The first release candidate for Open MPI 4.1.2 has been posted at
https://www.open-mpi.org/software/ompi/v4.1/. Barring any major issues, we
anticipate a short release candidate period before an official 4.1.2 release.
Major changes from 4.1.1 include:
- Fix oshmem_shmem_finalize() when main() returns non-zero value.
- Fix wrong affinity under LSF with the membind option.
- Fix count==0 cases in MPI_REDUCE and MPI_IREDUCE.
- Fix ssh launching on Bourne-flavored shells when the user has "set
-u" set in their shell startup files.
- Correctly process 0 slots with the mpirun --host option.
- Ensure to unlink and rebind socket when the Open MPI session
directory already exists.
- Fix a segv in mpirun --disable-dissable-map.
- Fix a potential hang in the memory hook handling.
- Slight performance improvement in MPI_WAITALL when running in
MPI_THREAD_MULTIPLE.
- Fix hcoll datatype mapping.
- Correct some operations modifying MPI_Status.MPI_ERROR when it is
disallowed by the MPI standard.
- UCX updates:
- Fix datatype reference count issues.
- Detach dynamic window memory when freeing a window.
- Fix memory leak in datatype handling.
- Fix various atomic operations issues.
- mpirun: try to set the curses winsize to the pty of the spawned
task. Thanks to Stack Overflow user @Seriously for reporting the
issue.
- PMIx updates:
- Fix compatibility with external PMIx v4.x installations.
- Fix handling of PMIx v3.x compiler/linker flags. Thanks to Erik
Schnetter for reporting the issue.
- Skip SLURM-provided PMIx detection when appropriate. Thanks to
Alexander Grund for reporting the issue.
- Fix handling by C++ compilers when they #include the STL "<version>"
header file, which ends up including Open MPI's text VERSION file
(which is not C code). Thanks to @srpgilles for reporting the
issue.
- Fix MPI_Op support for MPI_LONG.
- Make the MPI C++ bindings library (libmpi_cxx) explicitly depend on
the OPAL internal library (libopen-pal). Thanks to Ye Luo for
reporting the issue.
- Fix configure handling of "--with-libevent=/usr".
- Fix memory leak when opening Lustre files. Thanks to Bert Wesarg
for submitting the fix.
- Fix MPI_SENDRECV_REPLACE to correctly process datatype errors.
Thanks to Lisandro Dalcin for reporting the issue.
- Fix MPI_SENDRECV_REPLACE to correctly handle large data. Thanks
Jakub Benda for reporting this issue and suggesting a fix.
- Add workaround for TCP "dropped connection" errors to drastically
reduce the possibility of this happening.
- OMPIO updates:
- Fix handling when AMODE is not set. Thanks to Rainer Keller for
reporting the issue and supplying the fix.
- Fix FBTL "posix" component linking issue. Thanks for Honggang Li
for reporting the issue.
- Fixed segv with MPI_FILE_GET_BYTE_OFFSET on 0-sized file view.
- Thanks to GitHub user @shanedsnyder for submitting the issue.
- OFI updates:
- Add support for Libfabric memhooks monitoring.
- Ensure that Cisco usNIC devices are never selected by the OFI
MTL.
- Fix buffer overflow in OFI networking setup. Thanks to Alexander
Grund for reporting the issue and supplying the fix.
- Fix SSEND on tag matching networks.
- Fix error handling in several MPI collectives.
- Fix the ordering of MPI_COMM_SPLIT_TYPE. Thanks to Wolfgang
Bangerth for raising the issue.
- No longer install the orted-mpir library (it's an internal / Libtool
convenience library). Thanks to Andrew Hesford for the fix.
- PSM2 updates:
- Allow advanced users to disable PSM2 version checking.
- Fix to allow non-default installation locations of psm2.h.
