! 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_z_hll_csmm(alpha,a,x,beta,y,info,trans)
use psb_base_mod
use psb_z_hll_mat_mod, psb_protect_name => psb_z_hll_csmm
implicit none
class(psb_z_hll_sparse_mat), intent(in) :: a
complex(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
complex(psb_dpk_), 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,ldx,ldy,hksz,mxrwl
complex(psb_dpk_), allocatable :: acc(:)
logical :: tra, ctra
Integer(Psb_ipk_) :: err_act
character(len=20) :: name='z_hll_csmm'
logical, parameter :: debug=.false.
info = psb_success_
call psb_erractionsave(err_act)
if (present(trans)) then
trans_ = trans
else
trans_ = 'N'
end if
nxy = min(size(x,2) , size(y,2) )
ldx = size(x,1)
ldy = size(y,1)
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()
if (ldx<n) then
info = 36
call psb_errpush(info,name,i_err=(/3*ione,n/))
goto 9999
end if
if (ldy<m) then
info = 36
call psb_errpush(info,name,i_err=(/5*ione,m/))
goto 9999
end if
if (beta == zzero) then
do i = 1, m
y(i,1:nxy) = zzero
enddo
else
do i = 1, m
y(i,1:nxy) = beta*y(i,1:nxy)
end do
endif
hksz = a%get_hksz()
j=1
do i=1,n,hksz
ir = min(hksz,n-i+1)
mxrwl = (a%hkoffs(j+1) - a%hkoffs(j))/hksz
k = a%hkoffs(j) + 1
call psb_z_hll_csmm_inner(i,ir,nxy,mxrwl,a%irn(i),&
& alpha,a%ja(k),hksz,a%val(k),hksz,&
& a%is_triangle(),a%is_unit(),&
& x,ldx,zone,y,ldy,tra,ctra,info)
if (info /= psb_success_) goto 9999
j = j + 1
end do
else if (.not.tra) then
n = a%get_ncols()
m = a%get_nrows()
if (ldx<n) then
info = 36
call psb_errpush(info,name,i_err=(/3*ione,n/))
goto 9999
end if
if (ldy<m) then
info = 36
call psb_errpush(info,name,i_err=(/5*ione,m/))
goto 9999
end if
hksz = a%get_hksz()
j=1
do i=1,m,hksz
ir = min(hksz,m-i+1)
mxrwl = (a%hkoffs(j+1) - a%hkoffs(j))/hksz
k = a%hkoffs(j) + 1
call psb_z_hll_csmm_inner(i,ir,nxy,mxrwl,a%irn(i),&
& alpha,a%ja(k),hksz,a%val(k),hksz,&
& a%is_triangle(),a%is_unit(),&
& x,ldx,beta,y,ldy,tra,ctra,info)
if (info /= psb_success_) goto 9999
j = j + 1
end do
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
contains
subroutine psb_z_hll_csmm_inner(ir,m,nc,n,irn,alpha,ja,ldj,val,ldv,&
& is_triangle,is_unit,x,ldx,beta,y,ldy,tra,ctra,info)
integer(psb_ipk_), intent(in) :: ir,m,n,nc,ldj,ldv,ja(ldj,*),irn(*),ldx,ldy
complex(psb_dpk_), intent(in) :: alpha, beta, x(ldx,*),val(ldv,*)
complex(psb_dpk_), intent(inout) :: y(ldy,*)
logical, intent(in) :: is_triangle, is_unit, tra, ctra
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: i,j,k, m4, jc
complex(psb_dpk_) :: acc(4), tmp(nc)
info = psb_success_
if (tra) then
if (beta == zone) then
do i=1,m
do j=1, irn(i)
jc = ja(i,j)
y(jc,1:nc) = y(jc,1:nc) + alpha*val(i,j)*x(ir+i-1,1:nc)
end do
end do
else
info = -10
end if
else if (ctra) then
if (beta == zone) then
do i=1,m
do j=1, irn(i)
jc = ja(i,j)
y(jc,1:nc) = y(jc,1:nc) + alpha*conjg(val(i,j))*x(ir+i-1,1:nc)
end do
end do
else
info = -10
end if
else if (.not.(tra.or.ctra)) then
if (alpha == zzero) then
if (beta == zzero) then
do i=1,m
y(ir+i-1,1:nc) = zzero
end do
else
do i=1,m
y(ir+i-1,1:nc) = beta*y(ir+i-1,1:nc)
end do
end if
else
if (beta == zzero) then
do i=1,m
tmp(1:nc) = zzero
do j=1, irn(i)
tmp(1:nc) = tmp(1:nc) + val(i,j)*x(ja(i,j),1:nc)
end do
y(ir+i-1,1:nc) = alpha*tmp(1:nc)
end do
else
do i=1,m
tmp(1:nc) = zzero
do j=1, irn(i)
tmp(1:nc) = tmp(1:nc) + val(i,j)*x(ja(i,j),1:nc)
end do
y(ir+i-1,1:nc) = alpha*tmp(1:nc) + beta*y(ir+i-1,1:nc)
end do
endif
end if
end if
if (is_unit) then
do i=1, min(m,n)
y(ir+i-1,1:nc) = y(ir+i-1,1:nc) + alpha*x(ir+i-1,1:nc)
end do
end if
end subroutine psb_z_hll_csmm_inner
end subroutine psb_z_hll_csmm