[slimtensor] Add from_etensor factory function for ETensor to SlimTensor conversion #16551
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…sor conversion Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/) [ghstack-poisoned]
This was referenced Jan 12, 2026
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16551
Note: Links to docs will display an error until the docs builds have been completed. ❌ 2 New Failures, 1 Unrelated FailureAs of commit 97b11e5 with merge base 2c59f85 ( NEW FAILURES - The following jobs have failed:
BROKEN TRUNK - The following job failed but were present on the merge base:👉 Rebase onto the `viable/strict` branch to avoid these failures
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…sor conversion Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/) ghstack-source-id: 333060891 Pull Request resolved: #16551
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… to SlimTensor conversion" Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/) [ghstack-poisoned]
Gasoonjia
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Jan 12, 2026
…sor conversion Pull Request resolved: #16551 Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads ghstack-source-id: 333062343 @exported-using-ghexport Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/)
… to SlimTensor conversion" Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/) [ghstack-poisoned]
… to SlimTensor conversion" Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device. Key features: - Handles int32_t to int64_t conversion for sizes/strides (ETensor uses int32_t, SlimTensor uses int64_t) - Supports CPU and CUDA target devices via storage()->copy_() - Preserves tensor strides (non-contiguous layouts) - Provides both reference and pointer overloads Differential Revision: [D90539554](https://our.internmc.facebook.com/intern/diff/D90539554/) [ghstack-poisoned]
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Stack from ghstack (oldest at bottom):
Add from_etensor() factory function that creates a SlimTensor from an ExecuTorch portable tensor (ETensor), copying data to a target device.
Key features:
Differential Revision: D90539554