You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
376 lines
9.6 KiB
Fortran
376 lines
9.6 KiB
Fortran
! 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_d_ell_cssm(alpha,a,x,beta,y,info,trans)
|
|
|
|
use psb_base_mod
|
|
use psb_d_ell_mat_mod, psb_protect_name => psb_d_ell_cssm
|
|
implicit none
|
|
class(psb_d_ell_sparse_mat), intent(in) :: a
|
|
real(psb_dpk_), intent(in) :: alpha, beta, x(:,:)
|
|
real(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
|
|
real(psb_dpk_), allocatable :: tmp(:,:), acc(:)
|
|
logical :: tra, ctra
|
|
Integer(Psb_ipk_) :: err_act
|
|
character(len=20) :: name='d_ell_cssm'
|
|
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')
|
|
m = a%get_nrows()
|
|
|
|
if (.not. (a%is_triangle().and.a%is_sorted())) then
|
|
info = psb_err_invalid_mat_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
if (size(x,1)<m) then
|
|
info = 36
|
|
call psb_errpush(info,name,i_err=(/3*ione,m/))
|
|
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))
|
|
|
|
if (alpha == dzero) then
|
|
if (beta == dzero) then
|
|
do i = 1, m
|
|
y(i,:) = dzero
|
|
enddo
|
|
else
|
|
do i = 1, m
|
|
y(i,:) = beta*y(i,:)
|
|
end do
|
|
endif
|
|
return
|
|
end if
|
|
|
|
if (beta == dzero) then
|
|
allocate(acc(nxy), stat=info)
|
|
if (info /= psb_success_) then
|
|
info = psb_err_alloc_dealloc_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
call inner_ellsm(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),nxy,&
|
|
& size(a%ja,2,kind=psb_ipk_),a%irn,a%idiag,&
|
|
& a%ja,size(a%ja,1,kind=psb_ipk_),a%val,size(a%val,1,kind=psb_ipk_),&
|
|
& x,size(x,1,kind=psb_ipk_),y,size(y,1,kind=psb_ipk_),acc,info)
|
|
|
|
if (info /= 0) then
|
|
info = psb_err_invalid_mat_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
if (alpha == done) then
|
|
! do nothing
|
|
else if (alpha == -done) then
|
|
do i = 1, m
|
|
y(i,:) = -y(i,:)
|
|
end do
|
|
else
|
|
do i = 1, m
|
|
y(i,:) = alpha*y(i,:)
|
|
end do
|
|
end if
|
|
else
|
|
allocate(tmp(m,nxy),acc(nxy), stat=info)
|
|
if (info /= psb_success_) then
|
|
info = psb_err_alloc_dealloc_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
call inner_ellsm(tra,ctra,a%is_lower(),a%is_unit(),a%get_nrows(),nxy,&
|
|
& size(a%ja,2,kind=psb_ipk_),a%irn,a%idiag,&
|
|
& a%ja,size(a%ja,1,kind=psb_ipk_),a%val,size(a%val,1,kind=psb_ipk_),&
|
|
& x,size(x,1,kind=psb_ipk_),tmp,size(tmp,1,kind=psb_ipk_),acc,info)
|
|
|
|
if (info == 0) &
|
|
& call psb_geaxpby(m,nxy,alpha,tmp,beta,y,info)
|
|
|
|
if (info /= 0) then
|
|
info = psb_err_invalid_mat_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
|
|
contains
|
|
|
|
subroutine inner_ellsm(tra,ctra,lower,unit,n,nc,nxy,irn,idiag,ja,ldj,val,ldv,&
|
|
& x,ldx,y,ldy,acc,info)
|
|
implicit none
|
|
logical, intent(in) :: tra,ctra,lower,unit
|
|
integer(psb_ipk_), intent(in) :: n,nc,ldj,ldv,nxy,ldx,ldy
|
|
integer(psb_ipk_), intent(in) :: irn(*),idiag(*), ja(ldj,*)
|
|
real(psb_dpk_), intent(in) :: val(ldv,*)
|
|
real(psb_dpk_), intent(in) :: x(ldx,nxy)
|
|
real(psb_dpk_), intent(out) :: y(ldy,nxy), acc(nxy)
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
integer(psb_ipk_) :: i,j,k,m, ir, jc
|
|
|
|
!
|
|
! The only error condition here is if
|
|
! the matrix is non-unit and some idiag value is illegal.
|
|
!
|
|
info = 0
|
|
|
|
if (.not.(tra.or.ctra)) then
|
|
|
|
if (lower) then
|
|
|
|
if (unit) then
|
|
do i=1, n
|
|
acc = dzero
|
|
do j=1,irn(i)
|
|
acc = acc + val(i,j)*y(ja(i,j),:)
|
|
end do
|
|
y(i,:) = x(i,:) - acc
|
|
end do
|
|
else if (.not.unit) then
|
|
do i=1, n
|
|
acc = dzero
|
|
do j=1,idiag(i)-1
|
|
acc = acc + val(i,j)*y(ja(i,j),:)
|
|
end do
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = (x(i,:) - acc)/val(i,idiag(i))
|
|
end do
|
|
end if
|
|
|
|
else if (.not.lower) then
|
|
|
|
if (unit) then
|
|
|
|
do i=n, 1, -1
|
|
acc = dzero
|
|
do j=1,irn(i)
|
|
acc = acc + val(i,j)*y(ja(i,j),:)
|
|
end do
|
|
y(i,:) = x(i,:) - acc
|
|
end do
|
|
|
|
else if (.not.unit) then
|
|
|
|
do i=n, 1, -1
|
|
acc = dzero
|
|
do j=idiag(i)+1, irn(i)
|
|
acc = acc + val(i,j)*y(ja(i,j),:)
|
|
end do
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = (x(i,:) - acc)/val(i,idiag(i))
|
|
end do
|
|
|
|
end if
|
|
|
|
end if
|
|
|
|
else if (tra) then
|
|
|
|
do i=1, n
|
|
y(i,:) = x(i,:)
|
|
end do
|
|
|
|
if (lower) then
|
|
|
|
if (unit) then
|
|
|
|
do i=n, 1, -1
|
|
acc = y(i,:)
|
|
do j=1,irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - val(i,j)*acc
|
|
end do
|
|
|
|
end do
|
|
|
|
else if (.not.unit) then
|
|
|
|
do i=n, 1, -1
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = y(i,:)/val(i,idiag(i))
|
|
acc = y(i,:)
|
|
do j=1,idiag(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - val(i,j)*acc
|
|
end do
|
|
end do
|
|
|
|
end if
|
|
|
|
else if (.not.lower) then
|
|
|
|
if (unit) then
|
|
|
|
do i=1, n
|
|
acc = y(i,:)
|
|
do j=1, irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - val(i,j)*acc
|
|
end do
|
|
end do
|
|
|
|
else if (.not.unit) then
|
|
|
|
do i=1, n
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = y(i,:)/val(i,idiag(i))
|
|
acc = y(i,:)
|
|
do j=idiag(i)+1, irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - val(i,j)*acc
|
|
end do
|
|
end do
|
|
|
|
end if
|
|
|
|
end if
|
|
|
|
else if (ctra) then
|
|
|
|
do i=1, n
|
|
y(i,:) = x(i,:)
|
|
end do
|
|
|
|
if (lower) then
|
|
|
|
if (unit) then
|
|
|
|
do i=n, 1, -1
|
|
acc = y(i,:)
|
|
do j=1,irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - (val(i,j))*acc
|
|
end do
|
|
|
|
end do
|
|
|
|
else if (.not.unit) then
|
|
|
|
do i=n, 1, -1
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = y(i,:)/(val(i,idiag(i)))
|
|
acc = y(i,:)
|
|
do j=1,idiag(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - (val(i,j))*acc
|
|
end do
|
|
end do
|
|
|
|
end if
|
|
|
|
else if (.not.lower) then
|
|
|
|
if (unit) then
|
|
|
|
do i=1, n
|
|
acc = y(i,:)
|
|
do j=1, irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - (val(i,j))*acc
|
|
end do
|
|
end do
|
|
|
|
else if (.not.unit) then
|
|
|
|
do i=1, n
|
|
if (idiag(i) <= 0) then
|
|
info = -1
|
|
return
|
|
endif
|
|
y(i,:) = y(i,:)/(val(i,idiag(i)))
|
|
acc = y(i,:)
|
|
do j=idiag(i)+1, irn(i)
|
|
jc = ja(i,j)
|
|
y(jc,:) = y(jc,:) - (val(i,j))*acc
|
|
end do
|
|
end do
|
|
|
|
end if
|
|
|
|
end if
|
|
end if
|
|
end subroutine inner_ellsm
|
|
end subroutine psb_d_ell_cssm
|