You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
amg4psblas/mlprec/impl/solver/mld_s_mumps_solver_apply.F90

155 lines
4.9 KiB
Fortran

!
!
! MLD2P4 version 2.1
! MultiLevel Domain Decomposition Parallel Preconditioners Package
! based on PSBLAS (Parallel Sparse BLAS version 3.0)
!
! (C) Copyright 2008,2009,2010,2012,2013
!
! Salvatore Filippone
! Pasqua D'Ambra
! Daniela di Serafino
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the MLD2P4 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 MLD2P4 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.
!
!
! Current version of this file contributed by:
! Ambra Abdullahi Hassan
!
!
subroutine s_mumps_solver_apply(alpha,sv,x,beta,y,desc_data,&
& trans,work,info,init,initu)
use psb_base_mod
use mld_s_mumps_solver
implicit none
type(psb_desc_type), intent(in) :: desc_data
class(mld_s_mumps_solver_type), intent(inout) :: sv
real(psb_spk_),intent(inout) :: x(:)
real(psb_spk_),intent(inout) :: y(:)
real(psb_spk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
real(psb_spk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
real(psb_spk_),intent(inout), optional :: initu(:)
integer(psb_ipk_) :: n_row, n_col, nglob
real(psb_spk_), allocatable :: ww(:)
real(psb_spk_), allocatable, target :: gx(:)
integer(psb_ipk_) :: ictxt,np,me,i, err_act
character :: trans_
character(len=20) :: name='s_mumps_solver_apply'
call psb_erractionsave(err_act)
#if defined(HAVE_MUMPS_)
info = psb_success_
trans_ = psb_toupper(trans)
select case(trans_)
case('N')
case('T')
case default
call psb_errpush(psb_err_iarg_invalid_i_,name)
goto 9999
end select
!
! For non-iterative solvers, init and initu are ignored.
!
nglob = desc_data%get_global_rows()
n_row = desc_data%get_local_rows()
n_col = desc_data%get_local_cols()
if (n_col <= size(work)) then
ww = work(1:n_col)
else
allocate(ww(n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/n_col,0,0,0,0/),&
& a_err='real(psb_spk_)')
goto 9999
end if
end if
allocate(gx(nglob),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/nglob,0,0,0,0/),&
& a_err='real(psb_spk_)')
goto 9999
end if
call psb_gather(gx, x, desc_data, info, root=0)
select case(trans_)
case('N')
sv%id%icntl(9) = 1
case('T')
sv%id%icntl(9) = 2
case default
call psb_errpush(psb_err_internal_error_,&
& name,a_err='Invalid TRANS in subsolve')
goto 9999
end select
sv%id%rhs => gx
sv%id%nrhs = 1
sv%id%icntl(1)=-1
sv%id%icntl(2)=-1
sv%id%icntl(3)=-1
sv%id%icntl(4)=-1
sv%id%job = 3
call smumps(sv%id)
call psb_scatter(gx, ww, desc_data, info, root=0)
if (info == psb_success_) then
call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
end if
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,&
& name,a_err='Error in subsolve')
goto 9999
endif
if (nglob > size(work)) then
deallocate(ww)
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
#else
write(psb_err_unit,*) "MUMPS Not Configured, fix make.inc and recompile "
#endif
end subroutine s_mumps_solver_apply