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Fix barrier ID
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Update copyright to include 2026
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* replace autograd.grad with autograd.backward
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* get/set graphable rng state
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* fix lint
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* Fix incorrect calculation of segment pos from segment ids for thd cases and load balanced cases in from_segment_ids_and_pos. Enforce passing of segment_pos for THD cases and lod balanced cases
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* Correct the assert condition
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* Modify fused attn tests to pass new args to from_segment_ids_and_pos()
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* Calculate seg ids before pos
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* 1. Change the signature for from_segment_ids_and_pos()
2. Add support for THD in from_segment_ids_and_pos()
3. Assert if load balanced segment_ids is passed to generate a segment_pos
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* nit: Fix typo to use seg_ids instead of segment_ids
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* nit: Fix comments
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* Modify the function call to differentiate between load balancing and actually reordered segment_ids and segment_pos
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* [PyTorch] Fuse permute+pad and unpermute+unpad ops for FP8 optimization

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* add padding + merging probs bwd support. Not tested
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* rowwise colwise RHT group quant v1
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