PICO is a benchmarking framework for collective operations that decouples portable setup from platform execution, supplies reference MPI implementations, and shows default choices can be up to 5x slower with up to 44% end-to-end training time reductions in simulator replays.
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This study empirically characterizes congestion responses in EDR/HDR/NDR InfiniBand, Cray Slingshot, and Ethernet fabrics under controlled steady and bursty collective communication patterns at multiple system scales.
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PICO: Performance Insights for Collective Operations
PICO is a benchmarking framework for collective operations that decouples portable setup from platform execution, supplies reference MPI implementations, and shows default choices can be up to 5x slower with up to 44% end-to-end training time reductions in simulator replays.
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Characterizing the Impact of Congestion in Modern HPC Interconnects
This study empirically characterizes congestion responses in EDR/HDR/NDR InfiniBand, Cray Slingshot, and Ethernet fabrics under controlled steady and bursty collective communication patterns at multiple system scales.