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- Update torch_version to 2.8.0 - Fix Linux libtorch URL format (no longer has cxx11-abi in filename) - Add Declarations-2.8.0.yaml generated from PyTorch v2.8.0 - Update torchgen default version to 2.8.0 New functions in 2.8.0: - _fused_rms_norm - _weight_int4pack_mm_with_scales_and_zeros - _grouped_mm Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Bump TORCH_VERSION to 2.8.0 - Update Linux URL format (no cxx11-abi in 2.8.0 filenames) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Thanks @TroyHernandez ! We'll also need to update the lantern headers in https://github.com/mlverse/torch/tree/main/src/lantern/headers |
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Summary
cxx11-abifrom filenames)Why 2.8.0?
PyTorch 2.8 introduced the stable libtorch ABI, which means code compiled against 2.8 can link with 2.9, 2.10, etc. without recompiling. This is a good foundation for future upgrades.
API Changes
No breaking changes. Only 3 new functions added:
_fused_rms_norm_weight_int4pack_mm_with_scales_and_zeros_grouped_mmTesting
Built and tested locally on Ubuntu 24.04 with CUDA 12.8. Basic tensor operations and matmul chains work correctly.
Notes
This PR includes the code changes but lantern binaries would need to be rebuilt against libtorch 2.8.0 and uploaded to the CDN.
Happy to help with any adjustments needed.
🤖 Generated with Claude Code