public CUFFTResult cufftSetStream(cufftHandle plan, cudaStream stream)
{
return cufftSetStream_ext(plan, stream);
}
public cufftHandle Plan1D(int nx, CUFFTType type, int batch)
{
this.plan = new cufftHandle();
this.LastError = _driver.cufftPlan1d(ref this.plan, nx, type, batch);
return this.plan;
}
public void Destroy(cufftHandle plan)
{
this.LastError = _driver.cufftDestroy(plan);
}
public static extern CUFFTResult cufftSetStream(cufftHandle p, cudaStream stream);
public void ExecuteComplexToReal(cufftHandle plan, CUdeviceptr input, CUdeviceptr output)
{
this.LastError = _driver.cufftExecC2R(plan, input, output);
}
public static extern CUFFTResult cufftExecZ2Z(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata, CUFFTDirection direction);
public static extern CUFFTResult cufftPlan3d(ref cufftHandle plan, int nx, int ny, int nz, CUFFTType type);
private static extern CUFFTResult cufftPlanMany_ext(ref cufftHandle plan, int rank, IntPtr n, IntPtr inembed, int istride, int idist, IntPtr onembed, int ostride, int odist, CUFFTType type, int batch);
private static extern CUFFTResult cufftSetStream_ext(cufftHandle p, cudaStream stream);
private static extern CUFFTResult cufftPlan1d_ext(ref cufftHandle plan, int nx, CUFFTType type, int batch);
private static extern CUFFTResult cufftPlan3d_ext(ref cufftHandle plan, int nx, int ny, int nz, CUFFTType type);
private static extern CUFFTResult cufftExecZ2Z_ext(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata, CUFFTDirection direction);
private static extern CUFFTResult cufftExecZ2D_ext(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata);
public CUFFTResult cufftSetCompatibilityMode(cufftHandle plan, CUFFTCompatibility mode)
{
return cufftSetCompatibilityMode_ext(plan, mode);
}
public static extern CUFFTResult cufftDestroy(cufftHandle plan);
private static extern CUFFTResult cufftSetCompatibilityMode_ext(cufftHandle plan, CUFFTCompatibility mode);
public static extern CUFFTResult cufftExecZ2D(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata);
public CUFFTResult cufftDestroy(cufftHandle plan)
{
return cufftDestroy_ext(plan);
}
public static extern CUFFTResult cufftPlan1d(ref cufftHandle plan, int nx, CUFFTType type, int batch);
public CUFFTResult cufftExecZ2D(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata)
{
return cufftExecZ2D_ext(plan, idata, odata);
}
public static extern CUFFTResult cufftPlanMany(ref cufftHandle plan, int rank, [In, Out] int[] n, [In, Out] int[] inembed, int istride, int idist, [In, Out] int[] onembed, int ostride, int odist, CUFFTType type, int batch);
public CUFFTResult cufftExecZ2Z(cufftHandle plan, CUdeviceptr idata, CUdeviceptr odata, CUFFTDirection direction)
{
return cufftExecZ2Z_ext(plan, idata, odata, direction);
}
public void ExecuteComplexToComplex(cufftHandle plan, CUdeviceptr input, CUdeviceptr output, CUFFTDirection direction)
{
this.LastError = _driver.cufftExecC2C(plan, input, output, direction);
}
public CUFFTResult cufftPlan1d(ref cufftHandle plan, int nx, CUFFTType type, int batch)
{
return cufftPlan1d_ext(ref plan, nx, type, batch);
}
public void ExecuteRealToComplex(cufftHandle plan, CUdeviceptr input, CUdeviceptr output)
{
this.LastError = _driver.cufftExecR2C(plan, input, output);
}
public CUFFTResult cufftPlan3d(ref cufftHandle plan, int nx, int ny, int nz, CUFFTType type)
{
return cufftPlan3d_ext(ref plan, nx, ny, nz, type);
}
public cufftHandle Plan3D(int nx, int ny, int nz, CUFFTType type)
{
this.plan = new cufftHandle();
this.LastError = _driver.cufftPlan3d(ref this.plan, nx, ny, nz, type);
return this.plan;
}
public CUFFTResult cufftPlanMany(ref cufftHandle plan, int rank, IntPtr n, IntPtr inembed, int istride, int idist, IntPtr onembed, int ostride, int odist, CUFFTType type, int batch)
{
return cufftPlanMany_ext(ref plan, rank, n, inembed, istride, idist, onembed, ostride, odist, type, batch);
}
static void Main(string[] args)
{
// Init and select 1st device.
CUDA cuda = new CUDA(0, true);
// load module
//cuda.LoadModule(Path.Combine(Environment.CurrentDirectory, "simpleCUFFT.ptx"));
CUfunction func = new CUfunction();// cuda.GetModuleFunction("ComplexPointwiseMulAndScale");
// The filter size is assumed to be a number smaller than the signal size
const int SIGNAL_SIZE = 50;
const int FILTER_KERNEL_SIZE = 11;
// Allocate host memory for the signal
Float2[] h_signal = new Float2[SIGNAL_SIZE];
// Initalize the memory for the signal
Random r = new Random();
for (int i = 0; i < SIGNAL_SIZE; ++i)
{
h_signal[i].x = r.Next() / (float)int.MaxValue;
h_signal[i].y = 0;
}
// Allocate host memory for the filter
Float2[] h_filter_kernel = new Float2[FILTER_KERNEL_SIZE];
// Initalize the memory for the filter
for (int i = 0; i < FILTER_KERNEL_SIZE; ++i)
{
h_filter_kernel[i].x = r.Next() / (float)int.MaxValue;
h_filter_kernel[i].y = 0;
}
// Pad signal and filter kernel
Float2[] h_padded_signal;
Float2[] h_padded_filter_kernel;
int new_size = PadData(h_signal, out h_padded_signal, SIGNAL_SIZE,
h_filter_kernel, out h_padded_filter_kernel, FILTER_KERNEL_SIZE);
// Allocate device memory for signal
// Copy host memory to device
CUdeviceptr d_signal = cuda.CopyHostToDevice<Float2>(h_padded_signal);
// Allocate device memory for filter kernel
// Copy host memory to device
CUdeviceptr d_filter_kernel = cuda.CopyHostToDevice<Float2>(h_padded_filter_kernel);
// CUFFT plan
CUFFT fft = new CUFFT(cuda);
cufftHandle handle = new cufftHandle();
CUFFTResult fftres = CUFFTDriver.cufftPlan1d(ref handle, new_size, CUFFTType.C2C, 1);
//fft.Plan1D(new_size, CUFFTType.C2C, 1);
return;
// Transform signal and kernel
fft.ExecuteComplexToComplex(d_signal, d_signal, CUFFTDirection.Forward);
fft.ExecuteComplexToComplex(d_filter_kernel, d_filter_kernel, CUFFTDirection.Forward);
// Multiply the coefficients together and normalize the result
// ComplexPointwiseMulAndScale<<<32, 256>>>(d_signal, d_filter_kernel, new_size, 1.0f / new_size);
cuda.SetFunctionBlockShape(func, 256, 1, 1);
cuda.SetParameter(func, 0, (uint)d_signal.Pointer);
cuda.SetParameter(func, IntPtr.Size, (uint)d_filter_kernel.Pointer);
cuda.SetParameter(func, IntPtr.Size * 2, (uint)new_size);
cuda.SetParameter(func, IntPtr.Size * 2 + 4, 1.0f / new_size);
cuda.SetParameterSize(func, (uint)(IntPtr.Size * 2 + 8));
cuda.Launch(func, 32, 1);
// Transform signal back
fft.ExecuteComplexToComplex(d_signal, d_signal, CUFFTDirection.Inverse);
// Copy device memory to host
Float2[] h_convolved_signal = h_padded_signal;
cuda.CopyDeviceToHost<Float2>(d_signal, h_convolved_signal);
// Allocate host memory for the convolution result
Float2[] h_convolved_signal_ref = new Float2[SIGNAL_SIZE];
// Convolve on the host
Convolve(h_signal, SIGNAL_SIZE,
h_filter_kernel, FILTER_KERNEL_SIZE,
h_convolved_signal_ref);
// check result
bool res = cutCompareL2fe(h_convolved_signal_ref, h_convolved_signal, 2 * SIGNAL_SIZE, 1e-5f);
Console.WriteLine("Test {0}", (true == res) ? "PASSED" : "FAILED");
//Destroy CUFFT context
fft.Destroy();
// cleanup memory
cuda.Free(d_signal);
cuda.Free(d_filter_kernel);
}
private static extern CUFFTResult cufftDestroy_ext(cufftHandle plan);