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amg4psblas/psb_dbldaggrmat.f90

1047 lines
28 KiB
Fortran
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!!$
!!$
!!$ MD2P4
!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
!!$ for
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$ Daniela di Serafino Second University of Naples
!!$ Pasqua D'Ambra ICAR-CNR
!!$
!!$ 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 MD2P4 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 MD2P4 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.
!!$
!!$
subroutine psb_dbldaggrmat(a,desc_a,ac,desc_ac,p,info)
use psb_base_mod
use psb_prec_mod, mld_protect_name => psb_dbldaggrmat
implicit none
type(psb_dspmat_type), intent(in), target :: a
type(psb_dspmat_type), intent(inout), target :: ac
type(psb_desc_type), intent(in) :: desc_a
type(psb_desc_type), intent(inout) :: desc_ac
type(psb_dbaseprc_type), intent(inout), target :: p
integer, intent(out) :: info
logical, parameter :: aggr_dump=.false.
integer ::ictxt,np,me, err_act
character(len=20) :: name, ch_err
name='psb_dbldaggrmat'
if(psb_get_errstatus().ne.0) return
info=0
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
select case (p%iprcparm(smth_kind_))
case (no_smth_)
call raw_aggregate(info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='raw_aggregate')
goto 9999
end if
if (aggr_dump) call psb_csprt(90+me,ac,head='% Raw aggregate.')
case(smth_omg_,smth_biz_)
if (aggr_dump) call psb_csprt(70+me,a,head='% Input matrix')
call smooth_aggregate(info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='smooth_aggregate')
goto 9999
end if
if (aggr_dump) call psb_csprt(90+me,ac,head='% Smooth aggregate.')
case default
call psb_errpush(4010,name,a_err=name)
goto 9999
end select
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
contains
subroutine raw_aggregate(info)
use psb_base_mod
use psb_prec_type
use mpi
implicit none
integer, intent(out) :: info
type(psb_dspmat_type) :: b
integer, pointer :: nzbr(:), idisp(:)
integer :: ictxt, nrow, nglob, ncol, ntaggr, nzac, ip, ndx,&
& naggr, np, me, nzt,jl,nzl,nlr,&
& icomm,naggrm1, i, j, k, err_act
name='raw_aggregate'
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)
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
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
naggrm1=sum(p%nlaggr(1:me))
if (p%iprcparm(coarse_mat_) == mat_repl_) 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
nzt = psb_sp_get_nnzeros(a)
call psb_sp_all(b,nzt,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='spall')
goto 9999
end if
call psb_sp_setifld(psb_dupl_ovwrt_,psb_dupl_,b,info)
call psb_sp_setifld(psb_upd_dflt_,psb_upd_,b,info)
b%fida = 'COO'
b%m=a%m
b%k=a%k
call psb_csdp(a,b,info)
if(info /= 0) then
info=4010
ch_err='psb_csdp'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
nzt = psb_sp_get_nnzeros(b)
j = 0
do i=1, nzt
if ((1<=b%ia2(i)).and.(b%ia2(i)<=nrow)) then
j = j + 1
b%aspk(j) = b%aspk(i)
b%ia1(j) = p%mlia(b%ia1(i))
b%ia2(j) = p%mlia(b%ia2(i))
end if
enddo
b%infoa(psb_nnz_)=j
call psb_fixcoo(b,info)
nzt = psb_sp_get_nnzeros(b)
call psb_sp_reall(b,nzt,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='spreall')
goto 9999
end if
b%m = naggr
b%k = naggr
if (p%iprcparm(coarse_mat_) == mat_repl_) then
call psb_cdrep(ntaggr,ictxt,desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdrep')
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='spall')
goto 9999
end if
call psb_get_mpicomm(ictxt,icomm)
do ip=1,np
idisp(ip) = sum(nzbr(1:ip-1))
enddo
ndx = nzbr(me+1)
call mpi_allgatherv(b%aspk,ndx,mpi_double_precision,ac%aspk,nzbr,idisp,&
& mpi_double_precision,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='G'
call psb_fixcoo(ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='sp_free')
goto 9999
end if
else if (p%iprcparm(coarse_mat_) == mat_distr_) then
call psb_cdall(ictxt,desc_ac,info,nl=naggr)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdall')
goto 9999
end if
call psb_cdasb(desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdasb')
goto 9999
end if
call psb_sp_clone(b,ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='spclone')
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
!if(.not.associated(p%av(ap_nd_)%aspk)) p%iprcparm(jac_sweeps_) = 1
!------------------------------------------------------------------
! Split AC=M+N N off-diagonal part
nzl = psb_sp_get_nnzeros(ac)
call psb_sp_all(ac%m,ac%k,p%av(ap_nd_),nzl,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_all')
goto 9999
end if
if(.not.allocated(p%av(ap_nd_)%aspk)) write(0,*) '.not.associated(p%av(ap_nd_)%ia1)'
if(.not.allocated(p%av(ap_nd_)%ia1)) write(0,*) '.not.associated(p%av(ap_nd_)%ia1)'
!write(0,*) 'ok line 238'
k=0
do i=1,nzl
if (ac%ia2(i)>ac%m) then
k = k + 1
p%av(ap_nd_)%aspk(k) = ac%aspk(i)
p%av(ap_nd_)%ia1(k) = ac%ia1(i)
p%av(ap_nd_)%ia2(k) = ac%ia2(i)
endif
enddo
p%av(ap_nd_)%infoa(psb_nnz_) = k
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_ipcoo2csr')
goto 9999
end if
call psb_sum(ictxt,k)
if (k == 0) then
! If the off diagonal part is emtpy, there's no point
! in doing multiple Jacobi sweeps. This is certain
! to happen when running on a single processor.
p%iprcparm(jac_sweeps_) = 1
end if
!write(0,*) 'operations in bldaggrmat are ok !'
!------------------------------------------------------------------
call psb_ipcoo2csr(p%av(ap_nd_),info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='ipcoo2csr')
goto 9999
end if
else
write(0,*) 'Unknown p%iprcparm(coarse_mat) in aggregate_sp',p%iprcparm(coarse_mat_)
end if
call psb_ipcoo2csr(ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='ipcoo2csr')
goto 9999
end if
deallocate(nzbr,idisp)
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 raw_aggregate
subroutine smooth_aggregate(info)
use psb_base_mod
use psb_prec_type
use mpi
implicit none
integer, intent(out) :: info
type(psb_dspmat_type) :: b
integer, pointer :: nzbr(:), idisp(:), ivall(:)
integer :: ictxt, nrow, nglob, ncol, ntaggr, nzac, ip, ndx,&
& naggr, np, me, &
& icomm, naggrm1,naggrp1,i,j,err_act,k,nzl
type(psb_dspmat_type), pointer :: am1,am2
type(psb_dspmat_type) :: am3,am4
logical :: ml_global_nmb
logical, parameter :: test_dump=.false.,debug=.false.
integer, parameter :: ncmax=16
real(kind(1.d0)) :: omega, anorm, tmp, dg
character(len=20) :: name
name='smooth_aggregate'
if(psb_get_errstatus().ne.0) return
info=0
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
call psb_info(ictxt, me, np)
call psb_nullify_sp(b)
call psb_nullify_sp(am3)
call psb_nullify_sp(am4)
am2 => p%av(sm_pr_t_)
am1 => p%av(sm_pr_)
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
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
naggrm1 = sum(p%nlaggr(1:me))
naggrp1 = sum(p%nlaggr(1:me+1))
ml_global_nmb = ( (p%iprcparm(smth_kind_) == smth_omg_).or.&
& ( (p%iprcparm(smth_kind_) == smth_biz_).and.&
& (p%iprcparm(coarse_mat_) == mat_repl_)) )
if (ml_global_nmb) then
p%mlia(1:nrow) = p%mlia(1:nrow) + naggrm1
call psb_halo(p%mlia,desc_a,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='f90_pshalo')
goto 9999
end if
end if
if (aggr_dump) then
open(30+me)
write(30+me,*) '% Aggregation map'
do i=1,ncol
write(30+me,*) i,p%mlia(i)
end do
close(30+me)
end if
! naggr: number of local aggregates
! nrow: local rows.
!
allocate(p%dorig(nrow),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
! Get diagonal D
call psb_sp_getdiag(a,p%dorig,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='sp_getdiag')
goto 9999
end if
do i=1,size(p%dorig)
if (p%dorig(i) /= dzero) then
p%dorig(i) = done / p%dorig(i)
else
p%dorig(i) = done
end if
end do
! where (p%dorig /= dzero)
! p%dorig = done / p%dorig
! elsewhere
! p%dorig = done
! end where
! 1. Allocate Ptilde in sparse matrix form
am4%fida='COO'
am4%m=ncol
if (ml_global_nmb) then
am4%k=ntaggr
call psb_sp_all(ncol,ntaggr,am4,ncol,info)
else
am4%k=naggr
call psb_sp_all(ncol,naggr,am4,ncol,info)
endif
if(info /= 0) then
call psb_errpush(4010,name,a_err='spall')
goto 9999
end if
if (ml_global_nmb) then
do i=1,ncol
am4%aspk(i) = done
am4%ia1(i) = i
am4%ia2(i) = p%mlia(i)
end do
am4%infoa(psb_nnz_) = ncol
else
do i=1,nrow
am4%aspk(i) = done
am4%ia1(i) = i
am4%ia2(i) = p%mlia(i)
end do
am4%infoa(psb_nnz_) = nrow
endif
call psb_ipcoo2csr(am4,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='ipcoo2csr')
goto 9999
end if
call psb_sp_clone(a,am3,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='spclone')
goto 9999
end if
!
! WARNING: the cycles below assume that AM3 does have
! its diagonal elements stored explicitly!!!
! Should we switch to something safer?
!
call psb_sp_scal(am3,p%dorig,info)
if(info /= 0) goto 9999
if (p%iprcparm(om_choice_) == lib_choice_) then
if (p%iprcparm(smth_kind_) == smth_biz_) then
!
! This only works with CSR.
!
anorm = dzero
dg = done
do i=1,am3%m
tmp = dzero
do j=am3%ia2(i),am3%ia2(i+1)-1
if (am3%ia1(j) <= am3%m) then
tmp = tmp + dabs(am3%aspk(j))
endif
if (am3%ia1(j) == i ) then
dg = dabs(am3%aspk(j))
end if
end do
anorm = max(anorm,tmp/dg)
enddo
call psb_amx(ictxt,anorm)
else
anorm = psb_spnrmi(am3,desc_a,info)
endif
omega = 4.d0/(3.d0*anorm)
p%dprcparm(smooth_omega_) = omega
else if (p%iprcparm(om_choice_) == user_choice_) then
omega = p%dprcparm(smooth_omega_)
else if (p%iprcparm(om_choice_) /= user_choice_) then
write(0,*) me,'Error: invalid choice for OMEGA in blaggrmat?? ',&
& p%iprcparm(om_choice_)
end if
if (am3%fida=='CSR') then
do i=1,am3%m
do j=am3%ia2(i),am3%ia2(i+1)-1
if (am3%ia1(j) == i) then
am3%aspk(j) = done - omega*am3%aspk(j)
else
am3%aspk(j) = - omega*am3%aspk(j)
end if
end do
end do
else if (am3%fida=='COO') then
do j=1,am3%infoa(psb_nnz_)
if (am3%ia1(j) /= am3%ia2(j)) then
am3%aspk(j) = - omega*am3%aspk(j)
else
am3%aspk(j) = done - omega*am3%aspk(j)
endif
end do
call psb_ipcoo2csr(am3,info)
else
write(0,*) 'Missing implementation of I sum'
call psb_errpush(4010,name)
goto 9999
end if
if (test_dump) then
open(30+me)
write(30+me,*) 'OMEGA: ',omega
do i=1,size(p%dorig)
write(30+me,*) p%dorig(i)
end do
close(30+me)
end if
if (test_dump) call &
& psb_csprt(20+me,am4,head='% Operator Ptilde.',ivr=desc_a%loc_to_glob)
if (test_dump) call psb_csprt(40+me,am3,head='% (I-wDA)',ivr=desc_a%loc_to_glob,&
& ivc=desc_a%loc_to_glob)
if (debug) write(0,*) me,'Done gather, going for SYMBMM 1'
!
! Symbmm90 does the allocation for its result.
!
! am1 = (i-wDA)Ptilde
! Doing it this way means to consider diag(Ai)
!
!
call psb_symbmm(am3,am4,am1,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='symbmm 1')
goto 9999
end if
call psb_numbmm(am3,am4,am1)
if (debug) write(0,*) me,'Done NUMBMM 1'
call psb_sp_free(am4,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='sp_free')
goto 9999
end if
if (ml_global_nmb) then
!
! Now we have to gather the halo of am1, and add it to itself
! to multiply it by A,
!
call psb_sphalo(am1,desc_a,am4,info,clcnv=.false.)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sphalo')
goto 9999
end if
call psb_rwextd(ncol,am1,info,b=am4)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_rwextd')
goto 9999
end if
call psb_sp_free(am4,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_free')
goto 9999
end if
else
call psb_rwextd(ncol,am1,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='rwextd')
goto 9999
end if
endif
if (test_dump) &
& call psb_csprt(60+me,am1,head='% (I-wDA)Pt',ivr=desc_a%loc_to_glob)
call psb_symbmm(a,am1,am3,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='symbmm 2')
goto 9999
end if
call psb_numbmm(a,am1,am3)
if (debug) write(0,*) me,'Done NUMBMM 2'
if (p%iprcparm(smth_kind_) == smth_omg_) then
call psb_transp(am1,am2,fmt='COO')
nzl = am2%infoa(psb_nnz_)
i=0
!
! Now we have to fix this. The only rows of B that are correct
! are those corresponding to "local" aggregates, i.e. indices in p%mlia(:)
!
do k=1, nzl
if ((naggrm1 < am2%ia1(k)) .and.(am2%ia1(k) <= naggrp1)) then
i = i+1
am2%aspk(i) = am2%aspk(k)
am2%ia1(i) = am2%ia1(k)
am2%ia2(i) = am2%ia2(k)
end if
end do
am2%infoa(psb_nnz_) = i
call psb_ipcoo2csr(am2,info)
else
call psb_transp(am1,am2)
endif
if (debug) write(0,*) me,'starting sphalo/ rwxtd'
if (p%iprcparm(smth_kind_) == smth_omg_) then
! am2 = ((i-wDA)Ptilde)^T
call psb_sphalo(am3,desc_a,am4,info,clcnv=.false.)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sphalo')
goto 9999
end if
call psb_rwextd(ncol,am3,info,b=am4)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_rwextd')
goto 9999
end if
call psb_sp_free(am4,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_free')
goto 9999
end if
else if (p%iprcparm(smth_kind_) == smth_biz_) then
call psb_rwextd(ncol,am3,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_rwextd')
goto 9999
end if
endif
if (debug) write(0,*) me,'starting symbmm 3'
call psb_symbmm(am2,am3,b,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='symbmm 3')
goto 9999
end if
if (debug) write(0,*) me,'starting numbmm 3'
call psb_numbmm(am2,am3,b)
if (debug) write(0,*) me,'Done NUMBMM 3'
!!$ if (aggr_dump) call csprt(50+me,am1,head='% Operator PTrans.')
call psb_sp_free(am3,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_free')
goto 9999
end if
call psb_ipcsr2coo(b,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='ipcsr2coo')
goto 9999
end if
call psb_fixcoo(b,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='fixcoo')
goto 9999
end if
if (test_dump) call psb_csprt(80+me,b,head='% Smoothed aggregate AC.')
select case(p%iprcparm(smth_kind_))
case(smth_omg_)
select case(p%iprcparm(coarse_mat_))
case(mat_distr_)
call psb_sp_clone(b,ac,info)
if(info /= 0) goto 9999
nzac = ac%infoa(psb_nnz_)
nzl = ac%infoa(psb_nnz_)
allocate(ivall(ntaggr),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
i = 1
do ip=1,np
do k=1, p%nlaggr(ip)
ivall(i) = ip
i = i + 1
end do
end do
call psb_cdall(ictxt,desc_ac,info,vg=ivall(1:ntaggr),flag=1)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdall')
goto 9999
end if
call psb_cdins(nzl,ac%ia1,ac%ia2,desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdins')
goto 9999
end if
if (debug) write(0,*) me,'Created aux descr. distr.'
call psb_cdasb(desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdasb')
goto 9999
end if
if (debug) write(0,*) me,'Asmbld aux descr. distr.'
call psb_glob_to_loc(ac%ia1(1:nzl),desc_ac,info,iact='I')
if(info /= 0) then
call psb_errpush(4010,name,a_err='psglob_to_loc')
goto 9999
end if
call psb_glob_to_loc(ac%ia2(1:nzl),desc_ac,info,iact='I')
if(info /= 0) then
call psb_errpush(4010,name,a_err='psglob_to_loc')
goto 9999
end if
ac%m=desc_ac%matrix_data(psb_n_row_)
ac%k=desc_ac%matrix_data(psb_n_col_)
ac%fida='COO'
ac%descra='G'
call psb_sp_free(b,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_free')
goto 9999
end if
deallocate(ivall,nzbr,idisp)
! Split AC=M+N N off-diagonal part
call psb_sp_all(ac%m,ac%k,p%av(ap_nd_),nzl,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_all')
goto 9999
end if
k=0
do i=1,nzl
if (ac%ia2(i)>ac%m) then
k = k + 1
p%av(ap_nd_)%aspk(k) = ac%aspk(i)
p%av(ap_nd_)%ia1(k) = ac%ia1(i)
p%av(ap_nd_)%ia2(k) = ac%ia2(i)
endif
enddo
p%av(ap_nd_)%infoa(psb_nnz_) = k
call psb_ipcoo2csr(p%av(ap_nd_),info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_ipcoo2csr')
goto 9999
end if
call psb_sum(ictxt,k)
if (k == 0) then
! If the off diagonal part is emtpy, there's no point
! in doing multiple Jacobi sweeps. This is certain
! to happen when running on a single processor.
p%iprcparm(jac_sweeps_) = 1
end if
if (np>1) then
nzl = psb_sp_get_nnzeros(am1)
call psb_glob_to_loc(am1%ia1(1:nzl),desc_ac,info,'I')
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_glob_to_loc')
goto 9999
end if
endif
am1%k=desc_ac%matrix_data(psb_n_col_)
if (np>1) then
call psb_ipcsr2coo(am2,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_ipcsr2coo')
goto 9999
end if
nzl = am2%infoa(psb_nnz_)
call psb_glob_to_loc(am2%ia1(1:nzl),desc_ac,info,'I')
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_glob_to_loc')
goto 9999
end if
call psb_ipcoo2csr(am2,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_ipcoo2csr')
goto 9999
end if
end if
am2%m=desc_ac%matrix_data(psb_n_col_)
if (debug) write(0,*) me,'Done ac '
case(mat_repl_)
!
!
call psb_cdrep(ntaggr,ictxt,desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdrep')
goto 9999
end if
nzbr(:) = 0
nzbr(me+1) = b%infoa(psb_nnz_)
call psb_sum(ictxt,nzbr(1:np))
nzac = sum(nzbr)
call psb_sp_all(ntaggr,ntaggr,ac,nzac,info)
if(info /= 0) goto 9999
call psb_get_mpicomm(ictxt,icomm)
do ip=1,np
idisp(ip) = sum(nzbr(1:ip-1))
enddo
ndx = nzbr(me+1)
call mpi_allgatherv(b%aspk,ndx,mpi_double_precision,ac%aspk,nzbr,idisp,&
& mpi_double_precision,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) goto 9999
ac%m = ntaggr
ac%k = ntaggr
ac%infoa(psb_nnz_) = nzac
ac%fida='COO'
ac%descra='G'
call psb_fixcoo(ac,info)
if(info /= 0) goto 9999
call psb_sp_free(b,info)
if(info /= 0) goto 9999
if (me==0) then
if (test_dump) call psb_csprt(80+me,ac,head='% Smoothed aggregate AC.')
endif
deallocate(nzbr,idisp)
case default
write(0,*) 'Inconsistent input in smooth_new_aggregate'
end select
case(smth_biz_)
select case(p%iprcparm(coarse_mat_))
case(mat_distr_)
call psb_sp_clone(b,ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='spclone')
goto 9999
end if
call psb_cdall(ictxt,desc_ac,info,nl=naggr)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdall')
goto 9999
end if
call psb_cdasb(desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdasb')
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
case(mat_repl_)
!
!
call psb_cdrep(ntaggr,ictxt,desc_ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdrep')
goto 9999
end if
nzbr(:) = 0
nzbr(me+1) = b%infoa(psb_nnz_)
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='psb_sp_all')
goto 9999
end if
call psb_get_mpicomm(ictxt,icomm)
do ip=1,np
idisp(ip) = sum(nzbr(1:ip-1))
enddo
ndx = nzbr(me+1)
call mpi_allgatherv(b%aspk,ndx,mpi_double_precision,ac%aspk,nzbr,idisp,&
& mpi_double_precision,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='G'
call psb_fixcoo(ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_fixcoo')
goto 9999
end if
call psb_sp_free(b,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_sp_free')
goto 9999
end if
end select
deallocate(nzbr,idisp)
end select
call psb_ipcoo2csr(ac,info)
if(info /= 0) then
call psb_errpush(4010,name,a_err='psb_ipcoo2csr')
goto 9999
end if
if (debug) write(0,*) me,'Done smooth_aggregate '
call psb_erractionrestore(err_act)
return
9999 continue
call psb_errpush(info,name)
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine smooth_aggregate
end subroutine psb_dbldaggrmat
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