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cs.NI2026
CCAaaS: An Orchestration Platform for High-Velocity Design, Development, and Deployment of Data Center Transports at Meta
Prankur Gupta, Balasubramanian Madhavan, Miao Xu +7
Today, data center networks run multiple congestion control algorithms (CCAs), each tailored to distinct traffic characteristics, from latency-sensitive intra-region RPCs to high-t…
cs.NI2026
From ASIC to Fleet: Lessons from Building and Operating a Hyperscaler NIC
Prankur Gupta, Alexander Duyck, Jakub Kicinski +25
We describe the operational infrastructure built to deploy and operate fbnic, a custom multi-host NIC, across hundreds of thousands of production hosts at Meta. Vendor multi-host N…
cs.NI2026
HCCL: Collective Communication for Meta Training and Inference Accelerators
Wesley Bland, Tiago Antunes, Lars Paul Huse +63
We present HCCL, a collective communication library co-designed with Meta's MTIA 300 accelerator, the first Meta chip to integrate backend networking directly on chip package. MTIA…