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Adds x86-simd-sort as a submodule to accelerate sorting for 32-bit and 64-bit datatypes when AVX2 or AVX512 are available. For contiguous data, this can be over a 10x speedup for large arrays. For discontiguous data, it can give over a 4x speedup with larger arrays. These benchmarks were gathered on a Skylake system (7900x), limited to 8 threads. <details> <summary><b>Contiguous Benchmarks</b></summary> ``` float32, normally distributed (in microseconds) size Default AVX2 AVX512 Default/AVX2 Default/AVX512 16 7.150844336 6.886271477 7.132277489 1.038420335 1.002603214 128 9.208030939 8.478154898 7.846915245 1.086089019 1.173458697 1024 37.79037627 23.60707456 16.44122627 1.600807257 2.298513241 10000 714.7355628 203.9921844 105.5683001 3.503739934 6.770361577 100000 8383.074408 721.6333354 465.3709247 11.61680593 18.01374766 1000000 97124.31945 5632.054572 3920.148401 17.24491803 24.77567416 10000000 1161974.907 86070.48988 71533.82301 13.50027063 16.24371323 int32_t, uniformly distributed (in microseconds) size Default AVX2 AVX512 Default/AVX2 Default/AVX512 16 7.203208685 6.92212224 7.014458179 1.040606975 1.026908779 128 8.972388983 8.195516348 7.592543125 1.094792396 1.18173698 1024 32.77489477 23.6874548 15.36617105 1.383639359 2.132925285 10000 607.8824128 193.3402024 99.25090471 3.144107667 6.124703997 100000 523.9384684 608.1836536 442.3166784 0.861480682 1.184532472 1000000 5211.348627 5271.598405 3518.861883 0.988570871 1.480975611 10000000 133853.6263 81463.05084 67852.97394 1.643120714 1.972700952 ``` </details> Note that the int32_t sort is accelerated by FBGEMM's radix sort for larger arrays, but this only handles contiguous data and in one sorting direction. <details> <summary><b>Discontiguous Benchmarks</b></summary> ``` float, normal distributed, discontiguous in sorted dimension (in microseconds) size Default AVX2 AVX512 Default/AVX2 Default/AVX512 16 3.836543679 4.011214256 3.84376061 0.956454439 0.99812243 128 5.755310194 5.755723127 4.820394962 0.999928257 1.193949923 1024 49.46946019 24.78790785 15.47874362 1.995709379 3.195960952 10000 665.2505291 236.6165959 143.9490662 2.811512551 4.621429974 100000 4328.002203 1329.001212 818.3516414 3.256582586 5.288682743 1000000 47651.5018 16693.72045 11827.39551 2.854456677 4.028909133 10000000 556655.1288 236252.6258 184215.9828 2.356185998 3.021752621 int32_t, uniformly distributed, discontiguous in sorted dimension (in microseconds) size Default AVX2 AVX512 Default/AVX2 Default/AVX512 16 3.817994356 3.878117442 3.770039797 0.984496837 1.012719908 128 5.578731397 5.577152082 4.716770534 1.000283176 1.182743862 1024 43.3412619 23.61275801 14.55446819 1.835501887 2.977866408 10000 634.3997478 224.4322851 133.9518324 2.826686667 4.736028889 100000 4084.358152 1292.363303 781.7867576 3.16037924 5.22438902 1000000 46262.20465 16608.35284 11367.51817 2.785478192 4.06968381 10000000 541231.9104 235185.1861 180249.9294 2.301301028 3.002674742 ``` </details> Pull Request resolved: https://github.com/pytorch/pytorch/pull/127936 Approved by: https://github.com/jgong5, https://github.com/peterbell10, https://github.com/sanchitintel
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Copyright [yyyy] [name of copyright owner]
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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=======================================================================
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PILLOW-SIMD Software License
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=======================================================================
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Code derived from implementations in PILLOW-SIMD should mention its derivation
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and reference the following license:
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The Python Imaging Library (PIL) is
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Copyright © 1997-2011 by Secret Labs AB
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Copyright © 1995-2011 by Fredrik Lundh
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Pillow is the friendly PIL fork. It is
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Copyright © 2010-2022 by Alex Clark and contributors
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Like PIL, Pillow is licensed under the open source HPND License:
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By obtaining, using, and/or copying this software and/or its associated
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documentation, you agree that you have read, understood, and will comply
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with the following terms and conditions:
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Permission to use, copy, modify, and distribute this software and its
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associated documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appears in all copies, and that
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both that copyright notice and this permission notice appear in supporting
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documentation, and that the name of Secret Labs AB or the author not be
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used in advertising or publicity pertaining to distribution of the software
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without specific, written prior permission.
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SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR BE LIABLE FOR ANY SPECIAL,
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INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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=======================================================================
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x86-simd-sort BSD 3-Clause License
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=======================================================================
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Code derived from implementations in x86-simd-sort should mention its
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derivation and reference the following license:
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Copyright (c) 2022, Intel. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |