ArrayFire convolve2 benchmark

convolve_bench.cpp

/*******************************************************
 * Copyright (c) 2014, ArrayFire
 * All rights reserved.
 *
 * This file is distributed under 3-clause BSD license.
 * The complete license agreement can be obtained at:
 * http://arrayfire.com/licenses/BSD-3-Clause
 ********************************************************/

#include <arrayfire.h>
#include <cstdio>
#include <cstdlib>

using namespace af;

int main(int argc, char *argv[])
{
    try {

        // Select a device and display arrayfire info
        int device = argc > 1 ? atoi(argv[1]) : 0;
        af::setDevice(device);
        af::info();

        const int iters = 10;

        af::array image = af::randu(15000, 400);
        af::array ker = af::randu(64, 32);
        af::sync();

        timer::start();
        for (int i = 0; i < iters; i++) {
            af::array out = convolve2(image, ker);
        }
        af::sync();
        printf("Time taken: %lfs\n", timer::stop() / iters);

    } catch (af::exception& e) {
        fprintf(stderr, "%s\n", e.what());
        throw;
    }

    #ifdef WIN32 // pause in Windows
    if (!(argc == 2 && argv[1][0] == '-')) {
        printf("hit [enter]...");
        fflush(stdout);
        getchar();
    }
    #endif
    return 0;
}