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psblas3/base/serial/impl/sp3mm_impl.f90

134 lines
4.9 KiB
Fortran

subroutine dspmm(a,b,c,info, impl_choice)
! TODO :
! * Split the C function into two subroutines:
! - Memory estimation
! - Actual computation
! * Call estimation function
! * Allocate c matrix arrays
! * pass the arrays as c pointers to the computation routine
use psb_d_mat_mod
use iso_c_binding
implicit none
type(psb_d_csr_sparse_mat), intent(in) :: a,b
type(psb_d_csr_sparse_mat), intent(inout):: c
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in) :: impl_choice
! Internal variables
integer(c_size_t):: a_m,a_n,a_nz
real(c_double), pointer :: a_as(:)
integer(c_size_t), pointer :: a_ja(:),a_irp(:)
type(c_ptr) :: a_as_ptr,a_ja_ptr,a_irp_ptr
integer(c_size_t) :: a_max_row_nz
integer(c_size_t) :: b_m,b_n,b_nz
real(c_double), pointer :: b_as(:)
integer(c_size_t), pointer :: b_ja(:),b_irp(:)
type(c_ptr) :: b_as_ptr,b_ja_ptr,b_irp_ptr
integer(c_size_t) :: b_max_row_nz
integer(c_int) :: impl_choice_
type(c_ptr) :: accumul, rows_sizes, tmp_matrix
integer(c_size_t) :: nnz
real(c_double), pointer :: c_as(:)
integer(c_size_t), pointer :: c_ja(:),c_irp(:)
type(c_ptr) :: c_as_ptr,c_ja_ptr,c_irp_ptr
interface spmm_build_spacc
subroutine psb_f_spmm_build_spacc(c_a_m,c_a_n,c_a_nz,&
c_a_as,c_a_ja,c_a_irp,&
c_a_max_row_nz,&
c_b_m,c_b_n,c_b_nz,&
c_b_as,c_b_ja,c_b_irp,&
c_b_max_row_nz,&
c_impl_choice,&
c_accumul,&
c_rows_sizes,&
c_tmp_matrix,&
c_info,&
c_nnz) bind(C)
use iso_c_binding
use psb_base_mod
integer(c_size_t), intent(in), value :: c_a_m,c_a_n,c_a_nz
type(c_ptr), intent(in) :: c_a_as,c_a_ja,c_a_irp
integer(c_size_t), intent(in), value :: c_a_max_row_nz
integer(c_size_t), intent(in), value :: c_b_m,c_b_n,c_b_nz
type(c_ptr), intent(in) :: c_b_as,c_b_ja,c_b_irp
integer(c_size_t), intent(in), value :: c_b_max_row_nz
integer(c_int), intent(in), value :: c_impl_choice
type(c_ptr), intent(out) :: c_accumul,c_rows_sizes,c_tmp_matrix
integer(psb_ipk_), intent(out) :: c_info
integer(c_size_t), intent(out) :: c_nnz
end subroutine psb_f_spmm_build_spacc
end interface spmm_build_spacc
interface spmm_row_by_row_populate
subroutine psb_f_spmm_merge_spacc(c_accumul,&
c_rows_sizes,&
c_tmp_matrix,&
c_impl_choice,&
c_as,c_ja,c_irp,&
c_info) bind(C)
use iso_c_binding
use psb_base_mod
type(c_ptr), intent(in) :: c_accumul,c_rows_sizes,c_tmp_matrix
integer(c_int), intent(in), value :: c_impl_choice
integer(psb_ipk_), intent(out) :: c_info
type(c_ptr), intent(out) :: c_as,c_ja,c_irp
end subroutine psb_f_spmm_merge_spacc
end interface spmm_row_by_row_populate
! Initializing internal variables
a_m = a%get_nrows()
a_n = a%get_ncols()
a_nz = a%get_nzeros()
a_as = a%val
a_as_ptr = c_loc(a_as)
a_ja = a%ja
a_ja_ptr = c_loc(a_ja)
a_irp = a%irp
a_irp_ptr = c_loc(a_irp)
! ! a_max_row_nz
b_m = b%get_nrows()
b_n = b%get_ncols()
b_nz = b%get_nzeros()
b_as = b%val
b_as_ptr = c_loc(b_as)
b_ja = b%ja
b_ja_ptr = c_loc(b_ja)
b_irp = b%irp
b_irp_ptr = c_loc(b_irp)
! call calculateSize
call psb_f_spmm_build_spacc(a_m,a_n,a_nz,a_as_ptr,&
a_ja_ptr,a_irp_ptr,a_max_row_nz,&
b_m,b_n,b_nz,b_as_ptr,b_ja_ptr,&
b_irp_ptr,b_max_row_nz,&
impl_choice_,accumul,&
rows_sizes,tmp_matrix,&
info,nnz)
! allocate c%val, c%ja and c%irp
allocate(c%val(nnz))
allocate(c%ja(nnz))
allocate(c%irp(a_m + 1))
c_as = c%val
c_as_ptr = c_loc(c_as)
c_ja = c%ja
c_ja_ptr = c_loc(c_ja)
c_irp = c%irp
c_irp_ptr = c_loc(c_irp)
! c%set_nrows(a_m)
! c%set_ncols(b_n)
! call spmmRowByRowPopulate
call psb_f_spmm_merge_spacc(accumul,&
rows_sizes,&
tmp_matrix,&
impl_choice_,&
c_as_ptr,&
c_ja_ptr,&
c_irp_ptr,&
info)
end subroutine dspmm