unsloth/studio
Daniel Han ae2b1b97ba
fix(studio): add pip-installed nvidia CUDA libs to LD_LIBRARY_PATH for llama-server (#4590)
The prebuilt llama.cpp binary (cuda13-newer) links against
libcudart.so.13 and libcublas.so.13. When torch is installed via pip,
these libraries live in the venv's site-packages under
nvidia/cu13/lib/, not in /usr/local/cuda/.

The existing LD_LIBRARY_PATH logic only searched /usr/local/cuda*
paths (which have CUDA 12.x), so the CUDA backend failed to load
silently and llama-server fell back to CPU -- even with -ngl -1.

This adds a glob scan of the venv's nvidia package directories
(cu*, cudnn, nvjitlink) to LD_LIBRARY_PATH before launching
llama-server, matching where pip puts the CUDA runtime.

Tested on Colab with RTX PRO 6000 Blackwell (CUDA 13.0, pip torch):
before -- 3 MiB GPU, 0% util, CPU inference
after  -- 13317 MiB GPU, 77% util, full GPU inference

Co-authored-by: Daniel Han <danielhanchen@users.noreply.github.com>
2026-03-25 06:24:40 -07:00
..
backend fix(studio): add pip-installed nvidia CUDA libs to LD_LIBRARY_PATH for llama-server (#4590) 2026-03-25 06:24:40 -07:00
frontend studio: stabilize reasoning panel scroll behavior and prevent composer overlap (#4587) 2026-03-25 05:32:31 -07:00
__init__.py Final cleanup 2026-03-12 18:28:04 +00:00
install_llama_prebuilt.py Use prebuilt llama.cpp for unsloth studio setup (#4562) 2026-03-25 05:42:43 -07:00
install_python_stack.py Consolidate dual venvs and separate install from update (#4530) 2026-03-25 05:24:21 -07:00
LICENSE.AGPL-3.0 Add AGPL-3.0 license to studio folder 2026-03-09 19:36:25 +00:00
setup.bat Final cleanup 2026-03-12 18:28:04 +00:00
setup.ps1 Use prebuilt llama.cpp for unsloth studio setup (#4562) 2026-03-25 05:42:43 -07:00
setup.sh Use prebuilt llama.cpp for unsloth studio setup (#4562) 2026-03-25 05:42:43 -07:00
Unsloth_Studio_Colab.ipynb Created using Colab 2026-03-22 04:57:26 -07:00