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