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psblas3/base/comm/internals/psi_covrl_save_a.f90

140 lines
4.3 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.
!
!
!
! Subroutine: psi_covrl_save
! These subroutines save the overlap region of a vector; they are used
! for the transpose matrix-vector product when there is a nonempty overlap.
!
subroutine psi_covrl_saver1(x,xs,desc_a,info)
use psi_mod, psi_protect_name => psi_covrl_saver1
use psb_realloc_mod
implicit none
complex(psb_spk_), intent(inout) :: x(:)
complex(psb_spk_), allocatable :: xs(:)
type(psb_desc_type), intent(in) :: desc_a
integer(psb_ipk_), intent(out) :: info
! locals
integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
character(len=20) :: name, ch_err
name='psi_covrl_saver1'
info = psb_success_
call psb_erractionsave(err_act)
if (psb_errstatus_fatal()) then
info = psb_err_internal_error_ ; goto 9999
end if
ictxt = desc_a%get_context()
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
isz = size(desc_a%ovrlap_elem,1)
call psb_realloc(isz,xs,info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
endif
do i=1, isz
idx = desc_a%ovrlap_elem(i,1)
xs(i) = x(idx)
end do
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ictxt,err_act)
return
end subroutine psi_covrl_saver1
subroutine psi_covrl_saver2(x,xs,desc_a,info)
use psi_mod, psi_protect_name => psi_covrl_saver2
use psb_realloc_mod
implicit none
complex(psb_spk_), intent(inout) :: x(:,:)
complex(psb_spk_), allocatable :: xs(:,:)
type(psb_desc_type), intent(in) :: desc_a
integer(psb_ipk_), intent(out) :: info
! locals
integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
character(len=20) :: name, ch_err
name='psi_covrl_saver2'
info = psb_success_
call psb_erractionsave(err_act)
if (psb_errstatus_fatal()) then
info = psb_err_internal_error_ ; goto 9999
end if
ictxt = desc_a%get_context()
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
isz = size(desc_a%ovrlap_elem,1)
nc = size(x,2)
call psb_realloc(isz,nc,xs,info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
endif
do i=1, isz
idx = desc_a%ovrlap_elem(i,1)
xs(i,:) = x(idx,:)
end do
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ictxt,err_act)
return
end subroutine psi_covrl_saver2