| // g++ -fopenmp -I .. -O3 -DNDEBUG -finline-limit=1000 benchmarkX.cpp -o b && time ./b |
| |
| #include <iostream> |
| |
| #include <Eigen/Core> |
| |
| using namespace std; |
| using namespace Eigen; |
| |
| #ifndef MATTYPE |
| #define MATTYPE MatrixXLd |
| #endif |
| |
| #ifndef MATSIZE |
| #define MATSIZE 400 |
| #endif |
| |
| #ifndef REPEAT |
| #define REPEAT 100 |
| #endif |
| |
| int main(int argc, char *argv[]) |
| { |
| MATTYPE I = MATTYPE::Ones(MATSIZE,MATSIZE); |
| MATTYPE m(MATSIZE,MATSIZE); |
| for(int i = 0; i < MATSIZE; i++) for(int j = 0; j < MATSIZE; j++) |
| { |
| m(i,j) = (i+j+1)/(MATSIZE*MATSIZE); |
| } |
| for(int a = 0; a < REPEAT; a++) |
| { |
| m = I + 0.0001 * (m + m*m); |
| } |
| cout << m(0,0) << endl; |
| return 0; |
| } |