void runBenchmark(int iterations, char *exec_path)
{
printf("Run %u particles simulation for %d iterations...\n\n", numParticles, iterations);
cudaDeviceSynchronize();
sdkStartTimer(&timer);
for (int i = 0; i < iterations; ++i)
{
psystem->update(timestep);
}
cudaDeviceSynchronize();
sdkStopTimer(&timer);
float fAvgSeconds = ((float)1.0e-3 * (float)sdkGetTimerValue(&timer)/(float)iterations);
printf("particles, Throughput = %.4f KParticles/s, Time = %.5f s, Size = %u particles, NumDevsUsed = %u, Workgroup = %u\n",
(1.0e-3 * numParticles)/fAvgSeconds, fAvgSeconds, numParticles, 1, 0);
if (g_refFile)
{
printf("\nChecking result...\n\n");
float *hPos = (float *)malloc(sizeof(float)*4*psystem->getNumParticles());
copyArrayFromDevice(hPos, psystem->getCudaPosVBO(),
0, sizeof(float)*4*psystem->getNumParticles());
sdkDumpBin((void *)hPos, sizeof(float)*4*psystem->getNumParticles(), "particles.bin");
if (!sdkCompareBin2BinFloat("particles.bin", g_refFile, sizeof(float)*4*psystem->getNumParticles(),
MAX_EPSILON_ERROR, THRESHOLD, exec_path))
{
g_TotalErrors++;
}
}
}
void runAutoTest(const char *ref_file, char *exec_path)
{
checkCudaErrors(cudaMalloc((void **)&d_output, width*height*sizeof(GLubyte)*4));
// render the volumeData
render_kernel(gridSize, blockSize, d_output, width, height, w);
checkCudaErrors(cudaDeviceSynchronize());
getLastCudaError("render_kernel failed");
void *h_output = malloc(width*height*sizeof(GLubyte)*4);
checkCudaErrors(cudaMemcpy(h_output, d_output, width*height*sizeof(GLubyte)*4, cudaMemcpyDeviceToHost));
sdkDumpBin(h_output, width*height*sizeof(GLubyte)*4, "simpleTexture3D.bin");
bool bTestResult = sdkCompareBin2BinFloat("simpleTexture3D.bin", sdkFindFilePath(ref_file, exec_path), width*height,
MAX_EPSILON_ERROR, THRESHOLD, exec_path);
checkCudaErrors(cudaFree(d_output));
free(h_output);
// cudaDeviceReset causes the driver to clean up all state. While
// not mandatory in normal operation, it is good practice. It is also
// needed to ensure correct operation when the application is being
// profiled. Calling cudaDeviceReset causes all profile data to be
// flushed before the application exits
cudaDeviceReset();
sdkStopTimer(&timer);
sdkDeleteTimer(&timer);
exit(bTestResult ? EXIT_SUCCESS : EXIT_FAILURE);
}
