Nothing beyond the normal. openmpi 5.0 was just released so we're
probably a bit out in front (although there have been RCs for almost a
year).
On 10/30/23 08:01, Morgan Hough wrote:
Hi Orion,
Is there any particular testing you would like to see done with this?
Are there projects that are using 5.0 at this point? Thanks so much
for your time.
Cheers,
-Morgan
On Mon, Oct 30, 2023 at 6:49 AM Orion Poplawski <orion(a)nwra.com> wrote:
>
> 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
> 3380 Mitchell Lane orion(a)nwra.com
> Boulder, CO 80301
https://www.nwra.com/
>
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--
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
3380 Mitchell Lane orion(a)nwra.com
Boulder, CO 80301