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Pack Megatron SFT batches with shared prefix trees
- #905
#905
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PeterWofford
merged 6 commits into
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OpenPipe/ART:main
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austin/lightning_sft_performance
OpenPipe/ART:austin/lightning_sft_performance
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Sep 16, 2026
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Pack Megatron SFT batches with shared prefix trees
#905
PeterWofford
merged 6 commits into
main
OpenPipe/ART:main
from
austin/lightning_sft_performance
OpenPipe/ART:austin/lightning_sft_performance
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Commits on Sep 15, 2026
Pack SFT optimizer batches with shared prefix-tree geometry
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Keep Nemotron-H expert routing bias frozen during LoRA training
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Preserve admitted SFT row geometry and reject nonfinite updates
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Commits on Sep 16, 2026
Preserve shared-expert CUDA stream handoffs across AOT compilation
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Merge main to align GPU CI workflow and checked-out launcher
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ci: Run SFT packing regression tests
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