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Use conda CUDA host compiler for RMM nightly build#12212

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trivialfis merged 1 commit into
dmlc:masterfrom
bdice:fix-rmm-cuda-host-compiler
May 14, 2026
Merged

Use conda CUDA host compiler for RMM nightly build#12212
trivialfis merged 1 commit into
dmlc:masterfrom
bdice:fix-rmm-cuda-host-compiler

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@bdice bdice commented May 13, 2026

Summary

  • Set CUDAHOSTCXX to the activated conda C++ compiler for the nightly RMM build.
  • Avoid using the CUDA host compiler baked into the CUDA 13 CI image after installing a newer conda toolchain.

Closes #12213

Testing

  • Built the matching xgb-ci.gpu_build_cuda13_rockylinux8:main image locally from dmlc/xgboost-devops.
  • Reproduced the RMM 26.06 failure with the unmodified script.
  • Verified BUILD_ONLY_SM75=1 python3 ops/docker_run.py --image-uri 492475357299.dkr.ecr.us-west-2.amazonaws.com/xgb-ci.gpu_build_cuda13_rockylinux8:main --run-args='-e BUILD_ONLY_SM75' -- ops/pipeline/nightly-test-rmm-impl.sh 26.06 passes with this change.

@bdice bdice force-pushed the fix-rmm-cuda-host-compiler branch from aa2abcf to 6edc6fd Compare May 13, 2026 21:03
@trivialfis trivialfis merged commit 7797a6b into dmlc:master May 14, 2026
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Nightly RMM build uses stale CUDA host compiler

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