55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <chrono>
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#include <initializer_list>
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#include <iomanip>
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#include <iostream>
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#ifdef _OPENMP
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#include <omp.h>
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#endif
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#include "./BenchUtils.h"
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#include "fbgemm/Fbgemm.h"
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#include "src/OptimizedKernelsAvx2.h"
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using namespace std;
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using namespace fbgemm;
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void performance_test() {
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constexpr int NWARMUP = 4;
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constexpr int NITER = 256;
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cout << setw(4) << "len" << ", B_elements_per_sec" << endl;
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for (int len : {1, 2, 3, 4, 5, 7, 8, 9, 15, 16, 17,
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31, 32, 33, 63, 64, 65, 127, 128, 129, 255, 256}) {
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aligned_vector<uint8_t> a(len);
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double duration =
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measureWithWarmup([&]() { reduceAvx2(a.data(), len); }, NWARMUP, NITER);
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duration *= 1e9; // convert to ns
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cout << setw(4) << len << ", " << setw(10) << setprecision(3)
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<< len / duration << endl;
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} // for each length
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} // performance_test
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int main() {
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#ifdef _OPENMP
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// Use 1 thread unless OMP_NUM_THREADS is explicit set.
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const char* val = getenv("OMP_NUM_THREADS");
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if (val == nullptr || !*val) {
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omp_set_num_threads(1);
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}
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#endif
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performance_test();
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return 0;
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}
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