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S4BXI: the MPI-ready Portals 4 Simulator

Abstract : We present a simulator for High Performance Computing (HPC) interconnection networks. It models Portals 4, a standard low-level API for communication, and it allows running unmodified applications that use higher-level network APIs such as the Message Passing Interface (MPI). It is based on SimGrid, a framework used to build single-threaded simulators based on a cooperative actor model. Unlike existing tools like SMPI, we rely on an actual MPI implementation, hence our simulation takes into account MPI's implementation details in the performance. This paper also presents a case study using the BullSequana eXascale Interconnect (BXI) made by Atos, which highlights how such a simulator can help design space exploration (DSE) for new interconnects.
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Contributor : Julien Emmanuel Connect in order to contact the contributor
Submitted on : Tuesday, October 5, 2021 - 5:06:59 PM
Last modification on : Tuesday, October 25, 2022 - 4:25:13 PM
Long-term archiving on: : Thursday, January 6, 2022 - 8:12:03 PM


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Julien Emmanuel, Matthieu Moy, Ludovic Henrio, Grégoire Pichon. S4BXI: the MPI-ready Portals 4 Simulator. MASCOTS 2021 - 29th IEEE International Symposium on the Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, Nov 2021, Houston, United States. pp.1-8, ⟨10.1109/MASCOTS53633.2021.9614285⟩. ⟨hal-03366573⟩



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