49 lines
1.6 KiB
ReStructuredText
49 lines
1.6 KiB
ReStructuredText
================================================================================
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SIMD sorting
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================================================================================
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Overview
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--------------------------------------------------
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This repository contains SIMD versions of quicksort, using **AVX512F**
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and **AVX2** instruction sets. The subdirectory ``results`` contains
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performance results.
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The code is still unfinished, it may be subject of changes.
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Although programs are written in C++, most procedures are nearly
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plain C, except use of namespaces and references in place of
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pointers.
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Building
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--------------------------------------------------
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At least GCC 5.3.0 is needed. Type ``make`` to build AVX512F
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and AVX2 versions of two programs:
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* ``test``/``test_avx2`` --- tests if SIMD-ized sorting procedures
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work correctly for various inputs.
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* ``speed``/``speed_avx2`` --- compares speed of different procedures,
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scalar and SIMD for various inputs.
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* ``speed_stats``/``speed_avx2_stats`` --- similar to ``speed``, but
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some procedures collect and print runtime statistics. Note that
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this gives overhead, so for real performance tests the basic variant
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of the programs should be used.
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AVX512
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--------------------------------------------------
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`Intel Software Development Emulator`__ can be used to run AVX512 variants.
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__ https://software.intel.com/en-us/articles/intel-software-development-emulator
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References
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--------------------------------------------------
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- Fast Sorting Algorithms using AVX-512 on Intel Knights Landing https://arxiv.org/pdf/1704.08579.pdf
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