Topology configuration in hybrid EPS/OCS interconnects

Authors:
Konstantinos Christodoulopoulos;Marco Ruffini;Donal O'Mahony;Kostas Katrinis
Affiliations:
School of Computer Science and Statistics, Trinity College Dublin, Ireland;School of Computer Science and Statistics, Trinity College Dublin, Ireland;School of Computer Science and Statistics, Trinity College Dublin, Ireland;IBM Research, Ireland
Venue:
Euro-Par'12 Proceedings of the 18th international conference on Parallel Processing
Year:
2012

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Abstract

We consider a hybrid Electronic Packet Switched (EPS) and Optical Circuit Switched (OCS) interconnection network (IN) for future HPC and DC systems. Given the point-to-point communication graph of an application, we present a heuristic algorithm that partitions logical parallel tasks to compute resources and configures the (re-configurable) optical part of the hybrid IN to efficiently serve point-to-point communication. We measure the performance of a hybrid IN employing the proposed algorithm using real workloads, as well as extrapolated traffic, and compare it against application mapping on conventional fixed, electronic-only INs based on toroidal topologies.