On 10/28/23 13:36, Orion Poplawski wrote:
I'm going to start building openmpi 5.0.0 and its requirements
(pmix
4.2.7, prrte 3.0.2) and dependencies in a side-tag starting tomorrow.
Notable changes are:
* Dropping support for 32-bit
* Dropping support for C++ API
* Change in the environment variable to allow oversubscription (running
with more processes than available cores)
I will be making changes to dependent packages to address these changes.
I've been rebuilding deps in COPR
(
https://copr.fedorainfracloud.org/coprs/orion/pmix-4.2/builds/) and
most rebuild fine. One exception is MUSIC which depends on the C++ API.
There is a longstanding upstream issue to address this. Hopefully
this will finally get dealt with.
There are no soname bumps, but pmix has proved problematic in the past
but its deps will be rebuilt.
The side tag has been merged. I rebuilt all packages that depended on
libmpi_cxx.so - except MUSIC which needs upstream to drop it's
requirement on the C++ API.
Other OpenMPI deps may now be FTBFS/FTI due to the lack of openmpi on
i686 but packagers can deal with that on their own schedule. koschei
will not detect this but perhaps the FTI check will.
Finally, the new method for allowing over-subscription is:
PRTE_MCA_rmaps_default_mapping_policy=:oversubscribe
Orion
--
Orion Poplawski
he/him/his - surely the least important thing about me
IT Systems Manager 720-772-5637
NWRA, Boulder/CoRA Office FAX: 303-415-9702
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