- Update to version 4.1.1
- Fix a number of datatype issues, including an issue with
improper handling of partial datatypes that could lead to
an unexpected application failure.
- Change UCX PML to not warn about MPI_Request leaks during
MPI_FINALIZE by default. The old behavior can be restored with
the mca_pml_ucx_request_leak_check MCA parameter.
- Reverted temporary solution that worked around launch issues in
SLURM v20.11.{0,1,2}. SchedMD encourages users to avoid these
versions and to upgrade to v20.11.3 or newer.
- Updated PMIx to v3.2.2.
- Disabled gcc built-in atomics by default on aarch64 platforms.
- Disabled UCX PML when UCX v1.8.0 is detected. UCX version 1.8.0 has a bug that
may cause data corruption when its TCP transport is used in conjunction with
the shared memory transport. UCX versions prior to v1.8.0 are not affected by
this issue. Thanks to @ksiazekm for reporting the issue.
- Fixed detection of available UCX transports/devices to better inform PML
prioritization.
- Fixed SLURM support to mark ORTE daemons as non-MPI tasks.
- Improved AVX detection to more accurately detect supported
platforms. Also improved the generated AVX code, and switched to
using word-based MCA params for the op/avx component (vs. numeric
big flags).
- Improved OFI compatibility support and fixed memory leaks in error
handling paths.
- Improved HAN collectives with support for Barrier and Scatter. Thanks
to @EmmanuelBRELLE for these changes and the relevant bug fixes.
- Fixed MPI debugger support (i.e., the MPIR_Breakpoint() symbol).
Thanks to @louisespellacy-arm for reporting the issue.
- Fixed ORTE bug that prevented debuggers from reading MPIR_Proctable.
OBS-URL: https://build.opensuse.org/request/show/889006
OBS-URL: https://build.opensuse.org/package/show/science:HPC/openmpi4?expand=0&rev=15
- Update to version 4.1.0
* collectives: Add HAN and ADAPT adaptive collectives components.
Both components are off by default and can be enabled by specifying
"mpirun --mca coll_adapt_priority 100 --mca coll_han_priority 100 ...".
We intend to enable both by default in Open MPI 5.0.
* OMPIO is now the default for MPI-IO on all filesystems, including
Lustre (prior to this, ROMIO was the default for Lustre). Many
thanks to Mark Dixon for identifying MPI I/O issues and providing
access to Lustre systems for testing.
* Minor MPI one-sided RDMA performance improvements.
* Fix hcoll MPI_SCATTERV with MPI_IN_PLACE.
* Add AVX support for MPI collectives.
* Updates to mpirun(1) about "slots" and PE=x values.
* Fix buffer allocation for large environment variables. Thanks to
@zrss for reporting the issue.
* Upgrade the embedded OpenPMIx to v3.2.2.
* Fix issue with extra-long values in MCA files. Thanks to GitHub
user @zrss for bringing the issue to our attention.
* UCX: Fix zero-sized datatype transfers.
* Fix --cpu-list for non-uniform modes.
* Fix issue in PMIx callback caused by missing memory barrier on Arm platforms.
* OFI MTL: Various bug fixes.
* Fixed issue where MPI_TYPE_CREATE_RESIZED would create a datatype
with unexpected extent on oddly-aligned datatypes.
* collectives: Adjust default tuning thresholds for many collective
algorithms
* runtime: fix situation where rank-by argument does not work
* Portals4: Clean up error handling corner cases
* runtime: Remove --enable-install-libpmix option, which has not
worked since it was added
OBS-URL: https://build.opensuse.org/request/show/882166
OBS-URL: https://build.opensuse.org/package/show/science:HPC/openmpi4?expand=0&rev=12
