{"data":{"slug":"nccl","etype":"software","name":"NCCL","cat":"Compute Platform","subtitle":"The collective-communications library every distributed training run calls.","summary":"NCCL implements the all-reduce, all-gather and broadcast operations that synchronize gradients across thousands of GPUs, tuned to NVLink and InfiniBand topologies. When people say a cluster 'scales well', they are mostly praising NCCL; AMD's RCCL mirrors it.","attrs":null,"kf":{"maker":"NVIDIA","license":"BSD"},"aliases":["RCCL","collective communications"],"ticker":null,"exchange":null,"hq":null,"founded":null,"website":null,"status":"Active","region":null,"asof":"2026-01-15","sources":[{"url":"https://developer.nvidia.com/nccl","label":"NCCL"}]},"meta":{"found":true,"count":1,"served_from":"site cache (no live upstream calls)","as_of":"2026-10-14T09:46:31+00:00","disclaimer":"Research and information only — not investment advice. Structured records carry basis labels (vendor spec / reported / estimate); market quotes are delayed/indicative.","attribution":"Records compiled from vendor documentation, official filings and reputable public reporting; market quotes via financial data providers. See /data-sources."}}