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Adaptive communication algorithms for distributed heterogeneous systems

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3 Author(s)
Bhat, P.B. ; Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA ; Prasanna, V.K. ; Raghavendra, C.S.

Heterogeneous network-based systems are emerging as attractive computing platforms for HPC applications. We discuss fundamental research issues that must be addressed to enable network-aware communication at the application level. We present a uniform framework for developing adaptive communication schedules for various collective communication patterns. Schedules are developed at run-time, based on network performance information obtained from a directory service. We illustrate our framework by developing communication schedules for total exchange. Our first algorithm develops a schedule by computing a series of matchings in a bipartite graph. We also present a O(P3) heuristic algorithm, whose completion time is within twice the optimal. This algorithm is based on the open shop scheduling problem. Simulation results show performance improvements of a factor of 5 over well known homogeneous scheduling techniques

Published in:

High Performance Distributed Computing, 1998. Proceedings. The Seventh International Symposium on

Date of Conference:

28-31 Jul 1998