! Parallel Sparse BLAS GPU plugin
! (C) Copyright 2013
!
! Salvatore Filippone
! Alessandro Fanfarillo
!
! 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_s_ell_csmm(alpha,a,x,beta,y,info,trans)
use psb_base_mod
use psb_s_ell_mat_mod, psb_protect_name => psb_s_ell_csmm
implicit none
class(psb_s_ell_sparse_mat), intent(in) :: a
real(psb_spk_), intent(in) :: alpha, beta, x(:,:)
real(psb_spk_), intent(inout) :: y(:,:)
integer(psb_ipk_), intent(out) :: info
character, optional, intent(in) :: trans
character :: trans_
integer(psb_ipk_) :: i,j,k,m,n, nnz, ir, jc, nxy
real(psb_spk_), allocatable :: acc(:)
logical :: tra, ctra
Integer(Psb_ipk_) :: err_act
character(len=20) :: name='s_ell_csmm'
logical, parameter :: debug=.false.
info = psb_success_
call psb_erractionsave(err_act)
if (present(trans)) then
trans_ = trans
else
trans_ = 'N'
end if
if (.not.a%is_asb()) then
info = psb_err_invalid_mat_state_
call psb_errpush(info,name)
goto 9999
endif
if (a%is_dev()) call a%sync()
tra = (psb_toupper(trans_) == 'T')
ctra = (psb_toupper(trans_) == 'C')
if (tra.or.ctra) then
m = a%get_ncols()
n = a%get_nrows()
else
n = a%get_ncols()
m = a%get_nrows()
end if
if (size(x,1)<n) then
info = 36
call psb_errpush(info,name,i_err=(/3*ione,n/))
goto 9999
end if
if (size(y,1)<m) then
info = 36
call psb_errpush(info,name,i_err=(/5*ione,m/))
goto 9999
end if
nxy = min(size(x,2) , size(y,2) )
allocate(acc(nxy), stat=info)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
call psb_errpush(info,name,a_err='allocate')
goto 9999
end if
call psb_s_ell_csmm_inner(m,n,nxy,alpha,size(a%ja,2,kind=psb_ipk_),&
& a%ja,size(a%ja,1,kind=psb_ipk_),a%val,size(a%val,1,kind=psb_ipk_), &
& a%is_triangle(),a%is_unit(),x,size(x,1,kind=psb_ipk_), &
& beta,y,size(y,1,kind=psb_ipk_),tra,ctra,acc)
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
contains
subroutine psb_s_ell_csmm_inner(m,n,nxy,alpha,nc,ja,ldj,val,ldv,&
& is_triangle,is_unit,x,ldx,beta,y,ldy,tra,ctra,acc)
integer(psb_ipk_), intent(in) :: m,n,ldx,ldy,nxy,nc,ldj,ldv
integer(psb_ipk_), intent(in) :: ja(ldj,*)
real(psb_spk_), intent(in) :: alpha, beta, x(ldx,*),val(ldv,*)
real(psb_spk_), intent(inout) :: y(ldy,*)
logical, intent(in) :: is_triangle,is_unit,tra, ctra
real(psb_spk_), intent(inout) :: acc(*)
integer(psb_ipk_) :: i,j,k, ir, jc
if (alpha == szero) then
if (beta == szero) then
do i = 1, m
y(i,1:nxy) = szero
enddo
else
do i = 1, m
y(i,1:nxy) = beta*y(i,1:nxy)
end do
endif
return
end if
if (.not.(tra.or.ctra)) then
if (beta == szero) then
if (alpha == sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = acc(1:nxy)
end do
else if (alpha == -sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) - val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = acc(1:nxy)
end do
else
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = alpha*acc(1:nxy)
end do
end if
else if (beta == sone) then
if (alpha == sone) then
do i=1,m
acc(1:nxy) = y(i,1:nxy)
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = acc(1:nxy)
end do
else if (alpha == -sone) then
do i=1,m
acc(1:nxy) = y(i,1:nxy)
do j=1,nc
acc(1:nxy) = acc(1:nxy) - val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = acc(1:nxy)
end do
else
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = y(i,1:nxy) + alpha*acc(1:nxy)
end do
end if
else if (beta == -sone) then
if (alpha == sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = -y(i,1:nxy) + acc(1:nxy)
end do
else if (alpha == -sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = -y(i,1:nxy) -acc(1:nxy)
end do
else
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = -y(i,1:nxy) + alpha*acc(1:nxy)
end do
end if
else
if (alpha == sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = beta*y(i,1:nxy) + acc(1:nxy)
end do
else if (alpha == -sone) then
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = beta*y(i,1:nxy) - acc(1:nxy)
end do
else
do i=1,m
acc(1:nxy) = szero
do j=1,nc
acc(1:nxy) = acc(1:nxy) + val(i,j) * x(ja(i,j),1:nxy)
enddo
y(i,1:nxy) = beta*y(i,1:nxy) + alpha*acc(1:nxy)
end do
end if
end if
else if (tra) then
if (beta == szero) then
do i=1, m
y(i,1:nxy) = szero
end do
else if (beta == sone) then
! Do nothing
else if (beta == -sone) then
do i=1, m
y(i,1:nxy) = -y(i,1:nxy)
end do
else
do i=1, m
y(i,1:nxy) = beta*y(i,1:nxy)
end do
end if
if (alpha == sone) then
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) + val(i,j)*x(i,1:nxy)
end do
enddo
else if (alpha == -sone) then
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) - val(i,j)*x(i,1:nxy)
end do
enddo
else
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) + alpha*val(i,j)*x(i,1:nxy)
end do
enddo
end if
else if (ctra) then
if (beta == szero) then
do i=1, m
y(i,1:nxy) = szero
end do
else if (beta == sone) then
! Do nothing
else if (beta == -sone) then
do i=1, m
y(i,1:nxy) = -y(i,1:nxy)
end do
else
do i=1, m
y(i,1:nxy) = beta*y(i,1:nxy)
end do
end if
if (alpha == sone) then
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) + (val(i,j))*x(i,1:nxy)
end do
enddo
else if (alpha == -sone) then
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) - (val(i,j))*x(i,1:nxy)
end do
enddo
else
do i=1,n
do j=1,nc
ir = ja(i,j)
y(ir,1:nxy) = y(ir,1:nxy) + alpha*(val(i,j))*x(i,1:nxy)
end do
enddo
end if
endif
if (is_unit) then
do i=1, min(m,n)
y(i,1:nxy) = y(i,1:nxy) + alpha*x(i,1:nxy)
end do
end if
end subroutine psb_s_ell_csmm_inner
end subroutine psb_s_ell_csmm