Hiding Communication Latency and Coherence Overhead in Software DSMs (1996)
| Citations: | 43 - 6 self |
BibTeX
@MISC{Bianchini96hidingcommunication,
author = {R. Bianchini and L. I. Kontothanassis and R. Pinto and M. De Maria and M. Abud and C. L. Amorim},
title = {Hiding Communication Latency and Coherence Overhead in Software DSMs},
year = {1996}
}
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Abstract
In this paper we propose the use of a PCI-based programmable protocol controller for hiding communication and coherence overheads in software DSMs. Our protocol controller provides three different types of overhead tolerance: a) moving basic communication and coherence tasks away from computation processors; b) prefetching of diffs; and c) generating and applying diffs with hardware assistance. We evaluate the isolated and combined impact of these features on the performance of TreadMarks. We also compare performance against two versions of the Shrimp-based AURC protocol. Using detailed execution-driven simulations of a 16-node network of workstations, we show that the greatest performance benefits provided by our protocol controller come from our hardware-supported diffs. Reducing the burden of communication and coherence transactions on the computation processor is also beneficial but to a smaller extent. Prefetching is not always profitable. Our results show that our protocol contr...
