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ch4/ofi: MPICH hangs when VPN interface is selected by libfabric provider

Status: Open.

#7863 In pmodels/mpich;

· raffenet opened on Jul 1, 2026

MPI_Session fail when running concurently with a MPI program

aurora

Status: Open.

#7852 In pmodels/mpich;

· TApplencourt opened on Jun 24, 2026

Possibly unbounded memory growth in GPU-aware MPI code on Aurora

aurora

Status: Open.

#7849 In pmodels/mpich;

· colleeneb opened on Jun 23, 2026

MPI ABI fix for test/mpi/f77/pt2pt/bsendf.f

Status: Open.

#7846 In pmodels/mpich;

· jeffhammond opened on Jun 19, 2026

MPI Forum ABI wrapper for MPI_Type_create_f90_integer returns success with MPI_DATATYPE_NULL

Status: Open.

#7833 In pmodels/mpich;

· jsquyres opened on Jun 10, 2026

Possible bug due to failing cudaMemcpyAsync

Status: Open.

#7819 In pmodels/mpich;

· nmnobre opened on May 27, 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

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