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* add grouped_tensor classes and helpers
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* rm non-contiguous option and dptrs
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci



* address comments + rework CheckIn/OutputGroupedTensor
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci



* fix for compilation
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* make first_dims/last_dims optional + data.shape 2d
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* added assertion
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* rs conflicts
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* add data.shape info
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* added logical shape field
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci



* compilation fix
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* fixed issues raised by greptile
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* return default dtype when grouped_tensor is empty
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* use has_data() for dim queries
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* update comments
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* fix index bound
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* Update transformer_engine/common/transformer_engine.cpp
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* Update transformer_engine/common/transformer_engine.cpp
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* restore Tensor.has_data() + add experimental marks
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* restore Tensor::has_columnwise_data
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

* cleanup
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>

---------
Signed-off-by: Phuong Nguyen <phuonguyen@nvidia.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>