Month: 2026-03 — Delivered a critical bug fix in tt-metal to preserve 32-bit integer integrity during data copy and transpose. Corrected MOVB2D handling to avoid corruption of the lower 16 bits, ensuring accurate data for operations such as broadcast, concat, and permute. The patch preserves lo16 before updating hi16 and restores it to the destination, eliminating reliance on hardware-specific behavior and improving determinism in 32-bit data paths. Commit: 700b5e9741abf5d2b5946bef83ddd53cb55980be.

February 2026 focused on strengthening data integrity in the tt-umd subsystem by hardening hashing for xy_pair and cxy_pair to prevent collisions and data corruption across the tt stack. The change replaces the weak XOR-based hash with a stronger hash combine, validated through tt_metal CoreCoords hashing tests and a known reproducer, with no API changes. This work enhances reliability of the kernel cache and dependent components, reducing risk of silent data corruption and improving overall system stability.