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Self-adaptive and Topology-aware Broadcast Leveraging Collective Offload on Tianhe Express Interconnect
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DOI：10.1016/j.jpdc.2026.105274.png)
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Abstract
En 中文
• It presents a hardware-software co-design that completely offloads both blocking and non-blocking broadcast operations to the NIC by taking full advantage of the NIC’s collective offload features. • It develops a topology-aware optimization for collective communication. • It proposes a hardware-based non-blocking MPI_Ibcast mechanism. • Extensive experiments conducted on production HPC supercomputers show that the proposed approach can significantly speed up the broadcast at both microbenchmark and application level.
Keywords:
NIC
collective offload
non-blocking broadcast
topology-aware optimization
MPI_Ibcast
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4
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3.8K
Citations:
4.8K
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