Performance Predictions for a Numerical Relativity Package in Grid Environments

Authors:
Matei Ripeanu;Adriana Iamnitchi;Ian Foster
Affiliations:
University of Chicago;University of Chicago;University of Chicago, Argonne National Laboratory
Venue:
International Journal of High Performance Computing Applications
Year:
2001

Citing 8
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Abstract

The Cactus software package is representative for a class of scientific applications that are tightly coupled, have regular space decompositions, and involve huge memory and processor time requirements. Cactus has proved to be a valuable tool for astrophysicists, who first initiated its development. However, today's fastest supercomputers are not powerful enough to perform realistic large-scale astrophysics simulations with Cactus. Instead, astrophysicists must turn to innovative resource environments--in particular, computational grids--to satisfy this need for computational power. This paper addresses issues related to the execution of applications such as Cactus in grid environments. The authors focus on two types of grids: a set of geographically distributed supercomputers and a collection of one million Internet-connected workstations. The authors study the application performance on traditional systems, validate the theoretical results against experimental data, and predict performance in the two new environments.