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This paper demonstrates the benefits and pit-falls of implementing the collective communication operation reduce in the reconfigurable resources of an FPGA device across a cluster of all-FPGA compute nodes. Specifically, the communication and computation semantics of the MPI_Reduce call from the de facto Message-Passing Interface have been implemented. Using a synthetic benchmark a cluster of 32 FPGA...
Message-Passing is the dominant programming model for distributed memory parallel computers and Message-Passing Interface (MPI) is the standard. Along with point-to-point send and receive message primitives, MPI includes a set of collective communication operations that are used to synchronize and coordinate groups of tasks. The MPI_Barrier, one of the most important collective procedures, has been...
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