FMM-Strassen-Algorithm/test.cpp at master · JunmingZhao42/FMM-Strassen-Algorithm · GitHub

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/**
 * MATH3512 Matrix Computations, The Australian National University
 * Supervisor : Professor Linda Stals
 * Student    : u6633756 Junming Zhao
 * test.cpp   : examples and tests of BLAS operation (a) and (d) implemented.
**/


#include "blas_routine.cpp"
// #include "matrix.cpp"
#include <iostream>
#include <chrono>
#include <math.h>


const int REPEAT = 5;
const int SIZE = 1000;
const int STEP = 10;


int main(){
    // test for Strassen algorithm
    // test 4.1 in report
    /*
    std::cout << "matrix dimension," << "Strassen," << "Standard" << std::endl;

    for (int m=0; m<SIZE; m+=STEP){
        for (int i=0; i<REPEAT; i++){
            std::cout << m << ",";
            // create matrix A
            Matrix A = Matrix(m);
            A.assign_random();

            // create matrix B
            Matrix B = Matrix(m);
            B.assign_random();

            std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now();
            // C = A*B
            Matrix C = Matrix::strassen(A,B);
            std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << ",";

            // standard matrix multiplication
            begin = std::chrono::steady_clock::now();
            C = A*B;
            end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << std::endl;
        }
    }
    */


    // test for BLAS3-A routine
    // test 4.2 in report
    /*
    std::cout << "matrix dimension," << "Strassen," << "Standard" << std::endl;

    for (int m=0; m < SIZE; m+=STEP){
        for (int i=0; i<REPEAT; i++){
            std::cout << m << ",";
            // create matrix A
            Matrix A = Matrix(m);
            A.assign_random();

            // create matrix B
            Matrix B = Matrix(m);
            B.assign_random();

            // create matrix C
            Matrix C(m);

            std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now();
            // C = 2.0*A*B + 2.0*C
            BLAS_3A(2.0, 2.0, A, B, C);
            std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << ",";

            // standard matrix multiplication
            begin = std::chrono::steady_clock::now();
            C.assign_zeros();
            // C = 2.0*A*B + 2.0*C
            C *= 2.0;
            C += A*B;
            end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << std::endl;
        }
    }
    */


    // test for BLAS3-D routine
    // test 4.3 in report

    std::cout << "matrix dimension," << "Strassen," << "Standard" << std::endl;

    for (int n=1; n < 16; n+=1){
        for (int i=0; i<REPEAT; i++){
            int m = pow(2, n);

            std::cout << m << ",";
            // create matrix T
            Matrix T = Matrix(m);
            T.assign_triangular();

            // create matrix B
            Matrix B = Matrix(m);
            B.assign_random();

            std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now();
            // C = 2.0*T^-1*B
            BLAS_3D(2.0, T, B, true);
            std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << ",";

            // standard matrix multiplication
            begin = std::chrono::steady_clock::now();
            // C = 2.0*T^-1*B
            BLAS_3D(2.0, T, B, false);
            end = std::chrono::steady_clock::now();

            std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count() << std::endl;
        }
    }


    return 0;
}