Optimizing All-to-All Collective Communication by Exploiting Concurrency in Modern Networks
Optimizing All-to-All Collective Communication by Exploiting Concurrency in Modern Networks
复制标题
通过利用现代网络中的并发性来优化所有对所有的集体通信
DOI:
10.1109/sc.2005.51
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
J. Nieplocha
中科院分区:
文献类型:
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作者:
V. Tipparaju;J. Nieplocha
The paper proposes a novel approach for optimizing performance of all-to-all collective communication by taking advantage of concurrency available in modern networks such as Infiniband or Quadrics. Using the MPI AllGather operation as an example, we describe how network concurrency can be exploited in an optimized implementation of this operation. For example, compared to leading MPI implementations for a 32-KB message on 128 processors, our new algorithm yields a 65% improvement on the Infiniband at Virginia Tech and an 89% improvement on the Quadrics cluster at Pacific Northwest National Laboratory.