s_pde2d amg_d_pde2d
 
-amg_d_pde3d: amg_d_pde3d.o amg_d_genpde_mod.o amg_d_pde3d_base_mod.o amg_d_pde3d_exp_mod.o amg_d_pde3d_gauss_mod.o data_input.o
-	$(FLINK) $(LINKOPT) amg_d_pde3d.o  amg_d_genpde_mod.o amg_d_pde3d_base_mod.o amg_d_pde3d_exp_mod.o amg_d_pde3d_gauss_mod.o data_input.o -o amg_d_pde3d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
+amg_d_pde3d: amg_d_pde3d.o amg_d_genpde_mod.o $(DGEN3D) data_input.o
+	$(FLINK) $(LINKOPT) amg_d_pde3d.o  amg_d_genpde_mod.o $(DGEN3D) data_input.o -o amg_d_pde3d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
 	/bin/mv amg_d_pde3d $(EXEDIR)
 
-amg_s_pde3d: amg_s_pde3d.o amg_s_genpde_mod.o amg_s_pde3d_base_mod.o  amg_s_pde3d_exp_mod.o amg_s_pde3d_gauss_mod.o data_input.o
-	$(FLINK) $(LINKOPT) amg_s_pde3d.o  amg_s_genpde_mod.o amg_s_pde3d_base_mod.o amg_s_pde3d_exp_mod.o amg_s_pde3d_gauss_mod.o data_input.o -o amg_s_pde3d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
+amg_s_pde3d: amg_s_pde3d.o amg_s_genpde_mod.o $(SGEN3D) data_input.o
+	$(FLINK) $(LINKOPT) amg_s_pde3d.o  amg_s_genpde_mod.o  $(SGEN3D) data_input.o -o amg_s_pde3d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
 	/bin/mv amg_s_pde3d $(EXEDIR)
 
-amg_d_pde2d: amg_d_pde2d.o amg_d_genpde_mod.o amg_d_pde2d_base_mod.o amg_d_pde2d_exp_mod.o amg_d_pde2d_box_mod.o data_input.o
-	$(FLINK) $(LINKOPT) amg_d_pde2d.o amg_d_genpde_mod.o amg_d_pde2d_base_mod.o amg_d_pde2d_exp_mod.o amg_d_pde2d_box_mod.o data_input.o -o amg_d_pde2d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
+amg_d_pde2d: amg_d_pde2d.o amg_d_genpde_mod.o  $(DGEN2D) data_input.o
+	$(FLINK) $(LINKOPT) amg_d_pde2d.o amg_d_genpde_mod.o $(DGEN2D) data_input.o -o amg_d_pde2d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
 	/bin/mv amg_d_pde2d $(EXEDIR)
 
-amg_s_pde2d: amg_s_pde2d.o amg_s_genpde_mod.o amg_s_pde2d_base_mod.o amg_s_pde2d_exp_mod.o amg_s_pde2d_box_mod.o data_input.o
-	$(FLINK) $(LINKOPT) amg_s_pde2d.o amg_s_genpde_mod.o amg_s_pde2d_base_mod.o amg_s_pde2d_exp_mod.o amg_s_pde2d_box_mod.o data_input.o -o amg_s_pde2d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
+amg_s_pde2d: amg_s_pde2d.o amg_s_genpde_mod.o $(SGEN2D) data_input.o
+	$(FLINK) $(LINKOPT) amg_s_pde2d.o amg_s_genpde_mod.o $(SGEN2D) data_input.o -o amg_s_pde2d $(AMG_LIBS) $(PSBLAS_LIBS) $(LDLIBS)
 	/bin/mv amg_s_pde2d $(EXEDIR)
 
 amg_d_pde3d_rebld: amg_d_pde3d_rebld.o  data_input.o
@@ -33,10 +37,10 @@ amg_d_pde3d_rebld: amg_d_pde3d_rebld.o  data_input.o
 
 amg_d_pde3d.o amg_s_pde3d.o amg_d_pde2d.o amg_s_pde2d.o: data_input.o
 
-amg_d_pde3d.o: amg_d_genpde_mod.o amg_d_pde3d_base_mod.o amg_d_pde3d_exp_mod.o amg_d_pde3d_gauss_mod.o
-amg_s_pde3d.o: amg_s_genpde_mod.o amg_s_pde3d_base_mod.o amg_s_pde3d_exp_mod.o amg_s_pde3d_gauss_mod.o
-amg_d_pde2d.o: amg_d_genpde_mod.o amg_d_pde2d_base_mod.o amg_d_pde2d_exp_mod.o amg_d_pde2d_box_mod.o
-amg_s_pde2d.o: amg_s_genpde_mod.o amg_s_pde2d_base_mod.o amg_s_pde2d_exp_mod.o amg_s_pde2d_box_mod.o
+amg_d_pde3d.o: amg_d_genpde_mod.o $(DGEN3D)
+amg_s_pde3d.o: amg_s_genpde_mod.o $(SGEN3D) 
+amg_d_pde2d.o: amg_d_genpde_mod.o $(DGEN2D)
+amg_s_pde2d.o: amg_s_genpde_mod.o $(SGEN2D)
 
 check: all
 	cd runs && ./amg_d_pde2d <amg_pde2d.inp && ./amg_s_pde2d<amg_pde2d.inp

samples/advanced/pdegen/amg_d_pde2d.F90

@@ -72,6 +72,7 @@ program amg_d_pde2d
   use amg_d_pde2d_base_mod
   use amg_d_pde2d_exp_mod
   use amg_d_pde2d_box_mod
+  use amg_d_pde2d_gauss_mod
   use amg_d_genpde_mod
 #if defined(OPENMP)
   use omp_lib
@@ -124,16 +125,16 @@ program amg_d_pde2d
     integer(psb_ipk_)  :: outer_sweeps ! number of outer sweeps: sweeps for 1-level,
     ! AMG cycles for ML
     ! general AMG data
-    character(len=16)  :: mlcycle      ! AMG cycle type
+    character(len=32)  :: mlcycle      ! AMG cycle type
     integer(psb_ipk_)  :: maxlevs     ! maximum number of levels in AMG preconditioner
 
     ! AMG aggregation
-    character(len=16)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
-    character(len=16)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
-    character(len=16)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
+    character(len=32)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
+    character(len=32)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
+    character(len=32)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
     integer(psb_ipk_)  :: aggr_size   ! Requested size of the aggregates for MATCHBOXP
-    character(len=16)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
-    character(len=16)  :: aggr_filter ! filtering: FILTER, NO_FILTER
+    character(len=32)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
+    character(len=32)  :: aggr_filter ! filtering: FILTER, NO_FILTER
     real(psb_dpk_)     :: mncrratio  ! minimum aggregation ratio
     real(psb_dpk_), allocatable :: athresv(:) ! smoothed aggregation threshold vector
     integer(psb_ipk_)  :: thrvsz      ! size of threshold vector
@@ -141,37 +142,39 @@ program amg_d_pde2d
     integer(psb_ipk_)  :: csizepp     ! minimum size of coarsest matrix per process
 
     ! AMG smoother or pre-smoother; also 1-lev preconditioner
-    character(len=16)  :: smther      ! (pre-)smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps     ! (pre-)smoother / 1-lev prec. sweeps
-    integer(psb_ipk_)  :: novr        ! number of overlap layers
-    character(len=16)  :: restr       ! restriction over application of AS
-    character(len=16)  :: prol        ! prolongation over application of AS
-    character(len=16)  :: solve       ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant     ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill        ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill     ! Inverse fill-in for INVK
-    real(psb_dpk_)     :: thr         ! threshold for ILUT factorization
+    character(len=32)  :: smther       ! (pre-)smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps      ! (pre-)smoother / 1-lev prec. sweeps
+    integer(psb_ipk_)  :: novr         ! number of overlap layers
+    character(len=32)  :: restr        ! restriction over application of AS
+    character(len=32)  :: prol         ! prolongation over application of AS
+    character(len=32)  :: solve        ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps      ! inner solver sweeps
+    character(len=32)  :: variant      ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill         ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill      ! Inverse fill-in for INVK
+    real(psb_dpk_)      :: thr          ! threshold for ILUT factorization
 
     ! AMG post-smoother; ignored by 1-lev preconditioner
-    character(len=16)  :: smther2     ! post-smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps2    ! post-smoother sweeps
-    integer(psb_ipk_)  :: novr2       ! number of overlap layers
-    character(len=16)  :: restr2      ! restriction  over application of AS
-    character(len=16)  :: prol2       ! prolongation over application of AS
-    character(len=16)  :: solve2      ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant2    ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill2       ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill2    ! Inverse fill-in for INVK
-    real(psb_dpk_)      :: thr2        ! threshold for ILUT factorization
+    character(len=32)  :: smther2      ! post-smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps2     ! post-smoother sweeps
+    integer(psb_ipk_)  :: novr2        ! number of overlap layers
+    character(len=32)  :: restr2       ! restriction  over application of AS
+    character(len=32)  :: prol2        ! prolongation over application of AS
+    character(len=32)  :: solve2       ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps2     ! inner solver sweeps
+    character(len=32)  :: variant2     ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill2        ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill2     ! Inverse fill-in for INVK
+    real(psb_dpk_)      :: thr2         ! threshold for ILUT factorization
 
     ! coarsest-level solver
-    character(len=16)  :: cmat        ! coarsest matrix layout: REPL, DIST
-    character(len=16)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
+    character(len=32)  :: cmat        ! coarsest matrix layout: REPL, DIST
+    character(len=32)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
                                       ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
                                       ! (repl. mat.)
-    character(len=16)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
+    character(len=32)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
                                       ! MILU, UMF, MUMPS, SLU
     integer(psb_ipk_)  :: cfill       ! fill-in for incomplete LU factorization
     real(psb_dpk_)     :: cthres      ! threshold for ILUT factorization
@@ -239,13 +242,16 @@ program amg_d_pde2d
   select case(psb_toupper(trim(pdecoeff)))
   case("CONST")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
-        & a1,a2,b1,b2,c,g,info)
+        & a1_base,a2_base,b1_base,b2_base,c_base,g_base,info)
   case("EXP")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_exp,a2_exp,b1_exp,b2_exp,c_exp,g_exp,info)
   case("BOX")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_box,a2_box,b1_box,b2_box,c_box,g_box,info)
+  case("GAUSS")
+    call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
+        & a1_gauss,a2_gauss,b1_gauss,b2_gauss,c_gauss,g_gauss,info)
   case default
     info=psb_err_from_subroutine_
     ch_err='amg_gen_pdecoeff'
@@ -282,6 +288,9 @@ program amg_d_pde2d
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -291,6 +300,9 @@ program amg_d_pde2d
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -342,8 +354,10 @@ program amg_d_pde2d
         call prec%set('ainv_alg', p_choice%variant,   info)
       case default
         call prec%set('sub_solve',       p_choice%solve,   info)
+        if (psb_toupper(p_choice%solve)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
       end select
-
+      call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('inv_fillin',      p_choice%invfill,    info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
@@ -369,8 +383,10 @@ program amg_d_pde2d
           call prec%set('ainv_alg', p_choice%variant2,   info)
         case default
           call prec%set('sub_solve',       p_choice%solve2,   info, pos='post')
+          if (psb_toupper(p_choice%solve2)=='MUMPS') &
+               & call prec%set('mumps_loc_glob','local_solver',info)
         end select
-
+        call prec%set('solver_sweeps',   p_choice%ssweeps2,   info,pos='post')
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('inv_fillin',      p_choice%invfill2,  info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
@@ -569,6 +585,7 @@ contains
       call read_data(prec%restr,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant,inp_unit)    ! AINV variant
       call read_data(prec%fill,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill,inp_unit)    !Inverse fill-in for INVK
@@ -580,6 +597,7 @@ contains
       call read_data(prec%restr2,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol2,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve2,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps2,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant2,inp_unit)    ! AINV variant
       call read_data(prec%fill2,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill2,inp_unit)    !Inverse fill-in for INVK
@@ -649,6 +667,7 @@ contains
     call psb_bcast(ctxt,prec%restr)
     call psb_bcast(ctxt,prec%prol)
     call psb_bcast(ctxt,prec%solve)
+    call psb_bcast(ctxt,prec%ssweeps)
     call psb_bcast(ctxt,prec%variant)
     call psb_bcast(ctxt,prec%fill)
     call psb_bcast(ctxt,prec%invfill)
@@ -660,6 +679,7 @@ contains
     call psb_bcast(ctxt,prec%restr2)
     call psb_bcast(ctxt,prec%prol2)
     call psb_bcast(ctxt,prec%solve2)
+    call psb_bcast(ctxt,prec%ssweeps2)
     call psb_bcast(ctxt,prec%variant2)
     call psb_bcast(ctxt,prec%fill2)
     call psb_bcast(ctxt,prec%invfill2)

samples/advanced/pdegen/amg_d_pde2d_base_mod.f90

@@ -38,52 +38,52 @@ module amg_d_pde2d_base_mod
   use psb_base_mod, only : psb_dpk_, dzero, done
   real(psb_dpk_), save, private :: epsilon=done/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_base(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_base
   !
   ! functions parametrizing the differential equation
   !
-  function b1(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) :: b1
+  function b1_base(x,y)
+    implicit none 
+    real(psb_dpk_) :: b1_base
     real(psb_dpk_), intent(in) :: x,y
-    b1 = dzero/1.414_psb_dpk_
-  end function b1
-  function b2(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  b2
+    b1_base = dzero/1.414_psb_dpk_
+  end function b1_base
+  function b2_base(x,y)
+    implicit none 
+    real(psb_dpk_) ::  b2_base
     real(psb_dpk_), intent(in) :: x,y
-    b2 = dzero/1.414_psb_dpk_
-  end function b2
-  function c(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  c
+    b2_base = dzero/1.414_psb_dpk_
+  end function b2_base
+  function c_base(x,y)
+    implicit none 
+    real(psb_dpk_) ::  c_base
     real(psb_dpk_), intent(in) :: x,y
-    c = dzero
-  end function c
-  function a1(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  a1
+    c_base = dzero
+  end function c_base
+  function a1_base(x,y)
+    implicit none 
+    real(psb_dpk_) ::  a1_base
     real(psb_dpk_), intent(in) :: x,y
-    a1=done*epsilon
-  end function a1
-  function a2(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  a2
+    a1_base=done*epsilon
+  end function a1_base
+  function a2_base(x,y)
+    implicit none 
+    real(psb_dpk_) ::  a2_base
     real(psb_dpk_), intent(in) :: x,y
-    a2=done*epsilon
-  end function a2
-  function g(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  g
+    a2_base=done*epsilon
+  end function a2_base
+  function g_base(x,y)
+    implicit none 
+    real(psb_dpk_) ::  g_base
     real(psb_dpk_), intent(in) :: x,y
-    g = dzero
+    g_base = dzero
     if (x == done) then
-      g = done
+      g_base = done
     else if (x == dzero) then
-      g = done
+      g_base = done
     end if
-  end function g
+  end function g_base
 end module amg_d_pde2d_base_mod

samples/advanced/pdegen/amg_d_pde2d_box_mod.f90

@@ -38,45 +38,45 @@ module amg_d_pde2d_box_mod
   use psb_base_mod, only : psb_dpk_, dzero, done
   real(psb_dpk_), save, private :: epsilon=done/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_box(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_box
   !
   ! functions parametrizing the differential equation
   !
   function b1_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) :: b1_box
     real(psb_dpk_), intent(in) :: x,y
     b1_box = done/1.414_psb_dpk_
   end function b1_box
   function b2_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) ::  b2_box
     real(psb_dpk_), intent(in) :: x,y
     b2_box = done/1.414_psb_dpk_
   end function b2_box
   function c_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) ::  c_box
     real(psb_dpk_), intent(in) :: x,y
     c_box = dzero
   end function c_box
   function a1_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) ::  a1_box
     real(psb_dpk_), intent(in) :: x,y
     a1_box=done*epsilon
   end function a1_box
   function a2_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) ::  a2_box
     real(psb_dpk_), intent(in) :: x,y
     a2_box=done*epsilon
   end function a2_box
   function g_box(x,y)
-    use psb_base_mod, only : psb_dpk_, dzero, done
+    implicit none 
     real(psb_dpk_) ::  g_box
     real(psb_dpk_), intent(in) :: x,y
     g_box = dzero

samples/advanced/pdegen/amg_d_pde2d_exp_mod.f90

@@ -38,45 +38,45 @@ module amg_d_pde2d_exp_mod
   use psb_base_mod, only : psb_dpk_, done, dzero
   real(psb_dpk_), save, private :: epsilon=done/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_exp(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_exp
   !
   ! functions parametrizing the differential equation
   !
   function b1_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) :: b1_exp
     real(psb_dpk_), intent(in) :: x,y
     b1_exp = dzero
   end function b1_exp
   function b2_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  b2_exp
     real(psb_dpk_), intent(in) :: x,y
     b2_exp = dzero
   end function b2_exp
   function c_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  c_exp
     real(psb_dpk_), intent(in) :: x,y
     c_exp = dzero
   end function c_exp
   function a1_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  a1_exp
     real(psb_dpk_), intent(in) :: x,y
-    a1=done*epsilon*exp(-(x+y))
+    a1_exp=done*epsilon*exp(-(x+y))
   end function a1_exp
   function a2_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  a2_exp
     real(psb_dpk_), intent(in) :: x,y
-    a2=done*epsilon*exp(-(x+y))
+    a2_exp=done*epsilon*exp(-(x+y))
   end function a2_exp
   function g_exp(x,y)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  g_exp
     real(psb_dpk_), intent(in) :: x,y
     g_exp = dzero

samples/advanced/pdegen/amg_d_pde2d_gauss_mod.f90

@@ -0,0 +1,89 @@
+!
+!
+!                             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.
+!
+module amg_d_pde2d_gauss_mod
+  use psb_base_mod, only : psb_dpk_, done, dzero
+  real(psb_dpk_), save, private :: epsilon=done/80
+contains
+  subroutine pde_set_parm2d_gauss(dat)
+    real(psb_dpk_), intent(in) :: dat
+    epsilon = dat
+  end subroutine pde_set_parm2d_gauss
+  !
+  ! functions parametrizing the differential equation
+  !
+  function b1_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) :: b1_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    b1_gauss=done/sqrt(3.0_psb_dpk_)-2*x*exp(-(x**2+y**2))
+  end function b1_gauss
+  function b2_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) ::  b2_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    b2_gauss=done/sqrt(3.0_psb_dpk_)-2*y*exp(-(x**2+y**2))
+  end function b2_gauss
+  function c_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) ::  c_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    c_gauss=dzero
+  end function c_gauss
+  function a1_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) ::  a1_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    a1_gauss=epsilon*exp(-(x**2+y**2))
+  end function a1_gauss
+  function a2_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) ::  a2_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    a2_gauss=epsilon*exp(-(x**2+y**2))
+  end function a2_gauss
+  function g_gauss(x,y)
+    implicit none 
+    real(psb_dpk_) ::  g_gauss
+    real(psb_dpk_), intent(in) :: x,y
+    g_gauss = dzero
+    if (x == done) then
+      g_gauss = done
+    else if (x == dzero) then
+      g_gauss = done
+    end if
+  end function g_gauss
+end module amg_d_pde2d_gauss_mod

samples/advanced/pdegen/amg_d_pde3d.F90

@@ -72,6 +72,7 @@ program amg_d_pde3d
   use data_input
   use amg_d_pde3d_base_mod
   use amg_d_pde3d_exp_mod
+  use amg_d_pde3d_box_mod
   use amg_d_pde3d_gauss_mod
   use amg_d_genpde_mod
 #if defined(OPENMP)
@@ -125,63 +126,65 @@ program amg_d_pde3d
     integer(psb_ipk_)  :: outer_sweeps ! number of outer sweeps: sweeps for 1-level,
     ! AMG cycles for ML
     ! general AMG data
-    character(len=16)  :: mlcycle      ! AMG cycle type
-    integer(psb_ipk_)  :: maxlevs     ! maximum number of levels in AMG preconditioner
+    character(len=32)  :: mlcycle      ! AMG cycle type
+    integer(psb_ipk_)  :: maxlevs      ! maximum number of levels in AMG preconditioner
 
     ! AMG aggregation
-    character(len=16)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
-    character(len=16)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
-    character(len=16)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
-    integer(psb_ipk_)  :: aggr_size   ! Requested size of the aggregates for MATCHBOXP
-    character(len=16)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
-    character(len=16)  :: aggr_filter ! filtering: FILTER, NO_FILTER
-    real(psb_dpk_)     :: mncrratio  ! minimum aggregation ratio
+    character(len=32)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
+    character(len=32)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
+    character(len=32)  :: aggr_type    ! Type of aggregation SOC1, SOC2, MATCHBOXP
+    integer(psb_ipk_)  :: aggr_size    ! Requested size of the aggregates for MATCHBOXP
+    character(len=32)  :: aggr_ord     ! ordering for aggregation: NATURAL, DEGREE
+    character(len=32)  :: aggr_filter  ! filtering: FILTER, NO_FILTER
+    real(psb_dpk_)      :: mncrratio    ! minimum aggregation ratio
     real(psb_dpk_), allocatable :: athresv(:) ! smoothed aggregation threshold vector
-    integer(psb_ipk_)  :: thrvsz      ! size of threshold vector
-    real(psb_dpk_)     :: athres      ! smoothed aggregation threshold
-    integer(psb_ipk_)  :: csizepp     ! minimum size of coarsest matrix per process
+    integer(psb_ipk_)  :: thrvsz       ! size of threshold vector
+    real(psb_dpk_)      :: athres       ! smoothed aggregation threshold
+    integer(psb_ipk_)  :: csizepp      ! minimum size of coarsest matrix per process
 
     ! AMG smoother or pre-smoother; also 1-lev preconditioner
-    character(len=16)  :: smther      ! (pre-)smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps     ! (pre-)smoother / 1-lev prec. sweeps
-    integer(psb_ipk_)  :: novr        ! number of overlap layers
-    character(len=16)  :: restr       ! restriction over application of AS
-    character(len=16)  :: prol        ! prolongation over application of AS
-    character(len=16)  :: solve       ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant     ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill        ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill     ! Inverse fill-in for INVK
-    real(psb_dpk_)     :: thr         ! threshold for ILUT factorization
+    character(len=32)  :: smther       ! (pre-)smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps      ! (pre-)smoother / 1-lev prec. sweeps
+    integer(psb_ipk_)  :: novr         ! number of overlap layers
+    character(len=32)  :: restr        ! restriction over application of AS
+    character(len=32)  :: prol         ! prolongation over application of AS
+    character(len=32)  :: solve        ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps      ! inner solver sweeps
+    character(len=32)  :: variant      ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill         ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill      ! Inverse fill-in for INVK
+    real(psb_dpk_)      :: thr          ! threshold for ILUT factorization
 
     ! AMG post-smoother; ignored by 1-lev preconditioner
-    character(len=16)  :: smther2     ! post-smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps2    ! post-smoother sweeps
-    integer(psb_ipk_)  :: novr2       ! number of overlap layers
-    character(len=16)  :: restr2      ! restriction  over application of AS
-    character(len=16)  :: prol2       ! prolongation over application of AS
-    character(len=16)  :: solve2      ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant2    ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill2       ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill2    ! Inverse fill-in for INVK
-    real(psb_dpk_)      :: thr2        ! threshold for ILUT factorization
+    character(len=32)  :: smther2      ! post-smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps2     ! post-smoother sweeps
+    integer(psb_ipk_)  :: novr2        ! number of overlap layers
+    character(len=32)  :: restr2       ! restriction  over application of AS
+    character(len=32)  :: prol2        ! prolongation over application of AS
+    character(len=32)  :: solve2       ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps2     ! inner solver sweeps
+    character(len=32)  :: variant2     ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill2        ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill2     ! Inverse fill-in for INVK
+    real(psb_dpk_)      :: thr2         ! threshold for ILUT factorization
 
     ! coarsest-level solver
-    character(len=16)  :: cmat        ! coarsest matrix layout: REPL, DIST
-    character(len=16)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
-                                      ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
-                                      ! (repl. mat.)
-    character(len=16)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
-                                      ! MILU, UMF, MUMPS, SLU
-    integer(psb_ipk_)  :: cfill       ! fill-in for incomplete LU factorization
-    real(psb_dpk_)     :: cthres      ! threshold for ILUT factorization
-    integer(psb_ipk_)  :: cjswp       ! sweeps for GS or JAC coarsest-lev subsolver
+    character(len=32)  :: cmat         ! coarsest matrix layout: REPL, DIST
+    character(len=32)  :: csolve       ! coarsest-lev solver: BJAC, SLUDIST (distr.
+                                       ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
+                                       ! (repl. mat.)
+    character(len=32)  :: csbsolve     ! coarsest-lev local subsolver: ILU, ILUT,
+                                       ! MILU, UMF, MUMPS, SLU
+    integer(psb_ipk_)  :: cfill        ! fill-in for incomplete LU factorization
+    real(psb_dpk_)     :: cthres        ! threshold for ILUT factorization
+    integer(psb_ipk_)  :: cjswp        ! sweeps for GS or JAC coarsest-lev subsolver
 
     ! Dump data
     logical            :: dump = .false.
-    integer(psb_ipk_)  :: dlmin       ! Minimum level to dump 
-    integer(psb_ipk_)  :: dlmax       ! Maximum level to dump
+    integer(psb_ipk_)  :: dlmin        ! Minimum level to dump 
+    integer(psb_ipk_)  :: dlmax        ! Maximum level to dump
     logical            :: dump_ac         = .false.
     logical            :: dump_rp         = .false.
     logical            :: dump_tprol      = .false.
@@ -241,10 +244,13 @@ program amg_d_pde3d
   select case(psb_toupper(trim(pdecoeff)))
   case("CONST")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
-        & a1,a2,a3,b1,b2,b3,c,g,info)
+        & a1_base,a2_base,a3_base,b1_base,b2_base,b3_base,c_base,g_base,info)
   case("EXP")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_exp,a2_exp,a3_exp,b1_exp,b2_exp,b3_exp,c_exp,g_exp,info)
+  case("BOX")
+    call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
+        & a1_box,a2_box,a3_box,b1_box,b2_box,b3_box,c_box,g_box,info)
   case("GAUSS")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_gauss,a2_gauss,a3_gauss,b1_gauss,b2_gauss,b3_gauss,c_gauss,g_gauss,info)
@@ -286,6 +292,9 @@ program amg_d_pde3d
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -295,6 +304,9 @@ program amg_d_pde3d
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -346,8 +358,10 @@ program amg_d_pde3d
         call prec%set('ainv_alg', p_choice%variant,   info)
       case default
         call prec%set('sub_solve',       p_choice%solve,   info)
+        if (psb_toupper(p_choice%solve)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
       end select
-
+      call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('inv_fillin',      p_choice%invfill,    info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
@@ -373,8 +387,10 @@ program amg_d_pde3d
           call prec%set('ainv_alg', p_choice%variant2,   info)
         case default
           call prec%set('sub_solve',       p_choice%solve2,   info, pos='post')
+          if (psb_toupper(p_choice%solve2)=='MUMPS') &
+               & call prec%set('mumps_loc_glob','local_solver',info)
         end select
-
+        call prec%set('solver_sweeps',   p_choice%ssweeps2,   info,pos='post')
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('inv_fillin',      p_choice%invfill2,  info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
@@ -492,7 +508,7 @@ program amg_d_pde3d
     write(psb_out_unit,'("Storage format for DESC_A          : ",a  )') desc_a%get_fmt()
 
   end if
-  call psb_print_timers(ctxt)
+
   !
   !  cleanup storage and exit
   !
@@ -573,6 +589,7 @@ contains
       call read_data(prec%restr,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant,inp_unit)    ! AINV variant
       call read_data(prec%fill,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill,inp_unit)    !Inverse fill-in for INVK
@@ -584,6 +601,7 @@ contains
       call read_data(prec%restr2,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol2,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve2,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps2,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant2,inp_unit)    ! AINV variant
       call read_data(prec%fill2,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill2,inp_unit)    !Inverse fill-in for INVK
@@ -653,6 +671,7 @@ contains
     call psb_bcast(ctxt,prec%restr)
     call psb_bcast(ctxt,prec%prol)
     call psb_bcast(ctxt,prec%solve)
+    call psb_bcast(ctxt,prec%ssweeps)
     call psb_bcast(ctxt,prec%variant)
     call psb_bcast(ctxt,prec%fill)
     call psb_bcast(ctxt,prec%invfill)
@@ -664,6 +683,7 @@ contains
     call psb_bcast(ctxt,prec%restr2)
     call psb_bcast(ctxt,prec%prol2)
     call psb_bcast(ctxt,prec%solve2)
+    call psb_bcast(ctxt,prec%ssweeps2)
     call psb_bcast(ctxt,prec%variant2)
     call psb_bcast(ctxt,prec%fill2)
     call psb_bcast(ctxt,prec%invfill2)

samples/advanced/pdegen/amg_d_pde3d_base_mod.f90

@@ -35,67 +35,67 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_d_pde3d_base_mod
-  use psb_base_mod, only : psb_dpk_, done
+  use psb_base_mod, only : psb_dpk_, done, dzero
   real(psb_dpk_), save, private :: epsilon=done/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_base(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_base
   !
   ! functions parametrizing the differential equation
   !
-  function b1(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
-    real(psb_dpk_) :: b1
+  function b1_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) :: b1_base
     real(psb_dpk_), intent(in) :: x,y,z
-    b1=done/sqrt(3.0_psb_dpk_)
-  end function b1
-  function b2(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
-    real(psb_dpk_) ::  b2
+    b1_base=dzero/sqrt(3.0_psb_dpk_)
+  end function b1_base
+  function b2_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  b2_base
     real(psb_dpk_), intent(in) :: x,y,z
-    b2=done/sqrt(3.0_psb_dpk_)
-  end function b2
-  function b3(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
-    real(psb_dpk_) ::  b3
+    b2_base=dzero/sqrt(3.0_psb_dpk_)
+  end function b2_base
+  function b3_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  b3_base
     real(psb_dpk_), intent(in) :: x,y,z
-    b3=done/sqrt(3.0_psb_dpk_)
-  end function b3
-  function c(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero, done
-    real(psb_dpk_) ::  c
+    b3_base=dzero/sqrt(3.0_psb_dpk_)
+  end function b3_base
+  function c_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  c_base
     real(psb_dpk_), intent(in) :: x,y,z
-    c=dzero
-  end function c
-  function a1(x,y,z)
-    use psb_base_mod, only : psb_dpk_
-    real(psb_dpk_) ::  a1
+    c_base=dzero
+  end function c_base
+  function a1_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a1_base
     real(psb_dpk_), intent(in) :: x,y,z
-    a1=epsilon
-  end function a1
-  function a2(x,y,z)
-    use psb_base_mod, only : psb_dpk_
-    real(psb_dpk_) ::  a2
+    a1_base=epsilon
+  end function a1_base
+  function a2_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a2_base
     real(psb_dpk_), intent(in) :: x,y,z
-    a2=epsilon
-  end function a2
-  function a3(x,y,z)
-    use psb_base_mod, only : psb_dpk_
-    real(psb_dpk_) ::  a3
+    a2_base=epsilon
+  end function a2_base
+  function a3_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a3_base
     real(psb_dpk_), intent(in) :: x,y,z
-    a3=epsilon
-  end function a3
-  function g(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done, dzero
-    real(psb_dpk_) ::  g
+    a3_base=epsilon
+  end function a3_base
+  function g_base(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  g_base
     real(psb_dpk_), intent(in) :: x,y,z
-    g = dzero
+    g_base = dzero
     if (x == done) then
-      g = done
+      g_base = done
     else if (x == dzero) then
-      g = done
+      g_base = done
     end if
-  end function g
+  end function g_base
 end module amg_d_pde3d_base_mod

samples/advanced/pdegen/amg_d_pde3d_box_mod.f90

@@ -0,0 +1,101 @@
+!
+!
+!                             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.
+!
+module amg_d_pde3d_box_mod
+  use psb_base_mod, only : psb_dpk_, done, dzero
+  real(psb_dpk_), save, private :: epsilon=done/80
+contains
+  subroutine pde_set_parm3d_box(dat)
+    real(psb_dpk_), intent(in) :: dat
+    epsilon = dat
+  end subroutine pde_set_parm3d_box
+  !
+  ! functions parametrizing the differential equation
+  !
+  function b1_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) :: b1_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    b1_box=done/sqrt(3.0_psb_dpk_)
+  end function b1_box
+  function b2_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  b2_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    b2_box=done/sqrt(3.0_psb_dpk_)
+  end function b2_box
+  function b3_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  b3_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    b3_box=done/sqrt(3.0_psb_dpk_)
+  end function b3_box
+  function c_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  c_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    c_box=dzero
+  end function c_box
+  function a1_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a1_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    a1_box=epsilon
+  end function a1_box
+  function a2_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a2_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    a2_box=epsilon
+  end function a2_box
+  function a3_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  a3_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    a3_box=epsilon
+  end function a3_box
+  function g_box(x,y,z)
+    implicit none 
+    real(psb_dpk_) ::  g_box
+    real(psb_dpk_), intent(in) :: x,y,z
+    g_box= dzero
+    if (x == done) then
+      g_box = done
+    else if (x == dzero) then
+      g_box = done
+    end if
+  end function g_box
+end module amg_d_pde3d_box_mod

samples/advanced/pdegen/amg_d_pde3d_exp_mod.f90

@@ -35,60 +35,60 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_d_pde3d_exp_mod
-  use psb_base_mod, only : psb_dpk_, done
+  use psb_base_mod, only : psb_dpk_, done, dzero
   real(psb_dpk_), save, private :: epsilon=done/160
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_exp(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_exp
   !
   ! functions parametrizing the differential equation
   !
   function b1_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero
+    implicit none 
     real(psb_dpk_) :: b1_exp
     real(psb_dpk_), intent(in) :: x,y,z
     b1_exp=dzero/sqrt(3.0_psb_dpk_)
   end function b1_exp
   function b2_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero
+    implicit none 
     real(psb_dpk_) ::  b2_exp
     real(psb_dpk_), intent(in) :: x,y,z
     b2_exp=dzero/sqrt(3.0_psb_dpk_)
   end function b2_exp
   function b3_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero
+    implicit none 
     real(psb_dpk_) ::  b3_exp
     real(psb_dpk_), intent(in) :: x,y,z
     b3_exp=dzero/sqrt(3.0_psb_dpk_)
   end function b3_exp
   function c_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero
+    implicit none 
     real(psb_dpk_) ::  c_exp
     real(psb_dpk_), intent(in) :: x,y,z
     c_exp=dzero
   end function c_exp
   function a1_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a1_exp
     real(psb_dpk_), intent(in) :: x,y,z
     a1_exp=epsilon*exp(-(x+y+z))
   end function a1_exp
   function a2_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a2_exp
     real(psb_dpk_), intent(in) :: x,y,z
     a2_exp=epsilon*exp(-(x+y+z))
   end function a2_exp
   function a3_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a3_exp
     real(psb_dpk_), intent(in) :: x,y,z
     a3_exp=epsilon*exp(-(x+y+z))
   end function a3_exp
   function g_exp(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  g_exp
     real(psb_dpk_), intent(in) :: x,y,z
     g_exp = dzero

samples/advanced/pdegen/amg_d_pde3d_gauss_mod.f90

@@ -35,60 +35,60 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_d_pde3d_gauss_mod
-  use psb_base_mod, only : psb_dpk_, done
+  use psb_base_mod, only : psb_dpk_, done, dzero
   real(psb_dpk_), save, private :: epsilon=done/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_gauss(dat)
     real(psb_dpk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_gauss
   !
   ! functions parametrizing the differential equation
   !
   function b1_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
+    implicit none 
     real(psb_dpk_) :: b1_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     b1_gauss=done/sqrt(3.0_psb_dpk_)-2*x*exp(-(x**2+y**2+z**2))
   end function b1_gauss
   function b2_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
+    implicit none 
     real(psb_dpk_) ::  b2_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     b2_gauss=done/sqrt(3.0_psb_dpk_)-2*y*exp(-(x**2+y**2+z**2))
   end function b2_gauss
   function b3_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done
+    implicit none 
     real(psb_dpk_) ::  b3_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     b3_gauss=done/sqrt(3.0_psb_dpk_)-2*z*exp(-(x**2+y**2+z**2))
   end function b3_gauss
   function c_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_, dzero
+    implicit none 
     real(psb_dpk_) ::  c_gauss
     real(psb_dpk_), intent(in) :: x,y,z
-    c=dzero
+    c_gauss=dzero
   end function c_gauss
   function a1_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a1_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     a1_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a1_gauss
   function a2_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a2_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     a2_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a2_gauss
   function a3_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_
+    implicit none 
     real(psb_dpk_) ::  a3_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     a3_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a3_gauss
   function g_gauss(x,y,z)
-    use psb_base_mod, only : psb_dpk_, done, dzero
+    implicit none 
     real(psb_dpk_) ::  g_gauss
     real(psb_dpk_), intent(in) :: x,y,z
     g_gauss = dzero

samples/advanced/pdegen/amg_s_pde2d.F90

@@ -72,6 +72,7 @@ program amg_s_pde2d
   use amg_s_pde2d_base_mod
   use amg_s_pde2d_exp_mod
   use amg_s_pde2d_box_mod
+  use amg_s_pde2d_gauss_mod
   use amg_s_genpde_mod
 #if defined(OPENMP)
   use omp_lib
@@ -124,16 +125,16 @@ program amg_s_pde2d
     integer(psb_ipk_)  :: outer_sweeps ! number of outer sweeps: sweeps for 1-level,
     ! AMG cycles for ML
     ! general AMG data
-    character(len=16)  :: mlcycle      ! AMG cycle type
+    character(len=32)  :: mlcycle      ! AMG cycle type
     integer(psb_ipk_)  :: maxlevs     ! maximum number of levels in AMG preconditioner
 
     ! AMG aggregation
-    character(len=16)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
-    character(len=16)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
-    character(len=16)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
+    character(len=32)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
+    character(len=32)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
+    character(len=32)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
     integer(psb_ipk_)  :: aggr_size   ! Requested size of the aggregates for MATCHBOXP
-    character(len=16)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
-    character(len=16)  :: aggr_filter ! filtering: FILTER, NO_FILTER
+    character(len=32)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
+    character(len=32)  :: aggr_filter ! filtering: FILTER, NO_FILTER
     real(psb_spk_)     :: mncrratio  ! minimum aggregation ratio
     real(psb_spk_), allocatable :: athresv(:) ! smoothed aggregation threshold vector
     integer(psb_ipk_)  :: thrvsz      ! size of threshold vector
@@ -141,37 +142,39 @@ program amg_s_pde2d
     integer(psb_ipk_)  :: csizepp     ! minimum size of coarsest matrix per process
 
     ! AMG smoother or pre-smoother; also 1-lev preconditioner
-    character(len=16)  :: smther      ! (pre-)smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps     ! (pre-)smoother / 1-lev prec. sweeps
-    integer(psb_ipk_)  :: novr        ! number of overlap layers
-    character(len=16)  :: restr       ! restriction over application of AS
-    character(len=16)  :: prol        ! prolongation over application of AS
-    character(len=16)  :: solve       ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant     ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill        ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill     ! Inverse fill-in for INVK
-    real(psb_spk_)     :: thr         ! threshold for ILUT factorization
+    character(len=32)  :: smther       ! (pre-)smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps      ! (pre-)smoother / 1-lev prec. sweeps
+    integer(psb_ipk_)  :: novr         ! number of overlap layers
+    character(len=32)  :: restr        ! restriction over application of AS
+    character(len=32)  :: prol         ! prolongation over application of AS
+    character(len=32)  :: solve        ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps      ! inner solver sweeps
+    character(len=32)  :: variant      ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill         ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill      ! Inverse fill-in for INVK
+    real(psb_spk_)      :: thr          ! threshold for ILUT factorization
 
     ! AMG post-smoother; ignored by 1-lev preconditioner
-    character(len=16)  :: smther2     ! post-smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps2    ! post-smoother sweeps
-    integer(psb_ipk_)  :: novr2       ! number of overlap layers
-    character(len=16)  :: restr2      ! restriction  over application of AS
-    character(len=16)  :: prol2       ! prolongation over application of AS
-    character(len=16)  :: solve2      ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant2    ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill2       ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill2    ! Inverse fill-in for INVK
-    real(psb_spk_)      :: thr2        ! threshold for ILUT factorization
+    character(len=32)  :: smther2      ! post-smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps2     ! post-smoother sweeps
+    integer(psb_ipk_)  :: novr2        ! number of overlap layers
+    character(len=32)  :: restr2       ! restriction  over application of AS
+    character(len=32)  :: prol2        ! prolongation over application of AS
+    character(len=32)  :: solve2       ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps2     ! inner solver sweeps
+    character(len=32)  :: variant2     ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill2        ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill2     ! Inverse fill-in for INVK
+    real(psb_spk_)      :: thr2         ! threshold for ILUT factorization
 
     ! coarsest-level solver
-    character(len=16)  :: cmat        ! coarsest matrix layout: REPL, DIST
-    character(len=16)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
+    character(len=32)  :: cmat        ! coarsest matrix layout: REPL, DIST
+    character(len=32)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
                                       ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
                                       ! (repl. mat.)
-    character(len=16)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
+    character(len=32)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
                                       ! MILU, UMF, MUMPS, SLU
     integer(psb_ipk_)  :: cfill       ! fill-in for incomplete LU factorization
     real(psb_spk_)     :: cthres      ! threshold for ILUT factorization
@@ -239,13 +242,16 @@ program amg_s_pde2d
   select case(psb_toupper(trim(pdecoeff)))
   case("CONST")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
-        & a1,a2,b1,b2,c,g,info)
+        & a1_base,a2_base,b1_base,b2_base,c_base,g_base,info)
   case("EXP")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_exp,a2_exp,b1_exp,b2_exp,c_exp,g_exp,info)
   case("BOX")
     call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_box,a2_box,b1_box,b2_box,c_box,g_box,info)
+  case("GAUSS")
+    call amg_gen_pde2d(ctxt,idim,a,b,x,desc_a,afmt,&
+        & a1_gauss,a2_gauss,b1_gauss,b2_gauss,c_gauss,g_gauss,info)
   case default
     info=psb_err_from_subroutine_
     ch_err='amg_gen_pdecoeff'
@@ -282,6 +288,9 @@ program amg_s_pde2d
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -291,6 +300,9 @@ program amg_s_pde2d
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -342,8 +354,10 @@ program amg_s_pde2d
         call prec%set('ainv_alg', p_choice%variant,   info)
       case default
         call prec%set('sub_solve',       p_choice%solve,   info)
+        if (psb_toupper(p_choice%solve)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
       end select
-
+      call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('inv_fillin',      p_choice%invfill,    info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
@@ -369,8 +383,10 @@ program amg_s_pde2d
           call prec%set('ainv_alg', p_choice%variant2,   info)
         case default
           call prec%set('sub_solve',       p_choice%solve2,   info, pos='post')
+          if (psb_toupper(p_choice%solve2)=='MUMPS') &
+               & call prec%set('mumps_loc_glob','local_solver',info)
         end select
-
+        call prec%set('solver_sweeps',   p_choice%ssweeps2,   info,pos='post')
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('inv_fillin',      p_choice%invfill2,  info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
@@ -569,6 +585,7 @@ contains
       call read_data(prec%restr,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant,inp_unit)    ! AINV variant
       call read_data(prec%fill,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill,inp_unit)    !Inverse fill-in for INVK
@@ -580,6 +597,7 @@ contains
       call read_data(prec%restr2,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol2,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve2,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps2,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant2,inp_unit)    ! AINV variant
       call read_data(prec%fill2,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill2,inp_unit)    !Inverse fill-in for INVK
@@ -649,6 +667,7 @@ contains
     call psb_bcast(ctxt,prec%restr)
     call psb_bcast(ctxt,prec%prol)
     call psb_bcast(ctxt,prec%solve)
+    call psb_bcast(ctxt,prec%ssweeps)
     call psb_bcast(ctxt,prec%variant)
     call psb_bcast(ctxt,prec%fill)
     call psb_bcast(ctxt,prec%invfill)
@@ -660,6 +679,7 @@ contains
     call psb_bcast(ctxt,prec%restr2)
     call psb_bcast(ctxt,prec%prol2)
     call psb_bcast(ctxt,prec%solve2)
+    call psb_bcast(ctxt,prec%ssweeps2)
     call psb_bcast(ctxt,prec%variant2)
     call psb_bcast(ctxt,prec%fill2)
     call psb_bcast(ctxt,prec%invfill2)

samples/advanced/pdegen/amg_s_pde2d_base_mod.f90

@@ -38,52 +38,52 @@ module amg_s_pde2d_base_mod
   use psb_base_mod, only : psb_spk_, szero, sone
   real(psb_spk_), save, private :: epsilon=sone/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_base(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_base
   !
   ! functions parametrizing the differential equation
   !
-  function b1(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) :: b1
+  function b1_base(x,y)
+    implicit none 
+    real(psb_spk_) :: b1_base
     real(psb_spk_), intent(in) :: x,y
-    b1 = szero/1.414_psb_spk_
-  end function b1
-  function b2(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  b2
+    b1_base = szero/1.414_psb_spk_
+  end function b1_base
+  function b2_base(x,y)
+    implicit none 
+    real(psb_spk_) ::  b2_base
     real(psb_spk_), intent(in) :: x,y
-    b2 = szero/1.414_psb_spk_
-  end function b2
-  function c(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  c
+    b2_base = szero/1.414_psb_spk_
+  end function b2_base
+  function c_base(x,y)
+    implicit none 
+    real(psb_spk_) ::  c_base
     real(psb_spk_), intent(in) :: x,y
-    c = szero
-  end function c
-  function a1(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  a1
+    c_base = szero
+  end function c_base
+  function a1_base(x,y)
+    implicit none 
+    real(psb_spk_) ::  a1_base
     real(psb_spk_), intent(in) :: x,y
-    a1=sone*epsilon
-  end function a1
-  function a2(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  a2
+    a1_base=sone*epsilon
+  end function a1_base
+  function a2_base(x,y)
+    implicit none 
+    real(psb_spk_) ::  a2_base
     real(psb_spk_), intent(in) :: x,y
-    a2=sone*epsilon
-  end function a2
-  function g(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  g
+    a2_base=sone*epsilon
+  end function a2_base
+  function g_base(x,y)
+    implicit none 
+    real(psb_spk_) ::  g_base
     real(psb_spk_), intent(in) :: x,y
-    g = szero
+    g_base = szero
     if (x == sone) then
-      g = sone
+      g_base = sone
     else if (x == szero) then
-      g = sone
+      g_base = sone
     end if
-  end function g
+  end function g_base
 end module amg_s_pde2d_base_mod

samples/advanced/pdegen/amg_s_pde2d_box_mod.f90

@@ -38,45 +38,45 @@ module amg_s_pde2d_box_mod
   use psb_base_mod, only : psb_spk_, szero, sone
   real(psb_spk_), save, private :: epsilon=sone/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_box(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_box
   !
   ! functions parametrizing the differential equation
   !
   function b1_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) :: b1_box
     real(psb_spk_), intent(in) :: x,y
     b1_box = sone/1.414_psb_spk_
   end function b1_box
   function b2_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) ::  b2_box
     real(psb_spk_), intent(in) :: x,y
     b2_box = sone/1.414_psb_spk_
   end function b2_box
   function c_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) ::  c_box
     real(psb_spk_), intent(in) :: x,y
     c_box = szero
   end function c_box
   function a1_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) ::  a1_box
     real(psb_spk_), intent(in) :: x,y
     a1_box=sone*epsilon
   end function a1_box
   function a2_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) ::  a2_box
     real(psb_spk_), intent(in) :: x,y
     a2_box=sone*epsilon
   end function a2_box
   function g_box(x,y)
-    use psb_base_mod, only : psb_spk_, szero, sone
+    implicit none 
     real(psb_spk_) ::  g_box
     real(psb_spk_), intent(in) :: x,y
     g_box = szero

samples/advanced/pdegen/amg_s_pde2d_exp_mod.f90

@@ -38,45 +38,45 @@ module amg_s_pde2d_exp_mod
   use psb_base_mod, only : psb_spk_, sone, szero
   real(psb_spk_), save, private :: epsilon=sone/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm2d_exp(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm2d_exp
   !
   ! functions parametrizing the differential equation
   !
   function b1_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) :: b1_exp
     real(psb_spk_), intent(in) :: x,y
     b1_exp = szero
   end function b1_exp
   function b2_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  b2_exp
     real(psb_spk_), intent(in) :: x,y
     b2_exp = szero
   end function b2_exp
   function c_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  c_exp
     real(psb_spk_), intent(in) :: x,y
     c_exp = szero
   end function c_exp
   function a1_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  a1_exp
     real(psb_spk_), intent(in) :: x,y
-    a1=sone*epsilon*exp(-(x+y))
+    a1_exp=sone*epsilon*exp(-(x+y))
   end function a1_exp
   function a2_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  a2_exp
     real(psb_spk_), intent(in) :: x,y
-    a2=sone*epsilon*exp(-(x+y))
+    a2_exp=sone*epsilon*exp(-(x+y))
   end function a2_exp
   function g_exp(x,y)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  g_exp
     real(psb_spk_), intent(in) :: x,y
     g_exp = szero

samples/advanced/pdegen/amg_s_pde2d_gauss_mod.f90

@@ -0,0 +1,89 @@
+!
+!
+!                             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.
+!
+module amg_s_pde2d_gauss_mod
+  use psb_base_mod, only : psb_spk_, sone, szero
+  real(psb_spk_), save, private :: epsilon=sone/80
+contains
+  subroutine pde_set_parm2d_gauss(dat)
+    real(psb_spk_), intent(in) :: dat
+    epsilon = dat
+  end subroutine pde_set_parm2d_gauss
+  !
+  ! functions parametrizing the differential equation
+  !
+  function b1_gauss(x,y)
+    implicit none 
+    real(psb_spk_) :: b1_gauss
+    real(psb_spk_), intent(in) :: x,y
+    b1_gauss=sone/sqrt(3.0_psb_spk_)-2*x*exp(-(x**2+y**2))
+  end function b1_gauss
+  function b2_gauss(x,y)
+    implicit none 
+    real(psb_spk_) ::  b2_gauss
+    real(psb_spk_), intent(in) :: x,y
+    b2_gauss=sone/sqrt(3.0_psb_spk_)-2*y*exp(-(x**2+y**2))
+  end function b2_gauss
+  function c_gauss(x,y)
+    implicit none 
+    real(psb_spk_) ::  c_gauss
+    real(psb_spk_), intent(in) :: x,y
+    c_gauss=szero
+  end function c_gauss
+  function a1_gauss(x,y)
+    implicit none 
+    real(psb_spk_) ::  a1_gauss
+    real(psb_spk_), intent(in) :: x,y
+    a1_gauss=epsilon*exp(-(x**2+y**2))
+  end function a1_gauss
+  function a2_gauss(x,y)
+    implicit none 
+    real(psb_spk_) ::  a2_gauss
+    real(psb_spk_), intent(in) :: x,y
+    a2_gauss=epsilon*exp(-(x**2+y**2))
+  end function a2_gauss
+  function g_gauss(x,y)
+    implicit none 
+    real(psb_spk_) ::  g_gauss
+    real(psb_spk_), intent(in) :: x,y
+    g_gauss = szero
+    if (x == sone) then
+      g_gauss = sone
+    else if (x == szero) then
+      g_gauss = sone
+    end if
+  end function g_gauss
+end module amg_s_pde2d_gauss_mod

samples/advanced/pdegen/amg_s_pde3d.F90

@@ -72,6 +72,7 @@ program amg_s_pde3d
   use data_input
   use amg_s_pde3d_base_mod
   use amg_s_pde3d_exp_mod
+  use amg_s_pde3d_box_mod
   use amg_s_pde3d_gauss_mod
   use amg_s_genpde_mod
 #if defined(OPENMP)
@@ -125,63 +126,65 @@ program amg_s_pde3d
     integer(psb_ipk_)  :: outer_sweeps ! number of outer sweeps: sweeps for 1-level,
     ! AMG cycles for ML
     ! general AMG data
-    character(len=16)  :: mlcycle      ! AMG cycle type
-    integer(psb_ipk_)  :: maxlevs     ! maximum number of levels in AMG preconditioner
+    character(len=32)  :: mlcycle      ! AMG cycle type
+    integer(psb_ipk_)  :: maxlevs      ! maximum number of levels in AMG preconditioner
 
     ! AMG aggregation
-    character(len=16)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
-    character(len=16)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
-    character(len=16)  :: aggr_type   ! Type of aggregation SOC1, SOC2, MATCHBOXP
-    integer(psb_ipk_)  :: aggr_size   ! Requested size of the aggregates for MATCHBOXP
-    character(len=16)  :: aggr_ord    ! ordering for aggregation: NATURAL, DEGREE
-    character(len=16)  :: aggr_filter ! filtering: FILTER, NO_FILTER
-    real(psb_spk_)     :: mncrratio  ! minimum aggregation ratio
+    character(len=32)  :: aggr_prol    ! aggregation type: SMOOTHED, NONSMOOTHED
+    character(len=32)  :: par_aggr_alg ! parallel aggregation algorithm: DEC, SYMDEC
+    character(len=32)  :: aggr_type    ! Type of aggregation SOC1, SOC2, MATCHBOXP
+    integer(psb_ipk_)  :: aggr_size    ! Requested size of the aggregates for MATCHBOXP
+    character(len=32)  :: aggr_ord     ! ordering for aggregation: NATURAL, DEGREE
+    character(len=32)  :: aggr_filter  ! filtering: FILTER, NO_FILTER
+    real(psb_spk_)      :: mncrratio    ! minimum aggregation ratio
     real(psb_spk_), allocatable :: athresv(:) ! smoothed aggregation threshold vector
-    integer(psb_ipk_)  :: thrvsz      ! size of threshold vector
-    real(psb_spk_)     :: athres      ! smoothed aggregation threshold
-    integer(psb_ipk_)  :: csizepp     ! minimum size of coarsest matrix per process
+    integer(psb_ipk_)  :: thrvsz       ! size of threshold vector
+    real(psb_spk_)      :: athres       ! smoothed aggregation threshold
+    integer(psb_ipk_)  :: csizepp      ! minimum size of coarsest matrix per process
 
     ! AMG smoother or pre-smoother; also 1-lev preconditioner
-    character(len=16)  :: smther      ! (pre-)smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps     ! (pre-)smoother / 1-lev prec. sweeps
-    integer(psb_ipk_)  :: novr        ! number of overlap layers
-    character(len=16)  :: restr       ! restriction over application of AS
-    character(len=16)  :: prol        ! prolongation over application of AS
-    character(len=16)  :: solve       ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant     ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill        ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill     ! Inverse fill-in for INVK
-    real(psb_spk_)     :: thr         ! threshold for ILUT factorization
+    character(len=32)  :: smther       ! (pre-)smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps      ! (pre-)smoother / 1-lev prec. sweeps
+    integer(psb_ipk_)  :: novr         ! number of overlap layers
+    character(len=32)  :: restr        ! restriction over application of AS
+    character(len=32)  :: prol         ! prolongation over application of AS
+    character(len=32)  :: solve        ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps      ! inner solver sweeps
+    character(len=32)  :: variant      ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill         ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill      ! Inverse fill-in for INVK
+    real(psb_spk_)      :: thr          ! threshold for ILUT factorization
 
     ! AMG post-smoother; ignored by 1-lev preconditioner
-    character(len=16)  :: smther2     ! post-smoother type: BJAC, AS
-    integer(psb_ipk_)  :: jsweeps2    ! post-smoother sweeps
-    integer(psb_ipk_)  :: novr2       ! number of overlap layers
-    character(len=16)  :: restr2      ! restriction  over application of AS
-    character(len=16)  :: prol2       ! prolongation over application of AS
-    character(len=16)  :: solve2      ! local subsolver type: ILU, MILU, ILUT,
-                                      ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
-    character(len=16)  :: variant2    ! AINV variant: LLK, etc
-    integer(psb_ipk_)  :: fill2       ! fill-in for incomplete LU factorization
-    integer(psb_ipk_)  :: invfill2    ! Inverse fill-in for INVK
-    real(psb_spk_)      :: thr2        ! threshold for ILUT factorization
+    character(len=32)  :: smther2      ! post-smoother type: BJAC, AS
+    integer(psb_ipk_)  :: jsweeps2     ! post-smoother sweeps
+    integer(psb_ipk_)  :: novr2        ! number of overlap layers
+    character(len=32)  :: restr2       ! restriction  over application of AS
+    character(len=32)  :: prol2        ! prolongation over application of AS
+    character(len=32)  :: solve2       ! local subsolver type: ILU, MILU, ILUT,
+                                       ! UMF, MUMPS, SLU, FWGS, BWGS, JAC
+    integer(psb_ipk_)  :: ssweeps2     ! inner solver sweeps
+    character(len=32)  :: variant2     ! AINV variant: LLK, etc
+    integer(psb_ipk_)  :: fill2        ! fill-in for incomplete LU factorization
+    integer(psb_ipk_)  :: invfill2     ! Inverse fill-in for INVK
+    real(psb_spk_)      :: thr2         ! threshold for ILUT factorization
 
     ! coarsest-level solver
-    character(len=16)  :: cmat        ! coarsest matrix layout: REPL, DIST
-    character(len=16)  :: csolve      ! coarsest-lev solver: BJAC, SLUDIST (distr.
-                                      ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
-                                      ! (repl. mat.)
-    character(len=16)  :: csbsolve    ! coarsest-lev local subsolver: ILU, ILUT,
-                                      ! MILU, UMF, MUMPS, SLU
-    integer(psb_ipk_)  :: cfill       ! fill-in for incomplete LU factorization
-    real(psb_spk_)     :: cthres      ! threshold for ILUT factorization
-    integer(psb_ipk_)  :: cjswp       ! sweeps for GS or JAC coarsest-lev subsolver
+    character(len=32)  :: cmat         ! coarsest matrix layout: REPL, DIST
+    character(len=32)  :: csolve       ! coarsest-lev solver: BJAC, SLUDIST (distr.
+                                       ! mat.); UMF, MUMPS, SLU, ILU, ILUT, MILU
+                                       ! (repl. mat.)
+    character(len=32)  :: csbsolve     ! coarsest-lev local subsolver: ILU, ILUT,
+                                       ! MILU, UMF, MUMPS, SLU
+    integer(psb_ipk_)  :: cfill        ! fill-in for incomplete LU factorization
+    real(psb_spk_)     :: cthres        ! threshold for ILUT factorization
+    integer(psb_ipk_)  :: cjswp        ! sweeps for GS or JAC coarsest-lev subsolver
 
     ! Dump data
     logical            :: dump = .false.
-    integer(psb_ipk_)  :: dlmin       ! Minimum level to dump 
-    integer(psb_ipk_)  :: dlmax       ! Maximum level to dump
+    integer(psb_ipk_)  :: dlmin        ! Minimum level to dump 
+    integer(psb_ipk_)  :: dlmax        ! Maximum level to dump
     logical            :: dump_ac         = .false.
     logical            :: dump_rp         = .false.
     logical            :: dump_tprol      = .false.
@@ -241,10 +244,13 @@ program amg_s_pde3d
   select case(psb_toupper(trim(pdecoeff)))
   case("CONST")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
-        & a1,a2,a3,b1,b2,b3,c,g,info)
+        & a1_base,a2_base,a3_base,b1_base,b2_base,b3_base,c_base,g_base,info)
   case("EXP")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_exp,a2_exp,a3_exp,b1_exp,b2_exp,b3_exp,c_exp,g_exp,info)
+  case("BOX")
+    call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
+        & a1_box,a2_box,a3_box,b1_box,b2_box,b3_box,c_box,g_box,info)
   case("GAUSS")
     call amg_gen_pde3d(ctxt,idim,a,b,x,desc_a,afmt,&
         & a1_gauss,a2_gauss,a3_gauss,b1_gauss,b2_gauss,b3_gauss,c_gauss,g_gauss,info)
@@ -286,6 +292,9 @@ program amg_s_pde3d
   case ('BJAC')
     call prec%set('smoother_sweeps', p_choice%jsweeps, info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -295,6 +304,9 @@ program amg_s_pde3d
     call prec%set('sub_restr',       p_choice%restr,   info)
     call prec%set('sub_prol',        p_choice%prol,    info)
     call prec%set('sub_solve',       p_choice%solve,   info)
+    call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
+    if (psb_toupper(p_choice%solve)=='MUMPS') &
+         & call prec%set('mumps_loc_glob','local_solver',info)
     call prec%set('sub_fillin',      p_choice%fill,    info)
     call prec%set('sub_iluthrs',     p_choice%thr,     info)
 
@@ -346,8 +358,10 @@ program amg_s_pde3d
         call prec%set('ainv_alg', p_choice%variant,   info)
       case default
         call prec%set('sub_solve',       p_choice%solve,   info)
+        if (psb_toupper(p_choice%solve)=='MUMPS') &
+             & call prec%set('mumps_loc_glob','local_solver',info)
       end select
-
+      call prec%set('solver_sweeps',   p_choice%ssweeps,   info)
       call prec%set('sub_fillin',      p_choice%fill,       info)
       call prec%set('inv_fillin',      p_choice%invfill,    info)
       call prec%set('sub_iluthrs',     p_choice%thr,        info)
@@ -373,8 +387,10 @@ program amg_s_pde3d
           call prec%set('ainv_alg', p_choice%variant2,   info)
         case default
           call prec%set('sub_solve',       p_choice%solve2,   info, pos='post')
+          if (psb_toupper(p_choice%solve2)=='MUMPS') &
+               & call prec%set('mumps_loc_glob','local_solver',info)
         end select
-
+        call prec%set('solver_sweeps',   p_choice%ssweeps2,   info,pos='post')
         call prec%set('sub_fillin',      p_choice%fill2,     info,pos='post')
         call prec%set('inv_fillin',      p_choice%invfill2,  info,pos='post')
         call prec%set('sub_iluthrs',     p_choice%thr2,      info,pos='post')
@@ -492,7 +508,7 @@ program amg_s_pde3d
     write(psb_out_unit,'("Storage format for DESC_A          : ",a  )') desc_a%get_fmt()
 
   end if
-  call psb_print_timers(ctxt)
+
   !
   !  cleanup storage and exit
   !
@@ -573,6 +589,7 @@ contains
       call read_data(prec%restr,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant,inp_unit)    ! AINV variant
       call read_data(prec%fill,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill,inp_unit)    !Inverse fill-in for INVK
@@ -584,6 +601,7 @@ contains
       call read_data(prec%restr2,inp_unit)      ! restriction  over application of AS
       call read_data(prec%prol2,inp_unit)       ! prolongation over application of AS
       call read_data(prec%solve2,inp_unit)      ! local subsolver
+      call read_data(prec%ssweeps2,inp_unit)    ! inner solver sweeps 
       call read_data(prec%variant2,inp_unit)    ! AINV variant
       call read_data(prec%fill2,inp_unit)       ! fill-in for incomplete LU
       call read_data(prec%invfill2,inp_unit)    !Inverse fill-in for INVK
@@ -653,6 +671,7 @@ contains
     call psb_bcast(ctxt,prec%restr)
     call psb_bcast(ctxt,prec%prol)
     call psb_bcast(ctxt,prec%solve)
+    call psb_bcast(ctxt,prec%ssweeps)
     call psb_bcast(ctxt,prec%variant)
     call psb_bcast(ctxt,prec%fill)
     call psb_bcast(ctxt,prec%invfill)
@@ -664,6 +683,7 @@ contains
     call psb_bcast(ctxt,prec%restr2)
     call psb_bcast(ctxt,prec%prol2)
     call psb_bcast(ctxt,prec%solve2)
+    call psb_bcast(ctxt,prec%ssweeps2)
     call psb_bcast(ctxt,prec%variant2)
     call psb_bcast(ctxt,prec%fill2)
     call psb_bcast(ctxt,prec%invfill2)

samples/advanced/pdegen/amg_s_pde3d_base_mod.f90

@@ -35,67 +35,67 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_s_pde3d_base_mod
-  use psb_base_mod, only : psb_spk_, sone
+  use psb_base_mod, only : psb_spk_, sone, szero
   real(psb_spk_), save, private :: epsilon=sone/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_base(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_base
   !
   ! functions parametrizing the differential equation
   !
-  function b1(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
-    real(psb_spk_) :: b1
+  function b1_base(x,y,z)
+    implicit none 
+    real(psb_spk_) :: b1_base
     real(psb_spk_), intent(in) :: x,y,z
-    b1=sone/sqrt(3.0_psb_spk_)
-  end function b1
-  function b2(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
-    real(psb_spk_) ::  b2
+    b1_base=szero/sqrt(3.0_psb_spk_)
+  end function b1_base
+  function b2_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  b2_base
     real(psb_spk_), intent(in) :: x,y,z
-    b2=sone/sqrt(3.0_psb_spk_)
-  end function b2
-  function b3(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
-    real(psb_spk_) ::  b3
+    b2_base=szero/sqrt(3.0_psb_spk_)
+  end function b2_base
+  function b3_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  b3_base
     real(psb_spk_), intent(in) :: x,y,z
-    b3=sone/sqrt(3.0_psb_spk_)
-  end function b3
-  function c(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero, sone
-    real(psb_spk_) ::  c
+    b3_base=szero/sqrt(3.0_psb_spk_)
+  end function b3_base
+  function c_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  c_base
     real(psb_spk_), intent(in) :: x,y,z
-    c=szero
-  end function c
-  function a1(x,y,z)
-    use psb_base_mod, only : psb_spk_
-    real(psb_spk_) ::  a1
+    c_base=szero
+  end function c_base
+  function a1_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a1_base
     real(psb_spk_), intent(in) :: x,y,z
-    a1=epsilon
-  end function a1
-  function a2(x,y,z)
-    use psb_base_mod, only : psb_spk_
-    real(psb_spk_) ::  a2
+    a1_base=epsilon
+  end function a1_base
+  function a2_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a2_base
     real(psb_spk_), intent(in) :: x,y,z
-    a2=epsilon
-  end function a2
-  function a3(x,y,z)
-    use psb_base_mod, only : psb_spk_
-    real(psb_spk_) ::  a3
+    a2_base=epsilon
+  end function a2_base
+  function a3_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a3_base
     real(psb_spk_), intent(in) :: x,y,z
-    a3=epsilon
-  end function a3
-  function g(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone, szero
-    real(psb_spk_) ::  g
+    a3_base=epsilon
+  end function a3_base
+  function g_base(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  g_base
     real(psb_spk_), intent(in) :: x,y,z
-    g = szero
+    g_base = szero
     if (x == sone) then
-      g = sone
+      g_base = sone
     else if (x == szero) then
-      g = sone
+      g_base = sone
     end if
-  end function g
+  end function g_base
 end module amg_s_pde3d_base_mod

samples/advanced/pdegen/amg_s_pde3d_box_mod.f90

@@ -0,0 +1,101 @@
+!
+!
+!                             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.
+!
+module amg_s_pde3d_box_mod
+  use psb_base_mod, only : psb_spk_, sone, szero
+  real(psb_spk_), save, private :: epsilon=sone/80
+contains
+  subroutine pde_set_parm3d_box(dat)
+    real(psb_spk_), intent(in) :: dat
+    epsilon = dat
+  end subroutine pde_set_parm3d_box
+  !
+  ! functions parametrizing the differential equation
+  !
+  function b1_box(x,y,z)
+    implicit none 
+    real(psb_spk_) :: b1_box
+    real(psb_spk_), intent(in) :: x,y,z
+    b1_box=sone/sqrt(3.0_psb_spk_)
+  end function b1_box
+  function b2_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  b2_box
+    real(psb_spk_), intent(in) :: x,y,z
+    b2_box=sone/sqrt(3.0_psb_spk_)
+  end function b2_box
+  function b3_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  b3_box
+    real(psb_spk_), intent(in) :: x,y,z
+    b3_box=sone/sqrt(3.0_psb_spk_)
+  end function b3_box
+  function c_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  c_box
+    real(psb_spk_), intent(in) :: x,y,z
+    c_box=szero
+  end function c_box
+  function a1_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a1_box
+    real(psb_spk_), intent(in) :: x,y,z
+    a1_box=epsilon
+  end function a1_box
+  function a2_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a2_box
+    real(psb_spk_), intent(in) :: x,y,z
+    a2_box=epsilon
+  end function a2_box
+  function a3_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  a3_box
+    real(psb_spk_), intent(in) :: x,y,z
+    a3_box=epsilon
+  end function a3_box
+  function g_box(x,y,z)
+    implicit none 
+    real(psb_spk_) ::  g_box
+    real(psb_spk_), intent(in) :: x,y,z
+    g_box= szero
+    if (x == sone) then
+      g_box = sone
+    else if (x == szero) then
+      g_box = sone
+    end if
+  end function g_box
+end module amg_s_pde3d_box_mod

samples/advanced/pdegen/amg_s_pde3d_exp_mod.f90

@@ -35,60 +35,60 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_s_pde3d_exp_mod
-  use psb_base_mod, only : psb_spk_, sone
+  use psb_base_mod, only : psb_spk_, sone, szero
   real(psb_spk_), save, private :: epsilon=sone/160
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_exp(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_exp
   !
   ! functions parametrizing the differential equation
   !
   function b1_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero
+    implicit none 
     real(psb_spk_) :: b1_exp
     real(psb_spk_), intent(in) :: x,y,z
     b1_exp=szero/sqrt(3.0_psb_spk_)
   end function b1_exp
   function b2_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero
+    implicit none 
     real(psb_spk_) ::  b2_exp
     real(psb_spk_), intent(in) :: x,y,z
     b2_exp=szero/sqrt(3.0_psb_spk_)
   end function b2_exp
   function b3_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero
+    implicit none 
     real(psb_spk_) ::  b3_exp
     real(psb_spk_), intent(in) :: x,y,z
     b3_exp=szero/sqrt(3.0_psb_spk_)
   end function b3_exp
   function c_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero
+    implicit none 
     real(psb_spk_) ::  c_exp
     real(psb_spk_), intent(in) :: x,y,z
     c_exp=szero
   end function c_exp
   function a1_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a1_exp
     real(psb_spk_), intent(in) :: x,y,z
     a1_exp=epsilon*exp(-(x+y+z))
   end function a1_exp
   function a2_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a2_exp
     real(psb_spk_), intent(in) :: x,y,z
     a2_exp=epsilon*exp(-(x+y+z))
   end function a2_exp
   function a3_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a3_exp
     real(psb_spk_), intent(in) :: x,y,z
     a3_exp=epsilon*exp(-(x+y+z))
   end function a3_exp
   function g_exp(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  g_exp
     real(psb_spk_), intent(in) :: x,y,z
     g_exp = szero

samples/advanced/pdegen/amg_s_pde3d_gauss_mod.f90

@@ -35,60 +35,60 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 module amg_s_pde3d_gauss_mod
-  use psb_base_mod, only : psb_spk_, sone
+  use psb_base_mod, only : psb_spk_, sone, szero
   real(psb_spk_), save, private :: epsilon=sone/80
 contains
-  subroutine pde_set_parm(dat)
+  subroutine pde_set_parm3d_gauss(dat)
     real(psb_spk_), intent(in) :: dat
     epsilon = dat
-  end subroutine pde_set_parm
+  end subroutine pde_set_parm3d_gauss
   !
   ! functions parametrizing the differential equation
   !
   function b1_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
+    implicit none 
     real(psb_spk_) :: b1_gauss
     real(psb_spk_), intent(in) :: x,y,z
     b1_gauss=sone/sqrt(3.0_psb_spk_)-2*x*exp(-(x**2+y**2+z**2))
   end function b1_gauss
   function b2_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
+    implicit none 
     real(psb_spk_) ::  b2_gauss
     real(psb_spk_), intent(in) :: x,y,z
     b2_gauss=sone/sqrt(3.0_psb_spk_)-2*y*exp(-(x**2+y**2+z**2))
   end function b2_gauss
   function b3_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone
+    implicit none 
     real(psb_spk_) ::  b3_gauss
     real(psb_spk_), intent(in) :: x,y,z
     b3_gauss=sone/sqrt(3.0_psb_spk_)-2*z*exp(-(x**2+y**2+z**2))
   end function b3_gauss
   function c_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_, szero
+    implicit none 
     real(psb_spk_) ::  c_gauss
     real(psb_spk_), intent(in) :: x,y,z
-    c=szero
+    c_gauss=szero
   end function c_gauss
   function a1_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a1_gauss
     real(psb_spk_), intent(in) :: x,y,z
     a1_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a1_gauss
   function a2_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a2_gauss
     real(psb_spk_), intent(in) :: x,y,z
     a2_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a2_gauss
   function a3_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_
+    implicit none 
     real(psb_spk_) ::  a3_gauss
     real(psb_spk_), intent(in) :: x,y,z
     a3_gauss=epsilon*exp(-(x**2+y**2+z**2))
   end function a3_gauss
   function g_gauss(x,y,z)
-    use psb_base_mod, only : psb_spk_, sone, szero
+    implicit none 
     real(psb_spk_) ::  g_gauss
     real(psb_spk_), intent(in) :: x,y,z
     g_gauss = szero

samples/advanced/pdegen/runs/amg_pde2d.inp

@@ -18,6 +18,7 @@ BJAC                        ! Smoother type JACOBI FBGS GS BWGS BJAC AS. For 1-l
 HALO                        ! AS restriction operator: NONE HALO
 NONE                        ! AS prolongation operator: NONE SUM AVG
 ILU                         ! Subdomain solver for BJAC/AS: JACOBI GS BGS ILU ILUT MILU MUMPS SLU UMF
+8                           ! Inner solver sweeps (GS and JACOBI)
 LLK                         ! AINV variant, ignored otherwise
 0                           ! Fill level P for ILU(P) and ILU(T,P)
 1                           ! Inverse Fill level P for INVK
@@ -29,6 +30,7 @@ NONE                        ! Second (post) smoother, ignored if NONE
 HALO                        ! AS restriction operator: NONE HALO
 NONE                        ! AS prolongation operator: NONE SUM AVG
 ILU                         ! Subdomain solver for BJAC/AS: JACOBI GS BGS ILU ILUT MILU MUMPS SLU UMF
+8                           ! Inner solver sweeps (GS and JACOBI)
 LLK                         ! AINV variant, ignored otherwise
 0                           ! Fill level P for ILU(P) and ILU(T,P)
 8                           ! Inverse Fill level P for INVK