////////////////////////////////////////////////////////////////////////////////
// main computation function
////////////////////////////////////////////////////////////////////////////////
void computeImages()
{
const char *outputname_cpu = "task1_out_cpu.rbm";
const char *outputname_gpu = "task1_out_gpu.rbm";
unsigned int seed;
int i, length = dataWidth * dataHeight; // SIZE OF DATA
unsigned short int header[2];
gettimeofday(&t_s_cpu, NULL);
seed = (unsigned int)t_s_cpu.tv_usec;
printf("\nseed: %u\n",seed);
if (init_OpenCL()<0)
{
close_OpenCL();
return;
}
data_cpu = generateRandomField(seed,length);
data_gpu = (unsigned int *)malloc (length*sizeof(unsigned int));
if ((!data_cpu)||(!data_gpu))
{
printf("\nError allocating data.\n\n");
return;
}
for(i=0;i<length;i++)
data_gpu[i]=data_cpu[i];
gettimeofday(&t_s_cpu, NULL);
cpu_Sort(data_cpu,length);
gettimeofday(&t_e_cpu, NULL);
gettimeofday(&t_s_gpu, NULL);
gpu_Sort(data_gpu,length);
gettimeofday(&t_e_gpu, NULL);
// For small data sets you may print out errors here.
// for(i=0;i<length;i++)
// if(data_gpu[i]!=data_cpu[i]) printf("error @ %u\n",i);
printf("\n time needed: \nCPU: %i us\n",(int)(t_e_cpu.tv_usec-t_s_cpu.tv_usec + (t_e_cpu.tv_sec-t_s_cpu.tv_sec)*1000000));
printf("\nGPU: %i us\n\n",(int)(t_e_gpu.tv_usec-t_s_gpu.tv_usec + (t_e_gpu.tv_sec-t_s_gpu.tv_sec)*1000000));
header[0]=dataWidth;
header[1]=dataHeight;
close_OpenCL();
return;
}
// Main program, inits
int main( int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode( GLUT_SINGLE | GLUT_RGBA );
glutInitWindowSize( 1024, 512 );
glutCreateWindow("CUDA on live GL");
glutDisplayFunc(Draw);
ResetMilli();
if (init_OpenCL()<0)
{
printf("OpenCL could not be initialized!\n");
close_OpenCL();
return;
}
readAndBuildKernel("filter.cl");
computeImages();
close_OpenCL();
glutMainLoop();
}
