Skip to content
Switch branches/tags

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


OpenPIV Python version with GPU support

GPU accelerated version of OpenPIV in Python. The algorithm and functions are mostly the same as the CPU version. The main difference is that it runs much faster. The source code has been augmented with CUDA, so it will only run on NVIDIA GPUs.


The OpenPIV GPU version is still in pre-beta state. This means that it still might have some bugs and the API may change. However testing and contributing is very welcome, especially if you can contribute with new algorithms and features.

Validation of the code for instantaneous and time averaged flow has been done, and a paper on that topic has been submitted and will be published in the near future

Development is currently done on a Linux/Mac OSX environment, but as soon as possible Windows will be tested. If you have access to one of these platforms please test the code.

Test without installation

You can test the code without needing to install anything locally. Included in this repository is the IPython Notebook Openpiv_Python_Cython_GPU_demo.ipynb. When viewing the file on Github there will be a link to view the notebook with Colaboratory. Clicking this will load the notebook into Googles free cloud computing service and you can test the GPU capabilities.

Install From Source

Make sure you have installed all the dependancies (numpy, matplotlib, scipy, cython, skcuda, pycuda). The GPU version will only install if it detects both skcuda and pycuda. Otherwise, only the CPU version will be installed.

Clone the repository from Github onto your computer:

git clone

Compile the cython and CUDA code (this can take a while):

python build_ext --inplace

After this the GPU functions should be good to go. You will likely need to add the openpiv directory to the PYTHONPATH to be able to import the functions.

How to cite this work

Dallas CA, Wu M, Chou VP, Liberzon A, Sullivan PE. GPU Accelerated Open Source Particle Image Velocimetry Software for High Performance Computing Systems. ASME. J. Fluids Eng. 2019;():. doi:10.1115/1.4043422.


  1. OpenPIV team,!forum/openpiv-users
  2. Cameron Dallas
  3. Alex Liberzon


GPU accelerated version of OpenPIV in Python




No packages published