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psblas3/cuda/impl/psb_c_cuda_cp_elg_from_coo.F90

162 lines
5.1 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_c_cuda_cp_elg_from_coo(a,b,info)
use psb_base_mod
use elldev_mod
use psb_vectordev_mod
use psb_c_cuda_elg_mat_mod, psb_protect_name => psb_c_cuda_cp_elg_from_coo
use psi_ext_util_mod
use psb_cuda_env_mod
implicit none
class(psb_c_cuda_elg_sparse_mat), intent(inout) :: a
class(psb_c_coo_sparse_mat), intent(in) :: b
integer(psb_ipk_), intent(out) :: info
!locals
Integer(Psb_ipk_) :: nza, nr, i,j,k, idl,err_act, nc, nzm, &
& ir, ic, ld, ldv, hacksize
integer(psb_ipk_) :: debug_level, debug_unit
character(len=20) :: name
type(psb_c_coo_sparse_mat) :: tmp
integer(psb_ipk_), allocatable :: idisp(:)
info = psb_success_
hacksize = max(1,psb_cuda_WarpSize())
if (b%is_dev()) call b%sync()
if (b%is_by_rows()) then
call psi_c_count_ell_from_coo(a,b,idisp,ldv,nzm,info,hacksize=hacksize)
if (c_associated(a%deviceMat)) then
call freeEllDevice(a%deviceMat)
endif
nr = b%get_nrows()
nc = b%get_ncols()
nza = b%get_nzeros()
info = FallocEllDevice(a%deviceMat,nr,nzm,nza,nc,spgpu_type_double,1)
if (info == 0) info = psi_CopyCooToElg(nr,nc,nza, hacksize,ldv,nzm, &
& a%irn,idisp,b%ja,b%val, a%deviceMat)
call a%set_dev()
else
call b%cp_to_coo(tmp,info)
call psi_c_count_ell_from_coo(a,tmp,idisp,ldv,nzm,info,hacksize=hacksize)
if (c_associated(a%deviceMat)) then
call freeEllDevice(a%deviceMat)
endif
nr = b%get_nrows()
nc = b%get_ncols()
nza = b%get_nzeros()
info = FallocEllDevice(a%deviceMat,nr,nzm,nza,nc,spgpu_type_double,1)
if (info == 0) info = psi_CopyCooToElg(nr,nc,nza, hacksize,ldv,nzm, &
& a%irn,idisp,tmp%ja,tmp%val, a%deviceMat)
call a%set_dev()
end if
if (info /= psb_success_) goto 9999
return
9999 continue
info = psb_err_alloc_dealloc_
return
contains
subroutine psi_c_count_ell_from_coo(a,b,idisp,ldv,nzm,info,hacksize)
use psb_base_mod
use psi_ext_util_mod
implicit none
class(psb_c_ell_sparse_mat), intent(inout) :: a
class(psb_c_coo_sparse_mat), intent(in) :: b
integer(psb_ipk_), allocatable, intent(out) :: idisp(:)
integer(psb_ipk_), intent(out) :: info, nzm, ldv
integer(psb_ipk_), intent(in), optional :: hacksize
!locals
Integer(Psb_ipk_) :: nza, nr, i,j,k, idl,err_act, nc, &
& ir, ic, hsz_
real(psb_dpk_) :: t0,t1
logical, parameter :: timing=.true.
info = psb_success_
nr = b%get_nrows()
nc = b%get_ncols()
nza = b%get_nzeros()
hsz_ = 1
if (present(hacksize)) then
if (hacksize> 1) hsz_ = hacksize
end if
! Make ldv a multiple of hacksize
ldv = ((nr+hsz_-1)/hsz_)*hsz_
! If it is sorted then we can lessen memory impact
a%psb_c_base_sparse_mat = b%psb_c_base_sparse_mat
! First compute the number of nonzeros in each row.
call psb_realloc(nr,a%irn,info)
if (info == psb_success_) call psb_realloc(nr+1,idisp,info)
if (info /= psb_success_) return
if (timing) t0=psb_wtime()
a%irn = 0
do i=1, nza
ir = b%ia(i)
a%irn(ir) = a%irn(ir) + 1
end do
nzm = 0
a%nzt = 0
idisp(1) = 0
do i=1,nr
nzm = max(nzm,a%irn(i))
a%nzt = a%nzt + a%irn(i)
idisp(i+1) = a%nzt
end do
end subroutine psi_c_count_ell_from_coo
end subroutine psb_c_cuda_cp_elg_from_coo