Search results

PML/UCX: simple mpi test hangs if using UCX PML in singleton mode

Status: Open.

#13626 In open-mpi/ompi;

· hppritcha opened on Jan 8, 2026

mpi4py testRevoke fails with pml/ucx

Status: Open.

#13623 In open-mpi/ompi;

· devreal opened on Jan 7, 2026

Overflow in memheap_base_mkey.c mca_memheap_modex_recv_all

Status: Open.

#13621 In open-mpi/ompi;

· rdfriese opened on Jan 6, 2026

sys.c:1369 UCX ERROR pthread_getaffinity_mp() failed Invalid argument

Status: Open.

#13602 In open-mpi/ompi;

· hpcpony opened on Dec 30, 2025

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

v6.0.0 checklist

Status: Open.

#13485 In open-mpi/ompi;

· hppritcha opened on Oct 29, 2025