Welcome to the homepage for the OpenPA project. The goal of this project is to provide an open source, highly-portable library that provides atomic primitives (and related constructs) for high performance, concurrent software. This project is a collaboration between the  Mathematics and Computer Science (MCS) division at  Argonne National Laboratory (ANL) and the  HDF Group. The code was originally derived from work on the  MPICH2 project.

Here are some useful project links:

The git repository can also be browsed from the "Browse Source" menu above.