private synchronized void shutdown() {
if (!exe.isShutdown()) {
freeCUObjectsMemory();
}
exe.shutdown();
try {
System.err.println(
"cuda device " + Id + " freed ? " + exe.awaitTermination(10, TimeUnit.SECONDS));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public static boolean init() {
synchronized (cudaEngines) {
System.err.println("---------Initializing Cuda----------------");
try {
extractAndLoadNativeLibs();
JCudaDriver.setExceptionsEnabled(true);
JCudaDriver.cuInit(0);
compileKernelsPtx();
// Obtain the number of devices
int deviceCountArray[] = {0};
JCudaDriver.cuDeviceGetCount(deviceCountArray);
availableDevicesNb = deviceCountArray[0];
if (availableDevicesNb == 0) return false;
availableDevicesNb = NB_OF_DEVICE_TO_USE; // TODO
initialization = Executors.newCachedThreadPool();
System.out.println("Found " + availableDevicesNb + " GPU devices");
for (int i = 0 /*-NB_OF_DEVICE_TO_USE*/; i < availableDevicesNb; i++) {
final int index = i;
Future<?> initJob =
initialization.submit(
new Runnable() {
public void run() {
System.err.println("Initializing device n°" + index);
cudaEngines.put(index, new CudaEngine(index));
}
});
initJob.get();
initialization.shutdown();
}
} catch (InterruptedException
| ExecutionException
| IOException
| CudaException
| UnsatisfiedLinkError e) {
e.printStackTrace();
System.err.println("---------Cannot initialize Cuda !!! ----------------");
return false;
}
Runtime.getRuntime()
.addShutdownHook(
new Thread() {
@Override
public void run() {
CudaEngine.stop();
}
});
System.out.println("---------Cuda Initialized----------------");
return true;
}
}