Proceedings International Conference on Parallel Processing
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Abstract

In this paper, we investigate how system area networks can deal with transient and permanent network failures. We design an implement a firmware-level retransmission scheme to tolerate transient failures and an on-demand network mapping scheme to deal with permanent failures. Both schemes are transparent to applications and are conceptually simple and suitable for low-level implementations, e.g. in firmware. We then examine how the retransmission scheme affects system performance and how various protocol parameters impact system behavior. We analyze and evaluate system performance by using a real implementation on a state-of-the art cluster an both micro-benchmarks and real applications from the SPLASH-2 suite.
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