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.
253 lines
8.0 KiB
Fortran
253 lines
8.0 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS v.2.0)
|
|
!!$
|
|
!!$ (C) Copyright 2007 Alfredo Buttari University of Rome Tor Vergata
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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.
|
|
!!$
|
|
!!$
|
|
! File: mld_zaggrmat_raw_asb.F90
|
|
!
|
|
! Subroutine: mld_zaggrmat_raw_asb
|
|
! Version: complex
|
|
!
|
|
! This routine builds a coarse-level matrix A_C from a fine-level matrix A
|
|
! by using a Galerkin approach, i.e.
|
|
!
|
|
! A_C = P_C^T A P_C,
|
|
!
|
|
! where P_C is the piecewise constant interpolation operator corresponding
|
|
! the fine-to-coarse level mapping built by mld_aggrmap_bld.
|
|
!
|
|
! The coarse-level matrix A_C is distributed among the parallel processes or
|
|
! replicated on each of them, according to the value of p%iprcparm(mld_coarse_mat_),
|
|
! specified by the user through mld_dprecinit and mld_dprecset.
|
|
!
|
|
! For details see
|
|
! P. D'Ambra, D. di Serafino and S. Filippone, On the development of
|
|
! PSBLAS-based parallel two-level Schwarz preconditioners, Appl. Num. Math.,
|
|
! 57 (2007), 1181-1196.
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_zspmat_type), input.
|
|
! The sparse matrix structure containing the local part of
|
|
! the fine-level matrix.
|
|
! desc_a - type(psb_desc_type), input.
|
|
! The communication descriptor of the fine-level matrix.
|
|
! ac - type(psb_zspmat_type), output.
|
|
! The sparse matrix structure containing the local part of
|
|
! the coarse-level matrix.
|
|
! desc_ac - type(psb_desc_type), output.
|
|
! The communication descriptor of the coarse-level matrix.
|
|
! p - type(mld_zbaseprc_type), input/output.
|
|
! The base preconditioner data structure containing the local
|
|
! part of the base preconditioner to be built.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine mld_zaggrmat_raw_asb(a,desc_a,ac,desc_ac,p,info)
|
|
use psb_base_mod
|
|
use mld_prec_mod, mld_protect_name => mld_zaggrmat_raw_asb
|
|
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
|
|
! Arguments
|
|
type(psb_zspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
type(psb_zspmat_type), intent(out) :: ac
|
|
type(psb_desc_type), intent(out) :: desc_ac
|
|
type(mld_zbaseprc_type), intent(inout), target :: p
|
|
integer, intent(out) :: info
|
|
|
|
! Local variables
|
|
integer ::ictxt,np,me, err_act, icomm
|
|
character(len=20) :: name
|
|
type(psb_zspmat_type) :: b
|
|
integer, pointer :: nzbr(:), idisp(:)
|
|
integer :: nrow, nglob, ncol, ntaggr, nzac, ip, ndx,&
|
|
& naggr, nzt,naggrm1, i
|
|
|
|
name='mld_aggrmat_raw_asb'
|
|
if(psb_get_errstatus().ne.0) return
|
|
info=0
|
|
call psb_erractionsave(err_act)
|
|
|
|
call psb_nullify_sp(b)
|
|
|
|
ictxt = psb_cd_get_context(desc_a)
|
|
icomm = psb_cd_get_mpic(desc_a)
|
|
call psb_info(ictxt, me, np)
|
|
nglob = psb_cd_get_global_rows(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
ncol = psb_cd_get_local_cols(desc_a)
|
|
|
|
naggr = p%nlaggr(me+1)
|
|
ntaggr = sum(p%nlaggr)
|
|
allocate(nzbr(np), idisp(np),stat=info)
|
|
if (info /= 0) then
|
|
info=4025
|
|
call psb_errpush(info,name,i_err=(/2*np,0,0,0,0/),&
|
|
& a_err='integer')
|
|
goto 9999
|
|
end if
|
|
|
|
naggrm1=sum(p%nlaggr(1:me))
|
|
|
|
if (p%iprcparm(mld_coarse_mat_) == mld_repl_mat_) then
|
|
do i=1, nrow
|
|
p%mlia(i) = p%mlia(i) + naggrm1
|
|
end do
|
|
call psb_halo(p%mlia,desc_a,info)
|
|
end if
|
|
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='psb_halo')
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_sp_clip(a,b,info,jmax=nrow)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='spclip')
|
|
goto 9999
|
|
end if
|
|
! Out from sp_clip is always in COO, but just in case..
|
|
if (tolower(b%fida) /= 'coo') then
|
|
call psb_errpush(4010,name,a_err='spclip NOT COO')
|
|
goto 9999
|
|
end if
|
|
|
|
nzt = psb_sp_get_nnzeros(b)
|
|
do i=1, nzt
|
|
b%ia1(i) = p%mlia(b%ia1(i))
|
|
b%ia2(i) = p%mlia(b%ia2(i))
|
|
enddo
|
|
b%m = naggr
|
|
b%k = naggr
|
|
! This is to minimize data exchange
|
|
call psb_spcnv(b,info,afmt='coo',dupl=psb_dupl_add_)
|
|
|
|
if (p%iprcparm(mld_coarse_mat_) == mld_repl_mat_) then
|
|
|
|
call psb_cdall(ictxt,desc_ac,info,mg=ntaggr,repl=.true.)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='psb_cdall')
|
|
goto 9999
|
|
end if
|
|
|
|
nzbr(:) = 0
|
|
nzbr(me+1) = nzt
|
|
call psb_sum(ictxt,nzbr(1:np))
|
|
nzac = sum(nzbr)
|
|
|
|
call psb_sp_all(ntaggr,ntaggr,ac,nzac,info)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='sp_all')
|
|
goto 9999
|
|
end if
|
|
|
|
do ip=1,np
|
|
idisp(ip) = sum(nzbr(1:ip-1))
|
|
enddo
|
|
ndx = nzbr(me+1)
|
|
|
|
call mpi_allgatherv(b%aspk,ndx,mpi_double_complex,ac%aspk,nzbr,idisp,&
|
|
& mpi_double_complex,icomm,info)
|
|
call mpi_allgatherv(b%ia1,ndx,mpi_integer,ac%ia1,nzbr,idisp,&
|
|
& mpi_integer,icomm,info)
|
|
call mpi_allgatherv(b%ia2,ndx,mpi_integer,ac%ia2,nzbr,idisp,&
|
|
& mpi_integer,icomm,info)
|
|
if(info /= 0) then
|
|
info=-1
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
ac%m = ntaggr
|
|
ac%k = ntaggr
|
|
ac%infoa(psb_nnz_) = nzac
|
|
ac%fida='COO'
|
|
ac%descra='GUN'
|
|
call psb_spcnv(ac,info,afmt='coo',dupl=psb_dupl_add_)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='sp_free')
|
|
goto 9999
|
|
end if
|
|
|
|
else if (p%iprcparm(mld_coarse_mat_) == mld_distr_mat_) then
|
|
|
|
call psb_cdall(ictxt,desc_ac,info,nl=naggr)
|
|
if (info == 0) call psb_cdasb(desc_ac,info)
|
|
if (info == 0) call psb_sp_clone(b,ac,info)
|
|
if(info /= 0) then
|
|
call psb_errpush(4001,name,a_err='Build ac, desc_ac')
|
|
goto 9999
|
|
end if
|
|
call psb_sp_free(b,info)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='sp_free')
|
|
goto 9999
|
|
end if
|
|
|
|
else
|
|
info = 4001
|
|
call psb_errpush(4001,name,a_err='invalid mld_coarse_mat_')
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(nzbr,idisp)
|
|
|
|
call psb_spcnv(ac,info,afmt='csr',dupl=psb_dupl_add_)
|
|
if(info /= 0) then
|
|
call psb_errpush(4010,name,a_err='ipcoo2csr')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act.eq.psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_zaggrmat_raw_asb
|