## Support Python wheel build
This PR modernizes the Python packaging for MSCCL++ by defining
dependencies and optional extras in `pyproject.toml`, enabling proper
wheel builds with `pip install ".[cuda12]"`.
### Changes
**`pyproject.toml`**
- Add `dependencies` (numpy, blake3, pybind11, sortedcontainers)
- Add `optional-dependencies` for platform-specific CuPy (`cuda11`,
`cuda12`, `cuda13`, `rocm6`), `benchmark`, and `test` extras
- Bump minimum Python version from 3.8 to 3.10
**`test/deploy/setup.sh`**
- Use `pip install ".[<platform>,benchmark,test]"` instead of separate
`pip install -r requirements_*.txt` + `pip install .` steps
- Add missing CUDA 13 case
**`docs/quickstart.md`**
- Update install instructions to use extras (e.g., `pip install
".[cuda12]"`)
- Document all available extras and clarify that `rocm6` builds CuPy
from source
- Update Python version references to 3.10
**`python/csrc/CMakeLists.txt`**, **`python/test/CMakeLists.txt`**
- Update `find_package(Python)` from 3.8 to 3.10
### Notes
- The `requirements_*.txt` files are kept for Docker base image builds
where only dependencies (not the project itself) should be installed.
- CuPy is intentionally not in base dependencies — users must specify a
platform extra to get the correct pre-built wheel (or source build for
ROCm).
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
## Summary
- **Multi-node H100 CI setup**: Improve architecture detection and GPU
configuration
- **Remove hardcoded VMSS hostnames** from deploy files
- **Fix CUDA compat library issue**: Remove stale compat paths from
Docker image for CUDA 12+. Instead, `peer_access_test` now returns a
distinct exit code (2) for CUDA init failure, and `setup.sh`
conditionally adds compat libs only when needed. This fixes
`cudaErrorSystemNotReady` (error 803) when the host driver is newer than
the container's compat libs.
- **Speed up deploy**: Replace recursive `parallel-scp` with
tar+scp+untar to avoid per-file SSH overhead.
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This pull request updates the deployment pipeline to allow custom CMake
arguments to be passed to the pip install process on remote VMs.
---------
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
