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Title:
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PERFORMANCE EVALUATION OF WINOCS FOR PARALLEL WORKLOADS BASED ON COLLECTIVE COMMUNICATIONS |
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Author(s):
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Poliana A. C. Oliveira, Fátima L. P. D. Figueiredo, Carlos A. P. S. Martins, Henrique C. Freitas, Christiane P. Ribeiro, Márcio Castro, Vania Marangozova-Martin, Jean-François Méhaut |
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ISBN:
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978-989-8533-06-7 |
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Editors:
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Hans Weghorn, Leonardo Azevedo and Pedro Isaías |
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Year:
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2011 |
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Edition:
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Single |
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Keywords:
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Wireless Network-on-Chip, Parallel and Collective Communications, Performance Evaluation, Many-core Processors. |
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Type:
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Full Paper |
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First Page:
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307 |
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Last Page:
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314 |
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Language:
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English |
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Cover:
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Full Contents:
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click to dowload 
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Paper Abstract:
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Many-core processors have become the main alternative to achieve petascale and exascale computing. In order to support the on-chip demand for scalability, Networks-on-Chip (NoCs) emerge as alternative to enhance the efficiency and performance. However, wire constraints based on metal properties can limit the packets throughput. For this reason, research works have focused on Wireless NoCs with higher bandwidth. This way, our goal is to evaluate the capability of WiNoC architectures (ad-hoc and infrastructured) to support intensive packet traffic from collective communication patterns, common in parallel programs. A well-known Network Simulator (NS) was configured with WiNoC parameters and communication scenarios, allowing us to evaluate performance of WiNoC architectures. The results point out to radio interference as the main problem to support collective communication scenarios, and the ad-hoc WiNoC as better option than the infrastructured one. We conclude that the execution characteristics of parallel programs, such as transmission start time of collective communications can exploit WiNoCs in order to achieve high performance. |
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