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* change moe_chunk_permute to moe_sort_chunks_by_indices

* fix __all__ in pytorch/permutation.py

* fix func/var names and typos; update tols in UT

---------
Signed-off-by: Hongxiao Bai <hongxiaob@nvidia.com>
Co-authored-by: Phuong Nguyen <phuonguyen@nvidia.com>
Co-authored-by: Tim Moon <tmoon@nvidia.com>

* POC for segment_ids/segment_pos
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Change segment_pos position
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Use RemainingArgs to solve number of parameters mismatches
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Test mask_descriptor for accomendating different mask representations
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Fix bugs
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Use descriptor in bwd
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Primitives only accepts pure jnp array
Signed-off-by: Reese Wang <rewang@nvidia.com>

* segment_ids/pos support POC
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Move seqlens/offsets generation to mask descriptor
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Rename MaskDescriptor to SequenceDescriptor
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Generalize get_seqlens_and_offsets
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Utilize sequence desc on FA bwd
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Migrate to new API
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Add docstrings
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Remove small inputs and test different input format
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Fix lint
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Fix seed shardings
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Optimize sequence converting overhead
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Optimize seq_offsets calculation
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Fix up
Signed-off-by: Reese Wang <rewang@nvidia.com>

* fix lint
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Fix conflicts
Signed-off-by: Reese Wang <rewang@nvidia.com>

* Remove reduntant line
Signed-off-by: Reese Wang <rewang@nvidia.com>

---------
Signed-off-by: Reese Wang <rewang@nvidia.com>