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Clarify cuPhoton distribution contents #37

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tpn merged 1 commit into from
Sep 23, 2026
Merged

Clarify cuPhoton distribution contents #37

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24 changes: 19 additions & 5 deletions THIRD_PARTY_NOTICES.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,11 +2,12 @@

cuPhoton does not intentionally vendor third-party source code. Python runtime,
optional-development, and build requirements are declared in
[`pyproject.toml`](pyproject.toml). Native system requirements are documented
separately below. `uv.lock` records the reproducible resolution for the project
Python dependency profiles. Build-system requirements are resolved separately
by the PEP 517 build frontend and are not locked by `uv.lock`; they are labeled
`not locked` below.
[`pyproject.toml`](pyproject.toml). Optional distributed runtimes and native
system requirements are documented separately below. `uv.lock` records the
reproducible resolution for the project Python dependency profiles; it does
not include the separately installed DragonHPC, `mpi4py`, or MPI runtimes.
Build-system requirements are resolved separately by the PEP 517 build
frontend and are not locked by `uv.lock`; they are labeled `not locked` below.

cuPhoton uses `uv` to resolve Python distributions from the registries
recorded in `uv.lock` (currently the Python Package Index). NVIDIA-authored
Expand Down Expand Up @@ -180,3 +181,16 @@ uv sync --locked --extra dev --extra gpu --extra viz
```

For a CPU-only development environment, replace `gpu` with `torch`.

## cuPhoton distribution contents

`make build` creates a pure-Python wheel with the xDataReader native extension
disabled (`CUPHOTON_XDR_BUILD_EXT=0`) and a source distribution containing
cuPhoton's own extension sources. Both artifacts include `LICENSE` and this
notice file. Dependencies listed here are installed separately; these builds
do not bundle DragonHPC, `mpi4py`, MPI, CFITSIO, or CUDA libraries.

A source build with the native extension enabled links against the available
CFITSIO and CUDA libraries. A distributor that bundles libraries, including
through static linking, must inventory the resulting artifact and retain the
applicable third-party licenses and notices.
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