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romio test fails to build in Fedora package

Status: Open.

#7817 In pmodels/mpich;

· opoplawski opened on May 25, 2026

MPICH 5.0.0 and 5.0.1 MPI_Comm_split_type(MPI_COMM_TYPE_SHARED) returns singleton communicators for processes on the same node

Status: Open.

#7814 In pmodels/mpich;

· iole-bolognesi opened on May 22, 2026

Init: crashes in hwtopo on SNC systems with HWLOC_OBJ_DIE

Status: Open.

#7813 In pmodels/mpich;

· brinkcoder opened on May 22, 2026

MPI_Comm_connect/accept for singleton init processes broken in MPICH v5.0.1

Status: Open.

#7805 In pmodels/mpich;

· eellis-mw opened on May 12, 2026

Getting GPU IPC to work with HIP/ROCm

Status: Open.

#7779 In pmodels/mpich;

· mszpindler opened on Apr 21, 2026

RC tarballs and shared library versioning

Status: Open.

#7765 In pmodels/mpich;

· dalcinl opened on Apr 8, 2026

Failure in finalize

Status: Open.

#7760 In pmodels/mpich;

· wgropp opened on Apr 6, 2026

abi: MPICH does not provide the Fortran ABI library and compile wrapper

Status: Open.

#7759 In pmodels/mpich;

· raffenet opened on Apr 1, 2026

Single MPI all_reduce 50x slower than oneccl

aurora

Status: Open.

#7752 In pmodels/mpich;

· TApplencourt opened on Mar 20, 2026

hydra from mpich 5.0.0 does not fall back to PMI 1.1

Status: Open.

#7751 In pmodels/mpich;

· garlick opened on Mar 19, 2026

ULFM on Polaris with CUDA at 128 nodes

Status: Open.

#7744 In pmodels/mpich;

· alvin-zyl opened on Mar 9, 2026

Poor shared memory performance with small message sizes on Frontier

Status: Open.

#7723 In pmodels/mpich;

· AcerP-py opened on Feb 11, 2026