sonjahapp

Sessions: integration of PMIx process sets

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## Pull Request Description This PR is a contribution from ParTec AG, Germany. It is originally developed and tested with [ParaStation MPI](https://github.com/ParaStation/psmpi) as part of the European High Performance Computing...

Draft: Session: Do not rely on built-in comms, decouple from world model

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Remark: This PR is based on https://github.com/pmodels/mpich/pull/6578 (Session reference counting). To avoid confusion, https://github.com/pmodels/mpich/pull/6578 should be reviewed and merged first, before we continue with this PR. ## Pull Request Description...

Overwriting key-value pair in KVS does not work

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## Background information ### What version of the PMIx Reference Library are you using? OpenPMIx v5.0.2 PRRTE 3.0.5 ### Describe how PMIx was installed from a git clone ### Please...

Problems with PMIx_Resolve_peers and spawned processes

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## Background information Hello again! I found a few problems with the use of `PMIx_Resolve_peers` and spawned processes for different versions of OpenPMIx. I'm not sure if all these "problems"...