Analysis of an MPI Program Using UTE on the IBM SP2

We describe an implementation of a 2D-FFT (Complex-Complex) program in MPI-F on the SP2 and show its actual performance. The purpose of this paper is to illustrate how we use the new tracing utility UTE/MPI provided in MPI-F to verify the correctness of our algorithm, to provide timing statistics summaries, and to unravel other system activities, often unexpected by the user, that affect the total elapsed time of the program. (ScalParSys)

By: Joefon Jann and Hubertus Franke

Published in: RC20085 in 1995


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