public void InitializeData(int count)
{
this.count = count;
IntPtr hostPointer = IntPtr.Zero;
var res = DriverAPINativeMethods.MemoryManagement.cuMemAllocHost_v2(ref hostPointer, count * sizeof(ResultPoint));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
hostBuffer = (ResultPoint *)hostPointer;
deviceBuffer = new CudaDeviceVariable <ResultPoint>(count);
for (int i = 0; i < count; i++)
{
hostBuffer[i].X = (uint)i;
hostBuffer[i].Y = (uint)i;
}
defaultStream = new CudaStream();
res = DriverAPINativeMethods.AsynchronousMemcpy_v2.cuMemcpyHtoDAsync_v2(
deviceBuffer.DevicePointer,
hostPointer,
deviceBuffer.SizeInBytes,
defaultStream.Stream);
if (res != CUResult.Success)
{
throw new CudaException(res);
}
IntPtr secondHostPointer = IntPtr.Zero;
res = DriverAPINativeMethods.MemoryManagement.cuMemAllocHost_v2(ref secondHostPointer, count * sizeof(ResultPoint));
if (res != CUResult.Success)
{
throw new CudaException(res);
}
secondHostBuffer = (ResultPoint *)secondHostPointer;
secondDeviceBuffer = new CudaDeviceVariable <ResultPoint>(count);
for (int i = 0; i < count; i++)
{
secondHostBuffer[i].X = (uint)i;
secondHostBuffer[i].Y = (uint)i;
}
defaultStream = new CudaStream();
res = DriverAPINativeMethods.AsynchronousMemcpy_v2.cuMemcpyHtoDAsync_v2(
secondDeviceBuffer.DevicePointer,
secondHostPointer,
secondDeviceBuffer.SizeInBytes,
defaultStream.Stream);
if (res != CUResult.Success)
{
throw new CudaException(res);
}
}
private void Dispose(bool disposing)
{
if (disposing)
{
GC.SuppressFinalize(this);
}
if (secondHostBuffer != default(ResultPoint *))
{
var tmp = new IntPtr(secondHostBuffer);
secondHostBuffer = default(ResultPoint *);
try
{
DriverAPINativeMethods.MemoryManagement.cuMemFreeHost(tmp);
}
catch (Exception ex) { Debug.WriteLine(ex.Message); }
}
if (disposing)
{
Dispose(ref deviceBuffer);
Dispose(ref defaultStream);
Dispose(ref ctx);
}
}
