build: pin Megatron-LM odd top-k fallback - #20
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Advance Megatron-LM to the cuDNN DSA odd top-k fallback so packed CP segments avoid the frontend vector-width assertion. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Test plan
[235, 705]odd top-K primitive passes on B200Made with Cursor