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psblas3/prec/psb_s_base_prec_mod.f90

405 lines
14 KiB
Fortran

!
! Parallel Sparse BLAS version 3.5
! (C) Copyright 2006-2018
! Salvatore Filippone
! Alfredo Buttari
!
! 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 PSBLAS 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 PSBLAS 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 to define PREC_DATA, !!
!! structure for preconditioning. !!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
module psb_s_base_prec_mod
! Reduces size of .mod file.
use psb_base_mod, only : psb_spk_, psb_ipk_, psb_epk_, psb_ctxt_type, &
& psb_desc_type, psb_sizeof, psb_free, psb_cdfree, psb_errpush, psb_act_abort_,&
& psb_sizeof_ip, psb_sizeof_lp, psb_sizeof_sp, psb_sizeof_dp, &
& psb_erractionsave, psb_erractionrestore, psb_error, &
& psb_errstatus_fatal, psb_success_,&
& psb_s_base_sparse_mat, psb_sspmat_type, psb_s_csr_sparse_mat,&
& psb_s_base_vect_type, psb_s_vect_type, psb_i_base_vect_type
use psb_prec_const_mod
type, abstract :: psb_s_base_prec_type
type(psb_ctxt_type) :: ctxt
contains
procedure, pass(prec) :: set_ctxt => psb_s_base_set_ctxt
procedure, pass(prec) :: get_ctxt => psb_s_base_get_ctxt
procedure, pass(prec) :: get_nzeros => psb_s_base_get_nzeros
procedure, pass(prec) :: precseti => psb_s_base_precseti
procedure, pass(prec) :: precsetr => psb_s_base_precsetr
procedure, pass(prec) :: precsetc => psb_s_base_precsetc
generic, public :: precset => precseti, precsetr, precsetc
procedure(psb_s_base_apply_vect), pass(prec), deferred :: s_apply_v
procedure(psb_s_base_apply), pass(prec), deferred :: s_apply
generic, public :: apply => s_apply, s_apply_v
generic, public :: build => precbld
generic, public :: descr => precdescr
procedure, pass(prec) :: desc_prefix => psb_s_base_desc_prefix
procedure, pass(prec) :: allocate_wrk => psb_s_base_allocate_wrk
procedure, pass(prec) :: free_wrk => psb_s_base_free_wrk
procedure, pass(prec) :: is_allocated_wrk => psb_s_base_is_allocated_wrk
procedure(psb_s_base_precbld), pass(prec), deferred :: precbld
procedure(psb_s_base_sizeof), pass(prec), deferred :: sizeof
procedure(psb_s_base_precinit), pass(prec), deferred :: precinit
procedure(psb_s_base_precfree), pass(prec), deferred :: free
procedure(psb_s_base_precdescr), pass(prec), deferred :: precdescr
procedure(psb_s_base_precdump), pass(prec), deferred :: dump
procedure(psb_s_base_precclone), pass(prec), deferred :: clone
end type psb_s_base_prec_type
private :: psb_s_base_set_ctxt, psb_s_base_get_ctxt, &
& psb_s_base_get_nzeros
abstract interface
subroutine psb_s_base_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
implicit none
type(psb_desc_type),intent(in) :: desc_data
class(psb_s_base_prec_type), intent(inout) :: prec
real(psb_spk_),intent(in) :: alpha, beta
type(psb_s_vect_type),intent(inout) :: x
type(psb_s_vect_type),intent(inout) :: y
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
real(psb_spk_),intent(inout), optional, target :: work(:)
end subroutine psb_s_base_apply_vect
end interface
abstract interface
subroutine psb_s_base_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
implicit none
type(psb_desc_type),intent(in) :: desc_data
class(psb_s_base_prec_type), intent(inout) :: prec
real(psb_spk_),intent(in) :: alpha, beta
real(psb_spk_),intent(inout) :: x(:)
real(psb_spk_),intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
real(psb_spk_),intent(inout), optional, target :: work(:)
end subroutine psb_s_base_apply
end interface
abstract interface
subroutine psb_s_base_precinit(prec,info)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
Implicit None
class(psb_s_base_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
end subroutine psb_s_base_precinit
end interface
abstract interface
subroutine psb_s_base_precbld(a,desc_a,prec,info,amold,vmold,imold)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat, psb_i_base_vect_type
Implicit None
type(psb_sspmat_type), intent(in), target :: a
type(psb_desc_type), intent(inout), target :: desc_a
class(psb_s_base_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
class(psb_s_base_sparse_mat), intent(in), optional :: amold
class(psb_s_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
end subroutine psb_s_base_precbld
end interface
abstract interface
subroutine psb_s_base_precfree(prec,info)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
Implicit None
class(psb_s_base_prec_type), intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
end subroutine psb_s_base_precfree
end interface
abstract interface
subroutine psb_s_base_precdescr(prec,iout,root, verbosity,prefix)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
Implicit None
class(psb_s_base_prec_type), intent(in) :: prec
integer(psb_ipk_), intent(in), optional :: iout
integer(psb_ipk_), intent(in), optional :: root
integer(psb_ipk_), intent(in), optional :: verbosity
character(len=*), intent(in), optional :: prefix
end subroutine psb_s_base_precdescr
end interface
abstract interface
subroutine psb_s_base_precdump(prec,info,prefix,head)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
implicit none
class(psb_s_base_prec_type), intent(in) :: prec
integer(psb_ipk_), intent(out) :: info
character(len=*), intent(in), optional :: prefix,head
end subroutine psb_s_base_precdump
end interface
abstract interface
subroutine psb_s_base_precclone(prec,precout,info)
import psb_ipk_, psb_spk_, psb_desc_type, psb_s_vect_type, &
& psb_s_base_vect_type, psb_sspmat_type, psb_s_base_prec_type,&
& psb_s_base_sparse_mat
implicit none
class(psb_s_base_prec_type), intent(inout) :: prec
class(psb_s_base_prec_type), allocatable, intent(inout) :: precout
integer(psb_ipk_), intent(out) :: info
end subroutine psb_s_base_precclone
end interface
contains
subroutine psb_s_base_precseti(prec,what,val,info)
Implicit None
class(psb_s_base_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, nrow
character(len=20) :: name='s_base_precseti'
!
! Base version does nothing.
info = psb_success_
return
end subroutine psb_s_base_precseti
subroutine psb_s_base_precsetr(prec,what,val,info)
Implicit None
class(psb_s_base_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(in) :: what
real(psb_spk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, nrow
character(len=20) :: name='s_base_precsetr'
!
! Base version does nothing.
!
info = psb_success_
return
end subroutine psb_s_base_precsetr
subroutine psb_s_base_precsetc(prec,what,val,info)
Implicit None
class(psb_s_base_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(in) :: what
character(len=*), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, nrow
character(len=20) :: name='s_base_precsetc'
!
! Base version does nothing.
!
info = psb_success_
return
end subroutine psb_s_base_precsetc
subroutine psb_s_base_allocate_wrk(prec,info,vmold,desc)
use psb_base_mod
implicit none
! Arguments
class(psb_s_base_prec_type), intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
class(psb_s_base_vect_type), intent(in), optional :: vmold
type(psb_desc_type), intent(in), optional :: desc
! Local variables
integer(psb_ipk_) :: err_act
character(len=20) :: name
info=psb_success_
name = 'psb_s_allocate_wrk'
call psb_erractionsave(err_act)
if (psb_get_errstatus().ne.0) goto 9999
!
! Base version does nothing.
!
info = psb_success_
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine psb_s_base_allocate_wrk
subroutine psb_s_base_free_wrk(prec,info)
use psb_base_mod
implicit none
! Arguments
class(psb_s_base_prec_type), intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
! Local variables
integer(psb_ipk_) :: err_act
character(len=20) :: name
info=psb_success_
name = 'psb_s_allocate_wrk'
call psb_erractionsave(err_act)
if (psb_get_errstatus().ne.0) goto 9999
!
! Base version does nothing.
!
info = psb_success_
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine psb_s_base_free_wrk
function psb_s_base_is_allocated_wrk(prec) result(res)
use psb_base_mod
implicit none
! Arguments
class(psb_s_base_prec_type), intent(in) :: prec
logical :: res
! In the base version we can say yes, because
! there is nothing to allocate
res = .true.
end function psb_s_base_is_allocated_wrk
subroutine psb_s_base_set_ctxt(prec,ctxt)
implicit none
class(psb_s_base_prec_type), intent(inout) :: prec
type(psb_ctxt_type) :: ctxt
prec%ctxt = ctxt
end subroutine psb_s_base_set_ctxt
function psb_s_base_sizeof(prec) result(val)
class(psb_s_base_prec_type), intent(in) :: prec
integer(psb_epk_) :: val
val = 0
return
end function psb_s_base_sizeof
function psb_s_base_get_ctxt(prec) result(val)
class(psb_s_base_prec_type), intent(in) :: prec
type(psb_ctxt_type) :: val
val = prec%ctxt
return
end function psb_s_base_get_ctxt
function psb_s_base_get_nzeros(prec) result(res)
class(psb_s_base_prec_type), intent(in) :: prec
integer(psb_epk_) :: res
res = 0
end function psb_s_base_get_nzeros
function psb_s_base_desc_prefix(prec) result(res)
use psb_base_mod, only : psb_info, psb_root_
implicit none
class(psb_s_base_prec_type), intent(in) :: prec
character(len=32) :: res
!
character(len=32) :: frmtv
type(psb_ctxt_type) :: ctxt
integer(psb_ipk_) :: ni, iam, np
ctxt = prec%ctxt
call psb_info(ctxt,iam,np)
res = ''
if (iam /= psb_root_) then
ni = floor(log10(1.0*np)) + 1
write(frmtv,'(a,i8.8,a)') '(a,i',ni,',a)'
write(res,frmtv) 'Process ',iam,': Preconditioner: '
else
write(res,'(a)') 'Preconditioner: '
end if
end function psb_s_base_desc_prefix
end module psb_s_base_prec_mod