PyTorch 2.9 released
PyTorch 2.9 released — a wider stable libtorch ABI for third-party C++/CUDA extensions, symmetric memory for writing multi-GPU kernels, an error/resume toggle for torch.compile graph breaks, wheel variants for ROCm, XPU and CUDA 13, and FlexAttention enabled on Intel GPUs. 452 contributors and 3,216 commits since 2.8
Why it matters
A direction that lets users write multi-GPU kernels directly at the framework API level. On top of NCCL-style collective communication, user kernels gain one more path
Source — Primary sources first; secondary reports are labelled “Press”
Officialpytorch.orghttps://pytorch.org/blog/pytorch-2-9/Added in Week 36, 2026 · See that week