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906 lines
28 KiB
Fortran
906 lines
28 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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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 PSBLAS 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 PSBLAS 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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!
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! File: psi_iswapdata.F90
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!
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! Subroutine: psi_iswapdatam
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! Does the data exchange among processes. Essentially this is doing
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! a variable all-to-all data exchange (ALLTOALLV in MPI parlance), but
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! it is capable of pruning empty exchanges, which are very likely in out
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! application environment. All the variants have the same structure
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! In all these subroutines X may be: I Integer
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! D real(kind(1.d0))
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! Z complex(kind(1.d0))
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! Basically the operation is as follows: on each process, we identify
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! sections SND(Y) and RCV(Y); then we do a SEND(PACK(SND(Y)));
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! then we receive, and we do an update with Y = UNPACK(RCV(Y)) + BETA * Y
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! but only on the elements involved in the UNPACK operation.
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! Thus: for halo data exchange, the receive section is confined in the
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! halo indices, and BETA=0, whereas for overlap exchange the receive section
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! is scattered in the owned indices, and BETA=1.
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!
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! Arguments:
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! flag - integer Choose the algorithm for data exchange:
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! this is chosen through bit fields.
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! swap_mpi = iand(flag,psb_swap_mpi_) /= 0
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! swap_sync = iand(flag,psb_swap_sync_) /= 0
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! swap_send = iand(flag,psb_swap_send_) /= 0
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! swap_recv = iand(flag,psb_swap_recv_) /= 0
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! if (swap_mpi): use underlying MPI_ALLTOALLV.
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! if (swap_sync): use PSB_SND and PSB_RCV in
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! synchronized pairs
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! if (swap_send .and. swap_recv): use mpi_irecv
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! and mpi_send
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! if (swap_send): use psb_snd (but need another
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! call with swap_recv to complete)
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! if (swap_recv): use psb_rcv (completing a
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! previous call with swap_send)
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!
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!
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! n - integer Number of columns in Y
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! beta - X Choose overwrite or sum.
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! y(:,:) - X The data area
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! desc_a - type(psb_desc_type). The communication descriptor.
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! work(:) - X Buffer space. If not sufficient, will do
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! our own internal allocation.
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! info - integer. return code.
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! data - integer which list is to be used to exchange data
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! default psb_comm_halo_
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! psb_comm_halo_ use halo_index
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! psb_comm_ext_ use ext_index
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! psb_comm_ovrl_ use ovrl_index
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! psb_comm_mov_ use ovr_mst_idx
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!
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!
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subroutine psi_iswapdatam(flag,n,beta,y,desc_a,work,info,data)
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use psi_mod, psb_protect_name => psi_iswapdatam
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use psb_error_mod
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use psb_descriptor_type
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use psb_penv_mod
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!!$ use psi_gthsct_mod
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer, intent(in) :: flag, n
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integer, intent(out) :: info
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integer :: y(:,:), beta
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integer, target :: work(:)
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type(psb_desc_type),target :: desc_a
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integer, optional :: data
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! locals
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integer :: ictxt, np, me, nesd, nerv,&
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& proc_to_comm, p2ptag, icomm, p2pstat(mpi_status_size),&
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& idxs, idxr, iret, err_act, totxch, i, idx_pt,&
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& snd_pt, rcv_pt, pnti, data_
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integer, allocatable, dimension(:) :: bsdidx, brvidx,&
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& sdsz, rvsz, prcid, rvhd, sdhd
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integer, pointer :: d_idx(:)
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integer :: int_err(5)
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logical :: swap_mpi, swap_sync, swap_send, swap_recv,&
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& albf,do_send,do_recv
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logical, parameter :: usersend=.false.
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integer, pointer, dimension(:) :: sndbuf, rcvbuf
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character(len=20) :: name
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info = 0
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name='psi_swap_data'
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call psb_erractionsave(err_act)
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ictxt = psb_cd_get_context(desc_a)
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icomm = psb_cd_get_mpic(desc_a)
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call psb_info(ictxt,me,np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.psb_is_asb_desc(desc_a)) then
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info = 1122
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call psb_errpush(info,name)
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goto 9999
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endif
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swap_mpi = iand(flag,psb_swap_mpi_) /= 0
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swap_sync = iand(flag,psb_swap_sync_) /= 0
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swap_send = iand(flag,psb_swap_send_) /= 0
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swap_recv = iand(flag,psb_swap_recv_) /= 0
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do_send = swap_mpi .or. swap_sync .or. swap_send
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do_recv = swap_mpi .or. swap_sync .or. swap_recv
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if(present(data)) then
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data_ = data
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else
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data_ = psb_comm_halo_
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end if
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call psb_cd_get_list(data_,desc_a,d_idx,totxch,idxr,idxs,info)
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if (info /= 0) then
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call psb_errpush(4001,name,a_err='psb_cd_get_list')
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goto 9999
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end if
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idxr = idxr * n
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idxs = idxs * n
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if (swap_mpi) then
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allocate(sdsz(0:np-1), rvsz(0:np-1), bsdidx(0:np-1),&
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& brvidx(0:np-1), rvhd(0:np-1), sdhd(0:np-1), prcid(0:np-1),&
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& stat=info)
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if(info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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rvhd(:) = mpi_request_null
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sdsz(:) = 0
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rvsz(:) = 0
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! prepare info for communications
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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call psb_get_rank(prcid(proc_to_comm),ictxt,proc_to_comm)
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brvidx(proc_to_comm) = rcv_pt
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rvsz(proc_to_comm) = n*nerv
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bsdidx(proc_to_comm) = snd_pt
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sdsz(proc_to_comm) = n*nesd
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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else
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allocate(rvhd(totxch),prcid(totxch),stat=info)
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if(info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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end if
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idxr = max(idxr,1)
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idxs = max(idxs,1)
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if((idxr+idxs) < size(work)) then
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sndbuf => work(1:idxs)
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rcvbuf => work(idxs+1:idxs+idxr)
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albf=.false.
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else
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allocate(sndbuf(idxs),rcvbuf(idxr), stat=info)
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if(info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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albf=.true.
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end if
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if (do_send) then
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! Pack send buffers
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pnti = 1
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snd_pt = 1
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do i=1, totxch
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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idx_pt = 1+pnti+nerv+psb_n_elem_send_
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call psi_gth(nesd,n,d_idx(idx_pt:idx_pt+nesd-1),&
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& y,sndbuf(snd_pt:snd_pt+n*nesd-1))
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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end if
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! Case SWAP_MPI
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if (swap_mpi) then
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! swap elements using mpi_alltoallv
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call mpi_alltoallv(sndbuf,sdsz,bsdidx,&
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& mpi_integer,rcvbuf,rvsz,&
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& brvidx,mpi_integer,icomm,iret)
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if(iret /= mpi_success) then
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int_err(1) = iret
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info=400
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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else if (swap_sync) then
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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if (proc_to_comm < me) then
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if (nesd>0) call psb_snd(ictxt,&
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& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
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if (nerv>0) call psb_rcv(ictxt,&
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& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
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else if (proc_to_comm > me) then
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if (nerv>0) call psb_rcv(ictxt,&
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& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
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if (nesd>0) call psb_snd(ictxt,&
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& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
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end if
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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else if (swap_send .and. swap_recv) then
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! First I post all the non blocking receives
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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call psb_get_rank(prcid(i),ictxt,proc_to_comm)
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if (nerv>0) then
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p2ptag = krecvid(ictxt,proc_to_comm,me)
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call mpi_irecv(rcvbuf(rcv_pt),n*nerv,&
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& mpi_integer,prcid(i),&
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& p2ptag, icomm,rvhd(i),iret)
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end if
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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! Then I post all the blocking sends
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if (usersend) call mpi_barrier(icomm,info)
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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p2ptag=ksendid(ictxt,proc_to_comm,me)
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if (nesd>0) then
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if (usersend) then
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call mpi_rsend(sndbuf(snd_pt),n*nesd,&
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& mpi_integer,prcid(i),&
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& p2ptag,icomm,iret)
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else
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call mpi_send(sndbuf(snd_pt),n*nesd,&
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& mpi_integer,prcid(i),&
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& p2ptag,icomm,iret)
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end if
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if(iret /= mpi_success) then
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int_err(1) = iret
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info=400
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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end if
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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pnti = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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p2ptag = krecvid(ictxt,proc_to_comm,me)
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if ((proc_to_comm /= me).and.(nerv>0)) then
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call mpi_wait(rvhd(i),p2pstat,iret)
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if(iret /= mpi_success) then
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int_err(1) = iret
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info=400
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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end if
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pnti = pnti + nerv + nesd + 3
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end do
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else if (swap_send) then
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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if (nesd>0) call psb_snd(ictxt,&
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& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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else if (swap_recv) then
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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if (nerv>0) call psb_rcv(ictxt,&
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& rcvbuf(rcv_pt:rcv_pt+n*nerv-1), proc_to_comm)
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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end if
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if (do_recv) then
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pnti = 1
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snd_pt = 1
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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = d_idx(pnti+psb_proc_id_)
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nerv = d_idx(pnti+psb_n_elem_recv_)
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nesd = d_idx(pnti+nerv+psb_n_elem_send_)
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idx_pt = 1+pnti+psb_n_elem_recv_
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call psi_sct(nerv,n,d_idx(idx_pt:idx_pt+nerv-1),&
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& rcvbuf(rcv_pt:rcv_pt+n*nerv-1),beta,y)
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rcv_pt = rcv_pt + n*nerv
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snd_pt = snd_pt + n*nesd
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pnti = pnti + nerv + nesd + 3
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end do
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end if
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if (swap_mpi) then
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deallocate(sdsz,rvsz,bsdidx,brvidx,rvhd,prcid,sdhd,&
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& stat=info)
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else
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deallocate(rvhd,prcid,stat=info)
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end if
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if(info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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if(albf) deallocate(sndbuf,rcvbuf,stat=info)
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if(info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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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(ictxt)
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return
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end if
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return
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end subroutine psi_iswapdatam
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!!$
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!!$ Parallel Sparse BLAS v2.0
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|
!!$ (C) Copyright 2006 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.
|
|
!!$
|
|
!!$
|
|
!
|
|
!
|
|
! Subroutine: psi_iswapdatav
|
|
! 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(kind(1.d0))
|
|
! Z complex(kind(1.d0))
|
|
! 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_iswapdatav(flag,beta,y,desc_a,work,info,data)
|
|
|
|
use psi_mod, psb_protect_name => psi_iswapdatav
|
|
use psb_error_mod
|
|
use psb_descriptor_type
|
|
use psb_penv_mod
|
|
!!$ use psi_gthsct_mod
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
|
|
integer, intent(in) :: flag
|
|
integer, intent(out) :: info
|
|
integer :: y(:), beta
|
|
integer, target :: work(:)
|
|
type(psb_desc_type),target :: desc_a
|
|
integer, optional :: data
|
|
|
|
! locals
|
|
integer :: ictxt, np, me, nesd, nerv,&
|
|
& proc_to_comm, p2ptag, icomm, p2pstat(mpi_status_size),&
|
|
& idxs, idxr, iret, err_act, totxch, i, &
|
|
& idx_pt, snd_pt, rcv_pt, n, pnti, data_
|
|
|
|
integer, allocatable, dimension(:) :: bsdidx, brvidx,&
|
|
& sdsz, rvsz, prcid, rvhd, sdhd
|
|
integer, pointer :: d_idx(:)
|
|
integer :: int_err(5)
|
|
logical :: swap_mpi, swap_sync, swap_send, swap_recv,&
|
|
& albf,do_send,do_recv
|
|
logical, parameter :: usersend=.false.
|
|
|
|
integer, pointer, dimension(:) :: sndbuf, rcvbuf
|
|
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 = desc_a%matrix_data(psb_mpi_c_)
|
|
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
|
|
|
|
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
|
|
|
|
idxr = idxr * n
|
|
idxs = idxs * 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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_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
|
|
|
|
|
|
idxr = max(idxr,1)
|
|
idxs = max(idxs,1)
|
|
if((idxr+idxs) < size(work)) then
|
|
sndbuf => work(1:idxs)
|
|
rcvbuf => work(idxs+1:idxs+idxr)
|
|
albf=.false.
|
|
else
|
|
allocate(sndbuf(idxs),rcvbuf(idxr), 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 = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_idx(pnti+nerv+psb_n_elem_send_)
|
|
idx_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
call psi_gth(nesd,d_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_integer,rcvbuf,rvsz,&
|
|
& brvidx,mpi_integer,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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_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)
|
|
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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_idx(pnti+nerv+psb_n_elem_send_)
|
|
|
|
call psb_get_rank(prcid(i),ictxt,proc_to_comm)
|
|
if (nerv>0) then
|
|
p2ptag = krecvid(ictxt,proc_to_comm,me)
|
|
call mpi_irecv(rcvbuf(rcv_pt),nerv,&
|
|
& mpi_integer,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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_idx(pnti+nerv+psb_n_elem_send_)
|
|
|
|
p2ptag=ksendid(ictxt,proc_to_comm,me)
|
|
|
|
if (nesd>0) then
|
|
if (usersend) then
|
|
call mpi_rsend(sndbuf(snd_pt),nesd,&
|
|
& mpi_integer,prcid(i),&
|
|
& p2ptag,icomm,iret)
|
|
else
|
|
call mpi_send(sndbuf(snd_pt),nesd,&
|
|
& mpi_integer,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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_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
|
|
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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_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 = d_idx(pnti+psb_proc_id_)
|
|
nerv = d_idx(pnti+psb_n_elem_recv_)
|
|
nesd = d_idx(pnti+nerv+psb_n_elem_send_)
|
|
idx_pt = 1+pnti+psb_n_elem_recv_
|
|
call psi_sct(nerv,d_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_iswapdatav
|