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1005 lines
31 KiB
Fortran
1005 lines
31 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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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_eswaptran.F90
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!
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! Subroutine: psi_eswaptranm
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! Does the data exchange among processes. This is similar to Xswapdata, but
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! the list is read "in reverse", i.e. indices that are normally SENT are used
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! for the RECEIVE part and vice-versa. This is the basic data exchange operation
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! for doing the product of a sparse matrix by a vector.
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! Essentially this is doing a variable all-to-all data exchange
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! (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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! S real(psb_spk_)
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! D real(psb_dpk_)
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! C complex(psb_spk_)
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! Z complex(psb_dpk_)
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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_eswaptranm(flag,n,beta,y,desc_a,work,info,data)
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use psi_mod, psb_protect_name => psi_eswaptranm
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use psb_error_mod
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use psb_desc_mod
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use psb_penv_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(psb_ipk_), intent(in) :: flag, n
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integer(psb_ipk_), intent(out) :: info
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integer(psb_epk_) :: y(:,:), beta
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integer(psb_epk_), target :: work(:)
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type(psb_desc_type),target :: desc_a
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integer(psb_ipk_), optional :: data
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! locals
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integer(psb_ipk_) :: ictxt, np, me, icomm, idxs, idxr, err_act, totxch, data_
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integer(psb_ipk_), pointer :: d_idx(:)
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character(len=20) :: name
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info=psb_success_
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name='psi_swap_tran'
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call psb_erractionsave(err_act)
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ictxt = desc_a%get_context()
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icomm = desc_a%get_mpic()
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call psb_info(ictxt,me,np)
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if (np == -1) then
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info=psb_err_context_error_
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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=psb_err_invalid_cd_state_
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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(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 desc_a%get_list(data_,d_idx,totxch,idxr,idxs,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err='psb_cd_get_list')
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goto 9999
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end if
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call psi_swaptran(ictxt,icomm,flag,n,beta,y,d_idx,totxch,idxs,idxr,work,info)
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end subroutine psi_eswaptranm
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subroutine psi_etranidxm(iictxt,iicomm,flag,n,beta,y,idx,&
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& totxch,totsnd,totrcv,work,info)
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use psi_mod, psb_protect_name => psi_etranidxm
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use psb_error_mod
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use psb_desc_mod
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use psb_penv_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(psb_ipk_), intent(in) :: iictxt,iicomm,flag,n
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integer(psb_ipk_), intent(out) :: info
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integer(psb_epk_) :: y(:,:), beta
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integer(psb_epk_), target :: work(:)
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integer(psb_ipk_), intent(in) :: idx(:),totxch,totsnd, totrcv
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! locals
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integer(psb_mpk_) :: ictxt, icomm, np, me,&
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& proc_to_comm, p2ptag, p2pstat(mpi_status_size), iret
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integer(psb_mpk_), allocatable, dimension(:) :: bsdidx, brvidx,&
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& sdsz, rvsz, prcid, rvhd, sdhd
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integer(psb_ipk_) :: nesd, nerv,&
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& err_act, i, idx_pt, totsnd_, totrcv_,&
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& snd_pt, rcv_pt, pnti
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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(psb_epk_), pointer, dimension(:) :: sndbuf, rcvbuf
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#ifdef HAVE_VOLATILE
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volatile :: sndbuf, rcvbuf
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#endif
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character(len=20) :: name
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info=psb_success_
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name='psi_swap_tran'
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call psb_erractionsave(err_act)
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ictxt = iictxt
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icomm = iicomm
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call psb_info(ictxt,me,np)
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if (np == -1) then
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info=psb_err_context_error_
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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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totrcv_ = totrcv * n
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totsnd_ = totsnd * 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 /= psb_success_) then
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call psb_errpush(psb_err_alloc_dealloc_,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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = 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 /= psb_success_) then
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call psb_errpush(psb_err_alloc_dealloc_,name)
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goto 9999
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end if
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end if
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totrcv_ = max(totrcv_,1)
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totsnd_ = max(totsnd_,1)
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if((totrcv_+totsnd_) < size(work)) then
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sndbuf => work(1:totsnd_)
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rcvbuf => work(totsnd_+1:totsnd_+totrcv_)
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albf=.false.
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else
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allocate(sndbuf(totsnd_),rcvbuf(totrcv_), stat=info)
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if(info /= psb_success_) then
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call psb_errpush(psb_err_alloc_dealloc_,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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rcv_pt = 1
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do i=1, totxch
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proc_to_comm = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = 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_gth(nerv,n,idx(idx_pt:idx_pt+nerv-1),&
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& y,rcvbuf(rcv_pt:rcv_pt+n*nerv-1))
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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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! 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(rcvbuf,rvsz,brvidx,&
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& psb_mpi_epk_,&
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& sndbuf,sdsz,bsdidx,psb_mpi_epk_,icomm,iret)
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if(iret /= mpi_success) then
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info=psb_err_mpi_error_
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call psb_errpush(info,name,m_err=(/iret/))
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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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = idx(pnti+nerv+psb_n_elem_send_)
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if (proc_to_comm < me) then
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if (nerv>0) call psb_snd(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_rcv(ictxt,&
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& sndbuf(snd_pt:snd_pt+n*nesd-1), proc_to_comm)
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else if (proc_to_comm > me) then
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if (nesd>0) call psb_rcv(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_snd(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 (nesd /= nerv) then
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write(psb_err_unit,*) &
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& 'Fatal error in swaptran: mismatch on self send', &
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& nerv,nesd
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end if
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sndbuf(snd_pt:snd_pt+n*nesd-1) = rcvbuf(rcv_pt:rcv_pt+n*nerv-1)
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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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = 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 ((nesd>0).and.(proc_to_comm /= me)) then
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p2ptag = psb_int8_swap_tag
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call mpi_irecv(sndbuf(snd_pt),n*nesd,&
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& psb_mpi_epk_,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,iret)
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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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = idx(pnti+nerv+psb_n_elem_send_)
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if ((nerv>0).and.(proc_to_comm /= me)) then
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p2ptag = psb_int8_swap_tag
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if (usersend) then
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call mpi_rsend(rcvbuf(rcv_pt),n*nerv,&
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& psb_mpi_epk_,prcid(i),&
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& p2ptag,icomm,iret)
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else
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call mpi_send(rcvbuf(rcv_pt),n*nerv,&
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& psb_mpi_epk_,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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info=psb_err_mpi_error_
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call psb_errpush(info,name,m_err=(/iret/))
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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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = idx(pnti+nerv+psb_n_elem_send_)
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p2ptag = psb_int8_swap_tag
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if ((proc_to_comm /= me).and.(nesd>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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info=psb_err_mpi_error_
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call psb_errpush(info,name,m_err=(/iret/))
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goto 9999
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end if
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else if (proc_to_comm == me) then
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if (nesd /= nerv) then
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write(psb_err_unit,*) &
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& 'Fatal error in swaptran: mismatch on self send',&
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& nerv,nesd
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end if
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sndbuf(snd_pt:snd_pt+n*nesd-1) = rcvbuf(rcv_pt:rcv_pt+n*nerv-1)
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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 = idx(pnti+psb_proc_id_)
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nerv = idx(pnti+psb_n_elem_recv_)
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nesd = idx(pnti+nerv+psb_n_elem_send_)
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if (nerv>0) call psb_snd(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
|
|
|
|
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 (nesd>0) call psb_rcv(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
|
|
|
|
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+nerv+psb_n_elem_send_
|
|
call psi_sct(nesd,n,idx(idx_pt:idx_pt+nesd-1),&
|
|
& sndbuf(snd_pt:snd_pt+n*nesd-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 /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
if(albf) deallocate(sndbuf,rcvbuf,stat=info)
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(iictxt,err_act)
|
|
|
|
return
|
|
end subroutine psi_etranidxm
|
|
!
|
|
!
|
|
! Subroutine: psi_eswaptranv
|
|
! Does the data exchange among processes. This is similar to Xswapdata, but
|
|
! the list is read "in reverse", i.e. indices that are normally SENT are used
|
|
! for the RECEIVE part and vice-versa. This is the basic data exchange operation
|
|
! for doing the product of a sparse matrix by a vector.
|
|
! 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
|
|
! S real(psb_spk_)
|
|
! D real(psb_dpk_)
|
|
! C complex(psb_spk_)
|
|
! Z complex(psb_dpk_)
|
|
! 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_eswaptranv(flag,beta,y,desc_a,work,info,data)
|
|
|
|
use psi_mod, psb_protect_name => psi_eswaptranv
|
|
use psb_error_mod
|
|
use psb_desc_mod
|
|
use psb_penv_mod
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
|
|
integer(psb_ipk_), intent(in) :: flag
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_epk_) :: y(:), beta
|
|
integer(psb_epk_), target :: work(:)
|
|
type(psb_desc_type),target :: desc_a
|
|
integer(psb_ipk_), optional :: data
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, icomm, idxs, idxr, totxch, err_act, data_
|
|
integer(psb_ipk_), pointer :: d_idx(:)
|
|
character(len=20) :: name
|
|
|
|
info=psb_success_
|
|
name='psi_swap_tranv'
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt = desc_a%get_context()
|
|
icomm = desc_a%get_mpic()
|
|
call psb_info(ictxt,me,np)
|
|
if (np == -1) then
|
|
info=psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
if (.not.psb_is_asb_desc(desc_a)) then
|
|
info=psb_err_invalid_cd_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
if (present(data)) then
|
|
data_ = data
|
|
else
|
|
data_ = psb_comm_halo_
|
|
end if
|
|
|
|
call desc_a%get_list(data_,d_idx,totxch,idxr,idxs,info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='psb_cd_get_list')
|
|
goto 9999
|
|
end if
|
|
|
|
call psi_swaptran(ictxt,icomm,flag,beta,y,d_idx,totxch,idxs,idxr,work,info)
|
|
if (info /= psb_success_) goto 9999
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
end subroutine psi_eswaptranv
|
|
|
|
|
|
!
|
|
!
|
|
! Subroutine: psi_etranidxv
|
|
! Does the data exchange among processes.
|
|
!
|
|
! The real workhorse: the outer routines will only choose the index list
|
|
! this one takes the index list and does the actual exchange.
|
|
!
|
|
!
|
|
!
|
|
subroutine psi_etranidxv(iictxt,iicomm,flag,beta,y,idx,&
|
|
& totxch,totsnd,totrcv,work,info)
|
|
|
|
use psi_mod, psb_protect_name => psi_etranidxv
|
|
use psb_error_mod
|
|
use psb_desc_mod
|
|
use psb_penv_mod
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
|
|
integer(psb_ipk_), intent(in) :: iictxt,iicomm,flag
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_epk_) :: y(:), beta
|
|
integer(psb_epk_), target :: work(:)
|
|
integer(psb_ipk_), intent(in) :: idx(:),totxch,totsnd, totrcv
|
|
|
|
! locals
|
|
integer(psb_mpk_) :: ictxt, icomm, np, me,&
|
|
& proc_to_comm, p2ptag, p2pstat(mpi_status_size), iret
|
|
integer(psb_mpk_), allocatable, dimension(:) :: bsdidx, brvidx,&
|
|
& sdsz, rvsz, prcid, rvhd, sdhd
|
|
integer(psb_ipk_) :: nesd, nerv,&
|
|
& err_act, i, idx_pt, totsnd_, totrcv_,&
|
|
& snd_pt, rcv_pt, pnti, n
|
|
logical :: swap_mpi, swap_sync, swap_send, swap_recv,&
|
|
& albf,do_send,do_recv
|
|
logical, parameter :: usersend=.false.
|
|
|
|
integer(psb_epk_), pointer, dimension(:) :: sndbuf, rcvbuf
|
|
#ifdef HAVE_VOLATILE
|
|
volatile :: sndbuf, rcvbuf
|
|
#endif
|
|
character(len=20) :: name
|
|
|
|
info=psb_success_
|
|
name='psi_swap_tran'
|
|
call psb_erractionsave(err_act)
|
|
ictxt = iictxt
|
|
icomm = iicomm
|
|
|
|
call psb_info(ictxt,me,np)
|
|
if (np == -1) then
|
|
info=psb_err_context_error_
|
|
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 /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,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 /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,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 /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
albf=.true.
|
|
end if
|
|
|
|
|
|
if (do_send) then
|
|
|
|
! Pack send buffers
|
|
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_gth(nerv,idx(idx_pt:idx_pt+nerv-1),&
|
|
& y,rcvbuf(rcv_pt:rcv_pt+nerv-1))
|
|
|
|
rcv_pt = rcv_pt + nerv
|
|
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(rcvbuf,rvsz,brvidx,&
|
|
& psb_mpi_epk_,&
|
|
& sndbuf,sdsz,bsdidx,psb_mpi_epk_,icomm,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
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 (nerv>0) call psb_snd(ictxt,&
|
|
& rcvbuf(rcv_pt:rcv_pt+nerv-1), proc_to_comm)
|
|
if (nesd>0) call psb_rcv(ictxt,&
|
|
& sndbuf(snd_pt:snd_pt+nesd-1), proc_to_comm)
|
|
else if (proc_to_comm > me) then
|
|
if (nesd>0) call psb_rcv(ictxt,&
|
|
& sndbuf(snd_pt:snd_pt+nesd-1), proc_to_comm)
|
|
if (nerv>0) call psb_snd(ictxt,&
|
|
& rcvbuf(rcv_pt:rcv_pt+nerv-1), proc_to_comm)
|
|
else if (proc_to_comm == me) then
|
|
if (nesd /= nerv) then
|
|
write(psb_err_unit,*) &
|
|
& 'Fatal error in swaptran: mismatch on self send', &
|
|
& nerv,nesd
|
|
end if
|
|
sndbuf(snd_pt:snd_pt+nesd-1) = rcvbuf(rcv_pt:rcv_pt+nerv-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 ((nesd>0).and.(proc_to_comm /= me)) then
|
|
p2ptag = psb_int8_swap_tag
|
|
call mpi_irecv(sndbuf(snd_pt),nesd,&
|
|
& psb_mpi_epk_,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,iret)
|
|
|
|
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).and.(proc_to_comm /= me)) then
|
|
p2ptag = psb_int8_swap_tag
|
|
if (usersend) then
|
|
call mpi_rsend(rcvbuf(rcv_pt),nerv,&
|
|
& psb_mpi_epk_,prcid(i),&
|
|
& p2ptag, icomm,iret)
|
|
else
|
|
call mpi_send(rcvbuf(rcv_pt),nerv,&
|
|
& psb_mpi_epk_,prcid(i),&
|
|
& p2ptag, icomm,iret)
|
|
end if
|
|
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
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 = psb_int8_swap_tag
|
|
|
|
if ((proc_to_comm /= me).and.(nesd>0)) then
|
|
call mpi_wait(rvhd(i),p2pstat,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
goto 9999
|
|
end if
|
|
else if (proc_to_comm == me) then
|
|
if (nesd /= nerv) then
|
|
write(psb_err_unit,*) &
|
|
& 'Fatal error in swaptran: mismatch on self send', &
|
|
& nerv,nesd
|
|
end if
|
|
sndbuf(snd_pt:snd_pt+nesd-1) = rcvbuf(rcv_pt:rcv_pt+nerv-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 (nerv>0) call psb_snd(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
|
|
|
|
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 (nesd>0) call psb_rcv(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
|
|
|
|
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+nerv+psb_n_elem_send_
|
|
call psi_sct(nesd,idx(idx_pt:idx_pt+nesd-1),&
|
|
& sndbuf(snd_pt:snd_pt+nesd-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 /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
if(albf) deallocate(sndbuf,rcvbuf,stat=info)
|
|
if(info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(iictxt,err_act)
|
|
|
|
return
|
|
end subroutine psi_etranidxv
|