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nemo-mbridge-perf-sequence-packing

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Validate and use packed sequences and long-context training in Megatron-Bridge, including offline LLM packing, collate-time VLM packing, Energon online packing, and CP constraints.

skills/nemo-mbridge-perf-sequence-packing/SKILL.md

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# Sequence Packing Skill

For stable background and recommendation level, see:

- @docs/training/packed-sequences.md
- @skills/nemo-mbridge-perf-sequence-packing/card.yaml

## Enablement

Offline packed SFT for LLM finetuning:

```python
import math
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