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<code>--enable-mca-dso</code> broken on main (and likely v6.0.x)

Severity: blocker

Target: v6.0.x

Status: Open.

#13717 In open-mpi/ompi;

· bwbarrett opened on Feb 4, 2026

accelerator_cuda_check_addr expensive in CUDA-aware MPI

Status: Open.

#13708 In open-mpi/ompi;

· NamjaeChoi opened on Feb 2, 2026

liboshmem occasionally fails with "memheap_base_segment_setup() Failed to setup base segment address"

Status: Open.

#13698 In open-mpi/ompi;

· C-Newman opened on Jan 28, 2026

UCX_IB_MLX5_DEVX mystery

Status: Open.

#13688 In open-mpi/ompi;

· ashterenli opened on Jan 26, 2026

hdf5 mpi tests fail/hang

Status: Open.

#13680 In open-mpi/ompi;

· ashterenli opened on Jan 22, 2026

Stack-use-after-return in ompi_info

Status: Open.

#13662 In open-mpi/ompi;

· devreal opened on Jan 17, 2026

Leaks reported by LSAN on mpi4py tests

Status: Open.

#13661 In open-mpi/ompi;

· devreal opened on Jan 16, 2026

Make better configury check for all the python modules required for Sphinx

Target: main

Target: v6.0.x

Status: Open.

#13648 In open-mpi/ompi;

· rhc54 opened on Jan 14, 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

<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