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About ECP

The ECP is a seven-year $1.7B R&D effort that launched in 2016.

The mission of the Exascale Computing Project (ECP) is the accelerated delivery of a capable exascale computing ecosystem to provide breakthrough solutions addressing our most critical challenges in scientific discovery, energy assurance, economic competitiveness, and national security.

As a multi-lab effort, sponsored by the DOE’s Office of Science and National Nuclear Security Administration, the ECP is chartered with the following tasks:


  • Developing exascale-ready applications and solutions that address currently intractable problems of strategic importance and national interest.


  • Creating and deploying an expanded and vertically integrated software stack on DOE HPC pre-exascale and exascale systems.


  • Delivering US HPC vendor technology advances and deploying ECP products to DOE HPC pre-exascale and exascale systems.


  • Delivering exascale simulation and data science innovations and solutions to national problems that enhance US economic competitiveness, change our quality of life, and strengthen our national security.


The project includes more than 100 top-notch R&D teams, 1,000 researchers and has delivered hundreds of consequential milestones on schedule and within budget since the project began.


The project is organized around three technical focus areas:  Application Development, Software Technology, and Hardware and Integration, supported by a Project Management Office.


The ECP is managed by six core DOE National Laboratories: Argonne, Lawrence Berkeley, Lawrence Livermore, Los Alamos, Oak Ridge, and Sandia


Oak Ridge National Laboratory is proud to serve as the host site for the ECP’s project office.


In addition to serving as the host site for the ECP’s project office, ORNL has multiple levels of participation in the ECP activities.


Vice Chair, Board of Directors, Thomas Zacharia:  Thomas serves as the Vice Chair for ECP’s Board of Directors


PI for ExaAM, John Turner: ExaAM is an ECP application for Transforming Additive Manufacturing Through Exascale Simulation

PI for OMPI-X, David Bernholdt:  OMPI-X (Open MPI for Exascale) is a project to prepare 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:

PI for ExaSMR, Steven Hamilton: The ExaSMR (Small Modular Reactors) project couples high-fidelity neutronics and fluid dynamics in an integrated toolkit for modeling the operational behavior of small modular reactors. It also models the operational behavior of existing light-water reactors at full power with full-core multiphase thermal hydraulics and fuel depletion (over the complete reactor lifetime).

PI for QMCPACK, Paul Kent: The QMCPACK project is centered on finding, predicting, and controlling materials and properties at the quantum level with an unprecedented and systematically improvable accuracy. The project specifically focuses on transition metal oxide systems where the additional capability over existing methods is essential. These efforts could have a major impact on materials science (e.g., helping to uncover the mechanisms behind high-temperature superconductivity).

CAM for Energy Applications, Tom Evans: Energy Applications focus on the modeling and simulation of existing and future technologies for the efficient and responsible production of energy to meet the growing needs of the United States. These applications generally require detailed modeling of complex facilities and multiple coupled physical processes. Their goal is to help overcome obstacles to the efficient and safe delivery of energy. The Energy Applications activity encompasses the research areas of combustion, nuclear energy, fusion energy, wind energy, chemical energy, and particle accelerators.