Systems Research

Evaluation of the influence of network topology and mapping on the performance of parallel applications on clusters

Principal Investigators: D.K. Panda, P. Sadayappan, J. Duato and P. Wyckoff
Funding Source: Sandia National Labs
Duration: 4/1/2001 - 9/30/2002

Description: Evaluation of the influence of network topology and mapping on the performance of parallel applications on clusters. Large clusters constructed with commodity computers and networking technology are very attractive due to their cost effectiveness. Unlike parallel systems such as the Cray T3E, IBM SP-2, and the Sandia Tflops machine, where the interconnection topology is fixed by the vendor, clusters based on commodity processors and switches allow greater flexibility for the interconnection topology. There is a dearth of previous studies on the impact of interconnection topology on application performance. We are conducting an in-depth evaluation of the influence of network topology and processor mapping strategy on application performance.