!!$ !!$ Parallel Sparse BLAS version 3.0 !!$ (C) Copyright 2006, 2007, 2008, 2009, 2010 !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ !!$ 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_sspmm.f90 ! ! Subroutine: psb_sspmm ! Performs one of the distributed matrix-vector operations ! ! sub( Y ) := alpha * Pr * A * Pc * sub( X ) + beta * sub( Y ), or ! ! sub( Y ) := alpha * Pr * A' * Pr * sub( X ) + beta * sub( Y ), ! ! where: ! ! sub( X ) denotes: X(1:N,JX:JX+K-1), ! ! sub( Y ) denotes: Y(1:M,JY:JY+K-1), ! ! alpha and beta are scalars, and sub( X ) and sub( Y ) are distributed ! vectors and A is a M-by-N distributed matrix. ! ! Arguments: ! alpha - real The scalar alpha. ! a - type(psb_sspmat_type). The sparse matrix containing A. ! x(:,:) - real The input vector containing the entries of ( X ). ! beta - real The scalar beta. ! y(:,:) - real The input vector containing the entries of ( Y ). ! desc_a - type(psb_desc_type). The communication descriptor. ! info - integer. Return code ! trans - character(optional). Whether A or A'. Default: 'N' ! k - integer(optional). The number of right-hand sides. ! jx - integer(optional). The column offset for ( X ). Default: 1 ! jy - integer(optional). The column offset for ( Y ). Default: 1 ! work(:) - real,(optional). Working area. ! doswap - logical(optional). Whether to performe halo updates. ! subroutine psb_sspmm(alpha,a,x,beta,y,desc_a,info,& & trans, k, jx, jy, work, doswap) use psb_base_mod, psb_protect_name => psb_sspmm use psi_mod implicit none real(psb_spk_), intent(in) :: alpha, beta real(psb_spk_), intent(inout), target :: x(:,:) real(psb_spk_), intent(inout), target :: y(:,:) type(psb_sspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info real(psb_spk_), optional, target, intent(inout) :: work(:) character, intent(in), optional :: trans integer(psb_ipk_), intent(in), optional :: k, jx, jy logical, intent(in), optional :: doswap ! locals integer(psb_ipk_) :: ictxt, np, me,& & err_act, n, iix, jjx, ia, ja, iia, jja, ix, iy, ik, ijx, ijy,& & m, nrow, ncol, lldx, lldy, liwork, iiy, jjy,& & i, ib, ib1, ip, idx integer(psb_ipk_), parameter :: nb=4 real(psb_spk_), pointer :: xp(:,:), yp(:,:), iwork(:) real(psb_spk_), allocatable :: xvsave(:,:) character :: trans_ character(len=20) :: name, ch_err logical :: aliw, doswap_ integer(psb_ipk_) :: debug_level, debug_unit name='psb_sspmm' if(psb_get_errstatus() /= 0) return info=psb_success_ call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt=desc_a%get_context() call psb_info(ictxt, me, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif ia = 1 ja = 1 ix = 1 if (present(jx)) then ijx = jx else ijx = 1 endif iy = 1 if (present(jy)) then ijy = jy else ijy = 1 endif if (present(doswap)) then doswap_ = doswap else doswap_ = .true. endif if (present(k)) then ik = min(k,size(x,2)-ijx+1) ik = min(ik,size(y,2)-ijy+1) else ik = min(size(x,2)-ijx+1,size(y,2)-ijy+1) endif if (present(trans)) then trans_ = psb_toupper(trans) else trans_ = 'N' endif if ( (trans_ == 'N').or.(trans_ == 'T')& & .or.(trans_ == 'C')) then else info = psb_err_iarg_invalid_value_ call psb_errpush(info,name) goto 9999 end if 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 = size(x,1) lldy = size(y,1) ! check for presence/size of a work area liwork= 2*ncol if (present(work)) then if (size(work) >= liwork) then aliw =.false. else aliw=.true. endif else aliw=.true. end if if (aliw) then 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 else iwork => work endif iwork(1)=szero ! checking for matrix correctness call psb_chkmat(m,n,ia,ja,desc_a,info,iia,jja) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkmat' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (trans_ == 'N') then ! Matrix is not transposed if((ja /= ix).or.(ia /= iy)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(n,ik,lldx,ix,ijx,desc_a,info,iix,jjx) if (info == psb_success_) & & call psb_chkvect(m,ik,lldy,iy,ijy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if if (doswap_.and.(np>1)) then ib1=min(nb,ik) xp => x(iix:lldx,jjx:jjx+ib1-1) if (doswap_)& & call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & ib1,szero,xp,desc_a,iwork,info) blk: do i=1, ik, nb ib=ib1 ib1 = max(0,min(nb,(ik)-(i-1+ib))) xp => x(iix:lldx,jjx+i-1+ib:jjx+i-1+ib+ib1-1) if ((ib1 > 0).and.(doswap_)) & & call psi_swapdata(psb_swap_send_,ib1,& & szero,xp,desc_a,iwork,info) if(info /= psb_success_) exit blk ! local Matrix-vector product call psb_csmm(alpha,a,x(:,jjx+i-1:jjx+i-1+ib-1),& & beta,y(:,jjy+i-1:jjy+i-1+ib-1),info,trans=trans_) if(info /= psb_success_) exit blk if((ib1 > 0).and.(doswap_))& & call psi_swapdata(psb_swap_recv_,ib1,& & szero,xp,desc_a,iwork,info) if(info /= psb_success_) exit blk end do blk else if (doswap_)& & call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & ib1,szero,x(:,1:ik),desc_a,iwork,info) if (info == psb_success_) call psb_csmm(alpha,a,x(:,1:ik),beta,y(:,1:ik),info) end if if(info /= psb_success_) then info = psb_err_from_subroutine_non_ call psb_errpush(info,name) goto 9999 end if else ! Matrix is transposed if((ja /= iy).or.(ia /= ix)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(m,ik,lldx,ix,ijx,desc_a,info,iix,jjx) if (info == psb_success_) & & call psb_chkvect(n,ik,lldy,iy,ijy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if ! ! Non-empty overlap, need a buffer to hold ! the entries updated with average operator. ! Why the average? because in this way they will contribute ! with a proper scale factor (1/np) to the overall product. ! call psi_ovrl_save(x(:,1:ik),xvsave,desc_a,info) if (info == psb_success_) call psi_ovrl_upd(x,desc_a,psb_avg_,info) y(nrow+1:ncol,1:ik) = szero if (info == psb_success_) & & call psb_csmm(alpha,a,x(:,1:ik),beta,y(:,1:ik),info,trans=trans_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' csmm ', info if (info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='psb_csmm' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (info == psb_success_) call psi_ovrl_restore(x,xvsave,desc_a,info) if (doswap_)then call psi_swaptran(ior(psb_swap_send_,psb_swap_recv_),& & ik,sone,y(:,1:ik),desc_a,iwork,info) if (info == psb_success_) call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & ik,sone,y(:,1:ik),desc_a,iwork,info,data=psb_comm_ovr_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' swaptran ', info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='PSI_dSwapTran' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if end if if (aliw) deallocate(iwork,stat=info) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' deallocat ',aliw, info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='Deallocate iwork' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if 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_sspmm !!$ !!$ Parallel Sparse BLAS version 3.0 !!$ (C) Copyright 2006, 2007, 2008, 2009, 2010 !!$ Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ !!$ 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_sspmv ! Performs one of the distributed matrix-vector operations ! ! Y := alpha * Pr * A * Pc * X + beta * Y, or ! ! Y := alpha * Pr * A' * Pr * X + beta * Y, ! ! alpha and beta are scalars, and X and Y are distributed ! vectors and A is a M-by-N distributed matrix. ! ! Arguments: ! alpha - real The scalar alpha. ! a - type(psb_sspmat_type). The sparse matrix containing A. ! x(:) - real The input vector containing the entries of ( X ). ! beta - real The scalar beta. ! y(:) - real The input vector containing the entries of ( Y ). ! desc_a - type(psb_desc_type). The communication descriptor. ! info - integer. Return code ! trans - character(optional). Whether A or A'. Default: 'N' ! work(:) - real,(optional). Working area. ! doswap - logical(optional). Whether to performe halo updates. ! subroutine psb_sspmv(alpha,a,x,beta,y,desc_a,info,& & trans, work, doswap) use psb_base_mod, psb_protect_name => psb_sspmv use psi_mod implicit none real(psb_spk_), intent(in) :: alpha, beta real(psb_spk_), intent(inout), target :: x(:) real(psb_spk_), intent(inout), target :: y(:) type(psb_sspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info real(psb_spk_), optional, target, intent(inout) :: work(:) character, intent(in), optional :: trans logical, intent(in), optional :: doswap ! locals integer(psb_ipk_) :: ictxt, np, me,& & err_act, n, iix, jjx, ia, ja, iia, jja, ix, iy, ik, & & m, nrow, ncol, lldx, lldy, liwork, jx, jy, iiy, jjy,& & ib, ip, idx integer(psb_ipk_), parameter :: nb=4 real(psb_spk_), pointer :: iwork(:), xp(:), yp(:) real(psb_spk_), allocatable :: xvsave(:) character :: trans_ character(len=20) :: name, ch_err logical :: aliw, doswap_ integer(psb_ipk_) :: debug_level, debug_unit name='psb_sspmv' if(psb_get_errstatus() /= 0) return info=psb_success_ call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt=desc_a%get_context() call psb_info(ictxt, me, np) if (np == -1) then info = psb_err_context_error_ call psb_errpush(info,name) goto 9999 endif ia = 1 ja = 1 ix = 1 jx = 1 iy = 1 jy = 1 ik = 1 ib = 1 if (present(doswap)) then doswap_ = doswap else doswap_ = .true. endif if (present(trans)) then trans_ = psb_toupper(trans) else trans_ = 'N' endif if ( (trans_ == 'N').or.(trans_ == 'T')& & .or.(trans_ == 'C')) then else info = psb_err_iarg_invalid_value_ call psb_errpush(info,name) goto 9999 end if 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 = size(x) lldy = size(y) iwork => null() ! check for presence/size of a work area liwork= 2*ncol if (present(work)) then if (size(work) >= liwork) then aliw =.false. else aliw=.true. endif else aliw=.true. end if if (aliw) then allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if else iwork => work endif if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' Allocated work ', info ! checking for matrix correctness call psb_chkmat(m,n,ia,ja,desc_a,info,iia,jja) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkmat' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' Checkmat ', info if (trans_ == 'N') then ! Matrix is not transposed if((ja /= ix).or.(ia /= iy)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(n,ik,lldx,ix,jx,desc_a,info,iix,jjx) if (info == psb_success_) & & call psb_chkvect(m,ik,lldy,iy,jy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if if (doswap_) then call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & szero,x,desc_a,iwork,info,data=psb_comm_halo_) end if call psb_csmm(alpha,a,x,beta,y,info) if(info /= psb_success_) then info = psb_err_from_subroutine_non_ call psb_errpush(info,name) goto 9999 end if else ! Matrix is transposed if((ja /= iy).or.(ia /= ix)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(m,ik,lldx,ix,jx,desc_a,info,iix,jjx) if (info == psb_success_)& & call psb_chkvect(n,ik,lldy,iy,jy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if xp => x(1:lldx) yp => y(1:lldy) ! ! Non-empty overlap, need a buffer to hold ! the entries updated with average operator. ! Why the average? because in this way they will contribute ! with a proper scale factor (1/np) to the overall product. ! call psi_ovrl_save(x,xvsave,desc_a,info) if (info == psb_success_) call psi_ovrl_upd(x,desc_a,psb_avg_,info) yp(nrow+1:ncol) = szero ! local Matrix-vector product if (info == psb_success_) call psb_csmm(alpha,a,x,beta,y,info,trans=trans_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' csmm ', info if (info == psb_success_) call psi_ovrl_restore(x,xvsave,desc_a,info) if (info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='psb_csmm' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (doswap_) then call psi_swaptran(ior(psb_swap_send_,psb_swap_recv_),& & sone,yp,desc_a,iwork,info) if (info == psb_success_) call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & sone,yp,desc_a,iwork,info,data=psb_comm_ovr_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' swaptran ', info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='PSI_dSwapTran' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if end if if (aliw) deallocate(iwork,stat=info) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' deallocat ',aliw, info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='Deallocate iwork' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if nullify(iwork) call psb_erractionrestore(err_act) if (debug_level >= psb_debug_comp_) then call psb_barrier(ictxt) write(debug_unit,*) me,' ',trim(name),' Returning ' endif 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_sspmv subroutine psb_sspmv_vect(alpha,a,x,beta,y,desc_a,info,& & trans, work, doswap) use psb_base_mod, psb_protect_name => psb_sspmv_vect use psi_mod implicit none real(psb_spk_), intent(in) :: alpha, beta type(psb_s_vect_type), intent(inout) :: x type(psb_s_vect_type), intent(inout) :: y type(psb_sspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), intent(out) :: info real(psb_spk_), optional, target, intent(inout) :: work(:) character, intent(in), optional :: trans logical, intent(in), optional :: doswap ! locals integer(psb_ipk_) :: ictxt, np, me,& & err_act, n, iix, jjx, ia, ja, iia, jja, ix, iy, ik, & & m, nrow, ncol, lldx, lldy, liwork, jx, jy, iiy, jjy,& & ib, ip, idx integer(psb_ipk_), parameter :: nb=4 real(psb_spk_), pointer :: iwork(:), xp(:), yp(:) real(psb_spk_), allocatable :: xvsave(:) character :: trans_ character(len=20) :: name, ch_err logical :: aliw, doswap_ integer(psb_ipk_) :: debug_level, debug_unit name='psb_sspmv' if (psb_errstatus_fatal()) return info=psb_success_ call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt=desc_a%get_context() 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 if (.not.allocated(y%v)) then info = psb_err_invalid_vect_state_ call psb_errpush(info,name) goto 9999 endif ia = 1 ja = 1 ix = 1 jx = 1 iy = 1 jy = 1 ik = 1 ib = 1 if (present(doswap)) then doswap_ = doswap else doswap_ = .true. endif if (present(trans)) then trans_ = psb_toupper(trans) else trans_ = 'N' endif if ( (trans_ == 'N').or.(trans_ == 'T')& & .or.(trans_ == 'C')) then else info = psb_err_iarg_invalid_value_ call psb_errpush(info,name) goto 9999 end if 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() lldy = y%get_nrows() iwork => null() ! check for presence/size of a work area liwork= 2*ncol if (present(work)) then if (size(work) >= liwork) then aliw =.false. else aliw=.true. endif else aliw=.true. end if if (aliw) then allocate(iwork(liwork),stat=info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if else iwork => work endif if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' Allocated work ', info ! checking for matrix correctness call psb_chkmat(m,n,ia,ja,desc_a,info,iia,jja) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkmat' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' Checkmat ', info if (trans_ == 'N') then ! Matrix is not transposed if((ja /= ix).or.(ia /= iy)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(n,ik,lldx,ix,jx,desc_a,info,iix,jjx) if (info == psb_success_) & & call psb_chkvect(m,ik,lldy,iy,jy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if if (doswap_) then call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & szero,x%v,desc_a,iwork,info,data=psb_comm_halo_) end if call psb_csmm(alpha,a,x,beta,y,info) if(info /= psb_success_) then info = psb_err_from_subroutine_non_ call psb_errpush(info,name) goto 9999 end if else ! Matrix is transposed if((ja /= iy).or.(ia /= ix)) then ! this case is not yet implemented info = psb_err_ja_nix_ia_niy_unsupported_ call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(m,ik,lldx,ix,jx,desc_a,info,iix,jjx) if (info == psb_success_)& & call psb_chkvect(n,ik,lldy,iy,jy,desc_a,info,iiy,jjy) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if((iix /= 1).or.(iiy /= 1)) then ! this case is not yet implemented info = psb_err_ix_n1_iy_n1_unsupported_ call psb_errpush(info,name) goto 9999 end if ! ! Non-empty overlap, need a buffer to hold ! the entries updated with average operator. ! Why the average? because in this way they will contribute ! with a proper scale factor (1/np) to the overall product. ! call psi_ovrl_save(x%v,xvsave,desc_a,info) if (info == psb_success_) call psi_ovrl_upd(x%v,desc_a,psb_avg_,info) !!! THIS SHOULD BE FIXED !!! But beta is almost never /= 0 !!$ yp(nrow+1:ncol) = szero ! local Matrix-vector product if (info == psb_success_) call psb_csmm(alpha,a,x,beta,y,info,trans=trans_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' csmm ', info if (info == psb_success_) call psi_ovrl_restore(x%v,xvsave,desc_a,info) if (info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='psb_csmm' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (doswap_) then call psi_swaptran(ior(psb_swap_send_,psb_swap_recv_),& & sone,y%v,desc_a,iwork,info) if (info == psb_success_) call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & sone,y%v,desc_a,iwork,info,data=psb_comm_ovr_) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' swaptran ', info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='PSI_SwapTran' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if end if if (aliw) deallocate(iwork,stat=info) if (debug_level >= psb_debug_comp_) & & write(debug_unit,*) me,' ',trim(name),' deallocat ',aliw, info if(info /= psb_success_) then info = psb_err_from_subroutine_ ch_err='Deallocate iwork' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if nullify(iwork) call psb_erractionrestore(err_act) if (debug_level >= psb_debug_comp_) then call psb_barrier(ictxt) write(debug_unit,*) me,' ',trim(name),' Returning ' endif 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_sspmv_vect