GPGPU_OpenCL

Some common GPGPU algorithms with OpenCL on Nvidia GPU.

This repository comes with a HackMD document include what optimization skills are provided to different implemented algorithms. This is used by me as a reference when working on implementing different algorithms on GPU.

HackMD Document

https://hackmd.io/@Erebustsai/Byul7e-Up

Algorithms

• Histogram
• Matrix Multiplication
• Convolution / Sobel
• Prefix Scan
• N-body
• Parallel Sorting Algorithms
• Reduction
• SpMV

Contains

• For using Windows with Visual Studio 2022, .cl files and main_xxxx.cpp files are provided. The main files should be used as examples.
• main_xxxx.cpp contain the main functions and additional functions for different algorithm implementations.
• For using Linux, Makefile is provided.
• namespace ocl provide variety of helper functions that can help writing OpenCL programs.
• namespace CVHelper provide functions for reading and writing imgs to and from a float format. This can be easily change to different types.

How to Compile

Windows

• I use Windows for this project so using Visual Studio 2022 is recommanded. Please remember to install and include OpenCV and OpenCL in your project setting.
• For OpenCL headers, I use headers provided in https://github.com/ProjectPhysX/OpenCL-Wrapper . Please refer to the Github page for better detail.

Linux

• Each algo is in different dir.
• make