[OMPI users] Hang in mpi on 32-bit

[Orion Poplawski]

Hello -

We are starting to see some mpi processes "hang" (really cpu spin and
never complete) on 32 bit architectures on Fedora during package tests.
Some examples:

hpl 2.2 and openmpi 2.1.5 on i686 and arm:

https://koji.fedoraproject.org/koji/taskinfo?taskID=31129461

hdf5 1.8.20 and openmpi 3.1.3 on i686 with the "t_cache" test.

https://copr-be.cloud.fedoraproject.org/results/@scitech/openmpi3.1/fedora-28-i386/00830432-hdf5/builder-live.log

I'm at a loss as to how to debug this further.

[Nathan Hjelm via users]

Can you try configuring with —disable-builtin-atomics and see if that fixes the issue for you?

-Nathan

Post by Orion Poplawski
Hello -
https://koji.fedoraproject.org/koji/taskinfo?taskID=31129461
hdf5 1.8.20 and openmpi 3.1.3 on i686 with the "t_cache" test.
I'm at a loss as to how to debug this further.
--
Orion Poplawski
Manager of NWRA Technical Systems 720-772-5637
NWRA, Boulder/CoRA Office FAX: [phone]
Boulder, CO 80301 https://www.nwra.com/
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[Orion Poplawski]

It does not appear to have any effect, at least not with 2.1.5.

Thanks.

Post by Nathan Hjelm via users
Can you try configuring with —disable-builtin-atomics and see if that fixes the issue for you?
-Nathan

Post by Orion Poplawski
Hello -
https://koji.fedoraproject.org/koji/taskinfo?taskID=31129461
hdf5 1.8.20 and openmpi 3.1.3 on i686 with the "t_cache" test.
I'm at a loss as to how to debug this further.
--
Orion Poplawski
Manager of NWRA Technical Systems 720-772-5637
NWRA, Boulder/CoRA Office FAX: [phone]
Boulder, CO 80301 https://www.nwra.com/
_______________________________________________
users mailing list
https://lists.open-mpi.org/mailman/listinfo/users

_______________________________________________
users mailing list
https://lists.open-mpi.org/mailman/listinfo/users