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Exclude ucx=1.22.0 from supported versions. - #784

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TomAugspurger:exclude-ucx-1.22
Oct 20, 2026
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rapids-bot[bot] merged 2 commits into
rapidsai:mainfrom
TomAugspurger:exclude-ucx-1.22

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@TomAugspurger

@TomAugspurger TomAugspurger commented Oct 20, 2026 •

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This adjusts our UCX pinning to exclude ucx==1.22.0. That release includes an issue that occasionally causes a segfault in some rapidsmpf and cudf tests. The issue is fixed in ucx main by openucx/ucx#11922.

Closes #783

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This temporarily pins our UCX upper bound to <1.22, partly
reverting rapidsai#778. We're working
around / avoiding a segmentation fault in libcudf-streaming tests that
appears to be caused by code added in UCX 1.22. See
rapidsai#783 for more.
@TomAugspurger TomAugspurger added bug Something isn't working non-breaking Introduces a non-breaking change labels Oct 20, 2026
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/ok to test 3bdaf4f

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/ok to test 0695001

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TomAugspurger marked this pull request as ready for review October 20, 2026 19:37
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TomAugspurger requested a review from a team as a code owner October 20, 2026 19:37
@TomAugspurger TomAugspurger changed the title Temporarily exclude ucx=1.22 Exclude ucx=1.22.0 from supported versoins. Oct 20, 2026
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/merge

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Flaky segmentation fault in cudf libcudf_streaming_ucxx_tests tests

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