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psblas3/base/internals/psi_cswapdata.F90

1001 lines
29 KiB
Fortran

psblas2-dev: Make.inc.in README base/comm/Makefile base/comm/psb_cgather.f90 base/comm/psb_chalo.f90 base/comm/psb_covrl.f90 base/comm/psb_sgather.f90 base/comm/psb_shalo.f90 base/comm/psb_sovrl.f90 base/internals/Makefile base/internals/psi_cswapdata.F90 base/internals/psi_cswaptran.F90 base/internals/psi_sswapdata.F90 base/internals/psi_sswaptran.F90 base/modules/Makefile base/modules/psb_blacs_mod.f90 base/modules/psb_comm_mod.f90 base/modules/psb_const_mod.f90 base/modules/psb_error_mod.F90 base/modules/psb_inter_desc_type.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f90 base/modules/psb_spsb_mod.f90 base/modules/psb_string_mod.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/modules/psi_serial_mod.f90 base/psblas/Makefile base/psblas/psb_camax.f90 base/psblas/psb_casum.f90 base/psblas/psb_caxpby.f90 base/psblas/psb_cdot.f90 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base/serial/psb_ccsnmi.f90 base/serial/psb_ccsprt.f90 base/serial/psb_ccssm.f90 base/serial/psb_ccssv.f90 base/serial/psb_cfixcoo.f90 base/serial/psb_cgelp.f90 base/serial/psb_cipcoo2csc.f90 base/serial/psb_cipcoo2csr.f90 base/serial/psb_cipcsr2coo.f90 base/serial/psb_cneigh.f90 base/serial/psb_cnumbmm.f90 base/serial/psb_crwextd.f90 base/serial/psb_cspclip.f90 base/serial/psb_cspcnv.f90 base/serial/psb_cspgetrow.f90 base/serial/psb_cspgtblk.f90 base/serial/psb_cspgtdiag.f90 base/serial/psb_cspscal.f90 base/serial/psb_csymbmm.f90 base/serial/psb_ctransc.f90 base/serial/psb_ctransp.f90 base/serial/psb_dcoins.f90 base/serial/psb_dspcnv.f90 base/serial/psb_getrow_mod.f90 base/serial/psb_regen_mod.f90 base/serial/psb_scoins.f90 base/serial/psb_scsmm.f90 base/serial/psb_scsmv.f90 base/serial/psb_scsnmi.f90 base/serial/psb_scsprt.f90 base/serial/psb_scssm.f90 base/serial/psb_scssv.f90 base/serial/psb_sfixcoo.f90 base/serial/psb_sgelp.f90 base/serial/psb_sipcoo2csc.f90 base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_snumbmm.f90 base/serial/psb_srwextd.f90 base/serial/psb_sspclip.f90 base/serial/psb_sspcnv.f90 base/serial/psb_sspgetrow.f90 base/serial/psb_sspgtblk.f90 base/serial/psb_sspgtdiag.f90 base/serial/psb_sspscal.f90 base/serial/psb_ssymbmm.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsnmi.f90 base/serial/psb_zspcnv.f90 base/tools/Makefile base/tools/psb_callc.f90 base/tools/psb_casb.f90 base/tools/psb_ccdbldext.F90 base/tools/psb_cfree.f90 base/tools/psb_cins.f90 base/tools/psb_cspalloc.f90 base/tools/psb_cspasb.f90 base/tools/psb_cspfree.f90 base/tools/psb_csphalo.F90 base/tools/psb_cspins.f90 base/tools/psb_csprn.f90 base/tools/psb_dspins.f90 base/tools/psb_sallc.f90 base/tools/psb_sasb.f90 base/tools/psb_scdbldext.F90 base/tools/psb_sfree.f90 base/tools/psb_sins.f90 base/tools/psb_sspalloc.f90 base/tools/psb_sspasb.f90 base/tools/psb_sspfree.f90 base/tools/psb_ssphalo.F90 base/tools/psb_sspins.f90 base/tools/psb_ssprn.f90 base/tools/psb_zspins.f90 config/acx_lapack.m4 configure.ac configure krylov/Makefile krylov/psb_cbicg.f90 krylov/psb_ccg.f90 krylov/psb_ccgs.f90 krylov/psb_ccgstab.f90 krylov/psb_ccgstabl.f90 krylov/psb_crgmres.f90 krylov/psb_dcg.F90 krylov/psb_dcg.f90 krylov/psb_krylov_mod.f90 krylov/psb_sbicg.f90 krylov/psb_scg.F90 krylov/psb_scgs.f90 krylov/psb_scgstab.F90 krylov/psb_scgstabl.f90 krylov/psb_srgmres.f90 krylov/psb_zcg.F90 krylov/psb_zcg.f90 prec/Makefile prec/psb_cbjac_aply.f90 prec/psb_cbjac_bld.f90 prec/psb_cdiagsc_bld.f90 prec/psb_cgprec_aply.f90 prec/psb_cilu_fct.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_cprecinit.f90 prec/psb_cprecset.f90 prec/psb_prec_mod.f90 prec/psb_prec_type.f90 prec/psb_sbjac_aply.f90 prec/psb_sbjac_bld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sgprec_aply.f90 prec/psb_silu_fct.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_sprecinit.f90 prec/psb_sprecset.f90 test/fileread/Makefile test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/getp.f90 test/fileread/runs/cfs.inp test/fileread/runs/sfs.inp test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/Makefile test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_hbio_mod.f90 util/psb_mat_dist_mod.f90 util/psb_mmio_mod.f90 util/psb_read_mat_mod.f90 Merged the single precision branch.
17 years ago
!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari 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 PSBLAS 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 PSBLAS 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: psi_cswapdata.F90
!
! Subroutine: psi_cswapdatam
! Does the data exchange among processes. Essentially this is doing
! a variable all-to-all data exchange (ALLTOALLV in MPI parlance), but
! it is capable of pruning empty exchanges, which are very likely in out
! application environment. All the variants have the same structure
! In all these subroutines X may be: I Integer
! D real(psb_spk_)
! Z complex(psb_spk_)
! Basically the operation is as follows: on each process, we identify
! sections SND(Y) and RCV(Y); then we do a send on (PACK(SND(Y)));
! then we receive, and we do an update with Y = UNPACK(RCV(Y)) + BETA * Y
! but only on the elements involved in the UNPACK operation.
! Thus: for halo data exchange, the receive section is confined in the
! halo indices, and BETA=0, whereas for overlap exchange the receive section
! is scattered in the owned indices, and BETA=1.
!
! Arguments:
! flag - integer Choose the algorithm for data exchange:
! this is chosen through bit fields.
! swap_mpi = iand(flag,psb_swap_mpi_) /= 0
! swap_sync = iand(flag,psb_swap_sync_) /= 0
! swap_send = iand(flag,psb_swap_send_) /= 0
! swap_recv = iand(flag,psb_swap_recv_) /= 0
! if (swap_mpi): use underlying MPI_ALLTOALLV.
! if (swap_sync): use PSB_SND and PSB_RCV in
! synchronized pairs
! if (swap_send .and. swap_recv): use mpi_irecv
! and mpi_send
! if (swap_send): use psb_snd (but need another
! call with swap_recv to complete)
! if (swap_recv): use psb_rcv (completing a
! previous call with swap_send)
!
!
! n - integer Number of columns in Y
! beta - X Choose overwrite or sum.
! y(:,:) - X The data area
! desc_a - type(psb_desc_type). The communication descriptor.
! work(:) - X Buffer space. If not sufficient, will do
! our own internal allocation.
! info - integer. return code.
! data - integer which list is to be used to exchange data
! default psb_comm_halo_
! psb_comm_halo_ use halo_index
! psb_comm_ext_ use ext_index
! psb_comm_ovrl_ use ovrl_index
! psb_comm_mov_ use ovr_mst_idx
!
!
subroutine psi_cswapdatam(flag,n,beta,y,desc_a,work,info,data)
use psi_mod, psb_protect_name => psi_cswapdatam
use psb_error_mod
use psb_descriptor_type
use psb_penv_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer, intent(in) :: flag, n
integer, intent(out) :: info
complex(psb_spk_) :: y(:,:), beta
complex(psb_spk_), target :: work(:)
type(psb_desc_type),target :: desc_a
integer, optional :: data
! locals
integer :: ictxt, np, me, icomm, idxs, idxr, totxch, data_, err_act
integer, pointer :: d_idx(:)
character(len=20) :: name
info = 0
name='psi_swap_data'
call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
icomm = psb_cd_get_mpic(desc_a)
call psb_info(ictxt,me,np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
if (.not.psb_is_asb_desc(desc_a)) then
info = 1122
call psb_errpush(info,name)
goto 9999
endif
if(present(data)) then
data_ = data
else
data_ = psb_comm_halo_
end if
call psb_cd_get_list(data_,desc_a,d_idx,totxch,idxr,idxs,info)
if (info /= 0) then
call psb_errpush(4001,name,a_err='psb_cd_get_list')
goto 9999
end if
call psi_swapdata(ictxt,icomm,flag,n,beta,y,d_idx,totxch,idxs,idxr,work,info)
if (info /= 0) goto 9999
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psi_cswapdatam
subroutine psi_cswapidxm(ictxt,icomm,flag,n,beta,y,idx,totxch,totsnd,totrcv,work,info)
use psi_mod, psb_protect_name => psi_cswapidxm
use psb_error_mod
use psb_descriptor_type
use psb_penv_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer, intent(in) :: ictxt,icomm,flag,n
integer, intent(out) :: info
complex(psb_spk_) :: y(:,:), beta
complex(psb_spk_), target :: work(:)
integer, intent(in) :: idx(:),totxch,totsnd, totrcv
! locals
integer :: np, me, nesd, nerv,&
& proc_to_comm, p2ptag, p2pstat(mpi_status_size),&
& iret, err_act, i, idx_pt, totsnd_, totrcv_,&
& snd_pt, rcv_pt, pnti, data_
integer, allocatable, dimension(:) :: bsdidx, brvidx,&
& sdsz, rvsz, prcid, rvhd, sdhd
integer :: int_err(5)
logical :: swap_mpi, swap_sync, swap_send, swap_recv,&
& albf,do_send,do_recv
logical, parameter :: usersend=.false.
complex(psb_spk_), pointer, dimension(:) :: sndbuf, rcvbuf
#ifdef HAVE_VOLATILE
volatile :: sndbuf, rcvbuf
#endif
character(len=20) :: name
info = 0
name='psi_swap_data'
call psb_erractionsave(err_act)
call psb_info(ictxt,me,np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
swap_mpi = iand(flag,psb_swap_mpi_) /= 0
swap_sync = iand(flag,psb_swap_sync_) /= 0
swap_send = iand(flag,psb_swap_send_) /= 0
swap_recv = iand(flag,psb_swap_recv_) /= 0
do_send = swap_mpi .or. swap_sync .or. swap_send
do_recv = swap_mpi .or. swap_sync .or. swap_recv
totrcv_ = totrcv * n
totsnd_ = totsnd * n
if (swap_mpi) then
allocate(sdsz(0:np-1), rvsz(0:np-1), bsdidx(0:np-1),&
& brvidx(0:np-1), rvhd(0:np-1), sdhd(0:np-1), prcid(0:np-1),&
& stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
rvhd(:) = mpi_request_null
sdsz(:) = 0
rvsz(:) = 0
! prepare info for communications
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
call psb_get_rank(prcid(proc_to_comm),ictxt,proc_to_comm)
brvidx(proc_to_comm) = rcv_pt
rvsz(proc_to_comm) = n*nerv
bsdidx(proc_to_comm) = snd_pt
sdsz(proc_to_comm) = n*nesd
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
else
allocate(rvhd(totxch),prcid(totxch),stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
end if
totrcv_ = max(totrcv_,1)
totsnd_ = max(totsnd_,1)
if((totrcv_+totsnd_) < size(work)) then
sndbuf => work(1:totsnd_)
rcvbuf => work(totsnd_+1:totsnd_+totrcv_)
albf=.false.
else
allocate(sndbuf(totsnd_),rcvbuf(totrcv_), stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
albf=.true.
end if
if (do_send) then
! Pack send buffers
pnti = 1
snd_pt = 1
do i=1, totxch
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
idx_pt = 1+pnti+nerv+psb_n_elem_send_
call psi_gth(nesd,n,idx(idx_pt:idx_pt+nesd-1),&
& y,sndbuf(snd_pt:snd_pt+n*nesd-1))
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
end if
! Case SWAP_MPI
if (swap_mpi) then
! swap elements using mpi_alltoallv
call mpi_alltoallv(sndbuf,sdsz,bsdidx,&
& mpi_complex,rcvbuf,rvsz,&
& brvidx,mpi_complex,icomm,iret)
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
else if (swap_sync) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (proc_to_comm < me) then
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
else if (proc_to_comm > me) then
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
else if (proc_to_comm == me) then
if (nesd /= nerv) then
write(0,*) 'Fatal error in swapdata: mismatch on self sendf',nerv,nesd
end if
rcvbuf(rcv_pt:rcv_pt+n*nerv-1) = sndbuf(snd_pt:snd_pt+n*nesd-1)
end if
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
else if (swap_send .and. swap_recv) then
! First I post all the non blocking receives
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
call psb_get_rank(prcid(i),ictxt,proc_to_comm)
if ((nerv>0).and.(proc_to_comm/=me)) then
p2ptag = krecvid(ictxt,proc_to_comm,me)
call mpi_irecv(rcvbuf(rcv_pt),n*nerv,&
& mpi_complex,prcid(i),&
& p2ptag, icomm,rvhd(i),iret)
end if
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
! Then I post all the blocking sends
if (usersend) call mpi_barrier(icomm,info)
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
p2ptag=ksendid(ictxt,proc_to_comm,me)
if ((nesd>0).and.(proc_to_comm/=me)) then
if (usersend) then
call mpi_rsend(sndbuf(snd_pt),n*nesd,&
& mpi_complex,prcid(i),&
& p2ptag,icomm,iret)
else
call mpi_send(sndbuf(snd_pt),n*nesd,&
& mpi_complex,prcid(i),&
& p2ptag,icomm,iret)
end if
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
end if
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
pnti = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
p2ptag = krecvid(ictxt,proc_to_comm,me)
if ((proc_to_comm /= me).and.(nerv>0)) then
call mpi_wait(rvhd(i),p2pstat,iret)
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
else if (proc_to_comm == me) then
if (nesd /= nerv) then
write(0,*) 'Fatal error in swapdata: mismatch on self sendf',nerv,nesd
end if
rcvbuf(rcv_pt:rcv_pt+n*nerv-1) = sndbuf(snd_pt:snd_pt+n*nesd-1)
end if
pnti = pnti + nerv + nesd + 3
end do
else if (swap_send) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
else if (swap_recv) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
end if
if (do_recv) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
idx_pt = 1+pnti+psb_n_elem_recv_
call psi_sct(nerv,n,idx(idx_pt:idx_pt+nerv-1),&
& rcvbuf(rcv_pt:rcv_pt+n*nerv-1),beta,y)
rcv_pt = rcv_pt + n*nerv
snd_pt = snd_pt + n*nesd
pnti = pnti + nerv + nesd + 3
end do
end if
if (swap_mpi) then
deallocate(sdsz,rvsz,bsdidx,brvidx,rvhd,prcid,sdhd,&
& stat=info)
else
deallocate(rvhd,prcid,stat=info)
end if
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
if(albf) deallocate(sndbuf,rcvbuf,stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psi_cswapidxm
!
!
! Subroutine: psi_cswapdatav
! Does the data exchange among processes. Essentially this is doing
! a variable all-to-all data exchange (ALLTOALLV in MPI parlance), but
! it is capable of pruning empty exchanges, which are very likely in out
! application environment. All the variants have the same structure
! In all these subroutines X may be: I Integer
! D real(psb_spk_)
! Z complex(psb_spk_)
! Basically the operation is as follows: on each process, we identify
! sections SND(Y) and RCV(Y); then we do a SEND(PACK(SND(Y)));
! then we receive, and we do an update with Y = UNPACK(RCV(Y)) + BETA * Y
! but only on the elements involved in the UNPACK operation.
! Thus: for halo data exchange, the receive section is confined in the
! halo indices, and BETA=0, whereas for overlap exchange the receive section
! is scattered in the owned indices, and BETA=1.
!
! Arguments:
! flag - integer Choose the algorithm for data exchange:
! this is chosen through bit fields.
! swap_mpi = iand(flag,psb_swap_mpi_) /= 0
! swap_sync = iand(flag,psb_swap_sync_) /= 0
! swap_send = iand(flag,psb_swap_send_) /= 0
! swap_recv = iand(flag,psb_swap_recv_) /= 0
! if (swap_mpi): use underlying MPI_ALLTOALLV.
! if (swap_sync): use PSB_SND and PSB_RCV in
! synchronized pairs
! if (swap_send .and. swap_recv): use mpi_irecv
! and mpi_send
! if (swap_send): use psb_snd (but need another
! call with swap_recv to complete)
! if (swap_recv): use psb_rcv (completing a
! previous call with swap_send)
!
!
! n - integer Number of columns in Y
! beta - X Choose overwrite or sum.
! y(:) - X The data area
! desc_a - type(psb_desc_type). The communication descriptor.
! work(:) - X Buffer space. If not sufficient, will do
! our own internal allocation.
! info - integer. return code.
! data - integer which list is to be used to exchange data
! default psb_comm_halo_
! psb_comm_halo_ use halo_index
! psb_comm_ext_ use ext_index
! psb_comm_ovrl_ use ovrl_index
! psb_comm_mov_ use ovr_mst_idx
!
!
subroutine psi_cswapdatav(flag,beta,y,desc_a,work,info,data)
use psi_mod, psb_protect_name => psi_cswapdatav
use psb_error_mod
use psb_descriptor_type
use psb_penv_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer, intent(in) :: flag
integer, intent(out) :: info
complex(psb_spk_) :: y(:), beta
complex(psb_spk_), target :: work(:)
type(psb_desc_type),target :: desc_a
integer, optional :: data
! locals
integer :: ictxt, np, me, icomm, idxs, idxr, totxch, data_, err_act
integer, pointer :: d_idx(:)
character(len=20) :: name
info = 0
name='psi_swap_datav'
call psb_erractionsave(err_act)
ictxt=psb_cd_get_context(desc_a)
call psb_info(ictxt,me,np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
if (.not.psb_is_asb_desc(desc_a)) then
info = 1122
call psb_errpush(info,name)
goto 9999
endif
icomm = psb_cd_get_mpic(desc_a)
if(present(data)) then
data_ = data
else
data_ = psb_comm_halo_
end if
call psb_cd_get_list(data_,desc_a,d_idx,totxch,idxr,idxs,info)
if (info /= 0) then
call psb_errpush(4001,name,a_err='psb_cd_get_list')
goto 9999
end if
call psi_swapdata(ictxt,icomm,flag,beta,y,d_idx,totxch,idxs,idxr,work,info)
if (info /= 0) goto 9999
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psi_cswapdatav
subroutine psi_cswapidxv(ictxt,icomm,flag,beta,y,idx,totxch,totsnd,totrcv,work,info)
use psi_mod, psb_protect_name => psi_cswapidxv
use psb_error_mod
use psb_descriptor_type
use psb_penv_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
integer, intent(in) :: ictxt,icomm,flag
integer, intent(out) :: info
complex(psb_spk_) :: y(:), beta
complex(psb_spk_), target :: work(:)
integer, intent(in) :: idx(:),totxch,totsnd, totrcv
! locals
integer :: np, me, nesd, nerv,&
& proc_to_comm, p2ptag, p2pstat(mpi_status_size),&
& iret, err_act, i, totsnd_, totrcv_,&
& idx_pt, snd_pt, rcv_pt, n, pnti, data_
integer, allocatable, dimension(:) :: bsdidx, brvidx,&
& sdsz, rvsz, prcid, rvhd, sdhd
integer :: int_err(5)
logical :: swap_mpi, swap_sync, swap_send, swap_recv,&
& albf,do_send,do_recv
logical, parameter :: usersend=.false.
complex(psb_spk_), pointer, dimension(:) :: sndbuf, rcvbuf
#ifdef HAVE_VOLATILE
volatile :: sndbuf, rcvbuf
#endif
character(len=20) :: name
info = 0
name='psi_swap_datav'
call psb_erractionsave(err_act)
call psb_info(ictxt,me,np)
if (np == -1) then
info = 2010
call psb_errpush(info,name)
goto 9999
endif
n=1
swap_mpi = iand(flag,psb_swap_mpi_) /= 0
swap_sync = iand(flag,psb_swap_sync_) /= 0
swap_send = iand(flag,psb_swap_send_) /= 0
swap_recv = iand(flag,psb_swap_recv_) /= 0
do_send = swap_mpi .or. swap_sync .or. swap_send
do_recv = swap_mpi .or. swap_sync .or. swap_recv
totrcv_ = totrcv * n
totsnd_ = totsnd * n
if (swap_mpi) then
allocate(sdsz(0:np-1), rvsz(0:np-1), bsdidx(0:np-1),&
& brvidx(0:np-1), rvhd(0:np-1), sdhd(0:np-1), prcid(0:np-1),&
& stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
rvhd(:) = mpi_request_null
sdsz(:) = 0
rvsz(:) = 0
! prepare info for communications
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
call psb_get_rank(prcid(proc_to_comm),ictxt,proc_to_comm)
brvidx(proc_to_comm) = rcv_pt
rvsz(proc_to_comm) = nerv
bsdidx(proc_to_comm) = snd_pt
sdsz(proc_to_comm) = nesd
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
else
allocate(rvhd(totxch),prcid(totxch),stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
end if
totrcv_ = max(totrcv_,1)
totsnd_ = max(totsnd_,1)
if((totrcv_+totsnd_) < size(work)) then
sndbuf => work(1:totsnd_)
rcvbuf => work(totsnd_+1:totsnd_+totrcv_)
albf=.false.
else
allocate(sndbuf(totsnd_),rcvbuf(totrcv_), stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
albf=.true.
end if
if (do_send) then
! Pack send buffers
pnti = 1
snd_pt = 1
do i=1, totxch
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
idx_pt = 1+pnti+nerv+psb_n_elem_send_
call psi_gth(nesd,idx(idx_pt:idx_pt+nesd-1),&
& y,sndbuf(snd_pt:snd_pt+nesd-1))
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
end if
! Case SWAP_MPI
if (swap_mpi) then
! swap elements using mpi_alltoallv
call mpi_alltoallv(sndbuf,sdsz,bsdidx,&
& mpi_complex,rcvbuf,rvsz,&
& brvidx,mpi_complex,icomm,iret)
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
else if (swap_sync) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (proc_to_comm < me) then
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+nesd-1), proc_to_comm)
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+nerv-1), proc_to_comm)
else if (proc_to_comm > me) then
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+nerv-1), proc_to_comm)
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+nesd-1), proc_to_comm)
else if (proc_to_comm == me) then
if (nesd /= nerv) then
write(0,*) 'Fatal error in swapdata: mismatch on self sendf',nerv,nesd
end if
rcvbuf(rcv_pt:rcv_pt+nerv-1) = sndbuf(snd_pt:snd_pt+nesd-1)
end if
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
else if (swap_send .and. swap_recv) then
! First I post all the non blocking receives
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
call psb_get_rank(prcid(i),ictxt,proc_to_comm)
if ((nerv>0).and.(proc_to_comm /= me)) then
p2ptag = krecvid(ictxt,proc_to_comm,me)
call mpi_irecv(rcvbuf(rcv_pt),nerv,&
& mpi_complex,prcid(i),&
& p2ptag, icomm,rvhd(i),iret)
end if
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
! Then I post all the blocking sends
if (usersend) call mpi_barrier(icomm,info)
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
p2ptag=ksendid(ictxt,proc_to_comm,me)
if ((nesd>0).and.(proc_to_comm /= me)) then
if (usersend) then
call mpi_rsend(sndbuf(snd_pt),nesd,&
& mpi_complex,prcid(i),&
& p2ptag,icomm,iret)
else
call mpi_send(sndbuf(snd_pt),nesd,&
& mpi_complex,prcid(i),&
& p2ptag,icomm,iret)
end if
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
end if
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
pnti = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
p2ptag = krecvid(ictxt,proc_to_comm,me)
if ((proc_to_comm /= me).and.(nerv>0)) then
call mpi_wait(rvhd(i),p2pstat,iret)
if(iret /= mpi_success) then
int_err(1) = iret
info=400
call psb_errpush(info,name,i_err=int_err)
goto 9999
end if
else if (proc_to_comm == me) then
if (nesd /= nerv) then
write(0,*) 'Fatal error in swapdata: mismatch on self sendf',nerv,nesd
end if
rcvbuf(rcv_pt:rcv_pt+nerv-1) = sndbuf(snd_pt:snd_pt+nesd-1)
end if
pnti = pnti + nerv + nesd + 3
end do
else if (swap_send) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (nesd>0) call psb_snd(ictxt,&
& sndbuf(snd_pt:snd_pt+nesd-1), proc_to_comm)
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
else if (swap_recv) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
if (nerv>0) call psb_rcv(ictxt,&
& rcvbuf(rcv_pt:rcv_pt+nerv-1), proc_to_comm)
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
end if
if (do_recv) then
pnti = 1
snd_pt = 1
rcv_pt = 1
do i=1, totxch
proc_to_comm = idx(pnti+psb_proc_id_)
nerv = idx(pnti+psb_n_elem_recv_)
nesd = idx(pnti+nerv+psb_n_elem_send_)
idx_pt = 1+pnti+psb_n_elem_recv_
call psi_sct(nerv,idx(idx_pt:idx_pt+nerv-1),&
& rcvbuf(rcv_pt:rcv_pt+nerv-1),beta,y)
rcv_pt = rcv_pt + nerv
snd_pt = snd_pt + nesd
pnti = pnti + nerv + nesd + 3
end do
end if
if (swap_mpi) then
deallocate(sdsz,rvsz,bsdidx,brvidx,rvhd,prcid,sdhd,&
& stat=info)
else
deallocate(rvhd,prcid,stat=info)
end if
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
if(albf) deallocate(sndbuf,rcvbuf,stat=info)
if(info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psi_cswapidxv