cuFFTDx

cuFFTDx Library - API Examples

All example, including more advanced onces, are shipped within cuFFTDx package.

Description

This folder demonstrates cuFFTDx APIs usage.

• cuFFTDx download page
• cuFFTDx API documentation

Requirements

• cuFFTDx/MathDx package
• See cuFFTDx requirements
• CMake 3.18 or newer
• Linux system with installed NVIDIA drivers
• NVIDIA GPU of Volta (SM70) or newer architecture

Build

• You may specify CUFFTDX_CUDA_ARCHITECTURES to limit CUDA architectures used for compilation (see CMake:CUDA_ARCHITECTURES)
• mathdx_ROOT - path to mathDx package (XX.Y - version of the package)

mkdir build && cd build
cmake -DCUFFTDX_CUDA_ARCHITECTURES=70-real -Dmathdx_ROOT=/opt/nvidia/mathdx/XX.Y ..
make
// Run
ctest

Examples

For the detailed descriptions of the examples please visit Examples section of the cuFFTDx documentation.

Group	Subgroup	Example	Description
Introduction Examples		introduction_example	cuFFTDx API introduction
Simple FFT Examples	Thread FFT Examples	simple_fft_thread	Complex-to-complex thread FFT
		simple_fft_thread_fp16	Complex-to-complex thread FFT half-precision
	Block FFT Examples	simple_fft_block	Complex-to-complex block FFT
		simple_fft_block_r2c	Real-to-complex block FFT
		simple_fft_block_c2r	Complex-to-real block FFT
		simple_fft_block_half2	Complex-to-complex block FFT with __half2 as data type
		simple_fft_block_fp16	Complex-to-complex block FFT half-precision
		simple_fft_block_r2c_fp16	Real-to-complex block FFT half-precision
		simple_fft_block_c2r_fp16	Complex-to-real block FFT half-precision
	Extra Block FFT Examples	simple_fft_block_shared	Complex-to-complex block FFT shared-memory API
		simple_fft_block_std_complex	Complex-to-complex block FFT with cuda::std::complex as data type
		simple_fft_block_cub_io	Complex-to-complex block FFT with CUB used for loading/storing data
NVRTC Examples		nvrtc_fft_thread	Complex-to-complex thread FFT
		nvrtc_fft_block	Complex-to-complex block FFT
FFT Performance		block_fft_performance	Benchmark for C2C block FFT
		block_fft_performance_many	Benchmark for C2C/R2C/C2R block FFT
Convolution Examples		convolution	Simplified FFT convolution
		convolution_r2c_c2r	Simplified R2C-C2R FFT convolution
		convolution_performance	Benchmark for FFT convolution using cuFFTDx and cuFFT
2D/3D FFT Advanced Examples		fft_2d	Example showing how to perform 2D FP32 C2C FFT with cuFFTDx
		fft_2d_r2c_c2r	Example showing how to perform 2D FP32 R2C/C2R convolution with cuFFTDx
		fft_2d_single_kernel	2D FP32 FFT in a single kernel using Cooperative Groups kernel launch
		fft_3d_box_single_block	Small 3D FP32 FFT that fits into a single block, each dimension is different
		fft_3d_cube_single_block	Small 3D (equal dimensions) FP32 FFT that fits into a single block