Software Technology

Programming Models and Runtimes

OMPI-X: Open MPI for Exascale

Principal Investigators: David Bernholdt, lead, Oak Ridge National Laboratory; Howard Pritchard, Los Alamos National Laboratory; Ignacio Laguna, Lawrence Livermore National Laboratory; Ron Brightwell, Sandia National Laboratories; George Bosilca, the University of Tennessee, Knoxville

This project is preparing the MPI standard and its implementation in Open MPI for exascale through improvements in scalability, capability, and resilience. It will address a broad spectrum of issues in both the standard and the implementation:

• Runtime interoperability for MPI+X and beyond,

• Extending the MPI standard to better support coming exascale architectures,

• Improvements to Open MPI scalability and performance,

• Support for more dynamic execution environments,

• Resilience in MPI and Open MPI,

• MPI tools interfaces, and

• Quality assurance.