opencv/modules/ocl/perf/perf_gemm.cpp

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// @Authors
//    Fangfang Bai, fangfang@multicorewareinc.com
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#include "precomp.hpp"
using namespace std;
#ifdef HAVE_CLAMDBLAS
////////////////////////////////////////////////////////////////////////////
// GEMM
PARAM_TEST_CASE(Gemm, int, cv::Size, int)
{
    int      type;
    cv::Size mat_size;
    int		 flags;
    vector<cv::ocl::Info> info;
    virtual void SetUp()
    {
        type     = GET_PARAM(0);
        mat_size = GET_PARAM(1);
        flags    = GET_PARAM(2);

        cv::ocl::getDevice(info);
    }
};

TEST_P(Gemm, Performance)
{
    cv::Mat a = randomMat(mat_size, type, 0.0, 10.0);
    cv::Mat b = randomMat(mat_size, type, 0.0, 10.0);
    cv::Mat c = randomMat(mat_size, type, 0.0, 10.0);
    cv::ocl::oclMat ocl_dst;

    double totalgputick = 0;
    double totalgputick_kernel = 0;
    double t1 = 0;
    double t2 = 0;

    for(int j = 0; j < LOOP_TIMES + 1; j ++)
    {

        t1 = (double)cvGetTickCount();//gpu start1

        cv::ocl::oclMat ga = cv::ocl::oclMat(a);//upload
        cv::ocl::oclMat gb = cv::ocl::oclMat(b);//upload
        cv::ocl::oclMat gc = cv::ocl::oclMat(c);//upload

        t2 = (double)cvGetTickCount(); //kernel
        cv::ocl::gemm(ga, gb, 1.0, gc, 1.0, ocl_dst, flags);
        t2 = (double)cvGetTickCount() - t2;//kernel

        cv::Mat cpu_dst;
        ocl_dst.download (cpu_dst);//download

        t1 = (double)cvGetTickCount() - t1;//gpu end

        if(j == 0)
            continue;

        totalgputick = t1 + totalgputick;
        totalgputick_kernel = t2 + totalgputick_kernel;

    }
    cout << "average gpu runtime is  " << totalgputick / ((double)cvGetTickFrequency()* LOOP_TIMES * 1000.) << "ms" << endl;
    cout << "average gpu runtime without data transfer is  " << totalgputick_kernel / ((double)cvGetTickFrequency()* LOOP_TIMES * 1000.) << "ms" << endl;
}


INSTANTIATE_TEST_CASE_P(ocl_gemm, Gemm, testing::Combine(
                            testing::Values(CV_32FC1, CV_32FC2/* , CV_64FC1, CV_64FC2*/),
                            testing::Values(cv::Size(512, 512), cv::Size(1024, 1024)),
                            testing::Values(0, cv::GEMM_1_T, cv::GEMM_2_T, cv::GEMM_1_T + cv::GEMM_2_T)));
#endif