#prefill-decode

UCCL-Zip Brings Lossless Compression to NCCL Collectives — 47.5% Faster RL Weight Sync and 10% Lower vLLM Latency

UCCL-Zip fuses lossless compression into NCCL and GPU P2P transfers, cutting RL weight sync by 47.5% and vLLM latency by 10% with no API changes and bit-identical outputs.