!!$ !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 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_dspmm.f90 ! ! Subroutine: psb_dspmm ! 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 *if* TRANS = 'N', ! ! X(1:N,JX:JX+K-1), ! ! *else* ! ! X(1:M,JX:JX+K-1). ! ! *end if* ! ! sub( Y ) denotes *if* trans = 'N', ! ! Y(1:M,JY:JY+K-1), ! ! *else* ! ! Y(1:N,JY:JY+K-1) ! ! *end* *if* ! ! alpha and beta are scalars, and sub( X ) and sub( Y ) are distributed ! vectors and A is a M-by-N distributed matrix. ! ! Parameters: ! alpha - real. The scalar alpha. ! a - type(). The sparse matrix containing A. ! x - real,dimension(:,:). The input vector containing the entries of sub( X ). ! beta - real. The scalar beta. ! y - real,dimension(:,:). The input vector containing the entries of sub( Y ). ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! trans - character(optional). Whether A or A'. If not present 'N' is assumed. ! k - integer(optional). The number of right-hand sides. ! jx - integer(optional). The column offset for sub( X ). If not present 1 is assumed. ! jy - integer(optional). The column offset for sub( Y ). If not present 1 is assumed. ! work - real,dimension(:)(optional). Working area. ! doswap - integer(optional). Whether to performe halo updates. ! subroutine psb_dspmm(alpha,a,x,beta,y,desc_a,info,& & trans, k, jx, jy, work, doswap) use psb_spmat_type use psb_serial_mod use psb_descriptor_type use psb_comm_mod use psi_mod use psb_check_mod use psb_error_mod use psb_string_mod use psb_penv_mod implicit none real(kind(1.D0)), intent(in) :: alpha, beta real(kind(1.d0)), intent(inout), target :: x(:,:) real(kind(1.d0)), intent(inout), target :: y(:,:) type(psb_dspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info real(kind(1.d0)), optional, target :: work(:) character, intent(in), optional :: trans integer, intent(in), optional :: k, jx, jy,doswap ! locals integer :: ictxt, np, me,& & err_act, n, iix, jjx, ia, ja, iia, jja, ix, iy, ik, ijx, ijy,& & idoswap, m, nrow, ncol, lldx, lldy, liwork, llwork, iiy, jjy,& & i, ib, ib1 integer, parameter :: nb=4 real(kind(1.d0)),pointer :: xp(:,:), yp(:,:), iwork(:) character :: itrans character(len=20) :: name, ch_err logical :: aliw name='psb_dspmm' if(psb_get_errstatus() /= 0) return info=0 call psb_erractionsave(err_act) ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 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 idoswap = doswap else idoswap = 1 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 if ( (toupper(trans) == 'N').or.(toupper(trans) == 'T')) then itrans = toupper(trans) else if (toupper(trans) == 'C') then info = 3020 call psb_errpush(info,name) goto 9999 else info = 70 call psb_errpush(info,name) goto 9999 end if else itrans = 'N' 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) lldx = size(x,1) lldy = size(y,1) ! check for presence/size of a work area liwork= 2*ncol if (a%pr(1) /= 0) liwork = liwork + n * ik if (a%pl(1) /= 0) liwork = liwork + m * ik 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 /= 0) then info=4010 ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if else iwork => work endif iwork(1)=dzero ! checking for matrix correctness call psb_chkmat(m,n,ia,ja,desc_a,info,iia,jja) if(info /= 0) then info=4010 ch_err='psb_chkmat' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (itrans == 'N') then ! Matrix is not transposed if((ja /= ix).or.(ia /= iy)) then ! this case is not yet implemented info = 3030 call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(n,ik,size(x,1),ix,ijx,desc_a,info,iix,jjx) if (info == 0) & & call psb_chkvect(m,ik,size(y,1),iy,ijy,desc_a,info,iiy,jjy) if(info /= 0) then info=4010 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 = 3040 call psb_errpush(info,name) goto 9999 end if ib1=min(nb,ik) xp => x(iix:lldx,jjx:jjx+ib1-1) if(idoswap > 0)& & call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & ib1,dzero,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+ib-1:jjx+i+ib+ib1-2) if((ib1 > 0).and.(idoswap > 0))& & call psi_swapdata(psb_swap_send_,ib1,& & dzero,xp,desc_a,iwork,info) if(info /= 0) exit blk ! local Matrix-vector product call psb_csmm(alpha,a,x(iix:lldx,jjx:jjx+ib-1),& & beta,y(iiy:lldy,jjy:jjy+ib-1),info,trans=itrans) if(info /= 0) exit blk if((ib1 > 0).and.(idoswap > 0))& & call psi_swapdata(psb_swap_send_,ib1,& & dzero,xp,desc_a,iwork,info) if(info /= 0) exit blk end do blk if(info /= 0) then info = 4011 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 = 3030 call psb_errpush(info,name) goto 9999 end if if(desc_a%ovrlap_elem(1) /= -1) then info = 3070 call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(m,ik,size(x,1),ix,ijx,desc_a,info,iix,jjx) if (info == 0) & & call psb_chkvect(n,ik,size(y,1),iy,ijy,desc_a,info,iiy,jjy) if(info /= 0) then info=4010 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 = 3040 call psb_errpush(info,name) goto 9999 end if y(iiy+nrow+1-1:iiy+ncol,1:ik)=dzero ! local Matrix-vector product call psb_csmm(alpha,a,x(iix:lldx,jjx:jjx+ik-1),& & beta,y(iiy:lldy,jjy:jjy+ik-1),info,trans=itrans) if(info /= 0) then info = 4010 ch_err='csmm' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if yp => y(iiy:lldy,jjy:jjy+ik-1) if (idoswap/=0)& & call psi_swaptran(ior(psb_swap_send_,psb_swap_recv_),& & ik,done,yp,desc_a,iwork,info) if(info /= 0) then info = 4010 ch_err='PSI_dSwapTran' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if if(aliw) deallocate(iwork) nullify(iwork) call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == act_abort) then call psb_error(ictxt) return end if return end subroutine psb_dspmm !!$ !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 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_dspmmv ! 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. ! ! Parameters: ! alpha - real. The scalar alpha. ! a - type(). The sparse matrix containing A. ! x - real,dimension(:). The input vector containing the entries of X. ! beta - real. The scalar beta. ! y - real,dimension(:. The input vector containing the entries of Y. ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! trans - character(optional). Whether A or A'. If not present 'N' is assumed. ! work - real,dimension(:)(optional). Working area. ! doswap - integer(optional). Whether to performe halo updates. ! subroutine psb_dspmv(alpha,a,x,beta,y,desc_a,info,& & trans, work, doswap) use psb_spmat_type use psb_serial_mod use psb_descriptor_type use psb_comm_mod use psb_const_mod use psi_mod use psb_check_mod use psb_error_mod use psb_string_mod use psb_penv_mod implicit none real(kind(1.D0)), intent(in) :: alpha, beta real(kind(1.d0)), intent(inout), target :: x(:) real(kind(1.d0)), intent(inout), target :: y(:) type(psb_dspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info real(kind(1.d0)), optional, target :: work(:) character, intent(in), optional :: trans integer, intent(in), optional :: doswap ! locals integer :: ictxt, np, me,& & err_act, n, iix, jjx, ia, ja, iia, jja, ix, iy, ik, ijx, ijy,& & idoswap, m, nrow, ncol, lldx, lldy, liwork, llwork, jx, jy, iiy, jjy,& & i, ib, ib1 integer, parameter :: nb=4 real(kind(1.d0)),pointer :: tmpx(:), iwork(:), xp(:), yp(:) character :: itrans character(len=20) :: name, ch_err logical :: aliw logical, parameter :: debug=.false. name='psb_dspmv' if(psb_get_errstatus() /= 0) return info=0 call psb_erractionsave(err_act) ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 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 idoswap = doswap else idoswap = 1 endif if (present(trans)) then if ( (toupper(trans) == 'N').or.(toupper(trans) == 'T')) then itrans = toupper(trans) else if (toupper(trans) == 'C') then info = 3020 call psb_errpush(info,name) goto 9999 else info = 70 call psb_errpush(info,name) goto 9999 end if else itrans = 'N' 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) lldx = size(x) lldy = size(y) iwork => null() ! check for presence/size of a work area liwork= 2*ncol if (a%pr(1) /= 0) liwork = liwork + n * ik if (a%pl(1) /= 0) liwork = liwork + m * ik ! write(0,*)'---->>>',work(1) if (present(work)) then if (size(work) >= liwork) then aliw =.false. else aliw=.true. endif else aliw=.true. end if aliw=.true. if (aliw) then allocate(iwork(liwork),stat=info) if(info /= 0) then info=4010 ch_err='Allocate' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if else iwork => work endif if (debug) write(0,*) me,name,' Allocated work ', info ! checking for matrix correctness call psb_chkmat(m,n,ia,ja,desc_a,info,iia,jja) if(info /= 0) then info=4010 ch_err='psb_chkmat' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug) write(0,*) me,name,' Checkmat ', info if (itrans == 'N') then ! Matrix is not transposed if((ja /= ix).or.(ia /= iy)) then ! this case is not yet implemented info = 3030 call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(n,ik,size(x),ix,jx,desc_a,info,iix,jjx) if (info == 0) & & call psb_chkvect(m,ik,size(y),iy,jy,desc_a,info,iiy,jjy) if(info /= 0) then info=4010 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 = 3040 call psb_errpush(info,name) goto 9999 end if if (idoswap == 0) then x(nrow+1:ncol)=dzero else call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),& & dzero,x,desc_a,iwork,info,data=psb_comm_halo_) end if ! local Matrix-vector product call psb_csmm(alpha,a,x(iix:lldx),beta,y(iiy:lldy),info) if(info /= 0) then info = 4011 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 = 3030 call psb_errpush(info,name) goto 9999 end if if(desc_a%ovrlap_elem(1) /= -1) then info = 3070 call psb_errpush(info,name) goto 9999 end if ! checking for vectors correctness call psb_chkvect(m,ik,size(x),ix,jx,desc_a,info,iix,jjx) if (info == 0)& & call psb_chkvect(n,ik,size(y),iy,jy,desc_a,info,iiy,jjy) if(info /= 0) then info=4010 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 = 3040 call psb_errpush(info,name) goto 9999 end if xp => x(iix:lldx) yp => y(iiy:lldy) yp(nrow+1:ncol)=dzero if (debug) write(0,*) me,name,' checkvect ', info ! local Matrix-vector product call psb_csmm(alpha,a,xp,beta,yp,info,trans=itrans) if (debug) write(0,*) me,name,' csmm ', info if(info /= 0) then info = 4010 ch_err='dcsmm' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if(idoswap /= 0)& & call psi_swaptran(ior(psb_swap_send_,psb_swap_recv_),& & done,yp,desc_a,iwork,info) if (debug) write(0,*) me,name,' swaptran ', info if(info /= 0) then info = 4010 ch_err='PSI_dSwapTran' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if end if if (aliw) deallocate(iwork,stat=info) if (debug) write(0,*) me,name,' deallocat ',aliw, info if(info /= 0) then info = 4010 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) call psb_barrier(ictxt) if (debug) write(0,*) me,name,' Returning ' return 9999 continue call psb_erractionrestore(err_act) if (err_act == act_abort) then call psb_error(ictxt) return end if return end subroutine psb_dspmv