Added modules and implementation for INVT/INVK solver

amgprec/Makefile

@@ -15,7 +15,7 @@ DMODOBJS=amg_d_prec_type.o \
 	amg_d_base_aggregator_mod.o \
 	amg_d_dec_aggregator_mod.o amg_d_symdec_aggregator_mod.o \
 	amg_d_ainv_solver.o amg_d_base_ainv_mod.o \
-	amg_d_invk_solver.o
+	amg_d_invk_solver.o amg_d_invt_solver.o
 #amg_d_bcmatch_aggregator_mod.o
 
 SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.o \
@@ -26,7 +26,7 @@ SMODOBJS=amg_s_prec_type.o amg_s_ilu_fact_mod.o \
 	amg_s_base_aggregator_mod.o  \
 	amg_s_dec_aggregator_mod.o amg_s_symdec_aggregator_mod.o \
 	amg_s_ainv_solver.o amg_s_base_ainv_mod.o \
-	amg_s_invk_solver.o
+	amg_s_invk_solver.o amg_s_invt_solver.o
 
 ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.o \
 	amg_z_inner_mod.o amg_z_ilu_solver.o amg_z_diag_solver.o amg_z_jac_smoother.o amg_z_as_smoother.o \
@@ -36,7 +36,7 @@ ZMODOBJS=amg_z_prec_type.o amg_z_ilu_fact_mod.o \
 	amg_z_base_aggregator_mod.o  \
 	amg_z_dec_aggregator_mod.o amg_z_symdec_aggregator_mod.o \
 	amg_z_ainv_solver.o amg_z_base_ainv_mod.o \
-	amg_z_invk_solver.o
+	amg_z_invk_solver.o amg_z_invt_solver.o
 
 CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.o \
 	amg_c_inner_mod.o amg_c_ilu_solver.o amg_c_diag_solver.o amg_c_jac_smoother.o amg_c_as_smoother.o \
@@ -46,7 +46,7 @@ CMODOBJS=amg_c_prec_type.o amg_c_ilu_fact_mod.o \
 	amg_c_base_aggregator_mod.o  \
 	amg_c_dec_aggregator_mod.o amg_c_symdec_aggregator_mod.o \
 	amg_c_ainv_solver.o amg_c_base_ainv_mod.o \
-	amg_c_invk_solver.o
+	amg_c_invk_solver.o amg_c_invt_solver.o
 
 
 
@@ -182,6 +182,10 @@ amg_s_invk_solver.o: amg_base_ainv_mod.o amg_s_base_ainv_mod.o
 amg_d_invk_solver.o: amg_base_ainv_mod.o amg_d_base_ainv_mod.o
 amg_c_invk_solver.o: amg_base_ainv_mod.o amg_c_base_ainv_mod.o
 amg_z_invk_solver.o: amg_base_ainv_mod.o amg_z_base_ainv_mod.o
+amg_s_invt_solver.o: amg_base_ainv_mod.o amg_s_base_ainv_mod.o
+amg_d_invt_solver.o: amg_base_ainv_mod.o amg_d_base_ainv_mod.o
+amg_c_invt_solver.o: amg_base_ainv_mod.o amg_c_base_ainv_mod.o
+amg_z_invt_solver.o: amg_base_ainv_mod.o amg_z_base_ainv_mod.o
 
 veryclean: clean
 	/bin/rm -f $(LIBNAME)

amgprec/amg_c_invk_solver.f90

@@ -51,6 +51,8 @@ module amg_c_invk_solver
     procedure, pass(sv) :: clone   => amg_c_invk_solver_clone
     procedure, pass(sv) :: build   => amg_c_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_c_invk_solver_cseti
+    procedure, pass(sv) :: seti    => amg_c_invk_solver_seti
+    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_c_invk_solver_descr
     procedure, pass(sv) :: default => c_invk_solver_default
   end type amg_c_invk_solver_type
@@ -134,6 +136,18 @@ module amg_c_invk_solver
     end subroutine amg_c_invk_solver_descr
   end interface
 
+  interface
+    subroutine amg_c_invk_solver_seti(sv,what,val,info)
+      import :: amg_c_invk_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_c_invk_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_c_invk_solver_seti
+  end interface
+
 contains
 
   subroutine c_invk_solver_default(sv)

amgprec/amg_c_invt_solver.f90

@@ -0,0 +1,194 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_c_invt_solver
+
+  use amg_c_base_solver_mod
+  use amg_c_base_ainv_mod
+  use psb_base_mod, only : psb_c_vect_type
+
+  type, extends(amg_c_base_ainv_solver_type) :: amg_c_invt_solver_type
+    integer(psb_ipk_)   :: fill_in, inv_fill
+    real(psb_spk_)      :: thresh, inv_thresh
+  contains
+    procedure, pass(sv) :: check   => amg_c_invt_solver_check
+    procedure, pass(sv) :: clone   => amg_c_invt_solver_clone
+    procedure, pass(sv) :: build   => amg_c_invt_solver_bld
+    procedure, pass(sv) :: cseti   => amg_c_invt_solver_cseti
+    procedure, pass(sv) :: csetr   => amg_c_invt_solver_csetr
+    procedure, pass(sv) :: seti    => amg_c_invt_solver_seti
+    procedure, pass(sv) :: setr    => amg_c_invt_solver_setr
+    generic, public     :: set     => seti, setr
+    procedure, pass(sv) :: descr   => amg_c_invt_solver_descr
+    procedure, pass(sv) :: default => c_invt_solver_default
+  end type amg_c_invt_solver_type
+
+  private :: c_invt_solver_default
+
+
+  interface
+    subroutine amg_c_invt_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & amg_c_base_solver_type, psb_spk_, amg_c_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_c_invt_solver_type), intent(inout)              :: sv
+      class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_c_invt_solver_clone
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat, &
+       & psb_c_vect_type, psb_c_base_vect_type, psb_spk_,&
+       & amg_c_invt_solver_type, psb_i_base_vect_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      type(psb_cspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_c_invt_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_invt_solver_bld
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_check(sv,info)
+      import :: amg_c_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_c_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_c_invt_solver_check
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_cseti(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat,  psb_ipk_,&
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, amg_c_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_c_invt_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
+    end subroutine amg_c_invt_solver_cseti
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_csetr(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_cspmat_type,  psb_c_base_sparse_mat,  psb_ipk_,&
+           & psb_c_vect_type, psb_c_base_vect_type, psb_spk_, amg_c_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_c_invt_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
+    end subroutine amg_c_invt_solver_csetr
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_descr(sv,info,iout,coarse)
+      import :: psb_spk_, amg_c_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_c_invt_solver_type), intent(in) :: sv
+      integer(psb_ipk_), intent(out)            :: info
+      integer(psb_ipk_), intent(in), optional   :: iout
+      logical, intent(in), optional             :: coarse
+
+    end subroutine amg_c_invt_solver_descr
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_setr(sv,what,val,info)
+      import :: amg_c_invt_solver_type, psb_spk_, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_c_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      real(psb_spk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_c_invt_solver_setr
+  end interface
+
+  interface
+    subroutine amg_c_invt_solver_seti(sv,what,val,info)
+      import :: amg_c_invt_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_c_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine
+  end interface
+
+contains
+
+  subroutine c_invt_solver_default(sv)
+
+    !use psb_base_mod
+
+    Implicit None
+
+    ! Arguments
+    class(amg_c_invt_solver_type), intent(inout) :: sv
+
+    sv%fill_in    = 0
+    sv%inv_fill   = 0
+    sv%thresh     = szero
+    sv%inv_thresh = szero
+
+    return
+  end subroutine c_invt_solver_default
+
+end module amg_c_invt_solver

amgprec/amg_d_invk_solver.f90

@@ -51,6 +51,8 @@ module amg_d_invk_solver
     procedure, pass(sv) :: clone   => amg_d_invk_solver_clone
     procedure, pass(sv) :: build   => amg_d_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_d_invk_solver_cseti
+    procedure, pass(sv) :: seti    => amg_d_invk_solver_seti
+    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_d_invk_solver_descr
     procedure, pass(sv) :: default => d_invk_solver_default
   end type amg_d_invk_solver_type
@@ -134,6 +136,18 @@ module amg_d_invk_solver
     end subroutine amg_d_invk_solver_descr
   end interface
 
+  interface
+    subroutine amg_d_invk_solver_seti(sv,what,val,info)
+      import :: amg_d_invk_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_d_invk_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_d_invk_solver_seti
+  end interface
+
 contains
 
   subroutine d_invk_solver_default(sv)

amgprec/amg_d_invt_solver.f90

@@ -0,0 +1,194 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver
+
+  use amg_d_base_solver_mod
+  use amg_d_base_ainv_mod
+  use psb_base_mod, only : psb_d_vect_type
+
+  type, extends(amg_d_base_ainv_solver_type) :: amg_d_invt_solver_type
+    integer(psb_ipk_)   :: fill_in, inv_fill
+    real(psb_dpk_)      :: thresh, inv_thresh
+  contains
+    procedure, pass(sv) :: check   => amg_d_invt_solver_check
+    procedure, pass(sv) :: clone   => amg_d_invt_solver_clone
+    procedure, pass(sv) :: build   => amg_d_invt_solver_bld
+    procedure, pass(sv) :: cseti   => amg_d_invt_solver_cseti
+    procedure, pass(sv) :: csetr   => amg_d_invt_solver_csetr
+    procedure, pass(sv) :: seti    => amg_d_invt_solver_seti
+    procedure, pass(sv) :: setr    => amg_d_invt_solver_setr
+    generic, public     :: set     => seti, setr
+    procedure, pass(sv) :: descr   => amg_d_invt_solver_descr
+    procedure, pass(sv) :: default => d_invt_solver_default
+  end type amg_d_invt_solver_type
+
+  private :: d_invt_solver_default
+
+
+  interface
+    subroutine amg_d_invt_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & amg_d_base_solver_type, psb_dpk_, amg_d_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_d_invt_solver_type), intent(inout)              :: sv
+      class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_d_invt_solver_clone
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat, &
+       & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_,&
+       & amg_d_invt_solver_type, psb_i_base_vect_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      type(psb_dspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_d_invt_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_invt_solver_bld
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_check(sv,info)
+      import :: amg_d_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_d_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_d_invt_solver_check
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_cseti(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat,  psb_ipk_,&
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, amg_d_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_d_invt_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
+    end subroutine amg_d_invt_solver_cseti
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_csetr(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_dspmat_type,  psb_d_base_sparse_mat,  psb_ipk_,&
+           & psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, amg_d_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_d_invt_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
+    end subroutine amg_d_invt_solver_csetr
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_descr(sv,info,iout,coarse)
+      import :: psb_dpk_, amg_d_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_d_invt_solver_type), intent(in) :: sv
+      integer(psb_ipk_), intent(out)            :: info
+      integer(psb_ipk_), intent(in), optional   :: iout
+      logical, intent(in), optional             :: coarse
+
+    end subroutine amg_d_invt_solver_descr
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_setr(sv,what,val,info)
+      import :: amg_d_invt_solver_type, psb_dpk_, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_d_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      real(psb_dpk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_d_invt_solver_setr
+  end interface
+
+  interface
+    subroutine amg_d_invt_solver_seti(sv,what,val,info)
+      import :: amg_d_invt_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_d_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine
+  end interface
+
+contains
+
+  subroutine d_invt_solver_default(sv)
+
+    !use psb_base_mod
+
+    Implicit None
+
+    ! Arguments
+    class(amg_d_invt_solver_type), intent(inout) :: sv
+
+    sv%fill_in    = 0
+    sv%inv_fill   = 0
+    sv%thresh     = dzero
+    sv%inv_thresh = dzero
+
+    return
+  end subroutine d_invt_solver_default
+
+end module amg_d_invt_solver

amgprec/amg_s_invk_solver.f90

@@ -51,6 +51,8 @@ module amg_s_invk_solver
     procedure, pass(sv) :: clone   => amg_s_invk_solver_clone
     procedure, pass(sv) :: build   => amg_s_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_s_invk_solver_cseti
+    procedure, pass(sv) :: seti    => amg_s_invk_solver_seti
+    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_s_invk_solver_descr
     procedure, pass(sv) :: default => s_invk_solver_default
   end type amg_s_invk_solver_type
@@ -134,6 +136,18 @@ module amg_s_invk_solver
     end subroutine amg_s_invk_solver_descr
   end interface
 
+  interface
+    subroutine amg_s_invk_solver_seti(sv,what,val,info)
+      import :: amg_s_invk_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_s_invk_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_s_invk_solver_seti
+  end interface
+
 contains
 
   subroutine s_invk_solver_default(sv)

amgprec/amg_s_invt_solver.f90

@@ -0,0 +1,194 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver
+
+  use amg_s_base_solver_mod
+  use amg_s_base_ainv_mod
+  use psb_base_mod, only : psb_s_vect_type
+
+  type, extends(amg_s_base_ainv_solver_type) :: amg_s_invt_solver_type
+    integer(psb_ipk_)   :: fill_in, inv_fill
+    real(psb_spk_)      :: thresh, inv_thresh
+  contains
+    procedure, pass(sv) :: check   => amg_s_invt_solver_check
+    procedure, pass(sv) :: clone   => amg_s_invt_solver_clone
+    procedure, pass(sv) :: build   => amg_s_invt_solver_bld
+    procedure, pass(sv) :: cseti   => amg_s_invt_solver_cseti
+    procedure, pass(sv) :: csetr   => amg_s_invt_solver_csetr
+    procedure, pass(sv) :: seti    => amg_s_invt_solver_seti
+    procedure, pass(sv) :: setr    => amg_s_invt_solver_setr
+    generic, public     :: set     => seti, setr
+    procedure, pass(sv) :: descr   => amg_s_invt_solver_descr
+    procedure, pass(sv) :: default => s_invt_solver_default
+  end type amg_s_invt_solver_type
+
+  private :: s_invt_solver_default
+
+
+  interface
+    subroutine amg_s_invt_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & amg_s_base_solver_type, psb_spk_, amg_s_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_s_invt_solver_type), intent(inout)              :: sv
+      class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_s_invt_solver_clone
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat, &
+       & psb_s_vect_type, psb_s_base_vect_type, psb_spk_,&
+       & amg_s_invt_solver_type, psb_i_base_vect_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      type(psb_sspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_s_invt_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_invt_solver_bld
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_check(sv,info)
+      import :: amg_s_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_s_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_s_invt_solver_check
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_cseti(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat,  psb_ipk_,&
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, amg_s_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_s_invt_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
+    end subroutine amg_s_invt_solver_cseti
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_csetr(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_sspmat_type,  psb_s_base_sparse_mat,  psb_ipk_,&
+           & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, amg_s_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_s_invt_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
+    end subroutine amg_s_invt_solver_csetr
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_descr(sv,info,iout,coarse)
+      import :: psb_spk_, amg_s_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_s_invt_solver_type), intent(in) :: sv
+      integer(psb_ipk_), intent(out)            :: info
+      integer(psb_ipk_), intent(in), optional   :: iout
+      logical, intent(in), optional             :: coarse
+
+    end subroutine amg_s_invt_solver_descr
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_setr(sv,what,val,info)
+      import :: amg_s_invt_solver_type, psb_spk_, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_s_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      real(psb_spk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_s_invt_solver_setr
+  end interface
+
+  interface
+    subroutine amg_s_invt_solver_seti(sv,what,val,info)
+      import :: amg_s_invt_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_s_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine
+  end interface
+
+contains
+
+  subroutine s_invt_solver_default(sv)
+
+    !use psb_base_mod
+
+    Implicit None
+
+    ! Arguments
+    class(amg_s_invt_solver_type), intent(inout) :: sv
+
+    sv%fill_in    = 0
+    sv%inv_fill   = 0
+    sv%thresh     = szero
+    sv%inv_thresh = szero
+
+    return
+  end subroutine s_invt_solver_default
+
+end module amg_s_invt_solver

amgprec/amg_z_invk_solver.f90

@@ -51,6 +51,8 @@ module amg_z_invk_solver
     procedure, pass(sv) :: clone   => amg_z_invk_solver_clone
     procedure, pass(sv) :: build   => amg_z_invk_solver_bld
     procedure, pass(sv) :: cseti   => amg_z_invk_solver_cseti
+    procedure, pass(sv) :: seti    => amg_z_invk_solver_seti
+    generic, public     :: set     => seti
     procedure, pass(sv) :: descr   => amg_z_invk_solver_descr
     procedure, pass(sv) :: default => z_invk_solver_default
   end type amg_z_invk_solver_type
@@ -134,6 +136,18 @@ module amg_z_invk_solver
     end subroutine amg_z_invk_solver_descr
   end interface
 
+  interface
+    subroutine amg_z_invk_solver_seti(sv,what,val,info)
+      import :: amg_z_invk_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_z_invk_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_z_invk_solver_seti
+  end interface
+
 contains
 
   subroutine z_invk_solver_default(sv)

amgprec/amg_z_invt_solver.f90

@@ -0,0 +1,194 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_z_invt_solver
+
+  use amg_z_base_solver_mod
+  use amg_z_base_ainv_mod
+  use psb_base_mod, only : psb_z_vect_type
+
+  type, extends(amg_z_base_ainv_solver_type) :: amg_z_invt_solver_type
+    integer(psb_ipk_)   :: fill_in, inv_fill
+    real(psb_dpk_)      :: thresh, inv_thresh
+  contains
+    procedure, pass(sv) :: check   => amg_z_invt_solver_check
+    procedure, pass(sv) :: clone   => amg_z_invt_solver_clone
+    procedure, pass(sv) :: build   => amg_z_invt_solver_bld
+    procedure, pass(sv) :: cseti   => amg_z_invt_solver_cseti
+    procedure, pass(sv) :: csetr   => amg_z_invt_solver_csetr
+    procedure, pass(sv) :: seti    => amg_z_invt_solver_seti
+    procedure, pass(sv) :: setr    => amg_z_invt_solver_setr
+    generic, public     :: set     => seti, setr
+    procedure, pass(sv) :: descr   => amg_z_invt_solver_descr
+    procedure, pass(sv) :: default => z_invt_solver_default
+  end type amg_z_invt_solver_type
+
+  private :: z_invt_solver_default
+
+
+  interface
+    subroutine amg_z_invt_solver_clone(sv,svout,info)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & amg_z_base_solver_type, psb_dpk_, amg_z_invt_solver_type, psb_ipk_
+      Implicit None
+      class(amg_z_invt_solver_type), intent(inout)              :: sv
+      class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+      integer(psb_ipk_), intent(out)                            :: info
+    end subroutine amg_z_invt_solver_clone
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat, &
+       & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_,&
+       & amg_z_invt_solver_type, psb_i_base_vect_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      type(psb_zspmat_type), intent(in), target           :: a
+      Type(psb_desc_type), Intent(inout)                  :: desc_a
+      class(amg_z_invt_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_invt_solver_bld
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_check(sv,info)
+      import :: amg_z_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_z_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_z_invt_solver_check
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_cseti(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat,  psb_ipk_,&
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, amg_z_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_z_invt_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
+    end subroutine amg_z_invt_solver_cseti
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_csetr(sv,what,val,info,idx)
+      import :: psb_desc_type, psb_zspmat_type,  psb_z_base_sparse_mat,  psb_ipk_,&
+           & psb_z_vect_type, psb_z_base_vect_type, psb_dpk_, amg_z_invt_solver_type
+      Implicit None
+      ! Arguments
+      class(amg_z_invt_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
+    end subroutine amg_z_invt_solver_csetr
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_descr(sv,info,iout,coarse)
+      import :: psb_dpk_, amg_z_invt_solver_type, psb_ipk_
+
+      Implicit None
+
+      ! Arguments
+      class(amg_z_invt_solver_type), intent(in) :: sv
+      integer(psb_ipk_), intent(out)            :: info
+      integer(psb_ipk_), intent(in), optional   :: iout
+      logical, intent(in), optional             :: coarse
+
+    end subroutine amg_z_invt_solver_descr
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_setr(sv,what,val,info)
+      import :: amg_z_invt_solver_type, psb_dpk_, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_z_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      real(psb_dpk_), intent(in)                   :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine amg_z_invt_solver_setr
+  end interface
+
+  interface
+    subroutine amg_z_invt_solver_seti(sv,what,val,info)
+      import :: amg_z_invt_solver_type, psb_ipk_
+      Implicit none
+      ! Arguments
+      class(amg_z_invt_solver_type), intent(inout) :: sv
+      integer(psb_ipk_), intent(in)                :: what
+      integer(psb_ipk_), intent(in)                :: val
+      integer(psb_ipk_), intent(out)               :: info
+    end subroutine
+  end interface
+
+contains
+
+  subroutine z_invt_solver_default(sv)
+
+    !use psb_base_mod
+
+    Implicit None
+
+    ! Arguments
+    class(amg_z_invt_solver_type), intent(inout) :: sv
+
+    sv%fill_in    = 0
+    sv%inv_fill   = 0
+    sv%thresh     = dzero
+    sv%inv_thresh = dzero
+
+    return
+  end subroutine z_invt_solver_default
+
+end module amg_z_invt_solver

amgprec/impl/solver/Makefile

@@ -244,7 +244,63 @@ amg_z_base_ainv_solver_apply.o \
 amg_z_base_ainv_solver_cnv.o \
 amg_z_base_ainv_solver_dmp.o \
 amg_z_base_ainv_solver_free.o \
-amg_z_base_ainv_update_a.o
+amg_z_base_ainv_update_a.o \
+amg_d_invt_solver_bld.o \
+amg_d_invt_solver_check.o \
+amg_d_invt_solver_clone.o \
+amg_d_invt_solver_cseti.o \
+amg_d_invt_solver_csetr.o \
+amg_d_invt_solver_descr.o \
+amg_d_invt_solver_seti.o \
+amg_d_invt_solver_setr.o \
+amg_d_invk_solver_bld.o \
+amg_d_invk_solver_check.o \
+amg_d_invk_solver_clone.o \
+amg_d_invk_solver_cseti.o \
+amg_d_invk_solver_descr.o \
+amg_d_invk_solver_seti.o \
+amg_s_invt_solver_bld.o \
+amg_s_invt_solver_check.o \
+amg_s_invt_solver_clone.o \
+amg_s_invt_solver_cseti.o \
+amg_s_invt_solver_csetr.o \
+amg_s_invt_solver_descr.o \
+amg_s_invt_solver_seti.o \
+amg_s_invt_solver_setr.o \
+amg_s_invk_solver_bld.o \
+amg_s_invk_solver_check.o \
+amg_s_invk_solver_clone.o \
+amg_s_invk_solver_cseti.o \
+amg_s_invk_solver_descr.o \
+amg_s_invk_solver_seti.o \
+amg_c_invt_solver_bld.o \
+amg_c_invt_solver_check.o \
+amg_c_invt_solver_clone.o \
+amg_c_invt_solver_cseti.o \
+amg_c_invt_solver_csetr.o \
+amg_c_invt_solver_descr.o \
+amg_c_invt_solver_seti.o \
+amg_c_invt_solver_setr.o \
+amg_c_invk_solver_bld.o \
+amg_c_invk_solver_check.o \
+amg_c_invk_solver_clone.o \
+amg_c_invk_solver_cseti.o \
+amg_c_invk_solver_descr.o \
+amg_c_invk_solver_seti.o \
+amg_z_invt_solver_bld.o \
+amg_z_invt_solver_check.o \
+amg_z_invt_solver_clone.o \
+amg_z_invt_solver_cseti.o \
+amg_z_invt_solver_csetr.o \
+amg_z_invt_solver_descr.o \
+amg_z_invt_solver_seti.o \
+amg_z_invt_solver_setr.o \
+amg_z_invk_solver_bld.o \
+amg_z_invk_solver_check.o \
+amg_z_invk_solver_clone.o \
+amg_z_invk_solver_cseti.o \
+amg_z_invk_solver_descr.o \
+amg_z_invk_solver_seti.o
 
 LIBNAME=libamg_prec.a
 

amgprec/impl/solver/amg_c_invk_solver_bld.f90

@@ -32,20 +32,20 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+subroutine amg_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 
   use psb_base_mod
   use psb_c_invk_fact_mod ! This module contains the construction routines
 
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_bld
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_bld
 
   Implicit None
 
   ! Arguments
   type(psb_cspmat_type), intent(in), target            :: a
   Type(psb_desc_type), Intent(inout)                  :: desc_a
-  class(amx_c_invk_solver_type), intent(inout)        :: sv
+  class(amg_c_invk_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
@@ -90,4 +90,4 @@ subroutine amx_c_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_bld
+end subroutine amg_c_invk_solver_bld

amgprec/impl/solver/amg_c_invk_solver_check.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_check(sv,info)
+subroutine amg_c_invk_solver_check(sv,info)
 
 
   use psb_base_mod
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_check
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_check
 
   Implicit None
 
   ! Arguments
-  class(amx_c_invk_solver_type), intent(inout) :: sv
+  class(amg_c_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(out)               :: info
   Integer(Psb_Ipk_) :: err_act
   character(len=20) :: name='c_invk_solver_check'
@@ -61,4 +61,4 @@ subroutine amx_c_invk_solver_check(sv,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_check
+end subroutine amg_c_invk_solver_check

amgprec/impl/solver/amg_c_invk_solver_clone.f90

@@ -36,16 +36,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_clone(sv,svout,info)
+subroutine amg_c_invk_solver_clone(sv,svout,info)
 
   use psb_base_mod
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_clone
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_clone
 
   Implicit None
 
   ! Arguments
-  class(amx_c_invk_solver_type), intent(inout)              :: sv
+  class(amg_c_invk_solver_type), intent(inout)              :: sv
-  class(amx_c_base_solver_type), allocatable, intent(inout) :: svout
+  class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
   integer(psb_ipk_), intent(out)                            :: info
   ! Local variables
   integer(psb_ipk_) :: err_act
@@ -59,13 +59,13 @@ subroutine amx_c_invk_solver_clone(sv,svout,info)
     if (info == psb_success_) deallocate(svout, stat=info)
   end if
   if (info == psb_success_) &
-       & allocate(amx_c_invk_solver_type :: svout, stat=info)
+       & allocate(amg_c_invk_solver_type :: svout, stat=info)
   if (info /= 0) then
     info = psb_err_alloc_dealloc_
     goto 9999
   end if
   select type(svo => svout)
-  type is (amx_c_invk_solver_type)
+  type is (amg_c_invk_solver_type)
     svo%fill_in  = sv%fill_in
     svo%inv_fill = sv%inv_fill
     call psb_safe_ab_cpy(sv%d,svo%d,info)
@@ -87,4 +87,4 @@ subroutine amx_c_invk_solver_clone(sv,svout,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_clone
+end subroutine amg_c_invk_solver_clone

amgprec/impl/solver/amg_c_invk_solver_cseti.f90

@@ -32,15 +32,15 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_cseti(sv,what,val,info,idx)
+subroutine amg_c_invk_solver_cseti(sv,what,val,info,idx)
 
   use psb_base_mod
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_cseti
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_cseti
 
   Implicit None
 
   ! Arguments
-  class(amx_c_invk_solver_type), intent(inout) :: sv
+  class(amg_c_invk_solver_type), intent(inout) :: sv
   character(len=*), intent(in)                 :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_c_invk_solver_cseti(sv,what,val,info,idx)
   case('INV_FILLIN')
     sv%inv_fill  = val
   case default
-    call sv%amx_c_base_solver_type%set(what,val,info)
+    call sv%amg_c_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_c_invk_solver_cseti(sv,what,val,info,idx)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_cseti
+end subroutine amg_c_invk_solver_cseti

amgprec/impl/solver/amg_c_invk_solver_descr.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_descr(sv,info,iout,coarse)
+subroutine amg_c_invk_solver_descr(sv,info,iout,coarse)
 
 
   use psb_base_mod
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_descr
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_descr
 
   Implicit None
 
   ! Arguments
-  class(amx_c_invk_solver_type), intent(in) :: sv
+  class(amg_c_invk_solver_type), intent(in) :: sv
   integer(psb_ipk_), intent(out)            :: info
   integer(psb_ipk_), intent(in), optional   :: iout
   logical, intent(in), optional             :: coarse
@@ -50,7 +50,7 @@ subroutine amx_c_invk_solver_descr(sv,info,iout,coarse)
   integer(psb_ipk_)  :: err_act
   integer(psb_ipk_)  :: me, np
   type(psb_ctxt_type) :: ctxt
-  character(len=20), parameter :: name='amx_c_invk_solver_descr'
+  character(len=20), parameter :: name='amg_c_invk_solver_descr'
   integer(psb_ipk_) :: iout_
 
   call psb_erractionsave(err_act)
@@ -70,4 +70,4 @@ subroutine amx_c_invk_solver_descr(sv,info,iout,coarse)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_descr
+end subroutine amg_c_invk_solver_descr

amgprec/impl/solver/amg_c_invk_solver_seti.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_c_invk_solver_seti(sv,what,val,info)
+subroutine amg_c_invk_solver_seti(sv,what,val,info)
 
 
   use psb_base_mod
-  use amx_c_invk_solver, amg_protect_name => amx_c_invk_solver_seti
+  use amg_c_invk_solver, amg_protect_name => amg_c_invk_solver_seti
 
   Implicit None
 
   ! Arguments
-  class(amx_c_invk_solver_type), intent(inout) :: sv
+  class(amg_c_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(in)                :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_c_invk_solver_seti(sv,what,val,info)
   case(amg_inv_fillin_)
     sv%inv_fill  = val
   case default
-    call sv%amx_c_base_solver_type%set(what,val,info)
+    ! call sv%amg_c_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_c_invk_solver_seti(sv,what,val,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_c_invk_solver_seti
+end subroutine amg_c_invk_solver_seti

amgprec/impl/solver/amg_c_invt_solver_bld.f90

@@ -0,0 +1,97 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+
+  use psb_base_mod
+  use psb_c_invt_fact_mod ! This module contains the construction routines
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  type(psb_cspmat_type), intent(in), target           :: a
+  Type(psb_desc_type), Intent(inout)                  :: desc_a
+  class(amg_c_invt_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(:)
+  integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
+  type(psb_ctxt_type) :: ctxt
+  character(len=20) :: name='amg_c_invt_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'
+
+
+  call psb_invt_bld(a,sv%fill_in,sv%inv_fill,&
+       & sv%thresh,sv%inv_thresh,&
+       & sv%w,sv%d,sv%z,desc_a,info,b)
+
+  if ((info == psb_success_) .and.present(amold)) then
+    call sv%w%cscnv(info,mold=amold)
+    if (info == psb_success_) &
+         & call sv%z%cscnv(info,mold=amold)
+  end if
+
+  if (info == psb_success_) then
+    call sv%dv%bld(sv%d,mold=vmold)
+  end if
+
+  if (info /= psb_success_) then
+    call psb_errpush(psb_err_internal_error_,name)
+    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_invt_solver_bld

amgprec/impl/solver/amg_c_invt_solver_check.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_check(sv,info)
+
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_check
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_)  :: err_act
+  character(len=20) :: name='amg_c_invt_solver_check'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  call amg_check_def(sv%fill_in,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%inv_fill,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%thresh,&
+       & 'Eps',szero,is_legal_s_fact_thrs)
+  call amg_check_def(sv%inv_thresh,&
+       & 'Eps',szero,is_legal_s_fact_thrs)
+
+  if (info /= psb_success_) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_check

amgprec/impl/solver/amg_c_invt_solver_clone.f90

@@ -0,0 +1,92 @@
+!  
+!
+!                             AMG4PSBLAS version 1.0
+!    MultiLevel Domain Decomposition Parallel Preconditioners Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.0)
+!
+!    (C) Copyright 2008,2009,2010,2010,2012
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!                        Alfredo Buttari      CNRS-IRIT, Toulouse
+!                        Pasqua D'Ambra       ICAR-CNR, Naples
+!                        Daniela di Serafino  Second University of Naples
+!
+!    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_invt_solver_clone(sv,svout,info)
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_clone
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_solver_type), intent(inout)              :: sv
+  class(amg_c_base_solver_type), allocatable, intent(inout) :: svout
+  integer(psb_ipk_), intent(out)                            :: info
+  ! 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(amg_c_invt_solver_type :: svout, stat=info)
+  if (info /= 0) then
+    info = psb_err_alloc_dealloc_
+    goto 9999
+  end if
+  select type(svo => svout)
+  type is (amg_c_invt_solver_type)
+    svo%fill_in    = sv%fill_in
+    svo%inv_fill   = sv%inv_fill
+    svo%thresh     = sv%thresh
+    svo%inv_thresh = sv%inv_thresh
+    call psb_safe_ab_cpy(sv%d,svo%d,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    if (info == psb_success_) &
+         & call sv%w%clone(svo%w,info)
+    if (info == psb_success_) &
+         & call sv%z%clone(svo%z,info)
+
+  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_invt_solver_clone

amgprec/impl/solver/amg_c_invt_solver_cseti.f90

@@ -0,0 +1,69 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_cseti(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_cseti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_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='amg_c_invt_solver_cseti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(psb_toupper(what))
+  case('SUB_FILLIN')
+    sv%fill_in   = val
+  case('INV_FILLIN')
+    sv%inv_fill  = val
+  case default
+    call sv%amg_c_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_cseti

amgprec/impl/solver/amg_c_invt_solver_csetr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_csetr(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_csetr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_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='amg_c_invt_solver_csetr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(psb_toupper(what))
+  case('SUB_ILUTHRS')
+    sv%thresh = val
+  case('INV_THRESH')
+    sv%inv_thresh = val
+  case default
+    call sv%amg_c_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_csetr

amgprec/impl/solver/amg_c_invt_solver_descr.f90

@@ -0,0 +1,74 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_descr(sv,info,iout,coarse)
+
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_descr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_solver_type), intent(in) :: sv
+  integer(psb_ipk_), intent(out)            :: info
+  integer(psb_ipk_), intent(in), optional   :: iout
+  logical, intent(in), optional             :: coarse
+
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+  integer(psb_ipk_) :: ictxt, me, np
+  character(len=20), parameter :: name='amg_c_invt_solver_descr'
+  integer(psb_ipk_) :: iout_
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+  if (present(iout)) then
+    iout_ = iout
+  else
+    iout_ = 6
+  endif
+
+  write(iout_,*) '  INVT Approximate Inverse with ILU(T,P) '
+  write(iout_,*) '  Fill level             :',sv%fill_in
+  write(iout_,*) '  Fill threshold         :',sv%thresh
+  write(iout_,*) '  Inverse fill level     :',sv%inv_fill
+  write(iout_,*) '  Inverse fill threshold :',sv%inv_thresh
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_descr

amgprec/impl/solver/amg_c_invt_solver_seti.f90

@@ -0,0 +1,70 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_seti(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_seti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  integer(psb_ipk_), intent(in)                :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_c_invt_solver_seti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(what)
+  case(amg_sub_fillin_)
+    sv%fill_in   = val
+  case(amg_inv_fillin_)
+    sv%inv_fill  = val
+  case default
+!!$      write(0,*) name,': Error: invalid WHAT'
+!!$      info = -2
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_seti

amgprec/impl/solver/amg_c_invt_solver_setr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_setr(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_c_invt_solver, amg_protect_name => amg_c_invt_solver_setr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_c_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  real(psb_spk_), intent(in)                   :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_c_invt_solver_setr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(what)
+  case(amg_sub_iluthrs_)
+    sv%thresh = val
+  case(amg_inv_thresh_)
+    sv%inv_thresh = val
+  case default
+    ! call sv%amg_c_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_c_invt_solver_setr

amgprec/impl/solver/amg_d_invk_solver_bld.f90

@@ -32,20 +32,20 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+subroutine amg_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 
   use psb_base_mod
   use psb_d_invk_fact_mod ! This module contains the construction routines
 
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_bld
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_bld
 
   Implicit None
 
   ! Arguments
   type(psb_dspmat_type), intent(in), target            :: a
   Type(psb_desc_type), Intent(inout)                  :: desc_a
-  class(amx_d_invk_solver_type), intent(inout)        :: sv
+  class(amg_d_invk_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
@@ -90,4 +90,4 @@ subroutine amx_d_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_bld
+end subroutine amg_d_invk_solver_bld

amgprec/impl/solver/amg_d_invk_solver_check.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_check(sv,info)
+subroutine amg_d_invk_solver_check(sv,info)
 
 
   use psb_base_mod
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_check
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_check
 
   Implicit None
 
   ! Arguments
-  class(amx_d_invk_solver_type), intent(inout) :: sv
+  class(amg_d_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(out)               :: info
   Integer(Psb_Ipk_) :: err_act
   character(len=20) :: name='d_invk_solver_check'
@@ -61,4 +61,4 @@ subroutine amx_d_invk_solver_check(sv,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_check
+end subroutine amg_d_invk_solver_check

amgprec/impl/solver/amg_d_invk_solver_clone.f90

@@ -36,16 +36,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_clone(sv,svout,info)
+subroutine amg_d_invk_solver_clone(sv,svout,info)
 
   use psb_base_mod
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_clone
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_clone
 
   Implicit None
 
   ! Arguments
-  class(amx_d_invk_solver_type), intent(inout)              :: sv
+  class(amg_d_invk_solver_type), intent(inout)              :: sv
-  class(amx_d_base_solver_type), allocatable, intent(inout) :: svout
+  class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
   integer(psb_ipk_), intent(out)                            :: info
   ! Local variables
   integer(psb_ipk_) :: err_act
@@ -59,13 +59,13 @@ subroutine amx_d_invk_solver_clone(sv,svout,info)
     if (info == psb_success_) deallocate(svout, stat=info)
   end if
   if (info == psb_success_) &
-       & allocate(amx_d_invk_solver_type :: svout, stat=info)
+       & allocate(amg_d_invk_solver_type :: svout, stat=info)
   if (info /= 0) then
     info = psb_err_alloc_dealloc_
     goto 9999
   end if
   select type(svo => svout)
-  type is (amx_d_invk_solver_type)
+  type is (amg_d_invk_solver_type)
     svo%fill_in  = sv%fill_in
     svo%inv_fill = sv%inv_fill
     call psb_safe_ab_cpy(sv%d,svo%d,info)
@@ -87,4 +87,4 @@ subroutine amx_d_invk_solver_clone(sv,svout,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_clone
+end subroutine amg_d_invk_solver_clone

amgprec/impl/solver/amg_d_invk_solver_cseti.f90

@@ -32,15 +32,15 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_cseti(sv,what,val,info,idx)
+subroutine amg_d_invk_solver_cseti(sv,what,val,info,idx)
 
   use psb_base_mod
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_cseti
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_cseti
 
   Implicit None
 
   ! Arguments
-  class(amx_d_invk_solver_type), intent(inout) :: sv
+  class(amg_d_invk_solver_type), intent(inout) :: sv
   character(len=*), intent(in)                 :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_d_invk_solver_cseti(sv,what,val,info,idx)
   case('INV_FILLIN')
     sv%inv_fill  = val
   case default
-    call sv%amx_d_base_solver_type%set(what,val,info)
+    call sv%amg_d_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_d_invk_solver_cseti(sv,what,val,info,idx)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_cseti
+end subroutine amg_d_invk_solver_cseti

amgprec/impl/solver/amg_d_invk_solver_descr.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_descr(sv,info,iout,coarse)
+subroutine amg_d_invk_solver_descr(sv,info,iout,coarse)
 
 
   use psb_base_mod
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_descr
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_descr
 
   Implicit None
 
   ! Arguments
-  class(amx_d_invk_solver_type), intent(in) :: sv
+  class(amg_d_invk_solver_type), intent(in) :: sv
   integer(psb_ipk_), intent(out)            :: info
   integer(psb_ipk_), intent(in), optional   :: iout
   logical, intent(in), optional             :: coarse
@@ -50,7 +50,7 @@ subroutine amx_d_invk_solver_descr(sv,info,iout,coarse)
   integer(psb_ipk_)  :: err_act
   integer(psb_ipk_)  :: me, np
   type(psb_ctxt_type) :: ctxt
-  character(len=20), parameter :: name='amx_d_invk_solver_descr'
+  character(len=20), parameter :: name='amg_d_invk_solver_descr'
   integer(psb_ipk_) :: iout_
 
   call psb_erractionsave(err_act)
@@ -70,4 +70,4 @@ subroutine amx_d_invk_solver_descr(sv,info,iout,coarse)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_descr
+end subroutine amg_d_invk_solver_descr

amgprec/impl/solver/amg_d_invk_solver_seti.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_d_invk_solver_seti(sv,what,val,info)
+subroutine amg_d_invk_solver_seti(sv,what,val,info)
 
 
   use psb_base_mod
-  use amx_d_invk_solver, amg_protect_name => amx_d_invk_solver_seti
+  use amg_d_invk_solver, amg_protect_name => amg_d_invk_solver_seti
 
   Implicit None
 
   ! Arguments
-  class(amx_d_invk_solver_type), intent(inout) :: sv
+  class(amg_d_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(in)                :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_d_invk_solver_seti(sv,what,val,info)
   case(amg_inv_fillin_)
     sv%inv_fill  = val
   case default
-    call sv%amx_d_base_solver_type%set(what,val,info)
+    ! call sv%amg_d_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_d_invk_solver_seti(sv,what,val,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_d_invk_solver_seti
+end subroutine amg_d_invk_solver_seti

amgprec/impl/solver/amg_d_invt_solver_bld.f90

@@ -0,0 +1,97 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+
+  use psb_base_mod
+  use psb_d_invt_fact_mod ! This module contains the construction routines
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  type(psb_dspmat_type), intent(in), target           :: a
+  Type(psb_desc_type), Intent(inout)                  :: desc_a
+  class(amg_d_invt_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(:)
+  integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
+  type(psb_ctxt_type) :: ctxt
+  character(len=20) :: name='amg_d_invt_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'
+
+
+  call psb_invt_bld(a,sv%fill_in,sv%inv_fill,&
+       & sv%thresh,sv%inv_thresh,&
+       & sv%w,sv%d,sv%z,desc_a,info,b)
+
+  if ((info == psb_success_) .and.present(amold)) then
+    call sv%w%cscnv(info,mold=amold)
+    if (info == psb_success_) &
+         & call sv%z%cscnv(info,mold=amold)
+  end if
+
+  if (info == psb_success_) then
+    call sv%dv%bld(sv%d,mold=vmold)
+  end if
+
+  if (info /= psb_success_) then
+    call psb_errpush(psb_err_internal_error_,name)
+    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_invt_solver_bld

amgprec/impl/solver/amg_d_invt_solver_check.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_check(sv,info)
+
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_check
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_)  :: err_act
+  character(len=20) :: name='amg_d_invt_solver_check'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  call amg_check_def(sv%fill_in,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%inv_fill,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%thresh,&
+       & 'Eps',dzero,is_legal_d_fact_thrs)
+  call amg_check_def(sv%inv_thresh,&
+       & 'Eps',dzero,is_legal_d_fact_thrs)
+
+  if (info /= psb_success_) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_check

amgprec/impl/solver/amg_d_invt_solver_clone.f90

@@ -0,0 +1,92 @@
+!  
+!
+!                             AMG4PSBLAS version 1.0
+!    MultiLevel Domain Decomposition Parallel Preconditioners Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.0)
+!
+!    (C) Copyright 2008,2009,2010,2010,2012
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!                        Alfredo Buttari      CNRS-IRIT, Toulouse
+!                        Pasqua D'Ambra       ICAR-CNR, Naples
+!                        Daniela di Serafino  Second University of Naples
+!
+!    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_invt_solver_clone(sv,svout,info)
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_clone
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_solver_type), intent(inout)              :: sv
+  class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
+  integer(psb_ipk_), intent(out)                            :: info
+  ! 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(amg_d_invt_solver_type :: svout, stat=info)
+  if (info /= 0) then
+    info = psb_err_alloc_dealloc_
+    goto 9999
+  end if
+  select type(svo => svout)
+  type is (amg_d_invt_solver_type)
+    svo%fill_in    = sv%fill_in
+    svo%inv_fill   = sv%inv_fill
+    svo%thresh     = sv%thresh
+    svo%inv_thresh = sv%inv_thresh
+    call psb_safe_ab_cpy(sv%d,svo%d,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    if (info == psb_success_) &
+         & call sv%w%clone(svo%w,info)
+    if (info == psb_success_) &
+         & call sv%z%clone(svo%z,info)
+
+  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_invt_solver_clone

amgprec/impl/solver/amg_d_invt_solver_cseti.f90

@@ -0,0 +1,69 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_cseti(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_cseti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_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='amg_d_invt_solver_cseti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(psb_toupper(what))
+  case('SUB_FILLIN')
+    sv%fill_in   = val
+  case('INV_FILLIN')
+    sv%inv_fill  = val
+  case default
+    call sv%amg_d_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_cseti

amgprec/impl/solver/amg_d_invt_solver_csetr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_csetr(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_csetr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_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='amg_d_invt_solver_csetr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(psb_toupper(what))
+  case('SUB_ILUTHRS')
+    sv%thresh = val
+  case('INV_THRESH')
+    sv%inv_thresh = val
+  case default
+    call sv%amg_d_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_csetr

amgprec/impl/solver/amg_d_invt_solver_descr.f90

@@ -0,0 +1,74 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_descr(sv,info,iout,coarse)
+
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_descr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_solver_type), intent(in) :: sv
+  integer(psb_ipk_), intent(out)            :: info
+  integer(psb_ipk_), intent(in), optional   :: iout
+  logical, intent(in), optional             :: coarse
+
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+  integer(psb_ipk_) :: ictxt, me, np
+  character(len=20), parameter :: name='amg_d_invt_solver_descr'
+  integer(psb_ipk_) :: iout_
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+  if (present(iout)) then
+    iout_ = iout
+  else
+    iout_ = 6
+  endif
+
+  write(iout_,*) '  INVT Approximate Inverse with ILU(T,P) '
+  write(iout_,*) '  Fill level             :',sv%fill_in
+  write(iout_,*) '  Fill threshold         :',sv%thresh
+  write(iout_,*) '  Inverse fill level     :',sv%inv_fill
+  write(iout_,*) '  Inverse fill threshold :',sv%inv_thresh
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_descr

amgprec/impl/solver/amg_d_invt_solver_seti.f90

@@ -0,0 +1,70 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_seti(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_seti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  integer(psb_ipk_), intent(in)                :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_d_invt_solver_seti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(what)
+  case(amg_sub_fillin_)
+    sv%fill_in   = val
+  case(amg_inv_fillin_)
+    sv%inv_fill  = val
+  case default
+!!$      write(0,*) name,': Error: invalid WHAT'
+!!$      info = -2
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_seti

amgprec/impl/solver/amg_d_invt_solver_setr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_setr(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_d_invt_solver, amg_protect_name => amg_d_invt_solver_setr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_d_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  real(psb_dpk_), intent(in)                   :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_d_invt_solver_setr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(what)
+  case(amg_sub_iluthrs_)
+    sv%thresh = val
+  case(amg_inv_thresh_)
+    sv%inv_thresh = val
+  case default
+    ! call sv%amg_d_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_d_invt_solver_setr

amgprec/impl/solver/amg_s_invk_solver_bld.f90

@@ -32,20 +32,20 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+subroutine amg_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 
   use psb_base_mod
   use psb_s_invk_fact_mod ! This module contains the construction routines
 
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_bld
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_bld
 
   Implicit None
 
   ! Arguments
   type(psb_sspmat_type), intent(in), target            :: a
   Type(psb_desc_type), Intent(inout)                  :: desc_a
-  class(amx_s_invk_solver_type), intent(inout)        :: sv
+  class(amg_s_invk_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
@@ -90,4 +90,4 @@ subroutine amx_s_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_bld
+end subroutine amg_s_invk_solver_bld

amgprec/impl/solver/amg_s_invk_solver_check.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_check(sv,info)
+subroutine amg_s_invk_solver_check(sv,info)
 
 
   use psb_base_mod
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_check
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_check
 
   Implicit None
 
   ! Arguments
-  class(amx_s_invk_solver_type), intent(inout) :: sv
+  class(amg_s_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(out)               :: info
   Integer(Psb_Ipk_) :: err_act
   character(len=20) :: name='s_invk_solver_check'
@@ -61,4 +61,4 @@ subroutine amx_s_invk_solver_check(sv,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_check
+end subroutine amg_s_invk_solver_check

amgprec/impl/solver/amg_s_invk_solver_clone.f90

@@ -36,16 +36,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_clone(sv,svout,info)
+subroutine amg_s_invk_solver_clone(sv,svout,info)
 
   use psb_base_mod
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_clone
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_clone
 
   Implicit None
 
   ! Arguments
-  class(amx_s_invk_solver_type), intent(inout)              :: sv
+  class(amg_s_invk_solver_type), intent(inout)              :: sv
-  class(amx_s_base_solver_type), allocatable, intent(inout) :: svout
+  class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
   integer(psb_ipk_), intent(out)                            :: info
   ! Local variables
   integer(psb_ipk_) :: err_act
@@ -59,13 +59,13 @@ subroutine amx_s_invk_solver_clone(sv,svout,info)
     if (info == psb_success_) deallocate(svout, stat=info)
   end if
   if (info == psb_success_) &
-       & allocate(amx_s_invk_solver_type :: svout, stat=info)
+       & allocate(amg_s_invk_solver_type :: svout, stat=info)
   if (info /= 0) then
     info = psb_err_alloc_dealloc_
     goto 9999
   end if
   select type(svo => svout)
-  type is (amx_s_invk_solver_type)
+  type is (amg_s_invk_solver_type)
     svo%fill_in  = sv%fill_in
     svo%inv_fill = sv%inv_fill
     call psb_safe_ab_cpy(sv%d,svo%d,info)
@@ -87,4 +87,4 @@ subroutine amx_s_invk_solver_clone(sv,svout,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_clone
+end subroutine amg_s_invk_solver_clone

amgprec/impl/solver/amg_s_invk_solver_cseti.f90

@@ -32,15 +32,15 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_cseti(sv,what,val,info,idx)
+subroutine amg_s_invk_solver_cseti(sv,what,val,info,idx)
 
   use psb_base_mod
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_cseti
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_cseti
 
   Implicit None
 
   ! Arguments
-  class(amx_s_invk_solver_type), intent(inout) :: sv
+  class(amg_s_invk_solver_type), intent(inout) :: sv
   character(len=*), intent(in)                 :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_s_invk_solver_cseti(sv,what,val,info,idx)
   case('INV_FILLIN')
     sv%inv_fill  = val
   case default
-    call sv%amx_s_base_solver_type%set(what,val,info)
+    call sv%amg_s_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_s_invk_solver_cseti(sv,what,val,info,idx)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_cseti
+end subroutine amg_s_invk_solver_cseti

amgprec/impl/solver/amg_s_invk_solver_descr.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_descr(sv,info,iout,coarse)
+subroutine amg_s_invk_solver_descr(sv,info,iout,coarse)
 
 
   use psb_base_mod
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_descr
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_descr
 
   Implicit None
 
   ! Arguments
-  class(amx_s_invk_solver_type), intent(in) :: sv
+  class(amg_s_invk_solver_type), intent(in) :: sv
   integer(psb_ipk_), intent(out)            :: info
   integer(psb_ipk_), intent(in), optional   :: iout
   logical, intent(in), optional             :: coarse
@@ -50,7 +50,7 @@ subroutine amx_s_invk_solver_descr(sv,info,iout,coarse)
   integer(psb_ipk_)  :: err_act
   integer(psb_ipk_)  :: me, np
   type(psb_ctxt_type) :: ctxt
-  character(len=20), parameter :: name='amx_s_invk_solver_descr'
+  character(len=20), parameter :: name='amg_s_invk_solver_descr'
   integer(psb_ipk_) :: iout_
 
   call psb_erractionsave(err_act)
@@ -70,4 +70,4 @@ subroutine amx_s_invk_solver_descr(sv,info,iout,coarse)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_descr
+end subroutine amg_s_invk_solver_descr

amgprec/impl/solver/amg_s_invk_solver_seti.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_s_invk_solver_seti(sv,what,val,info)
+subroutine amg_s_invk_solver_seti(sv,what,val,info)
 
 
   use psb_base_mod
-  use amx_s_invk_solver, amg_protect_name => amx_s_invk_solver_seti
+  use amg_s_invk_solver, amg_protect_name => amg_s_invk_solver_seti
 
   Implicit None
 
   ! Arguments
-  class(amx_s_invk_solver_type), intent(inout) :: sv
+  class(amg_s_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(in)                :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_s_invk_solver_seti(sv,what,val,info)
   case(amg_inv_fillin_)
     sv%inv_fill  = val
   case default
-    call sv%amx_s_base_solver_type%set(what,val,info)
+    ! call sv%amg_s_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_s_invk_solver_seti(sv,what,val,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_s_invk_solver_seti
+end subroutine amg_s_invk_solver_seti

amgprec/impl/solver/amg_s_invt_solver_bld.f90

@@ -0,0 +1,97 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+
+  use psb_base_mod
+  use psb_s_invt_fact_mod ! This module contains the construction routines
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  type(psb_sspmat_type), intent(in), target           :: a
+  Type(psb_desc_type), Intent(inout)                  :: desc_a
+  class(amg_s_invt_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(:)
+  integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
+  type(psb_ctxt_type) :: ctxt
+  character(len=20) :: name='amg_s_invt_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'
+
+
+  call psb_invt_bld(a,sv%fill_in,sv%inv_fill,&
+       & sv%thresh,sv%inv_thresh,&
+       & sv%w,sv%d,sv%z,desc_a,info,b)
+
+  if ((info == psb_success_) .and.present(amold)) then
+    call sv%w%cscnv(info,mold=amold)
+    if (info == psb_success_) &
+         & call sv%z%cscnv(info,mold=amold)
+  end if
+
+  if (info == psb_success_) then
+    call sv%dv%bld(sv%d,mold=vmold)
+  end if
+
+  if (info /= psb_success_) then
+    call psb_errpush(psb_err_internal_error_,name)
+    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_invt_solver_bld

amgprec/impl/solver/amg_s_invt_solver_check.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_check(sv,info)
+
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_check
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_)  :: err_act
+  character(len=20) :: name='amg_s_invt_solver_check'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  call amg_check_def(sv%fill_in,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%inv_fill,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%thresh,&
+       & 'Eps',szero,is_legal_s_fact_thrs)
+  call amg_check_def(sv%inv_thresh,&
+       & 'Eps',szero,is_legal_s_fact_thrs)
+
+  if (info /= psb_success_) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_check

amgprec/impl/solver/amg_s_invt_solver_clone.f90

@@ -0,0 +1,92 @@
+!  
+!
+!                             AMG4PSBLAS version 1.0
+!    MultiLevel Domain Decomposition Parallel Preconditioners Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.0)
+!
+!    (C) Copyright 2008,2009,2010,2010,2012
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!                        Alfredo Buttari      CNRS-IRIT, Toulouse
+!                        Pasqua D'Ambra       ICAR-CNR, Naples
+!                        Daniela di Serafino  Second University of Naples
+!
+!    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_invt_solver_clone(sv,svout,info)
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_clone
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_solver_type), intent(inout)              :: sv
+  class(amg_s_base_solver_type), allocatable, intent(inout) :: svout
+  integer(psb_ipk_), intent(out)                            :: info
+  ! 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(amg_s_invt_solver_type :: svout, stat=info)
+  if (info /= 0) then
+    info = psb_err_alloc_dealloc_
+    goto 9999
+  end if
+  select type(svo => svout)
+  type is (amg_s_invt_solver_type)
+    svo%fill_in    = sv%fill_in
+    svo%inv_fill   = sv%inv_fill
+    svo%thresh     = sv%thresh
+    svo%inv_thresh = sv%inv_thresh
+    call psb_safe_ab_cpy(sv%d,svo%d,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    if (info == psb_success_) &
+         & call sv%w%clone(svo%w,info)
+    if (info == psb_success_) &
+         & call sv%z%clone(svo%z,info)
+
+  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_invt_solver_clone

amgprec/impl/solver/amg_s_invt_solver_cseti.f90

@@ -0,0 +1,69 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_cseti(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_cseti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_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='amg_s_invt_solver_cseti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(psb_toupper(what))
+  case('SUB_FILLIN')
+    sv%fill_in   = val
+  case('INV_FILLIN')
+    sv%inv_fill  = val
+  case default
+    call sv%amg_s_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_cseti

amgprec/impl/solver/amg_s_invt_solver_csetr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_csetr(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_csetr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_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='amg_s_invt_solver_csetr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(psb_toupper(what))
+  case('SUB_ILUTHRS')
+    sv%thresh = val
+  case('INV_THRESH')
+    sv%inv_thresh = val
+  case default
+    call sv%amg_s_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_csetr

amgprec/impl/solver/amg_s_invt_solver_descr.f90

@@ -0,0 +1,74 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_descr(sv,info,iout,coarse)
+
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_descr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_solver_type), intent(in) :: sv
+  integer(psb_ipk_), intent(out)            :: info
+  integer(psb_ipk_), intent(in), optional   :: iout
+  logical, intent(in), optional             :: coarse
+
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+  integer(psb_ipk_) :: ictxt, me, np
+  character(len=20), parameter :: name='amg_s_invt_solver_descr'
+  integer(psb_ipk_) :: iout_
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+  if (present(iout)) then
+    iout_ = iout
+  else
+    iout_ = 6
+  endif
+
+  write(iout_,*) '  INVT Approximate Inverse with ILU(T,P) '
+  write(iout_,*) '  Fill level             :',sv%fill_in
+  write(iout_,*) '  Fill threshold         :',sv%thresh
+  write(iout_,*) '  Inverse fill level     :',sv%inv_fill
+  write(iout_,*) '  Inverse fill threshold :',sv%inv_thresh
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_descr

amgprec/impl/solver/amg_s_invt_solver_seti.f90

@@ -0,0 +1,70 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_seti(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_seti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  integer(psb_ipk_), intent(in)                :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_s_invt_solver_seti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(what)
+  case(amg_sub_fillin_)
+    sv%fill_in   = val
+  case(amg_inv_fillin_)
+    sv%inv_fill  = val
+  case default
+!!$      write(0,*) name,': Error: invalid WHAT'
+!!$      info = -2
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_seti

amgprec/impl/solver/amg_s_invt_solver_setr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_setr(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_s_invt_solver, amg_protect_name => amg_s_invt_solver_setr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_s_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  real(psb_spk_), intent(in)                   :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_s_invt_solver_setr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(what)
+  case(amg_sub_iluthrs_)
+    sv%thresh = val
+  case(amg_inv_thresh_)
+    sv%inv_thresh = val
+  case default
+    ! call sv%amg_s_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_s_invt_solver_setr

amgprec/impl/solver/amg_z_invk_solver_bld.f90

@@ -32,20 +32,20 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+subroutine amg_z_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 
   use psb_base_mod
   use psb_z_invk_fact_mod ! This module contains the construction routines
 
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_bld
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_bld
 
   Implicit None
 
   ! Arguments
   type(psb_zspmat_type), intent(in), target            :: a
   Type(psb_desc_type), Intent(inout)                  :: desc_a
-  class(amx_z_invk_solver_type), intent(inout)        :: sv
+  class(amg_z_invk_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
@@ -90,4 +90,4 @@ subroutine amx_z_invk_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_bld
+end subroutine amg_z_invk_solver_bld

amgprec/impl/solver/amg_z_invk_solver_check.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_check(sv,info)
+subroutine amg_z_invk_solver_check(sv,info)
 
 
   use psb_base_mod
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_check
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_check
 
   Implicit None
 
   ! Arguments
-  class(amx_z_invk_solver_type), intent(inout) :: sv
+  class(amg_z_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(out)               :: info
   Integer(Psb_Ipk_) :: err_act
   character(len=20) :: name='z_invk_solver_check'
@@ -61,4 +61,4 @@ subroutine amx_z_invk_solver_check(sv,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_check
+end subroutine amg_z_invk_solver_check

amgprec/impl/solver/amg_z_invk_solver_clone.f90

@@ -36,16 +36,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_clone(sv,svout,info)
+subroutine amg_z_invk_solver_clone(sv,svout,info)
 
   use psb_base_mod
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_clone
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_clone
 
   Implicit None
 
   ! Arguments
-  class(amx_z_invk_solver_type), intent(inout)              :: sv
+  class(amg_z_invk_solver_type), intent(inout)              :: sv
-  class(amx_z_base_solver_type), allocatable, intent(inout) :: svout
+  class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
   integer(psb_ipk_), intent(out)                            :: info
   ! Local variables
   integer(psb_ipk_) :: err_act
@@ -59,13 +59,13 @@ subroutine amx_z_invk_solver_clone(sv,svout,info)
     if (info == psb_success_) deallocate(svout, stat=info)
   end if
   if (info == psb_success_) &
-       & allocate(amx_z_invk_solver_type :: svout, stat=info)
+       & allocate(amg_z_invk_solver_type :: svout, stat=info)
   if (info /= 0) then
     info = psb_err_alloc_dealloc_
     goto 9999
   end if
   select type(svo => svout)
-  type is (amx_z_invk_solver_type)
+  type is (amg_z_invk_solver_type)
     svo%fill_in  = sv%fill_in
     svo%inv_fill = sv%inv_fill
     call psb_safe_ab_cpy(sv%d,svo%d,info)
@@ -87,4 +87,4 @@ subroutine amx_z_invk_solver_clone(sv,svout,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_clone
+end subroutine amg_z_invk_solver_clone

amgprec/impl/solver/amg_z_invk_solver_cseti.f90

@@ -32,15 +32,15 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_cseti(sv,what,val,info,idx)
+subroutine amg_z_invk_solver_cseti(sv,what,val,info,idx)
 
   use psb_base_mod
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_cseti
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_cseti
 
   Implicit None
 
   ! Arguments
-  class(amx_z_invk_solver_type), intent(inout) :: sv
+  class(amg_z_invk_solver_type), intent(inout) :: sv
   character(len=*), intent(in)                 :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_z_invk_solver_cseti(sv,what,val,info,idx)
   case('INV_FILLIN')
     sv%inv_fill  = val
   case default
-    call sv%amx_z_base_solver_type%set(what,val,info)
+    call sv%amg_z_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_z_invk_solver_cseti(sv,what,val,info,idx)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_cseti
+end subroutine amg_z_invk_solver_cseti

amgprec/impl/solver/amg_z_invk_solver_descr.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_descr(sv,info,iout,coarse)
+subroutine amg_z_invk_solver_descr(sv,info,iout,coarse)
 
 
   use psb_base_mod
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_descr
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_descr
 
   Implicit None
 
   ! Arguments
-  class(amx_z_invk_solver_type), intent(in) :: sv
+  class(amg_z_invk_solver_type), intent(in) :: sv
   integer(psb_ipk_), intent(out)            :: info
   integer(psb_ipk_), intent(in), optional   :: iout
   logical, intent(in), optional             :: coarse
@@ -50,7 +50,7 @@ subroutine amx_z_invk_solver_descr(sv,info,iout,coarse)
   integer(psb_ipk_)  :: err_act
   integer(psb_ipk_)  :: me, np
   type(psb_ctxt_type) :: ctxt
-  character(len=20), parameter :: name='amx_z_invk_solver_descr'
+  character(len=20), parameter :: name='amg_z_invk_solver_descr'
   integer(psb_ipk_) :: iout_
 
   call psb_erractionsave(err_act)
@@ -70,4 +70,4 @@ subroutine amx_z_invk_solver_descr(sv,info,iout,coarse)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_descr
+end subroutine amg_z_invk_solver_descr

amgprec/impl/solver/amg_z_invk_solver_seti.f90

@@ -32,16 +32,16 @@
 !    POSSIBILITY OF SUCH DAMAGE.
 !
 !
-subroutine amx_z_invk_solver_seti(sv,what,val,info)
+subroutine amg_z_invk_solver_seti(sv,what,val,info)
 
 
   use psb_base_mod
-  use amx_z_invk_solver, amg_protect_name => amx_z_invk_solver_seti
+  use amg_z_invk_solver, amg_protect_name => amg_z_invk_solver_seti
 
   Implicit None
 
   ! Arguments
-  class(amx_z_invk_solver_type), intent(inout) :: sv
+  class(amg_z_invk_solver_type), intent(inout) :: sv
   integer(psb_ipk_), intent(in)                :: what
   integer(psb_ipk_), intent(in)                :: val
   integer(psb_ipk_), intent(out)               :: info
@@ -58,7 +58,7 @@ subroutine amx_z_invk_solver_seti(sv,what,val,info)
   case(amg_inv_fillin_)
     sv%inv_fill  = val
   case default
-    call sv%amx_z_base_solver_type%set(what,val,info)
+    ! call sv%amg_z_base_solver_type%set(what,val,info)
   end select
 
   call psb_erractionrestore(err_act)
@@ -66,4 +66,4 @@ subroutine amx_z_invk_solver_seti(sv,what,val,info)
 
 9999 call psb_error_handler(err_act)
   return
-end subroutine amx_z_invk_solver_seti
+end subroutine amg_z_invk_solver_seti

amgprec/impl/solver/amg_z_invt_solver_bld.f90

@@ -0,0 +1,97 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
+
+  use psb_base_mod
+  use psb_z_invt_fact_mod ! This module contains the construction routines
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_bld
+
+  Implicit None
+
+  ! Arguments
+  type(psb_zspmat_type), intent(in), target           :: a
+  Type(psb_desc_type), Intent(inout)                  :: desc_a
+  class(amg_z_invt_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(:)
+  integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
+  type(psb_ctxt_type) :: ctxt
+  character(len=20) :: name='amg_z_invt_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'
+
+
+  call psb_invt_bld(a,sv%fill_in,sv%inv_fill,&
+       & sv%thresh,sv%inv_thresh,&
+       & sv%w,sv%d,sv%z,desc_a,info,b)
+
+  if ((info == psb_success_) .and.present(amold)) then
+    call sv%w%cscnv(info,mold=amold)
+    if (info == psb_success_) &
+         & call sv%z%cscnv(info,mold=amold)
+  end if
+
+  if (info == psb_success_) then
+    call sv%dv%bld(sv%d,mold=vmold)
+  end if
+
+  if (info /= psb_success_) then
+    call psb_errpush(psb_err_internal_error_,name)
+    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_invt_solver_bld

amgprec/impl/solver/amg_z_invt_solver_check.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_check(sv,info)
+
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_check
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_)  :: err_act
+  character(len=20) :: name='amg_z_invt_solver_check'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  call amg_check_def(sv%fill_in,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%inv_fill,&
+       & 'Level',izero,is_int_non_negative)
+  call amg_check_def(sv%thresh,&
+       & 'Eps',dzero,is_legal_d_fact_thrs)
+  call amg_check_def(sv%inv_thresh,&
+       & 'Eps',dzero,is_legal_d_fact_thrs)
+
+  if (info /= psb_success_) goto 9999
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_check

amgprec/impl/solver/amg_z_invt_solver_clone.f90

@@ -0,0 +1,92 @@
+!  
+!
+!                             AMG4PSBLAS version 1.0
+!    MultiLevel Domain Decomposition Parallel Preconditioners Package
+!               based on PSBLAS (Parallel Sparse BLAS version 3.0)
+!
+!    (C) Copyright 2008,2009,2010,2010,2012
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!                        Alfredo Buttari      CNRS-IRIT, Toulouse
+!                        Pasqua D'Ambra       ICAR-CNR, Naples
+!                        Daniela di Serafino  Second University of Naples
+!
+!    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_invt_solver_clone(sv,svout,info)
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_clone
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_solver_type), intent(inout)              :: sv
+  class(amg_z_base_solver_type), allocatable, intent(inout) :: svout
+  integer(psb_ipk_), intent(out)                            :: info
+  ! 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(amg_z_invt_solver_type :: svout, stat=info)
+  if (info /= 0) then
+    info = psb_err_alloc_dealloc_
+    goto 9999
+  end if
+  select type(svo => svout)
+  type is (amg_z_invt_solver_type)
+    svo%fill_in    = sv%fill_in
+    svo%inv_fill   = sv%inv_fill
+    svo%thresh     = sv%thresh
+    svo%inv_thresh = sv%inv_thresh
+    call psb_safe_ab_cpy(sv%d,svo%d,info)
+    if (info == psb_success_) &
+         & call sv%dv%clone(svo%dv,info)
+    if (info == psb_success_) &
+         & call sv%w%clone(svo%w,info)
+    if (info == psb_success_) &
+         & call sv%z%clone(svo%z,info)
+
+  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_invt_solver_clone

amgprec/impl/solver/amg_z_invt_solver_cseti.f90

@@ -0,0 +1,69 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_cseti(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_cseti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_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='amg_z_invt_solver_cseti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(psb_toupper(what))
+  case('SUB_FILLIN')
+    sv%fill_in   = val
+  case('INV_FILLIN')
+    sv%inv_fill  = val
+  case default
+    call sv%amg_z_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_cseti

amgprec/impl/solver/amg_z_invt_solver_csetr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_csetr(sv,what,val,info,idx)
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_csetr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_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='amg_z_invt_solver_csetr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(psb_toupper(what))
+  case('SUB_ILUTHRS')
+    sv%thresh = val
+  case('INV_THRESH')
+    sv%inv_thresh = val
+  case default
+    call sv%amg_z_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_csetr

amgprec/impl/solver/amg_z_invt_solver_descr.f90

@@ -0,0 +1,74 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_descr(sv,info,iout,coarse)
+
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_descr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_solver_type), intent(in) :: sv
+  integer(psb_ipk_), intent(out)            :: info
+  integer(psb_ipk_), intent(in), optional   :: iout
+  logical, intent(in), optional             :: coarse
+
+  ! Local variables
+  integer(psb_ipk_) :: err_act
+  integer(psb_ipk_) :: ictxt, me, np
+  character(len=20), parameter :: name='amg_z_invt_solver_descr'
+  integer(psb_ipk_) :: iout_
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+  if (present(iout)) then
+    iout_ = iout
+  else
+    iout_ = 6
+  endif
+
+  write(iout_,*) '  INVT Approximate Inverse with ILU(T,P) '
+  write(iout_,*) '  Fill level             :',sv%fill_in
+  write(iout_,*) '  Fill threshold         :',sv%thresh
+  write(iout_,*) '  Inverse fill level     :',sv%inv_fill
+  write(iout_,*) '  Inverse fill threshold :',sv%inv_thresh
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_descr

amgprec/impl/solver/amg_z_invt_solver_seti.f90

@@ -0,0 +1,70 @@
+!  
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_seti(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_seti
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  integer(psb_ipk_), intent(in)                :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_z_invt_solver_seti'
+
+  info = psb_success_
+  call psb_erractionsave(err_act)
+
+  select case(what)
+  case(amg_sub_fillin_)
+    sv%fill_in   = val
+  case(amg_inv_fillin_)
+    sv%inv_fill  = val
+  case default
+!!$      write(0,*) name,': Error: invalid WHAT'
+!!$      info = -2
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_seti

amgprec/impl/solver/amg_z_invt_solver_setr.f90

@@ -0,0 +1,69 @@
+!
+!
+!                       AMG-AINV: Approximate Inverse plugin for
+!                             AMG4PSBLAS version 1.0
+!
+!    (C) Copyright 2020
+!
+!                        Salvatore Filippone  University of Rome Tor Vergata
+!
+!    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_invt_solver_setr(sv,what,val,info)
+
+
+  use psb_base_mod
+  use amg_z_invt_solver, amg_protect_name => amg_z_invt_solver_setr
+
+  Implicit None
+
+  ! Arguments
+  class(amg_z_invt_solver_type), intent(inout) :: sv
+  integer(psb_ipk_), intent(in)                :: what
+  real(psb_dpk_), intent(in)                   :: val
+  integer(psb_ipk_), intent(out)               :: info
+  !
+  Integer(Psb_Ipk_) :: err_act
+  character(len=20) :: name='amg_z_invt_solver_setr'
+
+  call psb_erractionsave(err_act)
+  info = psb_success_
+
+  select case(what)
+  case(amg_sub_iluthrs_)
+    sv%thresh = val
+  case(amg_inv_thresh_)
+    sv%inv_thresh = val
+  case default
+    ! call sv%amg_z_base_solver_type%set(what,val,info)
+  end select
+
+  call psb_erractionrestore(err_act)
+  return
+
+9999 call psb_error_handler(err_act)
+  return
+end subroutine amg_z_invt_solver_setr