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Issue No. 04 - April (2007 vol. 18)
ISSN: 1045-9219
pp: 498-510
Jos? Duato , IEEE
<p><b>Abstract</b>—InfiniBand Architecture (IBA) is envisioned to be the default communication fabric for future system area networks (SANs) or clusters. However, IBA design is currently in its infancy since the released specification outlines only higher level functionalities, leaving it open for exploring various design alternatives. In this paper, we investigate four corelated techniques for providing high and predictable performance in IBA. These are: 1) using the Shortest Path First (SPF) algorithm for deterministic packet routing, 2) developing a multipath routing mechanism for minimizing congestion, 3) developing a selective packet dropping scheme to handle deadlock and congestion, and 4) providing multicasting support for customized applications. These designs are implemented in a pipelined, IBA-style switch architecture, and are evaluated using an integrated workload consisting of MPEG-2 video streams, best-effort traffic, and control traffic on a versatile IBA simulation testbed. Simulation results with 15-node and 30-node irregular networks indicate that the SPF routing, multipath routing, packet dropping, and multicasting schemes are quite effective in delivering high and assured performance in clusters.</p>
InfiniBand architecture, multicasting, multipathing, NIC/HCA, packet dropping, quality of service, system area network.

M. Yousif, K. H. Yum, J. Duato, E. J. Kim and C. R. Das, "Exploring IBA Design Space for Improved Performance," in IEEE Transactions on Parallel & Distributed Systems, vol. 18, no. , pp. 498-510, 2007.
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