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amg4psblas/mlprec/impl/solver/mld_z_mumps_solver_bld.F90

263 lines
8.5 KiB
Fortran

!
!
! MLD2P4 version 2.2
! 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 z_mumps_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
use psb_base_mod
use mld_z_mumps_solver
Implicit None
! Arguments
type(psb_zspmat_type) :: c
type(psb_zspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(inout) :: desc_a
class(mld_z_mumps_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
type(psb_zspmat_type), intent(in), target, optional :: b
class(psb_z_base_sparse_mat), intent(in), optional :: amold
class(psb_z_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
! Local variables
type(psb_zspmat_type) :: atmp
type(psb_z_coo_sparse_mat), target :: acoo
#if defined(IPK4) && defined(LPK8)
integer(psb_lpk_), allocatable :: gia(:), gja(:)
#endif
integer(psb_ipk_) :: n_row,n_col, nrow_a, nza, npr, npc
integer(psb_lpk_) :: nglob, nglobrec, nzt
integer(psb_ipk_) :: ifrst, ibcheck
integer(psb_ipk_) :: ictxt, ictxt1, icomm, np, iam, me, i, err_act, debug_unit, debug_level
character(len=20) :: name='z_mumps_solver_bld', ch_err
#if defined(HAVE_MUMPS_)
info=psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = desc_a%get_context()
call psb_info(ictxt, iam, np)
if (sv%ipar(1) == mld_local_solver_ ) then
call psb_init(ictxt1,np=1,basectxt=ictxt,ids=(/iam/))
icomm = psb_get_mpi_comm(ictxt1)
allocate(sv%local_ictxt,stat=info)
sv%local_ictxt = ictxt1
!write(*,*)iam,'mumps_bld: local +++++>',icomm,sv%local_ictxt
call psb_info(ictxt1, me, np)
npr = np
else if (sv%ipar(1) == mld_global_solver_ ) then
icomm = psb_get_mpi_comm(ictxt)
!write(*,*)iam,'mumps_bld: global +++++>',icomm,ictxt
call psb_info(ictxt, iam, np)
me = iam
npr = np
else
info = psb_err_internal_error_
call psb_errpush(info,name,&
& a_err='Invalid local/global solver in MUMPS')
goto 9999
end if
npc = 1
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),' start'
! if (allocated(sv%id)) then
! call sv%free(info)
! deallocate(sv%id)
! end if
if(.not.allocated(sv%id)) then
allocate(sv%id,stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_dealloc_
call psb_errpush(info,name,a_err='mld_zmumps_default')
goto 9999
end if
end if
sv%id%comm = icomm
sv%id%job = -1
sv%id%par = 1
if (sv%ipar(3) == 2) then
sv%id%sym = 2
else
sv%id%sym = 0
end if
call zmumps(sv%id)
!WARNING: CALLING zmumps WITH JOB=-1 DESTROY THE SETTING OF DEFAULT:TO FIX
if (allocated(sv%icntl)) then
do i=1,mld_mumps_icntl_size
if (allocated(sv%icntl(i)%item)) then
!write(0,*) 'MUMPS_BLD: setting entry ',i,' to ', sv%icntl(i)%item
sv%id%icntl(i) = sv%icntl(i)%item
end if
end do
end if
if (allocated(sv%rcntl)) then
do i=1,mld_mumps_rcntl_size
if (allocated(sv%rcntl(i)%item)) sv%id%cntl(i) = sv%rcntl(i)%item
end do
end if
sv%id%icntl(3)=sv%ipar(2)
nglob = desc_a%get_global_rows()
if (sv%ipar(1) == mld_local_solver_ ) then
nglobrec=desc_a%get_local_rows()
if (sv%ipar(3) == 2) then
! Always pass the upper triangle to MUMPS
call a%triu(c,info,jmax=a%get_nrows())
call c%set_symmetric()
else
call a%csclip(c,info,jmax=a%get_nrows())
end if
call c%cp_to(acoo)
nglob = c%get_nrows()
if (nglobrec /= nglob) then
write(*,*)'WARNING: MUMPS solver does not allow overlap in AS yet. '
write(*,*)'A zero-overlap is used instead'
end if
else
call a%cp_to(acoo)
end if
nza = acoo%get_nzeros()
! switch to global numbering
if (sv%ipar(1) == mld_global_solver_ ) then
#if defined(IPK4) && defined(LPK8)
!
! Strategy here is as follows: because a call to MUMPS
! as a gobal solver is mostly done at the coarsest level,
! even if we start from a problem requiring 8 bytes, chances
! are that the global size will be suitable for 4 bytes
! anyway, so we hope for the best, and throw an error
! if something goes wrong.
!
if (nglob > huge(1_psb_ipk_)) then
write(0,*) iam,' ',trim(name),': Error: overflow of local indices '
info=psb_err_internal_error_
call psb_errpush(info,name)
goto 9999
end if
gia = acoo%ia(1:nza)
gja = acoo%ja(1:nza)
call psb_loc_to_glob(gia(1:nza), desc_a, info, iact='I')
call psb_loc_to_glob(gja(1:nza), desc_a, info, iact='I')
acoo%ia(1:nza) = gia(1:nza)
acoo%ja(1:nza) = gja(1:nza)
#else
!
! Here global and local numbers have the same size, so this must work.
!
call psb_loc_to_glob(acoo%ja(1:nza), desc_a, info, iact='I')
call psb_loc_to_glob(acoo%ia(1:nza), desc_a, info, iact='I')
#endif
if (sv%ipar(3) == 2 ) then
! Always pass the upper triangle to MUMPS
block
integer(psb_ipk_) :: j,nz
nz = 0
do j=1,nza
if (acoo%ja(j) >= acoo%ia(j)) then
nz = nz + 1
acoo%ia(nz) = acoo%ia(j)
acoo%ja(nz) = acoo%ja(j)
acoo%val(nz) = acoo%val(j)
end if
end do
call acoo%set_nzeros(nz)
call acoo%set_triangle()
call acoo%set_upper()
call acoo%set_symmetric()
end block
end if
end if
sv%id%irn_loc => acoo%ia
sv%id%jcn_loc => acoo%ja
sv%id%a_loc => acoo%val
sv%id%icntl(18) = 3
sv%id%n = nglob
! there should be a better way for this
sv%id%nnz_loc = acoo%get_nzeros()
sv%id%nnz = acoo%get_nzeros()
sv%id%job = 4
if (sv%ipar(1) == mld_global_solver_ ) then
call psb_sum(ictxt,sv%id%nnz)
end if
!call psb_barrier(ictxt)
write(*,*)iam, ' calling mumps N,nz,nz_loc',sv%id%n,sv%id%nnz,sv%id%nnz_loc
call zmumps(sv%id)
!call psb_barrier(ictxt)
info = sv%id%infog(1)
if (info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='mld_zmumps_fact '
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
nullify(sv%id%irn)
nullify(sv%id%jcn)
nullify(sv%id%a)
call acoo%free()
sv%built=.true.
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) iam,' ',trim(name),' end'
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 z_mumps_solver_bld