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This PR ports Jacobi to dpc++, but it only supports the 32 for block_size. Related PR: #929
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| /*******************************<GINKGO LICENSE>****************************** | ||
| Copyright (c) 2017-2022, the Ginkgo authors | ||
| All rights reserved. | ||
| 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. Neither the name of the copyright holder nor the names of its | ||
| contributors may be used to endorse or promote products derived from | ||
| this software without specific prior 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 COPYRIGHT | ||
| HOLDER OR 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. | ||
| ******************************<GINKGO LICENSE>*******************************/ | ||
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| #ifndef GKO_DPCPP_COMPONENTS_DIAGONAL_BLOCK_MANIPULATION_DP_HPP_ | ||
| #define GKO_DPCPP_COMPONENTS_DIAGONAL_BLOCK_MANIPULATION_DP_HPP_ | ||
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| #include <type_traits> | ||
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| #include <CL/sycl.hpp> | ||
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| #include "dpcpp/base/config.hpp" | ||
| #include "dpcpp/base/dpct.hpp" | ||
| #include "dpcpp/components/cooperative_groups.dp.hpp" | ||
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| namespace gko { | ||
| namespace kernels { | ||
| namespace dpcpp { | ||
| namespace csr { | ||
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| /** | ||
| * @internal | ||
| * | ||
| * @note assumes that block dimensions are in "standard format": | ||
| * (subwarp_size, config::warp_size / subwarp_size, z) | ||
| */ | ||
| template < | ||
| int max_block_size, int warps_per_block, typename Group, typename ValueType, | ||
| typename IndexType, | ||
| typename = std::enable_if_t<group::is_synchronizable_group<Group>::value>> | ||
| __dpct_inline__ void extract_transposed_diag_blocks( | ||
| const Group& group, int processed_blocks, | ||
| const IndexType* __restrict__ row_ptrs, | ||
| const IndexType* __restrict__ col_idxs, | ||
| const ValueType* __restrict__ values, | ||
| const IndexType* __restrict__ block_ptrs, size_type num_blocks, | ||
| ValueType* __restrict__ block_row, int increment, | ||
| ValueType* __restrict__ workspace, sycl::nd_item<3> item_ct1) | ||
| { | ||
| const int tid = | ||
| item_ct1.get_local_id(1) * item_ct1.get_local_range().get(2) + | ||
| item_ct1.get_local_id(2); | ||
| const auto warp = group::tiled_partition<config::warp_size>(group); | ||
| auto bid = static_cast<size_type>(item_ct1.get_group(2)) * warps_per_block * | ||
| processed_blocks + | ||
| item_ct1.get_local_id(0) * processed_blocks; | ||
| auto bstart = (bid < num_blocks) ? block_ptrs[bid] : zero<IndexType>(); | ||
| IndexType bsize = 0; | ||
| #pragma unroll | ||
| for (int b = 0; b < processed_blocks; ++b, ++bid) { | ||
| if (bid < num_blocks) { | ||
| bstart += bsize; | ||
| bsize = block_ptrs[bid + 1] - bstart; | ||
| #pragma unroll | ||
| for (int i = 0; i < max_block_size; ++i) { | ||
| if (i < bsize) { | ||
| if (item_ct1.get_local_id(1) == b && | ||
| item_ct1.get_local_id(2) < max_block_size) { | ||
| workspace[item_ct1.get_local_id(2)] = zero<ValueType>(); | ||
| } | ||
| warp.sync(); | ||
| const auto row = bstart + i; | ||
| const auto rstart = row_ptrs[row] + tid; | ||
| const auto rend = row_ptrs[row + 1]; | ||
| // use the entire warp to ensure coalesced memory access | ||
| for (auto j = rstart; j < rend; j += config::warp_size) { | ||
| const auto col = col_idxs[j] - bstart; | ||
| if (col >= bsize) { | ||
| break; | ||
| } | ||
| if (col >= 0) { | ||
| workspace[col] = values[j]; | ||
| } | ||
| } | ||
| warp.sync(); | ||
| if (item_ct1.get_local_id(1) == b && | ||
| item_ct1.get_local_id(2) < bsize) { | ||
| block_row[i * increment] = | ||
| workspace[item_ct1.get_local_id(2)]; | ||
| } | ||
| warp.sync(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| } // namespace csr | ||
| } // namespace dpcpp | ||
| } // namespace kernels | ||
| } // namespace gko | ||
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| #endif // GKO_DPCPP_COMPONENTS_DIAGONAL_BLOCK_MANIPULATION_DP_HPP_ |
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