JCurand
Java bindings for CURAND
JCurand is a library that makes it it possible to use CURAND, the
NVIDIA CUDA random number generator (RNG), in Java applications.
You may obtain the latest version of JCurand
in the
Downloads section.
JCurand provides easy access to CURAND, and thus allows users to efficiently
create high-quality pseudorandom and quasirandom numbers from Java programs -
for the cases where
java.util.Random is just not random enough...
The following code snippet shows how to set up a random number generator and
create as set of pseudorandom numbers on the device, which are then copied
to Java:
// Allocate device memory
Pointer deviceData = new Pointer();
cudaMalloc(deviceData, n * Sizeof.FLOAT);
// Create and initialize a pseudo-random number generator
curandGenerator generator = new curandGenerator();
curandCreateGenerator(generator, CURAND_RNG_PSEUDO_DEFAULT);
curandSetPseudoRandomGeneratorSeed(generator, 1234);
// Generate random numbers
curandGenerateUniform(generator, deviceData, n);
// Copy the random numbers from the device to the host
float hostData[] = new float[n];
cudaMemcpy(Pointer.to(hostData), deviceData,
n * Sizeof.FLOAT, cudaMemcpyDeviceToHost);<
/code>
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