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openmpi 5.0.5 + lsf: The affinity file provided in LSB_AFFINITY_HOSTFILE could not be converted to a rankfile

Status: Open.

#13570 In open-mpi/ompi;

· puneet336 opened on Dec 15, 2025

Long file paths causing segfault

Target: v5.0.x

Status: Open.

Bug

#13565 In open-mpi/ompi;

· josintom-csi opened on Dec 11, 2025

·  

v5.0.10

quad precision (128 bit) reductions return bad results

question

Target: v5.0.x

Status: Open.

#13564 In open-mpi/ompi;

· pj-gdit opened on Dec 11, 2025

·  

v5.0.10

<code>MPI_Abi_get_fortran_booleans</code> always returns <code>MPI_INFO_NULL</code>

question

Target: v6.0.x

Status: Open.

#13563 In open-mpi/ompi;

· eschnett opened on Dec 11, 2025

mpi4py: osc/ucx dynamic window heap-buffer-overflow

bug

Target: main

Status: Open.

Bug

#13561 In open-mpi/ompi;

· devreal opened on Dec 9, 2025

mpi4py: pm/ucx improbe use-after-free

Target: main

Status: Open.

Bug

#13560 In open-mpi/ompi;

· devreal opened on Dec 9, 2025

Why does UCC consistently insist on using software to simulate PUT/GET operations?

question

Target: v5.0.x

Status: Open.

#13544 In open-mpi/ompi;

· TroyMitchell911 opened on Dec 2, 2025

Feature: Provide network hardware counter summary at completion time

Status: Open.

Feature

#13525 In open-mpi/ompi;

· sadlochr opened on Nov 20, 2025

<code>srun</code> with OpenMPI 5.0.3 unexpectedly launches MPI jobs as singletons without ERROR

Status: Open.

Feature

#13523 In open-mpi/ompi;

· GayatriManda opened on Nov 19, 2025

·  

Future

Segfault in MPI_Init

State-Awaiting user information

Status: Open.

#13520 In open-mpi/ompi;

· noproblemwiththat opened on Nov 16, 2025

v6.0.0 checklist

Status: Open.

#13485 In open-mpi/ompi;

· hppritcha opened on Oct 29, 2025

ASAN: use-after-free in mpi4py's TestP2PMatchedWorld.testIMProbe

State-Awaiting user information

Status: Open.

#13484 In open-mpi/ompi;

· devreal opened on Oct 29, 2025