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https://github.com/OPM/opm-simulators.git
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110 lines
4.1 KiB
C++
110 lines
4.1 KiB
C++
/*
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Copyright 2024 Equinor ASA
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_GPUISTL_KERNEL_ENUMS_HPP
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#define OPM_GPUISTL_KERNEL_ENUMS_HPP
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#include <cuda_runtime.h>
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/*
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This file organizes a growing amount of different mixed precision options for the preconditioners.
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*/
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namespace Opm::gpuistl {
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// Mixed precision schemes used for storing the matrix in GPU memory
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enum class MatrixStorageMPScheme {
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DOUBLE_DIAG_DOUBLE_OFFDIAG = 0, // full precision should be default
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FLOAT_DIAG_FLOAT_OFFDIAG = 1,
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DOUBLE_DIAG_FLOAT_OFFDIAG = 2
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};
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namespace detail {
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bool isValidMatrixStorageMPScheme(int scheme);
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}
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inline MatrixStorageMPScheme makeMatrixStorageMPScheme(int scheme) {
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if (!detail::isValidMatrixStorageMPScheme(scheme)) {
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OPM_THROW(std::invalid_argument,
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fmt::format("Invalid matrix storage mixed precision scheme chosen: {}.\n"
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"Valid Schemes:\n"
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"\t0: DOUBLE_DIAG_DOUBLE_OFFDIAG\n"
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"\t1: FLOAT_DIAG_FLOAT_OFFDIAG\n"
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"\t2: DOUBLE_DIAG_FLOAT_OFFDIAG",
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scheme));
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}
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return static_cast<MatrixStorageMPScheme>(scheme);
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}
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namespace detail {
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__host__ __device__ constexpr bool storeDiagonalAsFloat(MatrixStorageMPScheme scheme) {
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switch (scheme) {
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case MatrixStorageMPScheme::DOUBLE_DIAG_DOUBLE_OFFDIAG:
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return false;
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case MatrixStorageMPScheme::FLOAT_DIAG_FLOAT_OFFDIAG:
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return true;
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case MatrixStorageMPScheme::DOUBLE_DIAG_FLOAT_OFFDIAG:
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return false;
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default:
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return false;
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}
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}
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__host__ __device__ constexpr bool storeOffDiagonalAsFloat(MatrixStorageMPScheme scheme) {
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switch (scheme) {
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case MatrixStorageMPScheme::DOUBLE_DIAG_DOUBLE_OFFDIAG:
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return false;
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case MatrixStorageMPScheme::FLOAT_DIAG_FLOAT_OFFDIAG:
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return true;
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case MatrixStorageMPScheme::DOUBLE_DIAG_FLOAT_OFFDIAG:
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return true;
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default:
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return false;
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}
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}
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// returns true if we use anything else that the the default double precision for everything
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__host__ __device__ constexpr bool usingMixedPrecision(MatrixStorageMPScheme scheme) {
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switch (scheme) {
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case MatrixStorageMPScheme::DOUBLE_DIAG_DOUBLE_OFFDIAG:
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return false;
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case MatrixStorageMPScheme::FLOAT_DIAG_FLOAT_OFFDIAG:
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return true;
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case MatrixStorageMPScheme::DOUBLE_DIAG_FLOAT_OFFDIAG:
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return true;
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default:
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return false;
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}
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}
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inline bool isValidMatrixStorageMPScheme(int scheme) {
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switch (static_cast<MatrixStorageMPScheme>(scheme)) {
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case MatrixStorageMPScheme::DOUBLE_DIAG_DOUBLE_OFFDIAG:
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case MatrixStorageMPScheme::FLOAT_DIAG_FLOAT_OFFDIAG:
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case MatrixStorageMPScheme::DOUBLE_DIAG_FLOAT_OFFDIAG:
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return true;
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default:
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return false;
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}
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}
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}
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}
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#endif // OPM_GPUISTL_KERNEL_ENUMS_HPP
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