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988 lines
30 KiB
Fortran
988 lines
30 KiB
Fortran
! debug out-of-bound
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! #define DBG_OOB
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! debug personal
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! #define DBG_PER
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!
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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_dswapdata.F90
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!
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! Subroutine: psi_dswapdatam
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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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! 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 on (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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!
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!
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! Subroutine: psi_dswapdata_vect
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! Data exchange among processes.
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!
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! Takes care of Y an exanspulated vector.
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!
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!
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!
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subroutine psi_dswapdata_vect(flag,beta,y,desc_a,work,info,data)
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use psi_mod, psb_protect_name => psi_dswapdata_vect
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use psb_d_base_vect_mod
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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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#include "scorep/SCOREP_User.inc"
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integer(psb_ipk_), intent(in) :: flag
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integer(psb_ipk_), intent(out) :: info
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class(psb_d_base_vect_type) :: y
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real(psb_dpk_) :: beta
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real(psb_dpk_), 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, totxch, data_, err_act
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class(psb_i_base_vect_type), pointer :: d_vidx
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character(len=20) :: name
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logical :: swap_persistent, swap_nonpersistent, do_alltoallv
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info=psb_success_
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name='psi_swap_datav'
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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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! TODO: get_mpic should be used to get dist_graph_comm, but for now this works
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swap_persistent = iand(flag,psb_swap_persistent_) /= 0
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swap_nonpersistent = iand(flag,psb_swap_nonpersistent_) /= 0
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do_alltoallv = swap_persistent .or. swap_nonpersistent
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if (do_alltoallv) then
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if (allocated(desc_a%dist_graph_comm)) then
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! print *, "desc_a%dist_graph_comm", desc_a%dist_graph_comm
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icomm = desc_a%dist_graph_comm
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else
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print *, "ERROR: desc_a%dist_graph_comm not allocated but swap persistent flag passed"
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goto 9999
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end if
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end if
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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_vidx,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_swapdata(ictxt,icomm,flag,beta,y,d_vidx,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_dswapdata_vect
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!
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!
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! Subroutine: psi_dswap_vidx_vect
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! Data exchange among processes.
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!
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! Takes care of Y an exanspulated vector. Relies on the gather/scatter methods
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! of vectors.
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!
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! The real workhorse: the outer routine will only choose the index list
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! this one takes the index list and does the actual exchange.
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!
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!
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!
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subroutine psi_dswap_vidx_vect(iictxt,iicomm,flag,beta,y,idx, &
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& totxch,totsnd,totrcv,work,info)
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use psi_mod, psb_protect_name => psi_dswap_vidx_vect
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use psb_error_mod
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use psb_realloc_mod
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use psb_desc_mod
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use psb_penv_mod
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use psb_d_base_vect_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
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integer(psb_ipk_), intent(out) :: info
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class(psb_d_base_vect_type) :: y
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real(psb_dpk_) :: beta
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real(psb_dpk_), target :: work(:)
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class(psb_i_base_vect_type), intent(inout) :: idx
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integer(psb_ipk_), intent(in) :: 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 :: prcid(:)
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integer(psb_ipk_) :: nesd, nerv,&
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& err_act, i, j, ii, ri, si, idx_pt, totsnd_, totrcv_,&
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& snd_pt, rcv_pt, pnti, n, ierr
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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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do_alltoallv, swap_persistent, swap_nonpersistent
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logical, parameter :: usersend=.false., debug=.false.
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character(len=20) :: name
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!remove
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integer :: status(MPI_STATUS_SIZE)
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real(psb_dpk_) :: start_req_t, finish_req_t, start_comm_t, end_comm_t, &
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start_t, finish_t
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logical :: weight
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real(psb_dpk_) :: tmp
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! score-p declaration
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! SCOREP_USER_REGION_DEFINE( MPIX_Neighbor_alltoallv_init_region )
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! SCOREP_USER_REGION_DEFINE( artless_test )
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info=psb_success_
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name='psi_swap_datav'
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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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n=1
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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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swap_persistent = iand(flag,psb_swap_persistent_) /= 0
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swap_nonpersistent = iand(flag,psb_swap_nonpersistent_) /= 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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do_alltoallv = swap_persistent .or. swap_nonpersistent
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totrcv_ = totrcv * n
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totsnd_ = totsnd * n
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call idx%sync()
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! TODO check do_persistent twice, here and calling psi_dswapdata_vect,
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! redudent but needed for now
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if (do_alltoallv) then
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if (.not. allocated(y%p)) then
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allocate(y%p)
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end if
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start_t = MPI_Wtime()
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if (.not. allocated(y%p%sndbuf)) then
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! allocate time counters
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allocate(y%p%alltoall_comm_time, y%p%total_time)
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y%p%alltoall_comm_time = 0
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y%p%total_time = 0
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! allocate buffers
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allocate(y%p%sndbuf(totsnd), y%p%rcvbuf(totrcv))
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allocate(y%p%rcv_count, y%p%snd_count)
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! get number of neighbors and graph so we know who to communicate with
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call MPI_Dist_graph_neighbors_count(icomm, y%p%rcv_count, &
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y%p%snd_count, weight, ierr) ! should weight go into psb_d_persis_vect_type??
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allocate(y%p%rcv_from(y%p%rcv_count), y%p%rcv_ws(y%p%rcv_count))
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allocate(y%p%snd_to(y%p%snd_count), y%p%snd_ws(y%p%snd_count))
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call MPI_Dist_graph_neighbors(icomm, y%p%rcv_count, y%p%rcv_from, &
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y%p%rcv_ws, y%p%snd_count, y%p%snd_to, y%p%snd_ws, ierr)
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allocate(y%p%snd_counts(y%p%snd_count), y%p%rcv_counts(y%p%rcv_count), &
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y%p%snd_displs(y%p%snd_count), y%p%rcv_displs(y%p%rcv_count))
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y%p%snd_counts=0
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y%p%rcv_counts=0
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y%p%snd_displs=0
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y%p%rcv_displs=0
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si = 1 ! sndbuf index
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ri = 1
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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%v(pnti+psb_proc_id_)
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nerv = idx%v(pnti+psb_n_elem_recv_)
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nesd = idx%v(pnti+nerv+psb_n_elem_send_)
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idx_pt = 1+pnti+psb_n_elem_recv_
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snd_pt = 1+pnti+nerv+psb_n_elem_send_
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rcv_pt = 1+pnti+psb_n_elem_recv_
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! array of snd/rcv counts and displacements needed for request creation
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do ii=1, y%p%snd_count
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if (y%p%rcv_from(ii) == proc_to_comm) then
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y%p%rcv_counts(ii) = nerv
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y%p%rcv_displs(ii) = ri - 1
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end if
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if (y%p%snd_to(ii) == proc_to_comm) then
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y%p%snd_counts(ii) = nesd
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y%p%snd_displs(ii) = si - 1
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end if
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end do
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! pack sndbuf
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do ii=0,nesd-1
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y%p%sndbuf(si) = y%v(idx%v(ii+snd_pt))
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si = si + 1
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end do
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ri = ri + nerv
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pnti = pnti + nerv + nesd + 3
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end do
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! #ifdef DBG_PER
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! print *, me, ": totxch", totxch,"total to send", totsnd, "total to recv", totrcv
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! print *, me, ": rcv_count = ", y%p%rcv_count, "snd_count = ", y%p%snd_count
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! print *, me, ":y%p%snd_displs = ",y%p%snd_displs, &
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! "y%p%rcv_displs",y%p%rcv_displs
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! #endif
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! ----------------------------
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! print *, me, ": totsnd=",totsnd ,"y%p%snd_to =", y%p%snd_to, &
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! "y%p%snd_counts = ", y%p%snd_counts
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! print *, me, ": totrcv=",totrcv,"y%p%rcv_from =", y%p%rcv_from, &
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! "y%p%rcv_counts = ", y%p%rcv_counts
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! ----------------------------
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! ----------------------------
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! Persistant Request Creation
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! ----------------------------
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if (swap_persistent) then
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allocate(y%p%init_request)
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y%p%init_request = -1
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start_req_t = MPI_Wtime()
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call MPIX_Neighbor_alltoallv_init(y%p%sndbuf, y%p%snd_counts, y%p%snd_displs, &
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MPI_DOUBLE_PRECISION, y%p%rcvbuf, y%p%rcv_counts, y%p%rcv_displs, &
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MPI_DOUBLE_PRECISION, icomm, MPI_INFO_NULL, &
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y%p%init_request, ierr)
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finish_req_t = MPI_Wtime()
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allocate(y%p%request_create_time)
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y%p%request_create_time = finish_req_t - start_req_t
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end if
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! ----------------------------
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! if (ierr .ne. 0) then
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! print *, "ERROR: MPIX_Neighbor_alltoallvinit ierr = ", ierr
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! goto 9999
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! end if
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else ! send and recv buffers exist, need to pack send buffer
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si = 1 ! sndbuf index
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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%v(pnti+psb_proc_id_)
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nerv = idx%v(pnti+psb_n_elem_recv_)
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nesd = idx%v(pnti+nerv+psb_n_elem_send_)
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idx_pt = 1+pnti+psb_n_elem_recv_
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snd_pt = 1+pnti+nerv+psb_n_elem_send_
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rcv_pt = 1+pnti+psb_n_elem_recv_
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! pack sndbuf
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do ii=0,nesd-1
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y%p%sndbuf(si) = y%v(idx%v(ii+snd_pt))
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si = si + 1
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end do
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pnti = pnti + nerv + nesd + 3
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end do
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end if ! end packing phase
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! ---- start communication ----
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start_comm_t = MPI_Wtime()
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! ---- if persistant ----
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if (swap_persistent) then
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call MPI_Start(y%p%init_request, ierr)
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call MPI_Wait(y%p%init_request, status, ierr)
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end if
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! ---- if non-persistent ----
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if (swap_nonpersistent) then
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call MPI_Neighbor_alltoallv(y%p%sndbuf, y%p%snd_counts, y%p%snd_displs, &
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MPI_DOUBLE_PRECISION, y%p%rcvbuf, y%p%rcv_counts, y%p%rcv_displs, &
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MPI_DOUBLE_PRECISION, icomm, ierr)
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end if
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end_comm_t = MPI_Wtime() - start_comm_t
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y%p%alltoall_comm_time = y%p%alltoall_comm_time + end_comm_t
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! ----scatter/unpack buffer----
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pnti = 1
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rcv_pt = 1
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do i=1, totxch
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ri = 1
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proc_to_comm = idx%v(pnti+psb_proc_id_)
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nerv = idx%v(pnti+psb_n_elem_recv_)
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nesd = idx%v(pnti+nerv+psb_n_elem_send_)
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idx_pt = 1+pnti+psb_n_elem_recv_
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rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
|
|
do j=1, y%p%rcv_count
|
|
! make sure proc_to_comm is the rcv_from(j) so we get the right number
|
|
! of receive elements
|
|
if (proc_to_comm .eq. y%p%rcv_from(j)) then
|
|
if (nerv .ne. y%p%rcv_counts(j)) then
|
|
print *, me, ":Error: psi_dswapdata.F90:", &
|
|
"number of persistent elements received differs from nerv"
|
|
goto 9999
|
|
end if
|
|
|
|
do ii=0,nerv-1
|
|
y%v(idx%v(ii+rcv_pt)) = y%p%rcvbuf(ri + y%p%rcv_displs(j))
|
|
ri = ri + 1
|
|
end do
|
|
end if
|
|
end do
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
|
|
#ifdef DBG_PER
|
|
print*, me, ": end scatter/unpack buffer"
|
|
#endif
|
|
finish_t = MPI_Wtime()
|
|
y%p%total_time = y%p%total_time + finish_t - start_t
|
|
! print *, me,":ARTLESS total_time = ", y%p%total_time
|
|
end if ! ----- persistent communication is complete -----
|
|
|
|
|
|
if (debug) write(*,*) me,'Internal buffer'
|
|
if (do_send) then
|
|
if (allocated(y%comid)) then
|
|
if (any(y%comid /= mpi_request_null)) then
|
|
!
|
|
! Unfinished communication? Something is wrong....
|
|
!
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/-2/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
if (debug) write(*,*) me,'do_send start'
|
|
call y%new_buffer(ione*size(idx%v),info)
|
|
call y%new_comid(totxch,info)
|
|
y%comid = mpi_request_null
|
|
call psb_realloc(totxch,prcid,info)
|
|
! First I post all the non blocking receives
|
|
pnti = 1
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
|
|
rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
call psb_get_rank(prcid(i),ictxt,proc_to_comm)
|
|
if ((nerv>0).and.(proc_to_comm /= me)) then
|
|
if (debug) write(*,*) me,'Posting receive from',prcid(i),rcv_pt
|
|
p2ptag = psb_double_swap_tag
|
|
call mpi_irecv(y%combuf(rcv_pt),nerv,&
|
|
& psb_mpi_r_dpk_,prcid(i),&
|
|
& p2ptag, icomm,y%comid(i,2),iret)
|
|
end if
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
if (debug) write(*,*) me,' Gather '
|
|
!
|
|
! Then gather for sending.
|
|
!
|
|
pnti = 1
|
|
do i=1, totxch
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
snd_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
idx_pt = snd_pt
|
|
call y%gth(idx_pt,nesd,idx)
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
|
|
!
|
|
! Then wait
|
|
!
|
|
call y%device_wait()
|
|
|
|
if (debug) write(*,*) me,' isend'
|
|
!
|
|
! Then send
|
|
!
|
|
|
|
pnti = 1
|
|
snd_pt = 1
|
|
rcv_pt = 1
|
|
p2ptag = psb_double_swap_tag
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
snd_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
|
|
if ((nesd>0).and.(proc_to_comm /= me)) then
|
|
call mpi_isend(y%combuf(snd_pt),nesd,&
|
|
& psb_mpi_r_dpk_,prcid(i),&
|
|
& p2ptag,icomm,y%comid(i,1),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
|
|
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
end if
|
|
|
|
if (do_recv) then
|
|
if (debug) write(*,*) me,' do_Recv'
|
|
if (.not.allocated(y%comid)) then
|
|
!
|
|
! No matching send? Something is wrong....
|
|
!
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/-2/))
|
|
goto 9999
|
|
end if
|
|
call psb_realloc(totxch,prcid,info)
|
|
|
|
if (debug) write(*,*) me,' wait'
|
|
pnti = 1
|
|
p2ptag = psb_double_swap_tag
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
snd_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
|
|
if (proc_to_comm /= me)then
|
|
if (nesd>0) then
|
|
call mpi_wait(y%comid(i,1),p2pstat,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
if (nerv>0) then
|
|
call mpi_wait(y%comid(i,2),p2pstat,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
else if (proc_to_comm == me) then
|
|
if (nesd /= nerv) then
|
|
write(psb_err_unit,*) &
|
|
& 'Fatal error in swapdata: mismatch on self send',&
|
|
& nerv,nesd
|
|
end if
|
|
y%combuf(rcv_pt:rcv_pt+nerv-1) = y%combuf(snd_pt:snd_pt+nesd-1)
|
|
end if
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
|
|
if (debug) write(*,*) me,' scatter'
|
|
pnti = 1
|
|
snd_pt = 1
|
|
rcv_pt = 1
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
idx_pt = 1+pnti+psb_n_elem_recv_
|
|
snd_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
rcv_pt = 1+pnti+psb_n_elem_recv_
|
|
|
|
if (debug) write(0,*)me,' Received from: ',prcid(i),&
|
|
& y%combuf(rcv_pt:rcv_pt+nerv-1)
|
|
call y%sct(rcv_pt,nerv,idx,beta)
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
!
|
|
! Waited for everybody, clean up
|
|
!
|
|
y%comid = mpi_request_null
|
|
|
|
!
|
|
! Then wait for device
|
|
!
|
|
if (debug) write(*,*) me,' wait'
|
|
call y%device_wait()
|
|
if (debug) write(*,*) me,' free buffer'
|
|
call y%maybe_free_buffer(info)
|
|
if (info == 0) call y%free_comid(info)
|
|
if (info /= 0) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
if (debug) write(*,*) me,' done'
|
|
end if
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(iictxt,err_act)
|
|
|
|
return
|
|
end subroutine psi_dswap_vidx_vect
|
|
|
|
!
|
|
!
|
|
! Subroutine: psi_dswapdata_multivect
|
|
! Data exchange among processes.
|
|
!
|
|
! Takes care of Y an encaspulated vector.
|
|
!
|
|
!
|
|
subroutine psi_dswapdata_multivect(flag,beta,y,desc_a,work,info,data)
|
|
|
|
use psi_mod, psb_protect_name => psi_dswapdata_multivect
|
|
use psb_d_base_multivect_mod
|
|
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
|
|
class(psb_d_base_multivect_type) :: y
|
|
real(psb_dpk_) :: beta
|
|
real(psb_dpk_), 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, data_, err_act
|
|
class(psb_i_base_vect_type), pointer :: d_vidx
|
|
character(len=20) :: name
|
|
|
|
info=psb_success_
|
|
name='psi_swap_datav'
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt = desc_a%get_context()
|
|
icomm = desc_a%get_mpic()
|
|
call psb_info(ictxt,me,np)
|
|
print *, me, ": psi_dswapdata.F90:psi_dswapdata_multivect"
|
|
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_vidx,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_swapdata(ictxt,icomm,flag,beta,y,d_vidx,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_dswapdata_multivect
|
|
|
|
|
|
!
|
|
!
|
|
! Subroutine: psi_dswap_vidx_multivect
|
|
! Data exchange among processes.
|
|
!
|
|
! Takes care of Y an encapsulated multivector. Relies on the gather/scatter methods
|
|
! of multivectors.
|
|
!
|
|
! The real workhorse: the outer routine will only choose the index list
|
|
! this one takes the index list and does the actual exchange.
|
|
!
|
|
!
|
|
!
|
|
subroutine psi_dswap_vidx_multivect(iictxt,iicomm,flag,beta,y,idx, &
|
|
& totxch,totsnd,totrcv,work,info)
|
|
|
|
use psi_mod, psb_protect_name => psi_dswap_vidx_multivect
|
|
use psb_error_mod
|
|
use psb_realloc_mod
|
|
use psb_desc_mod
|
|
use psb_penv_mod
|
|
use psb_d_base_multivect_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
|
|
class(psb_d_base_multivect_type) :: y
|
|
real(psb_dpk_) :: beta
|
|
real(psb_dpk_), target :: work(:)
|
|
class(psb_i_base_vect_type), intent(inout) :: idx
|
|
integer(psb_ipk_), intent(in) :: totxch,totsnd, totrcv
|
|
|
|
! locals
|
|
integer(psb_mpk_) :: ictxt, icomm, np, me,&
|
|
& proc_to_comm, p2ptag, p2pstat(mpi_status_size), iret
|
|
integer(psb_mpk_), allocatable :: prcid(:)
|
|
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., debug=.false.
|
|
character(len=20) :: name
|
|
|
|
info=psb_success_
|
|
name='psi_swap_datav'
|
|
call psb_erractionsave(err_act)
|
|
ictxt = iictxt
|
|
icomm = iicomm
|
|
|
|
call psb_info(ictxt,me,np)
|
|
print *, me, ": psi_dswapdata.F90:psi_dswap_vidx_multivect"
|
|
if (np == -1) then
|
|
info=psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
n = y%get_ncols()
|
|
|
|
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
|
|
|
|
call idx%sync()
|
|
|
|
if (debug) write(*,*) me,'Internal buffer'
|
|
if (do_send) then
|
|
if (allocated(y%comid)) then
|
|
if (any(y%comid /= mpi_request_null)) then
|
|
!
|
|
! Unfinished communication? Something is wrong....
|
|
!
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/-2/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
if (debug) write(*,*) me,'do_send start'
|
|
call y%new_buffer(ione*size(idx%v),info)
|
|
call y%new_comid(totxch,info)
|
|
y%comid = mpi_request_null
|
|
call psb_realloc(totxch,prcid,info)
|
|
! First I post all the non blocking receives
|
|
pnti = 1
|
|
snd_pt = totrcv_+1
|
|
rcv_pt = 1
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
call psb_get_rank(prcid(i),ictxt,proc_to_comm)
|
|
if ((nerv>0).and.(proc_to_comm /= me)) then
|
|
if (debug) write(*,*) me,'Posting receive from',prcid(i),rcv_pt
|
|
p2ptag = psb_double_swap_tag
|
|
call mpi_irecv(y%combuf(rcv_pt),n*nerv,&
|
|
& psb_mpi_r_dpk_,prcid(i),&
|
|
& p2ptag, icomm,y%comid(i,2),iret)
|
|
end if
|
|
rcv_pt = rcv_pt + n*nerv
|
|
snd_pt = snd_pt + n*nesd
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
if (debug) write(*,*) me,' Gather '
|
|
!
|
|
! Then gather for sending.
|
|
!
|
|
pnti = 1
|
|
snd_pt = totrcv_+1
|
|
rcv_pt = 1
|
|
do i=1, totxch
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
idx_pt = 1+pnti+nerv+psb_n_elem_send_
|
|
call y%gth(idx_pt,snd_pt,nesd,idx)
|
|
rcv_pt = rcv_pt + n*nerv
|
|
snd_pt = snd_pt + n*nesd
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
|
|
!
|
|
! Then wait for device
|
|
!
|
|
call y%device_wait()
|
|
|
|
if (debug) write(*,*) me,' isend'
|
|
!
|
|
! Then send
|
|
!
|
|
|
|
pnti = 1
|
|
snd_pt = totrcv_+1
|
|
rcv_pt = 1
|
|
p2ptag = psb_double_swap_tag
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
|
|
if ((nesd>0).and.(proc_to_comm /= me)) then
|
|
call mpi_isend(y%combuf(snd_pt),n*nesd,&
|
|
& psb_mpi_r_dpk_,prcid(i),&
|
|
& p2ptag,icomm,y%comid(i,1),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
|
|
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
|
|
if (debug) write(*,*) me,' do_Recv'
|
|
if (.not.allocated(y%comid)) then
|
|
!
|
|
! No matching send? Something is wrong....
|
|
!
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/-2/))
|
|
goto 9999
|
|
end if
|
|
call psb_realloc(totxch,prcid,info)
|
|
|
|
if (debug) write(*,*) me,' wait'
|
|
pnti = 1
|
|
snd_pt = totrcv_+1
|
|
rcv_pt = 1
|
|
p2ptag = psb_double_swap_tag
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
if (proc_to_comm /= me)then
|
|
if (nesd>0) then
|
|
call mpi_wait(y%comid(i,1),p2pstat,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
if (nerv>0) then
|
|
call mpi_wait(y%comid(i,2),p2pstat,iret)
|
|
if(iret /= mpi_success) then
|
|
info=psb_err_mpi_error_
|
|
call psb_errpush(info,name,m_err=(/iret/))
|
|
goto 9999
|
|
end if
|
|
end if
|
|
else if (proc_to_comm == me) then
|
|
if (nesd /= nerv) then
|
|
write(psb_err_unit,*) &
|
|
& 'Fatal error in swapdata: mismatch on self send',&
|
|
& nerv,nesd
|
|
end if
|
|
y%combuf(rcv_pt:rcv_pt+n*nerv-1) = y%combuf(snd_pt:snd_pt+n*nesd-1)
|
|
end if
|
|
rcv_pt = rcv_pt + n*nerv
|
|
snd_pt = snd_pt + n*nesd
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
|
|
if (debug) write(*,*) me,' scatter'
|
|
pnti = 1
|
|
snd_pt = totrcv_+1
|
|
rcv_pt = 1
|
|
do i=1, totxch
|
|
proc_to_comm = idx%v(pnti+psb_proc_id_)
|
|
nerv = idx%v(pnti+psb_n_elem_recv_)
|
|
nesd = idx%v(pnti+nerv+psb_n_elem_send_)
|
|
idx_pt = 1+pnti+psb_n_elem_recv_
|
|
|
|
if (debug) write(0,*)me,' Received from: ',prcid(i),&
|
|
& y%combuf(rcv_pt:rcv_pt+n*nerv-1)
|
|
call y%sct(idx_pt,rcv_pt,nerv,idx,beta)
|
|
rcv_pt = rcv_pt + n*nerv
|
|
snd_pt = snd_pt + n*nesd
|
|
pnti = pnti + nerv + nesd + 3
|
|
end do
|
|
!
|
|
! Waited for com, cleanup comid
|
|
!
|
|
y%comid = mpi_request_null
|
|
|
|
!
|
|
! Then wait for device
|
|
!
|
|
if (debug) write(*,*) me,' wait'
|
|
call y%device_wait()
|
|
if (debug) write(*,*) me,' free buffer'
|
|
call y%free_buffer(info)
|
|
if (info == 0) call y%free_comid(info)
|
|
if (info /= 0) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name)
|
|
goto 9999
|
|
end if
|
|
if (debug) write(*,*) me,' done'
|
|
end if
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(iictxt,err_act)
|
|
|
|
return
|
|
end subroutine psi_dswap_vidx_multivect
|