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#include "utests/utest_helper.hpp"
#include <sys/time.h>
double benchmark_read_buffer(void)
{
struct timeval start,stop;
const size_t n = 1024 * 1024;
int count = 16;
const size_t sz = 4 * n * count;
OCL_CREATE_BUFFER(buf[0], 0, sz * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[1], 0, sz * sizeof(float), NULL);
OCL_CREATE_BUFFER(buf[2], 0, sz * sizeof(float), NULL);
OCL_CREATE_KERNEL("compiler_read_buffer");
OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
OCL_MAP_BUFFER(0);
OCL_MAP_BUFFER(1);
for (size_t i = 0; i < sz; i ++) {
((float *)(buf_data[0]))[i] = rand();
((float *)(buf_data[1]))[i] = rand();
}
OCL_UNMAP_BUFFER(0);
OCL_UNMAP_BUFFER(1);
// Setup kernel and buffers
globals[0] = n;
locals[0] = 256;
gettimeofday(&start,0);
for (size_t i=0; i<100; i++) {
OCL_NDRANGE(1);
}
OCL_FINISH();
gettimeofday(&stop,0);
clReleaseMemObject(buf[0]);
free(buf_data[0]);
buf_data[0] = NULL;
double elapsed = time_subtract(&stop, &start, 0);
return BANDWIDTH(sz * sizeof(float) * 2 * 100, elapsed);
}
MAKE_BENCHMARK_FROM_FUNCTION(benchmark_read_buffer, "GB/S");
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