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570 lines
16 KiB
Fortran
570 lines
16 KiB
Fortran
!!$
|
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!!$ Parallel Sparse BLAS version 2.2
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|
!!$ (C) Copyright 2006/2007/2008
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|
!!$ Salvatore Filippone University of Rome Tor Vergata
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|
!!$ 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
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|
!!$ 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
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! File: psb_dspsm.f90
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!
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! Subroutine: psb_dspsm
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! Performs one of the distributed matrix-vector operations
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!
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! sub( Y ) := alpha * Pr * A-1 * Pc *sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * D * Pr * A-1 * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-1 * Pc * D * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * D * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
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!
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! sub( Y ) := alpha * Pr * A-T * Pc * D * sub( X ) + beta * sub (Y ), or
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!
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! where :
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!
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! sub( X ) denotes X(1:M,JX:JX+K-1),
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!
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! sub( Y ) denotes Y(1:M,JY:JY+K-1).
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!
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! sub( X ) is a distributed
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! vector and T is a M-by-M distributed triangular matrix.
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!
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! Arguments:
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! alpha - real The scalar alpha.
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! a - type(psb_zspmat_type). The sparse matrix containing A.
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! x(:,:) - real The input vector containing the entries of ( X ).
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! beta - real The scalar beta.
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! y(:,:) - real The input vector containing the entries of ( Y ).
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
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! unitd - character(optional). Specify some type of operation with
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! the diagonal matrix D.
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! choice - integer(optional). The kind of update to perform on overlap elements.
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! d(:) - real , optional Matrix for diagonal scaling.
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! k - integer(optional). The number of right-hand sides.
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! jx - integer(optional). The column offset for ( X ). Default: 1
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! jy - integer(optional). The column offset for ( Y ). Default: 1
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! work(:) - real , optional Working area.
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!
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!
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subroutine psb_dspsm(alpha,a,x,beta,y,desc_a,info,&
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& trans, unitd, choice, diag, k, jx, jy, work)
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use psb_spmat_type
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use psb_serial_mod
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use psb_descriptor_type
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use psb_comm_mod
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use psi_mod
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use psb_check_mod
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use psb_error_mod
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use psb_string_mod
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use psb_penv_mod
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implicit none
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real(kind(1.D0)), intent(in) :: alpha, beta
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real(kind(1.d0)), intent(in), target :: x(:,:)
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real(kind(1.d0)), intent(inout), target :: y(:,:)
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type (psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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real(kind(1.d0)), intent(in), optional, target :: diag(:)
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real(kind(1.d0)), optional, target :: work(:)
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character, intent(in), optional :: trans, unitd
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integer, intent(in), optional :: choice
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integer, intent(in), optional :: k, jx, jy
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! locals
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integer :: ictxt, np, me,&
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& err_act, iix, jjx, ia, ja, iia, jja, lldx,lldy, choice_,&
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& ix, iy, ik, ijx, ijy, i, lld,&
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& m, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
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character :: lunitd
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integer, parameter :: nb=4
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real(kind(1.d0)),pointer :: iwork(:), xp(:,:), yp(:,:), id(:)
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character :: itrans
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character(len=20) :: name, ch_err
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logical :: aliw
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name='psb_dspsm'
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if(psb_get_errstatus() /= 0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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! just this case right now
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ia = 1
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ja = 1
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ix = 1
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if (present(jx)) then
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ijx = jx
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else
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ijx = 1
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endif
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iy = 1
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if (present(jy)) then
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ijy = jy
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else
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ijy = 1
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endif
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if (present(k)) then
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ik = min(k,size(x,2)-ijx+1)
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ik = min(ik,size(y,2)-ijy+1)
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else
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ik = min(size(x,2)-ijx+1,size(y,2)-ijy+1)
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endif
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if (present(choice)) then
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choice_ = choice
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else
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choice_ = psb_avg_
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endif
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if (present(unitd)) then
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lunitd = toupper(unitd)
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else
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lunitd = 'U'
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endif
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if (present(trans)) then
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itrans = toupper(trans)
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if((itrans == 'N').or.(itrans == 'T').or. (itrans == 'C')) then
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! OK
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else
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info = 70
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call psb_errpush(info,name)
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goto 9999
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end if
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else
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itrans = 'N'
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endif
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m = psb_cd_get_global_rows(desc_a)
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nrow = psb_cd_get_local_rows(desc_a)
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ncol = psb_cd_get_local_cols(desc_a)
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lldx = size(x,1)
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lldy = size(y,1)
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if((lldx < ncol).or.(lldy < ncol)) then
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info=3010
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call psb_errpush(info,name)
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goto 9999
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end if
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! check for presence/size of a work area
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iwork => null()
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liwork= 2*ncol
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if (a%pr(1) /= 0) llwork = liwork + m * ik
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if (a%pl(1) /= 0) llwork = llwork + m * ik
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if (present(work)) then
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if (size(work) >= liwork) then
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aliw =.false.
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else
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aliw=.true.
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endif
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else
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aliw=.true.
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end if
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if (aliw) then
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allocate(iwork(liwork),stat=info)
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if(info /= 0) then
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info=4010
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ch_err='psb_realloc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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else
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iwork => work
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endif
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iwork(1)=0.d0
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if(present(diag)) then
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lld = size(diag)
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id => diag
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else
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lld=1
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allocate(id(1))
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id=1.d0
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end if
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! checking for matrix correctness
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call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
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! checking for vectors correctness
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if (info == 0) &
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& call psb_chkvect(m,ik,size(x,1),ix,ijx,desc_a,info,iix,jjx)
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if (info == 0) &
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& call psb_chkvect(m,ik,size(y,1),iy,ijy,desc_a,info,iiy,jjy)
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if(info /= 0) then
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info=4010
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ch_err='psb_chkvect/mat'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if(ja /= ix) then
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! this case is not yet implemented
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info = 3030
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end if
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if((iix /= 1).or.(iiy /= 1)) then
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! this case is not yet implemented
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info = 3040
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end if
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if(info /= 0) then
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call psb_errpush(info,name)
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goto 9999
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end if
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! Perform local triangular system solve
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xp => x(iix:lldx,jjx:jjx+ik-1)
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yp => y(iiy:lldy,jjy:jjy+ik-1)
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call psb_cssm(alpha,a,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
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if(info /= 0) then
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info = 4010
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ch_err='dcssm'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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! update overlap elements
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if (choice_ > 0) then
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call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),ik,&
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& done,yp,desc_a,iwork,info,data=psb_comm_ovr_)
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if (info == 0) call psi_ovrl_upd(yp,desc_a,choice_,info)
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if (info /= 0) then
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call psb_errpush(4010,name,a_err='Inner updates')
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goto 9999
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end if
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end if
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if(aliw) deallocate(iwork)
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if(.not.present(diag)) deallocate(id)
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_dspsm
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!!$
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!!$ Parallel Sparse BLAS version 2.2
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|
!!$ (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.
|
|
!!$
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!!$
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!
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! Subroutine: psb_dspsv
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! Performs one of the distributed matrix-vector operations
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!
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|
! Y := alpha * Pr * A-1 * Pc * X + beta * Y, or
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!
|
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! Y := alpha * D * Pr * A-1 * Pc * X + beta * Y, or
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!
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! Y := alpha * Pr * A-1 * Pc * D * X + beta * Y, or
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!
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! Y := alpha * Pr * A-T * Pc * X + beta * Y, or
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!
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! Y := alpha * D * Pr * A-T * Pc * X + beta * Y, or
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!
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! Y := alpha * Pr * A-T * Pc * D * X + beta * Y, or
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!
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! X is a distributed
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|
! vector and T is a M-by-M distributed triangular matrix.
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!
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!
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! Arguments:
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! alpha - real The scalar alpha.
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|
! a - type(psb_zspmat_type). The sparse matrix containing A.
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|
! x(:) - real The input vector containing the entries of ( X ).
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! beta - real The scalar beta.
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! y(:) - real The input vector containing the entries of ( Y ).
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! desc_a - type(psb_desc_type). The communication descriptor.
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|
! info - integer. Return code
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! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
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! unitd - character(optional). Specify some type of operation with
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! the diagonal matrix D.
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! choice - integer(optional). The kind of update to perform on overlap elements.
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! d(:) - real , optional Matrix for diagonal scaling.
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! work(:) - real , optional Working area.
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!
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subroutine psb_dspsv(alpha,a,x,beta,y,desc_a,info,&
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& trans, unitd, choice, diag, work)
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use psb_spmat_type
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use psb_serial_mod
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use psb_descriptor_type
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use psb_comm_mod
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use psi_mod
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use psb_check_mod
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use psb_error_mod
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use psb_string_mod
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use psb_penv_mod
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implicit none
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real(kind(1.D0)), intent(in) :: alpha, beta
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real(kind(1.d0)), intent(in), target :: x(:)
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real(kind(1.d0)), intent(inout), target :: y(:)
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type(psb_dspmat_type), intent(in) :: a
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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real(kind(1.d0)), intent(in), optional, target :: diag(:)
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real(kind(1.d0)), optional, target :: work(:)
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character, intent(in), optional :: trans, unitd
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integer, intent(in), optional :: choice
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! locals
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|
integer :: ictxt, np, me, &
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|
& err_act, iix, jjx, ia, ja, iia, jja, lldx,lldy, choice_,&
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|
& ix, iy, ik, jx, jy, i, lld,&
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|
& m, nrow, ncol, liwork, llwork, iiy, jjy, idx, ndm
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|
|
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character :: lunitd
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integer, parameter :: nb=4
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real(kind(1.d0)),pointer :: iwork(:), xp(:), yp(:), id(:)
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character :: itrans
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character(len=20) :: name, ch_err
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logical :: aliw
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|
|
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name='psb_dspsv'
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if(psb_get_errstatus() /= 0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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|
|
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! just this case right now
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ia = 1
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ja = 1
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ix = 1
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iy = 1
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ik = 1
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jx= 1
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jy= 1
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if (present(choice)) then
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choice_ = choice
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else
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choice_ = psb_avg_
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endif
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if (present(unitd)) then
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lunitd = toupper(unitd)
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else
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lunitd = 'U'
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endif
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|
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if (present(trans)) then
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itrans = toupper(trans)
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if((itrans == 'N').or.(itrans == 'T').or.(itrans == 'C')) then
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! Ok
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else
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info = 70
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call psb_errpush(info,name)
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goto 9999
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end if
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else
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itrans = 'N'
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endif
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m = psb_cd_get_global_rows(desc_a)
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nrow = psb_cd_get_local_rows(desc_a)
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ncol = psb_cd_get_local_cols(desc_a)
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lldx = size(x)
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lldy = size(y)
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if((lldx < ncol).or.(lldy < ncol)) then
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info=3010
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call psb_errpush(info,name)
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goto 9999
|
|
end if
|
|
|
|
iwork => null()
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|
! check for presence/size of a work area
|
|
liwork= 2*ncol
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|
|
if (present(work)) then
|
|
if (size(work) >= liwork) then
|
|
aliw =.false.
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else
|
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aliw=.true.
|
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endif
|
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else
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aliw=.true.
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end if
|
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|
|
if (aliw) then
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allocate(iwork(liwork),stat=info)
|
|
if(info /= 0) then
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info=4010
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ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
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goto 9999
|
|
end if
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else
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iwork => work
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endif
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iwork(1)=0.d0
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|
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if (present(diag)) then
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lld = size(diag)
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id => diag
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else
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|
lld=1
|
|
allocate(id(1))
|
|
id=1.d0
|
|
end if
|
|
|
|
! checking for matrix correctness
|
|
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
|
|
! checking for vectors correctness
|
|
if (info == 0) &
|
|
& call psb_chkvect(m,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/mat'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if(ja /= ix) then
|
|
! this case is not yet implemented
|
|
info = 3030
|
|
end if
|
|
|
|
if((iix /= 1).or.(iiy /= 1)) then
|
|
! this case is not yet implemented
|
|
info = 3040
|
|
end if
|
|
|
|
if(info /= 0) then
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
! Perform local triangular system solve
|
|
xp => x(iix:lldx)
|
|
yp => y(iiy:lldy)
|
|
call psb_cssm(alpha,a,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
|
|
|
|
if(info /= 0) then
|
|
info = 4010
|
|
ch_err='dcssm'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
! update overlap elements
|
|
if (choice_ > 0) then
|
|
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),&
|
|
& done,yp,desc_a,iwork,info,data=psb_comm_ovr_)
|
|
|
|
|
|
if (info == 0) call psi_ovrl_upd(yp,desc_a,choice_,info)
|
|
if (info /= 0) then
|
|
call psb_errpush(4010,name,a_err='Inner updates')
|
|
goto 9999
|
|
end if
|
|
end if
|
|
|
|
if (aliw) deallocate(iwork)
|
|
if(.not.present(diag)) deallocate(id)
|
|
|
|
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_dspsv
|
|
|