! ! 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_lhalo.f90 ! ! Subroutine: psb_lhalo_vect ! This subroutine performs the exchange of the halo elements in a ! distributed vector between all the processes. ! ! Arguments: ! x - type(psb_l_vect_type) The local part of the 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 - integer(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_lhalo_vect(x,desc_a,info,work,tran,mode,data) use psb_base_mod, psb_protect_name => psb_lhalo_vect use psi_mod implicit none type(psb_l_vect_type), intent(inout) :: x type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info integer(psb_lpk_), target, optional, intent(inout) :: work(:) integer(psb_ipk_), intent(in), optional :: mode,data character, intent(in), optional :: tran ! locals integer(psb_ipk_) :: ictxt, np, me, err_act, iix, jjx, & & nrow, ncol, lldx, imode, liwork,data_ integer(psb_lpk_) :: m, n, ix, ijx integer(psb_lpk_),pointer :: iwork(:) character :: tran_ character(len=20) :: name, ch_err logical :: aliw name='psb_lhalov' 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 if (.not.allocated(x%v)) then info = psb_err_invalid_vect_state_ call psb_errpush(info,name) goto 9999 endif ix = 1 m = desc_a%get_global_rows() n = desc_a%get_global_cols() nrow = desc_a%get_local_rows() ncol = desc_a%get_local_cols() lldx = x%get_nrows() 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 if ((info == 0).and.(lldx= liwork) then iwork => work aliw=.false. 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,lzero,x%v,& & desc_a,iwork,info,data=data_) else if((tran_ == 'T').or.(tran_ == 'C')) then call psi_swaptran(imode,lone,x%v,& & 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_lhalo_vect ! ! Subroutine: psb_lhalo_multivect ! This subroutine performs the exchange of the halo elements in a ! distributed multivector between all the processes. ! ! Arguments: ! x - type(psb_l_multivect_type) The local part of the multivector ! 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 - integer(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_lhalo_multivect(x,desc_a,info,work,tran,mode,data) use psb_base_mod, psb_protect_name => psb_lhalo_multivect use psi_mod implicit none type(psb_l_multivect_type), intent(inout) :: x type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info integer(psb_lpk_), target, optional, intent(inout) :: work(:) integer(psb_ipk_), intent(in), optional :: mode,data character, intent(in), optional :: tran ! locals integer(psb_ipk_) :: ictxt, np, me, err_act, iix, jjx, & & nrow, ncol, lldx, imode, liwork,data_ integer(psb_lpk_) :: m, n, ix, ijx integer(psb_lpk_),pointer :: iwork(:) character :: tran_ character(len=20) :: name, ch_err logical :: aliw name='psb_lhalov' 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 if (.not.allocated(x%v)) then info = psb_err_invalid_vect_state_ 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() ncol = desc_a%get_local_cols() lldx = x%get_nrows() 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 if (lldx < ncol) call x%reall(ncol,x%get_ncols(),info) if(info /= psb_success_) then info=psb_err_from_subroutine_; ch_err='psb_reall' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if liwork=nrow if (present(work)) then if(size(work) >= liwork) then iwork => work aliw=.false. 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,lzero,x%v,& & desc_a,iwork,info,data=data_) else if((tran_ == 'T').or.(tran_ == 'C')) then call psi_swaptran(imode,lone,x%v,& & 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_lhalo_multivect