!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! Copyright (c) 2020 Advanced Micro Devices, Inc. ! ! Permission is hereby granted, free of charge, to any person obtaining a copy ! of this software and associated documentation files (the "Software"), to deal ! in the Software without restriction, including without limitation the rights ! to use, copy, modify, merge, publish, distribute, sublicense, and/or sell ! copies of the Software, and to permit persons to whom the Software is ! furnished to do so, subject to the following conditions: ! ! The above copyright notice and this permission notice shall be included in ! all copies or substantial portions of the Software. ! ! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR ! IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ! FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE ! 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THE SOFTWARE. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! subroutine HIP_CHECK(stat) use iso_c_binding implicit none integer(c_int) :: stat if(stat /= 0) then write(*,*) 'Error: hip error' stop end if end subroutine HIP_CHECK subroutine ROCSPARSE_CHECK(stat) use iso_c_binding implicit none integer(c_int) :: stat if(stat /= 0) then write(*,*) 'Error: rocsparse error' stop end if end subroutine ROCSPARSE_CHECK program example_fortran_bsrsv use iso_c_binding use rocsparse implicit none interface function hipMalloc(ptr, size) & bind(c, name = 'hipMalloc') use iso_c_binding implicit none integer :: hipMalloc type(c_ptr) :: ptr integer(c_size_t), value :: size end function hipMalloc function hipFree(ptr) & bind(c, name = 'hipFree') use iso_c_binding implicit none integer :: hipFree type(c_ptr), value :: ptr end function hipFree function hipMemcpy(dst, src, size, kind) & bind(c, name = 'hipMemcpy') use iso_c_binding implicit none integer :: hipMemcpy type(c_ptr), value :: dst type(c_ptr), intent(in), value :: src integer(c_size_t), value :: size integer(c_int), value :: kind end function hipMemcpy function hipMemset(dst, val, size) & bind(c, name = 'hipMemset') use iso_c_binding implicit none integer :: hipMemset type(c_ptr), value :: dst integer(c_int), value :: val integer(c_size_t), value :: size end function hipMemset function hipDeviceSynchronize() & bind(c, name = 'hipDeviceSynchronize') use iso_c_binding implicit none integer :: hipDeviceSynchronize end function hipDeviceSynchronize function hipDeviceReset() & bind(c, name = 'hipDeviceReset') use iso_c_binding implicit none integer :: hipDeviceReset end function hipDeviceReset end interface integer, target :: h_bsr_row_ptr(3), h_bsr_col_ind(3) real(8), target :: h_bsr_val(12), h_x(4), h_y(4), h_y_gold(4) type(c_ptr) :: d_bsr_row_ptr type(c_ptr) :: d_bsr_col_ind type(c_ptr) :: d_bsr_val type(c_ptr) :: d_x type(c_ptr) :: d_y type(c_ptr) :: temp_buffer integer :: i integer(c_int) :: M, N, Mb, Nb, nnzb, bsr_dim integer(c_int) :: stat integer(c_int), target :: pivot integer(c_size_t), target :: buffer_size real(c_double), target :: alpha type(c_ptr) :: handle type(c_ptr) :: descr type(c_ptr) :: info integer :: version character(len=12) :: rev ! Input data ! ( 1 0 0 0 ) ! A = ( 2 3 0 0 ) ! ( 4 5 6 0 ) ! ( 7 0 8 9 ) ! Number of rows and columns M = 4 N = 4 ! Number of BSR block rows and block columns Mb = 2 Nb = 2 ! BSR block dimension bsr_dim = 2 ! Number of non-zero block entries nnzb = 3 ! Fill BSR structure h_bsr_row_ptr = (/0, 1, 3/) h_bsr_col_ind = (/0, 0, 1/) h_bsr_val = (/1, 2, 0, 3, 4, 7, 5, 0, 6, 8, 0, 9/) ! Scalar alpha alpha = 3.7 ! x vector h_x = (/1, 2, 3, 4/) ! Allocate device memory call HIP_CHECK(hipMalloc(d_bsr_row_ptr, (int(Mb, c_size_t) + 1) * 4)) call HIP_CHECK(hipMalloc(d_bsr_col_ind, int(nnzb, c_size_t) * 4)) call HIP_CHECK(hipMalloc(d_bsr_val, int(nnzb * bsr_dim * bsr_dim, c_size_t) * 8)) call HIP_CHECK(hipMalloc(d_x, int(Nb * bsr_dim, c_size_t) * 8)) call HIP_CHECK(hipMalloc(d_y, int(Mb * bsr_dim, c_size_t) * 8)) ! Copy host data to device call HIP_CHECK(hipMemcpy(d_bsr_row_ptr, c_loc(h_bsr_row_ptr), (int(Mb, c_size_t) + 1) * 4, 1)) call HIP_CHECK(hipMemcpy(d_bsr_col_ind, c_loc(h_bsr_col_ind), int(nnzb, c_size_t) * 4, 1)) call HIP_CHECK(hipMemcpy(d_bsr_val, c_loc(h_bsr_val), int(nnzb * bsr_dim * bsr_dim, c_size_t) * 8, 1)) call HIP_CHECK(hipMemcpy(d_x, c_loc(h_x), int(Nb * bsr_dim, c_size_t) * 8, 1)) ! Create rocSPARSE handle call ROCSPARSE_CHECK(rocsparse_create_handle(handle)) ! Get rocSPARSE version call ROCSPARSE_CHECK(rocsparse_get_version(handle, version)) call ROCSPARSE_CHECK(rocsparse_get_git_rev(handle, rev)) ! Print version on screen write(*,fmt='(A,I0,A,I0,A,I0,A,A)') 'rocSPARSE version: ', version / 100000, '.', & mod(version / 100, 1000), '.', mod(version, 100), '-', rev ! Create matrix descriptor call ROCSPARSE_CHECK(rocsparse_create_mat_descr(descr)) ! Matrix fill mode call ROCSPARSE_CHECK(rocsparse_set_mat_fill_mode(descr, rocsparse_fill_mode_lower)) ! Matrix diagonal type call ROCSPARSE_CHECK(rocsparse_set_mat_diag_type(descr, rocsparse_diag_type_unit)) ! Create matrix info structure call ROCSPARSE_CHECK(rocsparse_create_mat_info(info)) ! Obtain required buffer size call ROCSPARSE_CHECK(rocsparse_dbsrsv_buffer_size(handle, & rocsparse_direction_column, & rocsparse_operation_none, & Mb, & nnzb, & descr, & d_bsr_val, & d_bsr_row_ptr, & d_bsr_col_ind, & bsr_dim, & info, & c_loc(buffer_size))) ! Allocate temporary buffer write(*,fmt='(A,I0,A)') 'Allocating ', buffer_size / 1024, 'kB temporary storage buffer' call HIP_CHECK(hipMalloc(temp_buffer, buffer_size)) ! Perform analysis step call ROCSPARSE_CHECK(rocsparse_dbsrsv_analysis(handle, & rocsparse_direction_column, & rocsparse_operation_none, & Mb, & nnzb, & descr, & d_bsr_val, & d_bsr_row_ptr, & d_bsr_col_ind, & bsr_dim, & info, & rocsparse_analysis_policy_reuse, & rocsparse_solve_policy_auto, & temp_buffer)) ! Call dbsrsv to perform lower triangular solve Ly = x call ROCSPARSE_CHECK(rocsparse_dbsrsv_solve(handle, & rocsparse_direction_column, & rocsparse_operation_none, & Mb, & nnzb, & c_loc(alpha), & descr, & d_bsr_val, & d_bsr_row_ptr, & d_bsr_col_ind, & bsr_dim, & info, & d_x, & d_y, & rocsparse_solve_policy_auto, & temp_buffer)) ! Check for zero pivots stat = rocsparse_bsrsv_zero_pivot(handle, info, c_loc(pivot)) if(stat .eq. rocsparse_status_zero_pivot) then write(*,fmt='(A,I0)') 'Found zero pivot in matrix row ', pivot end if ! Print result call HIP_CHECK(hipMemcpy(c_loc(h_y), d_y, int(Mb * bsr_dim, c_size_t) * 8, 2)) do i = 1, m write(*,fmt='(A,I0,A,F0.2)') 'y(', i, ') = ', h_y(i) end do ! Clear rocSPARSE call ROCSPARSE_CHECK(rocsparse_destroy_mat_info(info)) call ROCSPARSE_CHECK(rocsparse_destroy_mat_descr(descr)) call ROCSPARSE_CHECK(rocsparse_destroy_handle(handle)) ! Clear device memory call HIP_CHECK(hipFree(d_bsr_row_ptr)) call HIP_CHECK(hipFree(d_bsr_col_ind)) call HIP_CHECK(hipFree(d_bsr_val)) call HIP_CHECK(hipFree(d_x)) call HIP_CHECK(hipFree(d_y)) call HIP_CHECK(hipFree(temp_buffer)) end program example_fortran_bsrsv