PyTorch 2.15 Released with New NCCL Backend and NVFP4 Support

PyTorch has released version 2.15, making its rewritten NCCL backend official and speeding up NVFP4 decoding on Blackwell hardware, with a live release Q&A hosted by Meta team members on November 5.

2026-11-03 ~ 2026-11-05 · 2 related posts

• PyTorch 2.15 Q&A set: NCCL rewrite now default, faster NVFP4 decode on Blackwell — PyTorch · 2026-11-03

1 near-duplicate retellings: PyTorch