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[Fix] Drop deprecated tl.extra.cuda.libdevice prefix - #1005
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mainline triton dropped the implicit CUDA->extra conversion, so tl.extra.cuda.libdevice.round now raises. use tl.extra.libdevice.round which is backend-agnostic.
zhiyuan1i
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Jul 6, 2026
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mainline triton dropped implicit conversion for `tl.extra.cuda.` (the old CUDA-namespaced spelling). recent nightly builds now raise:
```
RuntimeError: Implicit conversion of CUDA __nv_roundf device function has been dropped;
please, update your source program to use triton.language.extra.
to replace triton.language.extra.cuda.
```
which currently breaks bitnet at import/compile time. two call sites in `fla/modules/fused_bitlinear.py`, both switched to `tl.extra.libdevice.round` (backend-agnostic).
verified on rocm7.2 + torch 2.14 nightly with a source-built triton at the latest main.