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315 lines
9.4 KiB
Fortran
315 lines
9.4 KiB
Fortran
!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid 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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! Fabio Durastante
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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 AMG4PSBLAS 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 prior 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 AMG4PSBLAS 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 d_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 amg_d_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(amg_d_mumps_solver_type), intent(inout) :: sv
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real(psb_dpk_),intent(inout) :: x(:)
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real(psb_dpk_),intent(inout) :: y(:)
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real(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_dpk_),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_dpk_),intent(inout), optional :: initu(:)
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integer(psb_ipk_) :: n_row, n_col
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integer(psb_lpk_) :: nglob
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integer(psb_epk_) :: eng
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real(psb_dpk_), allocatable :: ww(:)
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real(psb_dpk_), allocatable, target :: rhs_loc(:), sol_loc(:)
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real(psb_dpk_), allocatable, target :: gx(:)
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integer(psb_lpk_), allocatable :: gidx(:)
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integer, allocatable, target :: irhs_loc(:), isol_loc(:)
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integer(psb_ipk_) :: i, err_act
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character :: trans_
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character(len=20) :: name='d_mumps_solver_apply'
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call psb_erractionsave(err_act)
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#if defined(AMG_HAVE_MUMPS)
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#if defined(AMG_MUMPS_VERSION) && (AMG_MUMPS_VERSION <= 590)
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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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! Running in local mode?
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if (sv%ipar(1) == amg_local_solver_ ) then
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gx = x
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else if (sv%ipar(1) == amg_global_solver_ ) then
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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/),&
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& a_err='real(psb_dpk_)')
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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_; eng = nglob
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call psb_errpush(info,name,e_err=(/eng/),&
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& a_err='real(psb_dpk_)')
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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=izero)
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else
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info=psb_err_internal_error_
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call psb_errpush(info,name,&
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& a_err='Invalid local/global solver in MUMPS')
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goto 9999
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end if
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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 dmumps(sv%id)
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if (sv%ipar(1) == amg_local_solver_ ) then
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call psb_geaxpby(alpha,gx,beta,y,desc_data,info)
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else
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call psb_scatter(gx, ww, desc_data, info, root=izero)
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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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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 (allocated(ww)) deallocate(ww)
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call psb_erractionrestore(err_act)
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return
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#else
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! Snapshot MUMPS branch (e.g. snapshot06052026 and newer snapshots).
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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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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 (sv%ipar(1) == amg_local_solver_ ) then
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gx = x
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sv%id%icntl(20) = 0
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sv%id%icntl(21) = 0
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else if (sv%ipar(1) == amg_global_solver_ ) then
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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/),&
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& a_err='real(psb_dpk_)')
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goto 9999
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end if
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end if
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allocate(rhs_loc(max(n_row,1)),sol_loc(max(n_row,1)),&
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& irhs_loc(max(n_row,1)),isol_loc(max(n_row,1)),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_; eng = max(n_row,1)
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call psb_errpush(info,name,e_err=(/eng/),&
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& a_err='real(psb_dpk_)')
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goto 9999
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end if
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ww = 0.0_psb_dpk_
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sol_loc = 0.0_psb_dpk_
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rhs_loc = 0.0_psb_dpk_
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gidx = desc_data%get_global_indices(owned=.true.)
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if (size(gidx) /= n_row) then
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info = psb_err_internal_error_
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call psb_errpush(info,name,&
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& a_err='Invalid local row distribution in MUMPS')
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goto 9999
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end if
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if ((n_row > 0) .and. ((minval(gidx) < 1_psb_lpk_) .or. &
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& (maxval(gidx) > int(huge(0),psb_lpk_)))) then
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info = psb_err_internal_error_
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call psb_errpush(info,name,&
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& a_err='Overflow in distributed MUMPS RHS indices')
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goto 9999
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end if
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if (n_row > 0) then
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rhs_loc(1:n_row) = x(1:n_row)
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irhs_loc(1:n_row) = int(gidx(1:n_row))
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isol_loc(1:n_row) = int(gidx(1:n_row))
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end if
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else
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info=psb_err_internal_error_
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call psb_errpush(info,name,&
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& a_err='Invalid local/global solver in MUMPS')
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goto 9999
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end if
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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%nrhs = 1
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if (sv%ipar(1) == amg_local_solver_ ) then
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sv%id%nloc_rhs = 0
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sv%id%lrhs_loc = 0
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sv%id%nsol_loc = 0
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sv%id%lsol_loc = 0
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nullify(sv%id%rhs_loc)
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nullify(sv%id%irhs_loc)
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nullify(sv%id%sol_loc)
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nullify(sv%id%isol_loc)
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sv%id%rhs => gx
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else
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nullify(sv%id%rhs)
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sv%id%icntl(20) = 10
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sv%id%nloc_rhs = n_row
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sv%id%lrhs_loc = n_row
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sv%id%rhs_loc => rhs_loc
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sv%id%irhs_loc => irhs_loc
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sv%id%icntl(21) = 2
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sv%id%nsol_loc = n_row
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sv%id%lsol_loc = n_row
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sv%id%sol_loc => sol_loc
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sv%id%isol_loc => isol_loc
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end if
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! Snapshot path: preserve stream settings coming from build,
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! only enforce silent mode if the user did not set them explicitly.
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if (sv%id%icntl(1) == 0) sv%id%icntl(1) = -1
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if (sv%id%icntl(2) == 0) sv%id%icntl(2) = -1
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if (sv%id%icntl(3) == 0) sv%id%icntl(3) = -1
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if (sv%id%icntl(4) == 0) sv%id%icntl(4) = -1
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sv%id%job = 3
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call dmumps(sv%id)
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if (sv%ipar(1) == amg_local_solver_ ) then
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call psb_geaxpby(alpha,gx,beta,y,desc_data,info)
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else
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if (n_row > 0) ww(1:n_row) = sol_loc(1:n_row)
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call psb_geaxpby(alpha,ww,beta,y,desc_data,info)
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end if
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nullify(sv%id%rhs)
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nullify(sv%id%rhs_loc)
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nullify(sv%id%irhs_loc)
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nullify(sv%id%sol_loc)
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nullify(sv%id%isol_loc)
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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 (allocated(ww)) deallocate(ww)
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call psb_erractionrestore(err_act)
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return
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#endif
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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 d_mumps_solver_apply
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