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434 lines
11 KiB
Fortran
434 lines
11 KiB
Fortran
1 year ago
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! Parallel Sparse BLAS GPU plugin
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! (C) Copyright 2013
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!
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! Salvatore Filippone
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! Alessandro Fanfarillo
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! 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
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! 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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subroutine psb_s_ell_csmv(alpha,a,x,beta,y,info,trans)
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use psb_base_mod
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use psb_s_ell_mat_mod, psb_protect_name => psb_s_ell_csmv
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implicit none
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class(psb_s_ell_sparse_mat), intent(in) :: a
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real(psb_spk_), intent(in) :: alpha, beta, x(:)
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real(psb_spk_), intent(inout) :: y(:)
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integer(psb_ipk_), intent(out) :: info
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character, optional, intent(in) :: trans
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character :: trans_
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integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc
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real(psb_spk_) :: acc
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logical :: tra, ctra
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Integer(Psb_ipk_) :: err_act
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character(len=20) :: name='d_ell_csmv'
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logical, parameter :: debug=.false.
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(trans)) then
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trans_ = trans
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else
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trans_ = 'N'
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end if
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if (.not.a%is_asb()) then
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info = psb_err_invalid_mat_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (a%is_dev()) call a%sync()
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tra = (psb_toupper(trans_) == 'T')
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ctra = (psb_toupper(trans_) == 'C')
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if (tra.or.ctra) then
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m = a%get_ncols()
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n = a%get_nrows()
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else
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n = a%get_ncols()
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m = a%get_nrows()
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end if
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if (size(x,1)<n) then
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info = 36
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call psb_errpush(info,name,i_err=(/3*ione,n/))
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goto 9999
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end if
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if (size(y,1)<m) then
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info = 36
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call psb_errpush(info,name,i_err=(/5*ione,m/))
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goto 9999
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end if
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call psb_s_ell_csmv_inner(m,n,alpha,size(a%ja,2,kind=psb_ipk_),&
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& a%ja,size(a%ja,1,kind=psb_ipk_),a%val,size(a%val,1,kind=psb_ipk_),&
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& a%is_triangle(),a%is_unit(),&
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& x,beta,y,tra,ctra)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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contains
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subroutine psb_s_ell_csmv_inner(m,n,alpha,nc,ja,ldj,val,ldv,&
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& is_triangle,is_unit, x,beta,y,tra,ctra)
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integer(psb_ipk_), intent(in) :: m,n,nc,ldj,ldv,ja(ldj,*)
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real(psb_spk_), intent(in) :: alpha, beta, x(*),val(ldv,*)
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real(psb_spk_), intent(inout) :: y(*)
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logical, intent(in) :: is_triangle,is_unit,tra,ctra
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integer(psb_ipk_) :: i,j,k, ir, jc, m4
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real(psb_spk_) :: acc(4)
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if (alpha == szero) then
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if (beta == szero) then
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do i = 1, m
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y(i) = szero
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enddo
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else
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do i = 1, m
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y(i) = beta*y(i)
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end do
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endif
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return
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end if
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if (.not.(tra.or.ctra)) then
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if (beta == szero) then
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m4 = mod(m,4)
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do i=1,m4
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acc(1) = szero
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do j=1,nc
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acc(1) = acc(1) + val(i,j) * x(ja(i,j))
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enddo
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y(i) = alpha*acc(1)
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end do
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if (alpha == sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = acc(1:4)
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end do
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else if (alpha == -sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) - val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = acc(1:4)
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end do
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else
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = alpha * acc(1:4)
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end do
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end if
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else if (beta == sone) then
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m4 = mod(m,4)
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do i=1,m4
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acc(1) = szero
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do j=1,nc
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acc(1) = acc(1) + val(i,j) * x(ja(i,j))
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enddo
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y(i) = y(i) + alpha*acc(1)
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end do
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if (alpha == sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = y(i:i+3) + acc(1:4)
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end do
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else if (alpha == -sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) - val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = y(i:i+3) + acc(1:4)
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end do
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else
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = y(i:i+3) + alpha*acc(1:4)
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end do
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end if
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else if (beta == -sone) then
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m4 = mod(m,4)
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do i=1,m4
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acc(1) = szero
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do j=1,nc
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acc(1) = acc(1) + val(i,j) * x(ja(i,j))
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enddo
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y(i) = - y(i) + alpha*acc(1)
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end do
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if (alpha == sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = -y(i:i+3) + acc(1:4)
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end do
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else if (alpha == -sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) - val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = -y(i:i+3) + acc(1:4)
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end do
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else
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = -y(i:i+3) + alpha*acc(1:4)
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end do
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end if
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else
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m4 = mod(m,4)
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do i=1,m4
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acc(1) = szero
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do j=1,nc
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acc(1) = acc(1) + val(i,j) * x(ja(i,j))
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enddo
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y(i) = beta*y(i) + alpha*acc(1)
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end do
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if (alpha == sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = beta*y(i:i+3) + acc(1:4)
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end do
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else if (alpha == -sone) then
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) - val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = beta*y(i:i+3) + acc(1:4)
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end do
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else
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!$omp parallel do private(i, j, acc)
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do i=m4+1,m,4
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acc = szero
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do j=1,nc
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acc(1:4) = acc(1:4) + val(i:i+3,j) * x(ja(i:i+3,j))
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enddo
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y(i:i+3) = beta*y(i:i+3) + alpha*acc(1:4)
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end do
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end if
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end if
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else if (tra) then
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if (beta == szero) then
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do i=1, m
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y(i) = szero
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end do
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else if (beta == sone) then
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! Do nothing
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else if (beta == -sone) then
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do i=1, m
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y(i) = -y(i)
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end do
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else
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do i=1, m
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y(i) = beta*y(i)
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end do
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end if
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!
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! Need to think about this.
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! Transpose does not mix well with ELLPACK.
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!
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if (alpha == sone) then
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do i=1,n
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do j=1,nc
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ir = ja(i,j)
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y(ir) = y(ir) + val(i,j)*x(i)
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end do
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enddo
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else if (alpha == -sone) then
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do i=1,n
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do j=1,nc
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ir = ja(i,j)
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y(ir) = y(ir) - val(i,j)*x(i)
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end do
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enddo
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else
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do i=1,n
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do j=1,nc
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ir = ja(i,j)
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y(ir) = y(ir) + alpha*val(i,j)*x(i)
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end do
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enddo
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end if
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else if (ctra) then
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|
|
||
|
|
if (beta == szero) then
|
||
|
|
do i=1, m
|
||
|
|
y(i) = szero
|
||
|
|
end do
|
||
|
|
else if (beta == sone) then
|
||
|
|
! Do nothing
|
||
|
|
else if (beta == -sone) then
|
||
|
|
do i=1, m
|
||
|
|
y(i) = -y(i)
|
||
|
|
end do
|
||
|
|
else
|
||
|
|
do i=1, m
|
||
|
|
y(i) = beta*y(i)
|
||
|
|
end do
|
||
|
|
end if
|
||
|
|
|
||
|
|
!
|
||
|
|
! Need to think about this.
|
||
|
|
! Transpose does not mix well with ELLPACK.
|
||
|
|
!
|
||
|
|
if (alpha == sone) then
|
||
|
|
|
||
|
|
do i=1,n
|
||
|
|
do j=1,nc
|
||
|
|
ir = ja(i,j)
|
||
|
|
y(ir) = y(ir) + (val(i,j))*x(i)
|
||
|
|
end do
|
||
|
|
enddo
|
||
|
|
|
||
|
|
else if (alpha == -sone) then
|
||
|
|
|
||
|
|
do i=1,n
|
||
|
|
do j=1,nc
|
||
|
|
ir = ja(i,j)
|
||
|
|
y(ir) = y(ir) - (val(i,j))*x(i)
|
||
|
|
end do
|
||
|
|
enddo
|
||
|
|
|
||
|
|
else
|
||
|
|
|
||
|
|
do i=1,n
|
||
|
|
do j=1,nc
|
||
|
|
ir = ja(i,j)
|
||
|
|
y(ir) = y(ir) + alpha*(val(i,j))*x(i)
|
||
|
|
end do
|
||
|
|
enddo
|
||
|
|
|
||
|
|
end if
|
||
|
|
|
||
|
|
endif
|
||
|
|
|
||
|
|
if (is_unit) then
|
||
|
|
do i=1, min(m,n)
|
||
|
|
y(i) = y(i) + alpha*x(i)
|
||
|
|
end do
|
||
|
|
end if
|
||
|
|
|
||
|
|
|
||
|
|
end subroutine psb_s_ell_csmv_inner
|
||
|
|
|
||
|
|
end subroutine psb_s_ell_csmv
|