Bigger and Better Simulations

Interoperable technologies for advanced petascale simulations to improve accuracy and efficiency

Lori Diachin (project webpage)
Lawrence Livermore National Laboratory

SciDAC applications have a demonstrated need for advanced software tools to manage the complexities associated with sophisticated geometry, mesh, and field manipulation tasks, particularly as computer architectures move toward the petascale. The Center for Interoperable Technologies for Advanced Petascale Simulations (ITAPS) will deliver interoperable and interchangeable mesh, geometry, and field manipulation services that are of direct use to SciDAC applications with minimal intrusion into application codes.

The initial round of SciDAC investments developed and deployed a number of advanced technologies including front tracking, mesh quality improvement via smoothing and swapping, and adaptive mesh refinement, that were widely used by application scientists. This project will continue to develop the most promising of those technologies and invest in critical new areas identified by SciDAC application teams. Specifically, ITAPS will develop new geometry, mesh, and field services that support partial differential equation-constrained design optimization on deforming geometries, mesh alignment, adaptive mesh refinement, front tracking, verification, solution transfer operations, dynamic partitioning, and other parallel tools for petascale simulations. Underlying these services are the common interfaces that provide data-structure-neutral access to mesh, geometry, and field information. These interfaces are the key to providing uniform access to all ITAPS tools and to creating interoperability among ITAPS technologies. Using these technologies, ITAPS will work with application scientists to develop the next generation of petascale simulation codes.

The Department of Energy has considerable investments in petascale computing to enable the advanced modeling and numerical simulation of systems relevant to mission needs. So that numerical simulations can be constructed more efficiently using the latest technologies, the Center for Interoperable Technologies for Advanced Petascale Simulations (ITAPS) will develop interoperable and interchangeable mesh, geometry, and field manipulation tools that are of direct use to science applications including accelerator modeling and design, fusion energy science, groundwater reactive transport modeling and simulation, and nuclear energy.

Center for Enabling Technology: Applied Mathematics

Project Title: Center for Interoperable Technologies for Advanced Petascale Simulations (ITAPS)

Principal Investigator: Lori Diachin
Affiliation: Lawrence Livermore National Laboratory

Project Webpage:

Project Email:

Participating Institutions and Co-Investigators:
Brookhaven National Laboratory - James Glimm and Roman Samulyak
Lawrence Livermore National Laboratory - Lori Diachin (PI), Bill Henshaw, Mark Miller, and Craig Kapfer
Oak Ridge National Laboratory - Ed D'Azevedo and Ahmed Khamayseh
Pacific Northwest National Laboratory - Harold Trease
Renssealer Polytechnic Institute - Mark Shephard and Ken Jansen
Sandia National Laboratories - Patrick Knupp, Timothy Tautges and Karen Devine
State University of New York at Stony Brook - Xiaolin Li
University of British Columbia - Carl Ollivier-Gooch

Funding Partners: Office of Science - Office of Advanced Scientific Computing Research

Budget and Duration: Approximately $2.5 million per year for five years 1

Other SciDAC Enabling Technologies Centers
Other SciDAC Applied Mathematics efforts

1Subject to acceptable progress review and the availability of appropriated funds


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