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Report No.

Development of an MPI benchmark program library

Uehara, Hitoshi

Distributed parallel simulation software with message passing interfaces has been developed to realize large-scale and high performance numerical simulations. The most popular API for message communication is an MPI. The MPI will be provided on the Earth Simulator. It is known that performance of message communication by using the MPI libraries gives a significant influence to a whole performance of simulation programs. We developed an MPI benchmark program library named MBL in order to measure the performance of message communication precisely. The MBL measures the performance of major MPI functions such as point-to-point communications and collective communications and the performance of major communication patterns which are often found out in conventional applications. In this report, the description of the MBL and the performance analysis of the MPI/SX measured on the SX-4 are presented.



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