public void cudaHostRegister_cudaHostUnRegister_test()
{
var length = 1024 * 1024;
var size = 1024 * 1024 * sizeof(float);
IntPtr ptr = Marshal.AllocHGlobal(size);
Assert.IsFalse(VirtualLock(ptr, (ulong)size));
var status = CudaRuntimeApi.cudaHostRegister(ptr, (ulong)size, DriverTypes.cudaHostRegisterDefault);
Assert.AreEqual(status, cudaError.cudaSuccess);
Console.WriteLine($"ptr : {ptr}");
float[] test = new float[length];
float[] result = new float[length];
for (int i = 0; i < length; i++)
{
test[i] = Convert.ToSingle(i);
}
Marshal.Copy(test, 0, ptr, length);
Marshal.Copy(ptr, result, 0, length);
for (int i = 0; i < length; i++)
{
Assert.AreEqual(result[i], test[i]);
}
status = CudaRuntimeApi.cudaHostUnregister(ptr);
Assert.AreEqual(status, cudaError.cudaSuccess);
Marshal.FreeHGlobal(ptr);
}