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[rabit] Drop support for MPI backend. #9525

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merged 4 commits into from
Aug 28, 2023
Merged

[rabit] Drop support for MPI backend. #9525

merged 4 commits into from
Aug 28, 2023

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trivialfis
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@trivialfis trivialfis commented Aug 26, 2023 •
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Motivation

  • We have no test for the MPI backend.
  • Nowadays, people use distributed frameworks for machine learning, they usually have their own communication channels.
  • Even if the MPI support is desirable, the C++ interface of MPI is deprecated and we have to rewrite the implementation anyway.

changes

  • add checks in cmake
  • Remove mpi related code.

@trivialfis trivialfis mentioned this pull request Aug 21, 2023
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cc @hcho3 @RAMitchell

@trivialfis trivialfis merged commit 90ef250 into dmlc:master Aug 28, 2023
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@trivialfis trivialfis deleted the rabit-drop-mpi branch August 28, 2023 13:01
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@RAMitchell RAMitchell RAMitchell approved these changes

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