int main(int argc, char *argv[])
{
// platform, devices, contexts, command queues
OCLBase oclBase;
oclBase.print();
// check that devices were found
const vector<size_t> cpuidx = oclBase.cpuIndexes();
const vector<size_t> gpuidx = oclBase.gpuIndexes();
const vector<size_t> accidx = oclBase.accIndexes();
if (cpuidx.empty() && gpuidx.empty() && accidx.empty())
{
cerr << "no CPU, GPU or ACCELERATOR devices found" << endl;
return -1;
}
// order preference for devices, just take first device found
// 1. ACCELERATOR
// 2. GPU
// 3. CPU
const bool isACCELERATOR = !accidx.empty();
const bool isGPU = !gpuidx.empty();
const bool isCPU = !cpuidx.empty();
size_t devidx;
const char *devtype;
if (isACCELERATOR) {
devidx = accidx[0];
devtype = "ACCELERATOR";
} else if (isGPU) {
devidx = gpuidx[0];
devtype = "GPU";
} else if (isCPU) {
devidx = cpuidx[0];
devtype = "CPU";
}
cout << "Using " << devtype << " device " << devidx << endl;
// program, kernels and memory buffers for selected device
OCLApp oclApp(oclBase, devidx);
oclApp.print();
return 0;
}
int getDeviceIndex(OCLBase& oclBase,
const string& device) {
if ("cpu" == device || "cpu0" == device)
return oclBase.cpuIndexes().empty() ? -1 : oclBase.cpuIndexes()[0];
else if ("gpu" == device || "gpu0" == device)
return oclBase.gpuIndexes().empty() ? -1 : oclBase.gpuIndexes()[0];
else if ("acc" == device || "acc0" == device)
return oclBase.accIndexes().empty() ? -1 : oclBase.accIndexes()[0];
else {
if (0 == device.find("cpu")) {
stringstream ss;
ss << device.substr(3);
size_t index = 0;
ss >> index;
return oclBase.cpuIndexes().empty() ? -1 : oclBase.cpuIndexes()[index];
} else if (0 == device.find("gpu")) {