On Benchmarking Collective MPI Operations

Authors:
Thomas Worsch;Ralf Reussner;Werner Augustin
Affiliations:
-;-;-
Venue:
Proceedings of the 9th European PVM/MPI Users' Group Meeting on Recent Advances in Parallel Virtual Machine and Message Passing Interface
Year:
2002

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Abstract

This article concentrates on recent work on benchmarking collective operations with SKaMPI. The goal of the SKaMPI project is the creation of a database containing performance measurements of parallel computers in terms of MPI operations. These data support software developers in creating portable and fast programs. Existing algorithms for measuring the timing of collective operations are discussed and a new algorithm is presented, taking into account the differences of local clocks. Results of measurements on a Cray T3E/900 and an IBM RS 6000 SP are presented.