[mpich-announce] Announcing the availability of MPICH 3.4.3

Raffenetti, Ken raffenet at anl.gov
Thu Dec 16 12:30:32 CST 2021

A new stable release of MPICH, 3.4.3, is now available for download. This is the third bug-fix release in the 3.4.x series. This release contains improvements and fixes for Hydra, GPU support, ROMIO, datatypes, and other user-reported bugs and build issues.

You can find the release on our downloads page (https://www.mpich.org/downloads/). Production environments are encouraged to upgrade to this release.

The MPICH team

                               Changes in 3.4.3

# Fix bugs in GPFS ROMIO driver

# Fix bugs in DAOS ROMIO driver

# Fix nemesis shm bug on systems with weak memory consistency

# Fix progress issue in ch4:ucx finalize

# Fix nonblocking collective issue during finalize

# Fix UBSan warnings in 32-bit builds

# Fix predefined datatype handle leaks

# Fix bug in topology-aware communicator creation

# Fix Slurm nodelist parsing

# Fix testcase for out-of-tree configuration

# Fix truncation testcase for possible disconnection error

# Hydra help message improvements

# Add support for DAOS pool and container labels

A full list of changes is available at the following link:


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