Modified Message Passing Interface Algorithm and Its Architecture to Improve Broadcast Communications on Multiprocessor System-on-Chip
This paper presents a modified message passing interface algorithm and its hardware architecture to improve broadcast communications on a multiprocessor system-on-chip. Communication conflict decreases broadcast communication performance seriously, and the proposed architecture minimizes conflict-generated waiting time because it can execute the point-to-point communications regardless of order. When the message passing interface unit of the root node receives broadcast communication, it looks for the corresponding ready messages in the ready queue. If the message passing interface unit finds the corresponding ready message successfully, it transmits the data to the leaf node for the searched message regardless of order. To support these operations, a distributor and a broadcast mask bit are added to the message passing interface unit. We designed the proposed architecture with System C language to verify its functional behavior and to analyze its performance. The simulation results show that the proposed architecture improves broadcast communication performance by up to 78%, which means that the proposed architecture is useful in improving the overall performance of a multiprocessor system on a chip.
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Document Type: Research Article
Publication date: December 1, 2013
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