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263 lines
8.5 KiB
Fortran
263 lines
8.5 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 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 z_mumps_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
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use psb_base_mod
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use amg_z_mumps_solver
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Implicit None
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! Arguments
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type(psb_zspmat_type) :: c
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type(psb_zspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(inout) :: desc_a
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class(amg_z_mumps_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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type(psb_zspmat_type), intent(in), target, optional :: b
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class(psb_z_base_sparse_mat), intent(in), optional :: amold
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class(psb_z_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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! Local variables
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type(psb_zspmat_type) :: atmp
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type(psb_z_coo_sparse_mat), target :: acoo
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#if defined(IPK4) && defined(LPK8)
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integer(psb_lpk_), allocatable :: gia(:), gja(:)
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#endif
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integer(psb_ipk_) :: n_row,n_col, nrow_a, nza, npr, npc
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integer(psb_lpk_) :: nglob, nglobrec, nzt
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integer(psb_ipk_) :: ifrst, ibcheck
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integer(psb_ipk_) :: ictxt, ictxt1, icomm, np, iam, me, i, err_act, debug_unit, debug_level
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character(len=20) :: name='z_mumps_solver_bld', ch_err
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#if defined(HAVE_MUMPS_)
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info=psb_success_
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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ictxt = desc_a%get_context()
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call psb_info(ictxt, iam, np)
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if (sv%ipar(1) == amg_local_solver_ ) then
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call psb_init(ictxt1,np=1,basectxt=ictxt,ids=(/iam/))
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icomm = psb_get_mpi_comm(ictxt1)
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allocate(sv%local_ictxt,stat=info)
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sv%local_ictxt = ictxt1
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!write(*,*)iam,'mumps_bld: local +++++>',icomm,sv%local_ictxt
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call psb_info(ictxt1, me, np)
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npr = np
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else if (sv%ipar(1) == amg_global_solver_ ) then
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icomm = psb_get_mpi_comm(ictxt)
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!write(*,*)iam,'mumps_bld: global +++++>',icomm,ictxt
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call psb_info(ictxt, iam, np)
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me = iam
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npr = np
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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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npc = 1
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),' start'
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! if (allocated(sv%id)) then
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! call sv%free(info)
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! deallocate(sv%id)
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! end if
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if(.not.allocated(sv%id)) then
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allocate(sv%id,stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_dealloc_
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call psb_errpush(info,name,a_err='amg_zmumps_default')
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goto 9999
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end if
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end if
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sv%id%comm = icomm
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sv%id%job = -1
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sv%id%par = 1
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if (sv%ipar(3) == 2) then
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sv%id%sym = 2
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else
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sv%id%sym = 0
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end if
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call zmumps(sv%id)
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!WARNING: CALLING zmumps WITH JOB=-1 DESTROY THE SETTING OF DEFAULT:TO FIX
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if (allocated(sv%icntl)) then
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do i=1,amg_mumps_icntl_size
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if (allocated(sv%icntl(i)%item)) then
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!write(0,*) 'MUMPS_BLD: setting entry ',i,' to ', sv%icntl(i)%item
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sv%id%icntl(i) = sv%icntl(i)%item
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end if
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end do
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end if
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if (allocated(sv%rcntl)) then
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do i=1,amg_mumps_rcntl_size
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if (allocated(sv%rcntl(i)%item)) sv%id%cntl(i) = sv%rcntl(i)%item
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end do
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end if
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sv%id%icntl(3)=sv%ipar(2)
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nglob = desc_a%get_global_rows()
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if (sv%ipar(1) == amg_local_solver_ ) then
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nglobrec=desc_a%get_local_rows()
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if (sv%ipar(3) == 2) then
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! Always pass the upper triangle to MUMPS
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call a%triu(c,info,jmax=a%get_nrows())
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call c%set_symmetric()
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else
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call a%csclip(c,info,jmax=a%get_nrows())
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end if
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call c%cp_to(acoo)
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nglob = c%get_nrows()
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if (nglobrec /= nglob) then
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write(*,*)'WARNING: MUMPS solver does not allow overlap in AS yet. '
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write(*,*)'A zero-overlap is used instead'
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end if
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else
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call a%cp_to(acoo)
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end if
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nza = acoo%get_nzeros()
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! switch to global numbering
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if (sv%ipar(1) == amg_global_solver_ ) then
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#if defined(IPK4) && defined(LPK8)
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!
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! Strategy here is as follows: because a call to MUMPS
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! as a gobal solver is mostly done at the coarsest level,
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! even if we start from a problem requiring 8 bytes, chances
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! are that the global size will be suitable for 4 bytes
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! anyway, so we hope for the best, and throw an error
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! if something goes wrong.
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!
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if (nglob > huge(1_psb_ipk_)) then
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write(0,*) iam,' ',trim(name),': Error: overflow of local indices '
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info=psb_err_internal_error_
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call psb_errpush(info,name)
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goto 9999
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end if
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gia = acoo%ia(1:nza)
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gja = acoo%ja(1:nza)
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call psb_loc_to_glob(gia(1:nza), desc_a, info, iact='I')
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call psb_loc_to_glob(gja(1:nza), desc_a, info, iact='I')
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acoo%ia(1:nza) = gia(1:nza)
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acoo%ja(1:nza) = gja(1:nza)
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#else
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!
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! Here global and local numbers have the same size, so this must work.
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!
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call psb_loc_to_glob(acoo%ja(1:nza), desc_a, info, iact='I')
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call psb_loc_to_glob(acoo%ia(1:nza), desc_a, info, iact='I')
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#endif
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if (sv%ipar(3) == 2 ) then
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! Always pass the upper triangle to MUMPS
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block
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integer(psb_ipk_) :: j,nz
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nz = 0
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do j=1,nza
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if (acoo%ja(j) >= acoo%ia(j)) then
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nz = nz + 1
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acoo%ia(nz) = acoo%ia(j)
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acoo%ja(nz) = acoo%ja(j)
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acoo%val(nz) = acoo%val(j)
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end if
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end do
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call acoo%set_nzeros(nz)
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call acoo%set_triangle()
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call acoo%set_upper()
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call acoo%set_symmetric()
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end block
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end if
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end if
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sv%id%irn_loc => acoo%ia
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sv%id%jcn_loc => acoo%ja
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sv%id%a_loc => acoo%val
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sv%id%icntl(18) = 3
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sv%id%n = nglob
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! there should be a better way for this
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sv%id%nnz_loc = acoo%get_nzeros()
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sv%id%nnz = acoo%get_nzeros()
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sv%id%job = 4
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if (sv%ipar(1) == amg_global_solver_ ) then
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call psb_sum(ictxt,sv%id%nnz)
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end if
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!call psb_barrier(ictxt)
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write(*,*)iam, ' calling mumps N,nz,nz_loc',sv%id%n,sv%id%nnz,sv%id%nnz_loc
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call zmumps(sv%id)
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!call psb_barrier(ictxt)
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info = sv%id%infog(1)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='amg_zmumps_fact '
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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nullify(sv%id%irn)
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nullify(sv%id%jcn)
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nullify(sv%id%a)
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call acoo%free()
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sv%built=.true.
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) iam,' ',trim(name),' end'
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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 z_mumps_solver_bld
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