CUDA MATLAB Examples

This repository contains MATLAB and CUDA sample code for GPU-accelerated FFT and simulation.

Central Repository Structure

• Matlab_CUDA_1.1/ - MATLAB scripts, CUDA source files, and example workflows for FFT acceleration.
• configMinGW64/ - MinGW configuration helpers for building MATLAB MEX files on Windows.
• configMinGW64/mexopts-win64/ - 64-bit MinGW configuration for Windows MATLAB builds.
• nvmex_fix/ - Setup notes and environment fixes for building with nvmex.
• TESTS.md - Optional repository test or verification notes.

Getting Started

1. Install MATLAB.
2. Install the NVIDIA CUDA Toolkit.
3. Set CUDA environment variables:
   • CUDA_PATH should point to the CUDA installation directory.
   • If needed, set CUDA_LIB_PATH to the CUDA library folder.
4. Use mex or nvmex to build the example MEX files.

Build Example

Build CUDA FFT MEX files

On Windows:

mex fft2_cuda.c -IC:\CUDA\include -LC:\CUDA\lib -lcudart -lcufft
mex fft2_cuda_sp_dp.c -IC:\CUDA\include -LC:\CUDA\lib -lcudart -lcufft
mex ifft2_cuda.c -IC:\CUDA\include -LC:\CUDA\lib -lcudart -lcufft

Build the CUDA simulation example with nvmex

nvmex -f nvmexopts.bat Szeta.cu -IC:\cuda\include -LC:\cuda\lib -lcufft -lcudart

Notes

• Performance depends on the GPU driver, CUDA toolkit version, and MATLAB version.
• Older results showed about 2x speedup on Windows and 4x speedup on Linux with MATLAB + CUDA.
• GPU memory usage is typically lower than CPU-only execution for these workloads.
• This repository was originally tested with older toolchains; modern setups may require updated build flags and paths.

Subdirectory Details

• Matlab_CUDA_1.1/README.txt contains detailed build and runtime instructions for the MATLAB examples.
• nvmex_fix/ReadMe.txt contains environment and path notes for nvmex.
• configMinGW64/ contains Windows-specific build scripts and mexopts configuration.

Keep in Mind

This root README is the central guide. If you need platform-specific setup or build details, follow the subdirectory documentation first.