public static HostBuffer1D <T> Alloc(int length)
{
HostBuffer1D <T> result = new HostBuffer1D <T>();
uint elemSize = (uint)Marshal.SizeOf(typeof(T));
CudaUtil.Call(CudaMem.cuMemAllocHost(out result.ptr, elemSize * (uint)length));
result.length = length;
return(result);
}
/// <summary>
/// Copies data from device memory to host memory asynchronously.
/// </summary>
/// <param name="src">The source pointer</param>
/// <param name="dest">The destination buffer</param>
/// <param name="stream">The stream in which to queue the copy operation</param>
public static void CopyAsync <T>(DeviceBuffer src, HostBuffer1D <T> dest, Stream stream) where T : struct
{
if (src.ptr == DevicePtr.Zero || dest.IsNull())
{
throw new NullPointerException();
}
if (src.sizeInBytes != (uint)dest.SizeInBytes)
{
throw new ArgumentException("The source and destination sizes do not match.");
}
CudaUtil.Call(cuMemcpyDtoHAsync(dest.ptr, src.ptr.ptr, (uint)dest.SizeInBytes, stream.Handle));
}
/// <summary>
/// Copies data from host memory to device memory.
/// </summary>
/// <param name="src">The source buffer</param>
/// <param name="dest">The destination pointer</param>
public static void Copy <T>(HostBuffer1D <T> src, DeviceBuffer dest) where T : struct
{
if (src.IsNull() || dest.ptr == DevicePtr.Zero)
{
throw new NullPointerException();
}
if (src.SizeInBytes != dest.SizeInBytes)
{
throw new ArgumentException("The source and destination sizes do not match.");
}
CudaUtil.Call(cuMemcpyHtoD(dest.ptr.ptr, src.ptr, (uint)src.SizeInBytes));
}