[slimtensor] Enable CUDA tensor copy #16440
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This diff enables CUDA tensor copy operations in SlimTensor.
**Key changes:**
**`core/SlimTensor.h`** - Extended for CUDA support:
- Updated `copy_()` to handle cross-device copies:
- CPU→CUDA (cudaMemcpyHostToDevice)
- CUDA→CPU (cudaMemcpyDeviceToHost)
- CUDA→CUDA (cudaMemcpyDeviceToDevice, same device)
- Cross-device copies require contiguous tensors
- CPU-to-CPU copies continue to support non-contiguous (strided) tensors
Differential Revision: [D89941235](https://our.internmc.facebook.com/intern/diff/D89941235/)
[ghstack-poisoned]
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16440
Note: Links to docs will display an error until the docs builds have been completed. ⏳ No Failures, 131 PendingAs of commit f19ea68 with merge base 35eb01a ( This comment was automatically generated by Dr. CI and updates every 15 minutes. |
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This diff enables CUDA tensor copy operations in SlimTensor.
**Key changes:**
**`core/SlimTensor.h`** - Extended for CUDA support:
- Updated `copy_()` to handle cross-device copies:
- CPU→CUDA (cudaMemcpyHostToDevice)
- CUDA→CPU (cudaMemcpyDeviceToHost)
- CUDA→CUDA (cudaMemcpyDeviceToDevice, same device)
- Cross-device copies require contiguous tensors
- CPU-to-CPU copies continue to support non-contiguous (strided) tensors
Differential Revision: [D89941235](https://our.internmc.facebook.com/intern/diff/D89941235/)
[ghstack-poisoned]
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Stack from ghstack (oldest at bottom):
This diff enables CUDA tensor copy operations in SlimTensor.
Key changes:
core/SlimTensor.h- Extended for CUDA support:copy_()to handle cross-device copies:Differential Revision: D89941235