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Effects of Using a Memory Stalled Core for Handling MPI Communication Overlapping in the SOR Solver on SX-ACE and SX-Aurora TSUBASA
2020
Supercomputing Frontiers and Innovations
Modern high-performance computing (HPC) systems consist of a large number of nodes featuring multi-core processors. Many computational fluid dynamics (CFD) codes utilize a Message Passing Interface (MPI) to exploit the potential of such systems. In general, the MPI communication costs increase as the number of MPI processes increases. In this paper, we discuss performance of the code in which a core is used as a dedicated communication core when the core cannot contribute to the performance
doi:10.14529/jsfi200401
fatcat:glu5b7th6jaglpxh4pnty64ife