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replace MLX_IBV_COORDINATOR with MLX_JACCL_COORDINATOR - #2986

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awni merged 1 commit into
ml-explore:mainfrom
Evanev7:ibv-to-jaccl
Jan 13, 2026
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replace MLX_IBV_COORDINATOR with MLX_JACCL_COORDINATOR#2986
awni merged 1 commit into
ml-explore:mainfrom
Evanev7:ibv-to-jaccl

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@Evanev7

@Evanev7 Evanev7 commented Jan 12, 2026

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Proposed changes

Expect MLX_JACCL_DEVICES instead of MLX_IBV_DEVICES in the JACCL distributed backend, consistent with the JACCL coordinator env var.

Please close if this was intended - but I couldn't find any discussion explicitly intending this behaviour.

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  • I have read the CONTRIBUTING document
  • I have run pre-commit run --all-files to format my code / installed pre-commit prior to committing changes
  • (N/A) I have added tests that prove my fix is effective or that my feature works
  • I have updated the necessary documentation (if needed)

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LGTM!

@awni
awni merged commit a819779 into ml-explore:main Jan 13, 2026
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@angeloskath

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Sorry for not being able to get to this sooner but that was intentional as the devices are infiniband verbs devices. Moreover this PR breaks the launcher currently.

I will make a PR to revert it but if people prefer this for some reason the I will adapt the PR to fix the launcher.

@angeloskath

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Well what I meant is breaks old launchers. Not the launcher on main.

@Evanev7

Evanev7 commented Jan 14, 2026

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ah my bad! I think IBV devices makes sense in that case.

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3 participants