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MPI_Comm_create_from_group works incorrectly when used with non-overlapping groups but same stringtag argument

17

Turns out the way MPI_Comm_create_from_group is using the PMIx_Group_construct method doesn't correctly handle the case where multiple MPI processes are invoking MPI_Comm_create_group using different, non-overlapping MPI groups, but the same...

hppritcha

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash,...

bosilca

Default mpirun behavior for Java apps incorrect if PRTE libdir != OMPI libdir

1

See https://github.com/openpmix/prrte/issues/1335 for details. Filing this here just to track it on the OMPI side. This is a regression compared to v4.x (because ORTE handled this in v4.x, but now...

jsquyres

ROMIO fails to build if level_zero is installed

6

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash,...

acgoldma

Segfault at thread exit with latest main branch

4

## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash, etc.) Main branch commit 4265e248c ### Describe how Open MPI...

SeyedMir

Warnings in master branch: src area

3

Building CentOS with gcc 8.5.0 compiler: ```c src/mem/mpl_trmem.c:164:13: warning: function declaration isn’t a prototype [-Wstrict-prototypes] static void init_classes() ^~~~~~~~~~~~ In file included from ./include/mpl.h:21, from src/mem/mpl_trmem.c:15: src/mem/mpl_trmem.c: In function ‘MPL_trvalid2’:...

rhc54

[Open MPI main branch] mpirun/mpicc error while loading shared libraries

15

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash,...

shijin-aws

SMSC/knem throws error messages referencing BTL/knem

3

I tried to build OpenMPI v5 with knem, but it fails at runtime throwing errors about btl_sm_single_copy_mechanism. While in reality the error is in smsc component and setting `OMPI_MCA_coll_smsc=^knem` disables...

BKitor

What to do with OMPI_MPI_THREAD_LEVEL env variable?

8

This is an opening to a discussion about the `OMPI_MPI_THREAD_LEVEL` environment variable. There's a few issues here: 1. This env variable was added a long time ago to `MPI_Init()` as...

jsquyres

Crash in with Open MPI v4.1.x in MPI_Win_lock_all when used with libfabric < 1.12

32

## Background information We were using OpenMPI 4.0.5 with libfabric 1.11.0 for MPI one-sided communication. When upgrading to OpenMPI 4.1 MPI_Win_lock_all crashes. Using libfabric 1.12.x works. However as OMPI 4.0...

Flamefire