feat(cli): use CUDA 12.9 as the workstation default - #2638
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JackRao123
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jerryhong21
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Sep 1, 2026
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Summary
nvidia/cuda:12.9.1-devel-ubuntu24.04Why
HybridEP runtime-JIT kernels require CUDA 12.9's CCCL/libcu++ headers. The current workstation default is CUDA 12.8.1, so the pinned DeepEP HybridEP kernel fails to compile at startup on B200.
This also covers the
devbox-upworkflow, which launches boxes throughtruss train workstationwithout an image override.Companion production-image PR: https://github.com/basetenlabs/trainers/pull/1262
Validation
uv run ruff format truss/cli/train/workstation.py truss/tests/cli/train/test_workstation.pyuv run ruff check truss/cli/train/workstation.py truss/tests/cli/train/test_workstation.pyuv run pytest truss/tests/cli/train/test_workstation.py -v(26 passed)