Journal
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS
Volume 28, Issue 8, Pages 2387-2400Publisher
IEEE COMPUTER SOC
DOI: 10.1109/TPDS.2017.2669305
Keywords
Simulation; MPI runtime and applications; performance prediction and extrapolation
Funding
- Hac Specis Inria Project Lab
- ANR SONGS [11-ANR-INFR-13]
- CNRS PICS [5473]
- European Mont-Blanc (EC) [288777]
- EC [RI-261557, RI-283493]
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This article summarizes our recent work and developments on SMPI, a flexible simulator of MPI applications. In this tool, we took a particular care to ensure our simulator could be used to produce fast and accurate predictions in a wide variety of situations. Although we did build SMPI on SimGrid whose speed and accuracy had already been assessed in other contexts, moving such techniques to a HPC workload required significant additional effort. Obviously, an accurate modeling of communications and network topology was one of the key to such achievements. Another less obvious key was the choice to combine in a single tool the possibility to do both offline and online simulation.
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