Files
foxhunt/crates
jgrusewski 03ad33fda4 fix(bf16): EventTrackingGuard for post-graph kernel launches
Root cause: cudarc event tracking left stale state after CUDA graph
replay, causing INVALID_VALUE on subsequent kernel launches.
Fix: add EventTrackingGuard to clip_grad_buf_inplace (same pattern
as read_grad_norm_sync, apply_spectral_norm, etc.).

Smoke test now runs 3 epochs / 600 steps successfully.
Q-values diverge (bf16 precision) — needs hyperparameter tuning
for bf16 (lower lr, smaller Huber delta, tighter gradient clip).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-28 15:50:38 +01:00
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