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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
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#include <iostream>
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#include <Eigen/Core>
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#include <bench/BenchUtil.h>
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using namespace Eigen;
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#ifndef REPEAT
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#define REPEAT 100000
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#endif
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#ifndef TRIES
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#define TRIES 20
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#endif
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typedef double Scalar;
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template <typename MatrixType>
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__attribute__((noinline)) void bench_reverse(const MatrixType& m) {
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int rows = m.rows();
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int cols = m.cols();
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int size = m.size();
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int repeats = (REPEAT * 1000) / size;
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MatrixType a = MatrixType::Random(rows, cols);
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MatrixType b = MatrixType::Random(rows, cols);
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BenchTimer timerB, timerH, timerV;
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Scalar acc = 0;
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int r = internal::random<int>(0, rows - 1);
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int c = internal::random<int>(0, cols - 1);
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for (int t = 0; t < TRIES; ++t) {
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timerB.start();
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for (int k = 0; k < repeats; ++k) {
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asm("#begin foo");
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b = a.reverse();
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asm("#end foo");
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acc += b.coeff(r, c);
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}
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timerB.stop();
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}
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if (MatrixType::RowsAtCompileTime == Dynamic)
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std::cout << "dyn ";
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else
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std::cout << "fixed ";
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std::cout << rows << " x " << cols << " \t" << (timerB.value() * REPEAT) / repeats << "s "
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<< "(" << 1e-6 * size * repeats / timerB.value() << " MFLOPS)\t";
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std::cout << "\n";
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// make sure the compiler does not optimize too much
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if (acc == 123) std::cout << acc;
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}
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int main(int argc, char* argv[]) {
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const int dynsizes[] = {4, 6, 8, 16, 24, 32, 49, 64, 128, 256, 512, 900, 0};
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std::cout << "size no sqrt standard";
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// #ifdef BENCH_GSL
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// std::cout << " GSL (standard + double + ATLAS) ";
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// #endif
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std::cout << "\n";
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for (uint i = 0; dynsizes[i] > 0; ++i) {
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bench_reverse(Matrix<Scalar, Dynamic, Dynamic>(dynsizes[i], dynsizes[i]));
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bench_reverse(Matrix<Scalar, Dynamic, 1>(dynsizes[i] * dynsizes[i]));
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}
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// bench_reverse(Matrix<Scalar,2,2>());
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// bench_reverse(Matrix<Scalar,3,3>());
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// bench_reverse(Matrix<Scalar,4,4>());
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// bench_reverse(Matrix<Scalar,5,5>());
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// bench_reverse(Matrix<Scalar,6,6>());
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// bench_reverse(Matrix<Scalar,7,7>());
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// bench_reverse(Matrix<Scalar,8,8>());
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// bench_reverse(Matrix<Scalar,12,12>());
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// bench_reverse(Matrix<Scalar,16,16>());
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return 0;
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}
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