!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! Copyright (C) 2020 Advanced Micro Devices, Inc. All rights Reserved. ! ! 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_csric0 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_csr_row_ptr(7), h_csr_col_ind(20) real(8), target :: h_csr_val(20) type(c_ptr) :: d_csr_row_ptr type(c_ptr) :: d_csr_col_ind type(c_ptr) :: d_csr_val type(c_ptr) :: temp_buffer integer :: i, j, k integer(c_int) :: M, N, nnz integer(c_int) :: stat integer(c_int), target :: pivot integer(c_size_t), target :: buffer_size type(c_ptr) :: handle type(c_ptr) :: descr type(c_ptr) :: info integer :: version character(len=12) :: rev ! Input data ! ( 3 0 -1 -1 0 -1 ) ! ( 0 2 0 -1 0 0 ) ! ( -1 0 3 0 -1 0 ) ! A = ( -1 -1 0 2 0 -1 ) ! ( 0 0 -1 0 3 -1 ) ! ( -1 0 0 -1 -1 4 ) ! Number of rows and columns M = 6 N = 6 ! Number of non-zero entries nnz = 20 ! Fill CSR structure h_csr_row_ptr = (/0, 4, 6, 9, 13, 16, 20/) h_csr_col_ind = (/0, 2, 3, 5, 1, 3, 0, 2, 4, 0, 1, 3, 5, 2, 4, 5, 0, 3, 4, 5/) h_csr_val = (/3, -1, -1, -1, 2, -1, -1, 3, -1, -1, -1, 2, -1, -1, 3, -1, -1, -1, -1, 4/) ! Allocate device memory call HIP_CHECK(hipMalloc(d_csr_row_ptr, (int(M, c_size_t) + 1) * 4)) call HIP_CHECK(hipMalloc(d_csr_col_ind, int(nnz, c_size_t) * 4)) call HIP_CHECK(hipMalloc(d_csr_val, int(nnz, c_size_t) * 8)) ! Copy host data to device call HIP_CHECK(hipMemcpy(d_csr_row_ptr, c_loc(h_csr_row_ptr), (int(M, c_size_t) + 1) * 4, 1)) call HIP_CHECK(hipMemcpy(d_csr_col_ind, c_loc(h_csr_col_ind), int(nnz, c_size_t) * 4, 1)) call HIP_CHECK(hipMemcpy(d_csr_val, c_loc(h_csr_val), int(nnz, 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)) ! Create matrix info structure call ROCSPARSE_CHECK(rocsparse_create_mat_info(info)) ! Obtain required buffer size call ROCSPARSE_CHECK(rocsparse_dcsric0_buffer_size(handle, & M, & nnz, & descr, & d_csr_val, & d_csr_row_ptr, & d_csr_col_ind, & 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_dcsric0_analysis(handle, & M, & nnz, & descr, & d_csr_val, & d_csr_row_ptr, & d_csr_col_ind, & info, & rocsparse_analysis_policy_reuse, & rocsparse_solve_policy_auto, & temp_buffer)) ! Call dcsric0 to perform incomplete Cholesky factorization call ROCSPARSE_CHECK(rocsparse_dcsric0(handle, & M, & nnz, & descr, & d_csr_val, & d_csr_row_ptr, & d_csr_col_ind, & info, & rocsparse_solve_policy_auto, & temp_buffer)) ! Check for zero pivots stat = rocsparse_csric0_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_csr_val), d_csr_val, int(nnz, c_size_t) * 8, 2)) write(*,fmt='(A)') "Incomplete Cholesky factorization:" do i = 1, M k = h_csr_row_ptr(i) + 1 do j = 1, i if(j .eq. h_csr_col_ind(k) + 1) then write(*,fmt='(A,F6.2)',advance='no') ' ', h_csr_val(k) k = k + 1 else write(*,fmt='(A,F6.2)',advance='no') ' ', 0.0 end if end do write(*,*) 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_csr_row_ptr)) call HIP_CHECK(hipFree(d_csr_col_ind)) call HIP_CHECK(hipFree(d_csr_val)) call HIP_CHECK(hipFree(temp_buffer)) end program example_fortran_csric0