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The authors describe their architecture and implementation for offloading collective operations to programmable logic in the communication substrate. Collective operations are widely used in parallel processing. Their design and implementation strategies affect the performance of many high-performance computing applications that utilize them. Collectives are central to the message passing interface...
This paper describes our architecture and implementation for offloading collective operations to programmable logic in the communication substrate. Collective operations – operations that involve communication between groups of co-operating processes – are widely used in parallel processing. The design and implementation strategies of collective operations plays a significant role in their performance...
Process arrival times at MPI collective operations differ significantly. Addressing this fact with special handling for popular collective communication algorithms can yield performance improvements. The recursive doubling algorithm is one of the most efficient techniques for implementing collectives in MPI, especially for short messages and when the number of participating processes is a power of...
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