Month: 2025-12 — Facebook Research / xformers: focused bug fix delivering improved stability for large-scale transformer workloads. This month’s work centers on a critical SplitK kernel issue in Triton, resolved by changing offset data types from int32 to int64 to properly handle larger offsets. The fix eliminates a path to incorrect behavior or crashes when processing long sequences or large batch sizes, enhancing reliability in production training/inference pipelines. Impact: Increased correctness and stability for users deploying large transformer models; reduced risk of runtime failures in high-offset scenarios; easier future maintenance thanks to clear traceability to the linked issue and commit. Notes: Commit 89d3014ffc622c370caabd48df5bcd27ee64f37f references fairinternal/xformers#1462 and serves as the primary patch for this fix.

February 2025 monthly summary for mosaicml/llm-foundry focusing on API hygiene and stability improvements to support scalable data-loading pipelines and smoother contributor experiences. Delivered a targeted DataLoader API cleanup that reduces maintenance burden and mitigates runtime issues without altering user-facing behavior.