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155 lines
4.9 KiB
Fortran
155 lines
4.9 KiB
Fortran
!
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!
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! MLD2P4 version 2.1
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! MultiLevel Domain Decomposition Parallel Preconditioners Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.0)
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!
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! (C) Copyright 2008,2009,2010,2012,2013
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Daniela di Serafino
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the MLD2P4 group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! Current version of this file contributed by:
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! Ambra Abdullahi Hassan
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!
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!
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subroutine s_mumps_solver_apply(alpha,sv,x,beta,y,desc_data,&
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& trans,work,info,init,initu)
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use psb_base_mod
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use mld_s_mumps_solver
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_mumps_solver_type), intent(inout) :: sv
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real(psb_spk_),intent(inout) :: x(:)
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real(psb_spk_),intent(inout) :: y(:)
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real(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_spk_),target, intent(inout) :: work(:)
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integer(psb_ipk_), intent(out) :: info
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character, intent(in), optional :: init
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real(psb_spk_),intent(inout), optional :: initu(:)
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integer(psb_ipk_) :: n_row, n_col, nglob
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real(psb_spk_), allocatable :: ww(:)
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real(psb_spk_), allocatable, target :: gx(:)
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integer(psb_ipk_) :: ictxt,np,me,i, err_act
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character :: trans_
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character(len=20) :: name='s_mumps_solver_apply'
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call psb_erractionsave(err_act)
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#if defined(HAVE_MUMPS_)
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info = psb_success_
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trans_ = psb_toupper(trans)
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select case(trans_)
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case('N')
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case('T')
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case default
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end select
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!
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! For non-iterative solvers, init and initu are ignored.
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!
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nglob = desc_data%get_global_rows()
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n_row = desc_data%get_local_rows()
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n_col = desc_data%get_local_cols()
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if (n_col <= size(work)) then
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ww = work(1:n_col)
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else
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allocate(ww(n_col),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/n_col,0,0,0,0/),&
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& a_err='real(psb_spk_)')
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goto 9999
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end if
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end if
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allocate(gx(nglob),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/nglob,0,0,0,0/),&
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& a_err='real(psb_spk_)')
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goto 9999
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end if
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call psb_gather(gx, x, desc_data, info, root=0)
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select case(trans_)
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case('N')
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sv%id%icntl(9) = 1
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case('T')
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sv%id%icntl(9) = 2
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case default
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call psb_errpush(psb_err_internal_error_,&
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& name,a_err='Invalid TRANS in subsolve')
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goto 9999
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end select
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sv%id%rhs => gx
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sv%id%nrhs = 1
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sv%id%icntl(1)=-1
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sv%id%icntl(2)=-1
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sv%id%icntl(3)=-1
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sv%id%icntl(4)=-1
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sv%id%job = 3
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call smumps(sv%id)
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call psb_scatter(gx, ww, desc_data, info, root=0)
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if (info == psb_success_) then
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call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
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end if
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,&
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& name,a_err='Error in subsolve')
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goto 9999
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endif
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if (nglob > size(work)) then
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deallocate(ww)
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endif
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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#else
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write(psb_err_unit,*) "MUMPS Not Configured, fix make.inc and recompile "
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#endif
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end subroutine s_mumps_solver_apply
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