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400 lines
13 KiB
Fortran
400 lines
13 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 2.2
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!!$ (C) Copyright 2006/2007/2008
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the PSBLAS group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! File: psb_iovrl.f90
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!
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! Subroutine: psb_iovrlm
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! This subroutine performs the exchange of the overlap elements in a
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! distributed dense matrix between all the processes.
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!
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! Arguments:
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! x(:,:) - integer The local part of the dense matrix.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code.
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! jx - integer(optional). The starting column of the global matrix
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! ik - integer(optional). The number of columns to gather.
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! work - real(optional). A work area.
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! update - integer(optional). Type of update:
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! psb_none_ do nothing
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! psb_sum_ sum of overlaps
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! psb_avg_ average of overlaps
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! mode - integer(optional). 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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subroutine psb_iovrlm(x,desc_a,info,jx,ik,work,update,mode)
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use psb_descriptor_type
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use psb_const_mod
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use psi_mod
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use psb_realloc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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integer, intent(inout), target :: x(:,:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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integer, optional, target :: work(:)
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integer, intent(in), optional :: update,jx,ik,mode
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! locals
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integer :: ictxt, np, me, &
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& err_act, m, n, iix, jjx, ix, ijx, nrow, ncol, k, maxk, update_,&
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& mode_, err, liwork
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integer, pointer :: iwork(:), xp(:,:)
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logical :: do_swap
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_iovrlm'
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if(psb_get_errstatus() /= 0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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! check on blacs grid
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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if (present(jx)) then
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ijx = jx
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else
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ijx = 1
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endif
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m = psb_cd_get_global_rows(desc_a)
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n = psb_cd_get_global_cols(desc_a)
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nrow = psb_cd_get_local_rows(desc_a)
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ncol = psb_cd_get_local_cols(desc_a)
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maxk=size(x,2)-ijx+1
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if(present(ik)) then
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if(ik > maxk) then
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k=maxk
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else
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k=ik
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end if
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else
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k = maxk
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end if
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if (present(update)) then
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update_ = update
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else
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update_ = psb_avg_
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endif
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if (present(mode)) then
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mode_ = mode
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else
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mode_ = IOR(psb_swap_send_,psb_swap_recv_)
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endif
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do_swap = (mode_ /= 0)
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! check vector correctness
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call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx)
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if(info /= 0) then
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info=4010
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=3040
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call psb_errpush(info,name)
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end if
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err=info
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call psb_errcomm(ictxt,err)
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if(err /= 0) goto 9999
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! check for presence/size of a work area
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liwork=ncol
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if (present(work)) then
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if(size(work) >= liwork) then
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aliw=.false.
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else
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aliw=.true.
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end if
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else
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aliw=.true.
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end if
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if (aliw) then
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allocate(iwork(liwork),stat=info)
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if(info /= 0) then
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info=4010
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call psb_errpush(info,name,a_err='Allocate')
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goto 9999
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end if
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else
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iwork => work
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end if
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! exchange overlap elements
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if(do_swap) then
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xp => x(iix:size(x,1),jjx:jjx+k-1)
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call psi_swapdata(mode_,k,ione,xp,&
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& desc_a,iwork,info,data=psb_comm_ovr_)
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end if
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if (info == 0) call psi_ovrl_upd(xp,desc_a,update_,info)
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if (info /= 0) then
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call psb_errpush(4010,name,a_err='Inner updates')
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goto 9999
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end if
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if (aliw) deallocate(iwork)
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nullify(iwork)
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_iovrlm
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!!$
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!!$ Parallel Sparse BLAS version 2.2
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!!$ (C) Copyright 2006/2007/2008
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ Redistribution and use in source and binary forms, with or without
|
|
!!$ modification, are permitted provided that the following conditions
|
|
!!$ are met:
|
|
!!$ 1. Redistributions of source code must retain the above copyright
|
|
!!$ notice, this list of conditions and the following disclaimer.
|
|
!!$ 2. Redistributions in binary form must reproduce the above copyright
|
|
!!$ notice, this list of conditions, and the following disclaimer in the
|
|
!!$ documentation and/or other materials provided with the distribution.
|
|
!!$ 3. The name of the PSBLAS group or the names of its contributors may
|
|
!!$ not be used to endorse or promote products derived from this
|
|
!!$ software without specific written permission.
|
|
!!$
|
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
|
|
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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!!$ POSSIBILITY OF SUCH DAMAGE.
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|
!!$
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!!$
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!
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! Subroutine: psb_iovrlv
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! This subroutine performs the exchange of the overlap elements in a
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! distributed dense vector between all the processes.
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!
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! Arguments:
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! x(:) - integer The local part of the dense vector.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code.
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! work - real(optional). A work area.
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! update - integer(optional). Type of update:
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! psb_none_ do nothing
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! psb_sum_ sum of overlaps
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! psb_avg_ average of overlaps
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! mode - integer(optional). 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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!
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subroutine psb_iovrlv(x,desc_a,info,work,update,mode)
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use psb_descriptor_type
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use psi_mod
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use psb_const_mod
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use psb_realloc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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integer, intent(inout), target :: x(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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integer, optional, target :: work(:)
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integer, intent(in), optional :: update,mode
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! locals
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integer :: ictxt, np, me, &
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& err_act, m, n, iix, jjx, ix, ijx, nrow, ncol, k, update_,&
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& mode_, err, liwork
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integer,pointer :: iwork(:)
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logical :: do_swap
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_iovrlv'
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if(psb_get_errstatus() /= 0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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! check on blacs grid
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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ijx = 1
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m = psb_cd_get_global_rows(desc_a)
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n = psb_cd_get_global_cols(desc_a)
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nrow = psb_cd_get_local_rows(desc_a)
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ncol = psb_cd_get_local_cols(desc_a)
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k = 1
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if (present(update)) then
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update_ = update
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else
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update_ = psb_avg_
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endif
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if (present(mode)) then
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mode_ = mode
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else
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mode_ = IOR(psb_swap_send_,psb_swap_recv_)
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endif
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do_swap = (mode_ /= 0)
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! check vector correctness
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call psb_chkvect(m,1,size(x),ix,ijx,desc_a,info,iix,jjx)
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if(info /= 0) then
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info=4010
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=3040
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call psb_errpush(info,name)
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end if
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err=info
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call psb_errcomm(ictxt,err)
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if(err /= 0) goto 9999
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! check for presence/size of a work area
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liwork=ncol
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if (present(work)) then
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if(size(work) >= liwork) then
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aliw=.false.
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else
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aliw=.true.
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end if
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else
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aliw=.true.
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end if
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if (aliw) then
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allocate(iwork(liwork),stat=info)
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if(info /= 0) then
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info=4010
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call psb_errpush(info,name,a_err='Allocate')
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goto 9999
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end if
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else
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iwork => work
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end if
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! exchange overlap elements
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if (do_swap) then
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call psi_swapdata(mode_,ione,x(:),&
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& desc_a,iwork,info,data=psb_comm_ovr_)
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end if
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if (info == 0) call psi_ovrl_upd(x,desc_a,update_,info)
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if (info /= 0) then
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call psb_errpush(4010,name,a_err='Inner updates')
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goto 9999
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end if
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if (aliw) deallocate(iwork)
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nullify(iwork)
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_iovrlv
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