[BUG] CUDA 12 latest-deps wheel tests fail: pylibcudf/libcudf nightly ABI skew (undefined symbol read_parquet_column_chunk_bounds)

Abierto
#1,765 2 comentarios 0 reacciones 1 asignado Ver en GitHub

Los mantenedores suelen responder en 1 día

@Kh4ster ya está trabajando en esto.

Desde el 21/8/2026.

Evaluación

Este issue todavía no se ha evaluado.

Descripción

bug

Describe the bug

CUDA 12 wheel test jobs fail at import time with an undefined symbol error from pylibcudf, before any cuOpt code runs:

ImportError: /pyenv/versions/3.11.16/lib/python3.11/site-packages/pylibcudf/io/parquet_metadata.abi3.so:
  undefined symbol: _ZN4cudf2io32read_parquet_column_chunk_boundsESt4spanIKNS0_7parquet12FileMetaDataE...

demangled: cudf::io::read_parquet_column_chunk_bounds(...)

The import chain that triggers it is from pylibcudf.io.experimental.hybrid_scan import ....

Root cause

The installed libcudf and pylibcudf nightlies are skewed:

libcudf-cu12-26.10.0a291.post260821111824     <- built 11:18
pylibcudf-cu12-26.10.0a292.post260821162058   <- built 16:20, ~5h later

pylibcudf a292 was built against a libcudf that exports read_parquet_column_chunk_bounds; the resolver pinned libcudf a291, which does not. Both satisfy ==26.10.*, so pip is free to pick mismatched nightlies.

Observed in

Run 32495102132:

job result
wheel-tests-cuopt / 12.2.2, 3.11, arm64, ubuntu22.04, a100, latest-deps fail
wheel-tests-cuopt-server / 12.9.2, 3.14, amd64, ubuntu24.04, h100, latest-deps fail
wheel-tests-cuopt / 12.9.2, 3.11, amd64, l4, oldest-deps pass
wheel-tests-cuopt / 12.9.2, 3.14, amd64, h100, latest-deps pass

Only latest-deps jobs are affected, which is consistent with nightly drift: oldest-deps resolves to an older, self-consistent pair.

Failure mode is a collection error, so it takes out the whole module -- one of the runs reported 0 passed, 1 failed, 20 errors.

Not cuOpt code

The failure happens while importing pylibcudf, before cuOpt is exercised. It is unrelated to whatever a given PR changes; it surfaced on an unrelated routing fix.

Suggested next steps

  • Confirm whether this is transient nightly skew or needs a constraint pinning libcudf/pylibcudf to the same nightly build
  • If the former, consider whether latest-deps jobs should pin matched RAPIDS nightly builds rather than ==26.10.* independently
Lenguaje dominante
Cuda
Estrellas
1.1k
Forks
255
Merge medio
1 d 22 h
PR fusionados (30 d)
102

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Más de NVIDIA/cuopt

Todos los issues de NVIDIA/cuopt

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.