2008
EMSS 2008 Proceeding
Analysis of time warp on a 32,768 processor ibm blue Gene/L supercomputer
Authors: Akintayo O. Holder, Christopher D. Carothers
Abstract
The aim of our work is to investigate the performance and overall scalability of an optimistic discrete-event simulator on a Blue Gene/L supercomputer. We find that strong scal- ing out to 16,384 processors is possible. In terms of event- rate, we observed 853 million events per second on 16,384 processors for the PHOLD benchmark. This is 1.5 times faster than any previously reported PDES synchronization protocol for PHOLD executing on a Blue Gene/L super- computer (e.g. conservative, optimistic or hybrid). Addi- tionally, we observed 2.47 billion events per second for a PCS telephone network model when executed on 32,768 processors. To the best of our knowledge, this is the first multi-billion event rate achieved for any Time Warp model executing on a Blue Gene/L supercomputer.
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