Efficient Multiple Multicast on Heterogeneous Network of Workstations
The Journal of Supercomputing
Parallel image restoration using surrogate constraint methods
Journal of Parallel and Distributed Computing
Bandwidth efficient all-to-all broadcast on switched clusters
International Journal of Parallel Programming
On Two-Dimensional Sparse Matrix Partitioning: Models, Methods, and a Recipe
SIAM Journal on Scientific Computing
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This paper presents efficient all-to-all broadcast algorithms for arbitrary irregular networks with switch-based wormhole interconnection and unicast message passing. First, all-to-all broadcast is considered within a single switch cluster. Both combining and non-combining algorithms are compared via analytical modeling and simulation. The characteristics of optimal all-to-all broadcast operation are considered and applied to development of multi-switch algorithms. The single switch algorithms are considered on two switch clusters and a near-optimal algorithm is developed which schedules use of interconnecting links where the potential for link contention exists. Finally, the Link Scheduling concept is extended to handle arbitrary irregular networks. Operation of this algorithm is simulated on a 128-node irregular network, and shows a 27.1% improvement in performance compared to other algorithms.