Interconnect performance evaluation of SGI altix 3700 BX2, cray X1, cray opteron cluster, and dell PowerEdge

Authors:
Rod Fatoohi;Subhash Saini;Robert Ciotti
Affiliations:
Computer Engineering Department, San Jose State Univeristy, San Jose, California;NASA Ames Research Center, Moffett Field, California;NASA Ames Research Center, Moffett Field, California
Venue:
IPDPS'06 Proceedings of the 20th international conference on Parallel and distributed processing
Year:
2006

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Abstract

We study the performance of inter-process communication on four high-speed multiprocessor systems using a set of communication benchmarks. The goal is to identify certain limiting factors and bottlenecks with the interconnect of these systems as well as to compare these interconnects. We measured network bandwidth using different numbers of communicating processors and communication patterns - such as point-to-point communication, collective communication, and dense communication patterns. The four platforms are: a 512-processor SGI Altix 3700 BX2 shared-memory machine with 3.2 GB/s links; a 64- processor (single-streaming) Cray X1 shared-memory machine with 32 1.6 GB/s links; a 128-processor Cray Opteron cluster using a Myrinet network; and a 1280- node Dell PowerEdge cluster with an InfiniBand network. Our results show the impact of the network bandwidth and topology on the overall performance of each interconnect.