Author

Siyuan Shen

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Preprint Oct 2026

PCM: Programmable Congestion Management for Terabit RDMA NICs

Datacenter congestion control (CC) and load balancing (LB) evolve rapidly as workload demands change, but deployment depends on RDMA hardware and transport interfaces. Emerging programmable RDMA engines tie policy code to vendor APIs. Operators must therefore port each policy for every platform they deploy. We address...

Mikhail Khalilov, Timo Schneider, Tommaso Bonato et al. · 0 citations

Jul 2026

Every Microsecond Matters: Achieving Near Speed-of-Light Latency in GPU Collectives

Building on NCCL's device-side API, low-latency interfaces for constructing custom collective kernels are developed and used to implement new symmetric collectives in NCCL, demonstrating benefits for both AI inference and traditional HPC workloads.

Siyuan Shen, Anton Korzh, J. Bachan et al. · arXiv.org · 0 citations