!
!
! AMG4PSBLAS version 1.0
! Algebraic Multigrid Package
! based on PSBLAS (Parallel Sparse BLAS version 3.7)
!
! (C) Copyright 2021
!
! Salvatore Filippone
! Pasqua D'Ambra
! Fabio Durastante
! Salvatore Filippone
! Pasqua D'Ambra
! Fabio Durastante
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
! moved here from amg4psblas-extension
!
!
! AMG4PSBLAS Extensions
!
! (C) Copyright 2019
!
! Salvatore Filippone Cranfield University
! Pasqua D'Ambra IAC-CNR, Naples, IT
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
! File: amg_z_krm_solver_impl.f90
!
! This is the implementation file corresponding to amg_z_krm_solver_mod.
!
!
subroutine amg_z_krm_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
use psb_base_mod
use amg_z_krm_solver, amg_protect_name => amg_z_krm_solver_bld
Implicit None
! Arguments
type(psb_zspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(inout) :: desc_a
class(amg_z_krm_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
integer(psb_lpk_) :: lnr
integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
type(psb_ctxt_type) :: ctxt, l_ctxt
character(len=20) :: name='@Z@_krm_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 sv%prec%free(info)
if (sv%global) then
call sv%prec%init(ctxt,sv%kprec,info)
if (sv%i_sub_solve>0) then
call sv%prec%set('sub_solve',sv%i_sub_solve,info)
else
call sv%prec%set('sub_solve',sv%sub_solve,info)
end if
call sv%prec%set('sub_fillin',sv%fillin,info)
call sv%prec%hierarchy_build(a,desc_a,info)
call sv%prec%smoothers_build(a,desc_a,info,amold=amold,vmold=vmold)
sv%a => a
else
call psb_init(l_ctxt,np=1_psb_ipk_,basectxt=ctxt,ids=(/me/))
n_row = desc_a%get_local_rows()
lnr = n_row
call psb_cdall(l_ctxt,sv%desc_local,info,mg=lnr,repl=.true.)
call psb_cdasb(sv%desc_local,info)
call sv%prec%init(l_ctxt,sv%kprec,info)
!This is a gigantic kludge, to be revised
if (sv%i_sub_solve>0) then
call sv%prec%set('sub_solve',sv%i_sub_solve,info)
else
call sv%prec%set('sub_solve',sv%sub_solve,info)
end if
call sv%prec%set('sub_fillin',sv%fillin,info)
call a%csclip(sv%a_local,info,jmax=n_row)
call sv%prec%hierarchy_build(sv%a_local,sv%desc_local,info)
call sv%prec%smoothers_build(sv%a_local,sv%desc_local,info,amold=amold,vmold=vmold)
call psb_geall(sv%x_local,sv%desc_local,info)
call sv%x_local%zero()
call psb_geasb(sv%x_local,sv%desc_local,info,mold=vmold)
call psb_geall(sv%z_local,sv%desc_local,info)
call sv%z_local%zero()
call psb_geasb(sv%z_local,sv%desc_local,info,mold=vmold)
end if
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='inner precbld'
call psb_errpush(info,name,a_err=ch_err)
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_krm_solver_bld
subroutine amg_z_krm_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
& trans,work,wv,info,init,initu)
use psb_base_mod
use psb_krylov_mod
use amg_z_krm_solver, amg_protect_name => amg_z_krm_solver_apply_vect
Implicit None
type(psb_desc_type), intent(in) :: desc_data
class(amg_z_krm_solver_type), intent(inout) :: sv
type(psb_z_vect_type),intent(inout) :: x
type(psb_z_vect_type),intent(inout) :: y
complex(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
complex(psb_dpk_),target, intent(inout) :: work(:)
type(psb_z_vect_type),intent(inout) :: wv(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
type(psb_z_vect_type),intent(inout), optional :: initu
type(psb_z_vect_type) :: z
integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
type(psb_ctxt_type) :: ctxt
character(len=20) :: name='@Z@_krm_solver_apply_v', ch_err
info=psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ctxt = desc_data%get_context()
call psb_info(ctxt, me, np)
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' start'
if (sv%global) then
call psb_geall(z,desc_data,info)
call z%zero()
call psb_geasb(z,desc_data,info,mold=x%v)
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' norms ',&
& psb_genrm2(x,desc_data,info),psb_genrm2(y,desc_data,info),&
& psb_genrm2(z,desc_data,info)
call psb_krylov(sv%method,sv%a,sv%prec,x,z,sv%eps,&
& desc_data,info,itmax=sv%itmax,itrace=sv%itrace,&
& istop=sv%istopc,irst=sv%irst)
!!$ call sv%prec%apply(x,z,desc_data,info,trans=trans,work=work)
call psb_geaxpby(alpha,z,beta,y,desc_data,info)
else
call psb_geaxpby(zone,x,zzero,sv%x_local,sv%desc_local,info)
call psb_krylov(sv%method,sv%a_local,sv%prec,sv%x_local,sv%z_local,sv%eps,&
& sv%desc_local,info,itmax=sv%itmax,itrace=sv%itrace,&
& istop=sv%istopc,irst=sv%irst)
call psb_geaxpby(alpha,sv%z_local,beta,y,sv%desc_local,info)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_z_krm_solver_apply_vect
subroutine amg_z_krm_solver_apply(alpha,sv,x,beta,y,desc_data,&
& trans,work,info,init,initu)
use psb_base_mod
use amg_z_krm_solver, amg_protect_name => amg_z_krm_solver_apply
implicit none
type(psb_desc_type), intent(in) :: desc_data
class(amg_z_krm_solver_type), intent(inout) :: sv
complex(psb_dpk_),intent(inout) :: x(:)
complex(psb_dpk_),intent(inout) :: y(:)
complex(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
complex(psb_dpk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
complex(psb_dpk_),intent(inout), optional :: initu(:)
complex(psb_dpk_), allocatable :: z(:)
integer(psb_ipk_) :: np,me,i, err_act, debug_unit, debug_level
type(psb_ctxt_type) :: ctxt
character(len=20) :: name='@Z@_krm_solver_apply', ch_err
info=psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ctxt = desc_data%get_context()
call psb_info(ctxt, me, np)
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' start'
call psb_geasb(z,desc_data,info,scratch=.true.)
call sv%prec%apply(x,z,desc_data,info,trans=trans,work=work)
call psb_geaxpby(alpha,z,beta,y,desc_data,info)
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_z_krm_solver_apply