Compyle: a Python package for parallel computing

Aditya Bhosale, Prabhu Ramachandran
Department of Aerospace Engineering, IIT Bombay, Mumbai, India
19th Python in Science Conference (SCIPY’20), 2020


   title={Compyle: a Python package for parallel computing},

   author={Bhosale, Aditya and Ramachandran, Prabhu},



Compyle allows users to execute a restricted subset of Python on a variety of HPC platforms. It is an embedded domain-specific language (eDSL) for parallel computing. It currently supports multi-core execution using Cython, and OpenCL and CUDA for GPU devices. Users write code in a restricted subset of Python that is automatically transpiled to high-performance Cython or C. Compyle also provides a few very general purpose and useful parallel algorithms that allow users to write code once and have them run on a variety of HPC platforms. In this article, we show how to implement a simple two-dimensional molecular dynamics (MD) simulation package in pure Python using Compyle. The result is a fully parallel program that is relatively easy to implement and solves a non-trivial problem. The code transparently executes on multi-core CPUs and GPGPUs allowing simulations with millions of particles. A 3D MD code is also provided and compares very favorably with a well known, open source, molecular dynamics package.
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