mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-15 07:10:37 +08:00
98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
#include <iostream>
|
|
#include <fstream>
|
|
#include <vector>
|
|
#include <Eigen/Core>
|
|
#include "../../BenchTimer.h"
|
|
using namespace Eigen;
|
|
|
|
#ifndef SCALAR
|
|
#error SCALAR must be defined
|
|
#endif
|
|
|
|
typedef SCALAR Scalar;
|
|
|
|
template<typename MatA, typename MatB, typename MatC>
|
|
inline void lazy_gemm(const MatA &A, const MatB &B, MatC &C)
|
|
{
|
|
escape((void*)A.data());
|
|
escape((void*)B.data());
|
|
C.noalias() += A.lazyProduct(B);
|
|
escape((void*)C.data());
|
|
}
|
|
|
|
template<int m, int n, int k, int TA>
|
|
EIGEN_DONT_INLINE
|
|
double bench()
|
|
{
|
|
typedef Matrix<Scalar,m,k,TA> MatA;
|
|
typedef Matrix<Scalar,k,n> MatB;
|
|
typedef Matrix<Scalar,m,n> MatC;
|
|
|
|
MatA A(m,k);
|
|
MatB B(k,n);
|
|
MatC C(m,n);
|
|
A.setRandom();
|
|
B.setRandom();
|
|
C.setZero();
|
|
|
|
BenchTimer t;
|
|
|
|
double up = 1e7*4/sizeof(Scalar);
|
|
double tm0 = 10, tm1 = 20;
|
|
|
|
double flops = 2. * m * n * k;
|
|
long rep = std::max(10., std::min(10000., up/flops) );
|
|
long tries = std::max(tm0, std::min(tm1, up/flops) );
|
|
|
|
BENCH(t, tries, rep, lazy_gemm(A,B,C));
|
|
|
|
return 1e-9 * rep * flops / t.best();
|
|
}
|
|
|
|
template<int m, int n, int k>
|
|
double bench_t(int t)
|
|
{
|
|
if(t)
|
|
return bench<m,n,k,RowMajor>();
|
|
else
|
|
return bench<m,n,k,0>();
|
|
}
|
|
|
|
EIGEN_DONT_INLINE
|
|
double bench_mnk(int m, int n, int k, int t)
|
|
{
|
|
int id = m*10000 + n*100 + k;
|
|
switch(id) {
|
|
case 10101 : return bench_t< 1, 1, 1>(t); break;
|
|
case 20202 : return bench_t< 2, 2, 2>(t); break;
|
|
case 30303 : return bench_t< 3, 3, 3>(t); break;
|
|
case 40404 : return bench_t< 4, 4, 4>(t); break;
|
|
case 50505 : return bench_t< 5, 5, 5>(t); break;
|
|
case 60606 : return bench_t< 6, 6, 6>(t); break;
|
|
case 70707 : return bench_t< 7, 7, 7>(t); break;
|
|
case 80808 : return bench_t< 8, 8, 8>(t); break;
|
|
case 90909 : return bench_t< 9, 9, 9>(t); break;
|
|
case 101010 : return bench_t<10,10,10>(t); break;
|
|
case 111111 : return bench_t<11,11,11>(t); break;
|
|
case 121212 : return bench_t<12,12,12>(t); break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
std::vector<double> results;
|
|
|
|
std::ifstream settings("lazy_gemm_settings.txt");
|
|
long m, n, k, t;
|
|
while(settings >> m >> n >> k >> t)
|
|
{
|
|
//std::cerr << " Testing " << m << " " << n << " " << k << std::endl;
|
|
results.push_back( bench_mnk(m, n, k, t) );
|
|
}
|
|
|
|
std::cout << RowVectorXd::Map(results.data(), results.size());
|
|
|
|
return 0;
|
|
}
|