762657afd2Studio's MLX training worker explicitly pinned ``max_grad_value=5.0``
into the ``MLXTrainingConfig`` so it would override the zoo default
regardless. The 5.0 threshold was effectively no protection -- per-
element transformer gradients in steady state are 1e-3..1e-1, so
|g_i| > 5 basically never fires even on spike batches, mixed-precision
overflow, or RL gradient bursts.
Switch to 1.0:
- matches the universal LLM clip_grad_norm=1.0 baseline (HF Trainer
/ TRL / PEFT / AutoTrain) while staying on MLX's fast per-element
``tree_map(mx.clip)`` path (no global reduction)
- actually catches outliers without distorting Adam's normalised
updates (typical post-warmup |g_i| << 1.0)
- lines up with the new MLXTrainingConfig default in
unslothai/unsloth-zoo so Studio doesn't silently disagree with
what zoo ships
No UI change; the TODO to expose grad clipping in Studio settings
remains. Existing trained runs are unaffected: only newly-spawned
training workers pick up the tighter clip.
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| .. | ||
| __init__.py | ||
| resume.py | ||
| trainer.py | ||
| training.py | ||
| worker.py | ||