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@raffenet raffenet commented Aug 18, 2025

Pull Request Description

Splitting non-GPU commits from #6795 for testing.

Author Checklist

  • Provide Description
    Particularly focus on why, not what. Reference background, issues, test failures, xfail entries, etc.
  • Commits Follow Good Practice
    Commits are self-contained and do not do two things at once.
    Commit message is of the form: module: short description
    Commit message explains what's in the commit.
  • Passes All Tests
    Whitespace checker. Warnings test. Additional tests via comments.
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test:mpich/ch4/ucx
test:mpich/ch4/ucx/gpu

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test:mpich/ch4/gpu/ucx

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Looks to be a bug in the setting of the received size of noncontig am recv, so dropped that part for now.
test:mpich/ch4/ucx
test:mpich/ch4/gpu/ucx

@raffenet raffenet force-pushed the ucx-am-dt branch 3 times, most recently from 092506d to 8899fa9 Compare August 18, 2025 20:47
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test:mpich/ch4/ucx
test:mpich/ch4/gpu/ucx

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whitespace checker has me in a blender 😦
test:mpich/ch4/ucx
test:mpich/ch4/gpu/ucx

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test:mpich/ch4/ucx
test:mpich/ch4/gpu/ucx

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test:mpich/ch4/gpu/ucx
EXTRA_CONFIG:--with-ucx=embedded

Since we already have the request, we can always put it in the user_data
parameter and avoid some complexity.
UCX has support for noncontig datatypes in the nbx active message send
interface. Use it like we do in the tagged path.
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test:mpich/ch4/gpu/ucx
EXTRA_CONFIG:--with-ucx=embedded

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