The paper describes some very early experiments on new architectures that support the hybrid programming model. Our results are promising in that OpenMP threads interact with MPI as desired, allowing OpenMP-agnostic tools to be used. We explore three environments: a "typical" Linux cluster, a new large-scale machine from SiCortex, and the new IBM BG/P, which have quite different compilers and runtime systems for both OpenMP and MPI. We look at a few simple, diagnostic programs, and one "application-like" test program. We demonstrate the use of a tool that can examine the detailed sequence of events in a hybrid program and illustrate that a hybrid computation might not always proceed as expected. © 2008 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Lusk, E., & Chan, A. (2008). Early experiments with the openmp/mpi hybrid programming model. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5004 LNCS, pp. 36–47). Springer Verlag. https://doi.org/10.1007/978-3-540-79561-2_4
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