! ! Parallel Sparse BLAS version 3.5 ! (C) Copyright 2006-2018 ! Salvatore Filippone ! Alfredo Buttari ! ! 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_shalo.f90 ! ! Subroutine: psb_shalom ! This subroutine performs the exchange of the halo elements in a ! distributed dense matrix between all the processes. ! ! Arguments: ! x - real,dimension(:,:). 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). Work area. ! tran - character(optional). Transpose exchange. ! mode - integer(optional). Communication mode (see Swapdata) ! data - integer Which index list in desc_a should be used ! to retrieve rows, 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 psb_shalom(x,desc_a,info,jx,ik,work,tran,mode,data) use psb_base_mod, psb_protect_name => psb_shalom use psi_mod implicit none real(psb_spk_), intent(inout), target :: x(:,:) type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info real(psb_spk_), optional, target, intent(inout) :: work(:) integer(psb_ipk_), intent(in), optional :: mode,jx,ik,data character, intent(in), optional :: tran ! locals integer(psb_mpk_) :: ictxt, np, me integer(psb_ipk_) :: err_act, iix, jjx, k, maxk, nrow, imode, i,& & err, liwork,data_, ldx integer(psb_lpk_) :: m, n, ix, ijx real(psb_spk_),pointer :: iwork(:), xp(:,:) character :: tran_ character(len=20) :: name, ch_err logical :: aliw name='psb_shalom' info=psb_success_ call psb_erractionsave(err_act) if (psb_errstatus_fatal()) then info = psb_err_internal_error_ ; goto 9999 end if ictxt=desc_a%get_context() ! check on blacs grid call psb_info(ictxt, me, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif ix = 1 if (present(jx)) then ijx = jx else ijx = 1 endif m = desc_a%get_global_rows() n = desc_a%get_global_cols() nrow = desc_a%get_local_rows() 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(tran)) then tran_ = psb_toupper(tran) else tran_ = 'N' endif if (present(mode)) then imode = mode else imode = IOR(psb_swap_send_,psb_swap_recv_) endif if (present(data)) then data_ = data else data_ = psb_comm_halo_ endif ldx = size(x,1) ! check vector correctness call psb_chkvect(m,lone,ldx,ix,ijx,desc_a,info,iix,jjx) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) end if if (iix /= 1) then info=psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) end if err=info call psb_errcomm(ictxt,err) if(err /= 0) goto 9999 liwork=nrow if (present(work)) then if(size(work) >= liwork) then aliw=.false. iwork => work else aliw=.true. allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if else aliw=.true. allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if ! exchange halo elements xp => x(iix:size(x,1),jjx:jjx+k-1) if(tran_ == 'N') then call psi_swapdata(imode,k,szero,xp,& & desc_a,iwork,info,data=data_) else if((tran_ == 'T').or.(tran_ == 'C')) then call psi_swaptran(imode,k,sone,xp,& &desc_a,iwork,info) else info = psb_err_internal_error_ call psb_errpush(info,name,a_err='invalid tran') goto 9999 end if if(info /= psb_success_) then ch_err='PSI_cswapdata' call psb_errpush(psb_err_from_subroutine_,name,a_err=ch_err) goto 9999 end if if (aliw) deallocate(iwork) nullify(iwork) call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ione*ictxt,err_act) return end subroutine psb_shalom !!$ !!$ Parallel Sparse BLAS version 3.5 !!$ (C) Copyright 2006-2018 !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari !!$ !!$ 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_shalov ! This subroutine performs the exchange of the halo elements in a ! distributed dense vector between all the processes. ! ! Arguments: ! x - real,dimension(:). The local part of the dense vector. ! 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). Work area. ! tran - character(optional). Transpose exchange. ! mode - integer(optional). Communication mode (see Swapdata) ! data - integer Which index list in desc_a should be used ! to retrieve rows, 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 psb_shalov(x,desc_a,info,work,tran,mode,data) use psb_base_mod, psb_protect_name => psb_shalov use psi_mod implicit none real(psb_spk_), intent(inout) :: x(:) type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info real(psb_spk_), target, optional, intent(inout) :: work(:) integer(psb_ipk_), intent(in), optional :: mode,data character, intent(in), optional :: tran ! locals integer(psb_mpk_) :: ictxt, np, me integer(psb_ipk_) :: err_act, ldx, iix, jjx, nrow, imode, err, liwork,data_ integer(psb_lpk_) :: m, n, ix, ijx real(psb_spk_),pointer :: iwork(:) character :: tran_ character(len=20) :: name, ch_err logical :: aliw name='psb_shalov' info=psb_success_ call psb_erractionsave(err_act) if (psb_errstatus_fatal()) then info = psb_err_internal_error_ ; goto 9999 end if ictxt=desc_a%get_context() ! check on blacs grid call psb_info(ictxt, me, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif ix = 1 ijx = 1 m = desc_a%get_global_rows() n = desc_a%get_global_cols() nrow = desc_a%get_local_rows() if (present(tran)) then tran_ = psb_toupper(tran) else tran_ = 'N' endif if (present(data)) then data_ = data else data_ = psb_comm_halo_ endif if (present(mode)) then imode = mode else imode = IOR(psb_swap_send_,psb_swap_recv_) endif ldx = size(x,1) ! check vector correctness call psb_chkvect(m,lone,ldx,ix,ijx,desc_a,info,iix,jjx) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) end if if (iix /= 1) then info=psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) end if err=info call psb_errcomm(ictxt,err) if(err /= 0) goto 9999 liwork=nrow if (present(work)) then if(size(work) >= liwork) then aliw=.false. iwork => work else aliw=.true. allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if else aliw=.true. allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if ! exchange halo elements if(tran_ == 'N') then call psi_swapdata(imode,szero,x(iix:size(x)),& & desc_a,iwork,info,data=data_) else if((tran_ == 'T').or.(tran_ == 'C')) then call psi_swaptran(imode,sone,x(iix:size(x)),& & desc_a,iwork,info) else info = psb_err_internal_error_ call psb_errpush(info,name,a_err='invalid tran') goto 9999 end if if(info /= psb_success_) then ch_err='PSI_swapdata' call psb_errpush(psb_err_from_subroutine_,name,a_err=ch_err) goto 9999 end if if (aliw) deallocate(iwork) nullify(iwork) call psb_erractionrestore(err_act) return 9999 call psb_error_handler(ione*ictxt,err_act) return end subroutine psb_shalov