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- From: "Snuverink Jochem (PSI)" <jochem.snuverink AT psi.ch>
- To: opal <opal AT lists.psi.ch>, "philippe.piot AT gmail.com" <philippe.piot AT gmail.com>
- Subject: Re: [Opal] optimizer sometime gets stuck
- Date: Thu, 27 May 2021 12:30:50 +0000
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Dear Philippe
Unfortunately this seems to happen sometimes. There is an open issue about it:
https://gitlab.psi.ch/OPAL/src/-/issues/557
Can you perhaps post the opt/pilot.trace.0 ?
My impression was when I investigated this is that the MPI communication between the nodes is not always successful, and then the optimisation gets stuck. My preliminary conclusion is that I think the MPI communication between the nodes in OPAL needs to be made more robust, and there is not much to apart from resubmitting. I might try to work on that in the upcoming developer week. What could help is to run on a single machine with several cores instead of on several machines (if you did so).
Hope that helps,
Jochem
Sent: Thursday, May 27, 2021 1:52:02 PM
To: opal
Subject: [Opal] optimizer sometime gets stuck
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Initialization complete.
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Initialization complete.
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Initialization complete.
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Initialization complete.
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[Opal] optimizer sometime gets stuck,
Philippe Piot, 05/27/2021
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Re: [Opal] optimizer sometime gets stuck,
Adelmann Andreas (PSI), 05/27/2021
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Message not available
- Re: [Opal] optimizer sometime gets stuck, Philippe Piot, 05/27/2021
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Message not available
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Message not available
- [Opal] Fwd: optimizer sometime gets stuck | output part I, Philippe Piot, 05/27/2021
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Re: [Opal] optimizer sometime gets stuck,
Adelmann Andreas (PSI), 05/27/2021
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Message not available
- [Opal] Fwd: optimizer sometime gets stuck | output part II, Philippe Piot, 05/27/2021
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Message not available
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Re: [Opal] optimizer sometime gets stuck,
Adelmann Andreas (PSI), 05/27/2021
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Re: [Opal] optimizer sometime gets stuck,
Philippe Piot, 05/27/2021
- Re: [Opal] optimizer sometime gets stuck, Adelmann Andreas (PSI), 05/27/2021
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Re: [Opal] optimizer sometime gets stuck,
Philippe Piot, 05/27/2021
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Re: [Opal] optimizer sometime gets stuck,
Adelmann Andreas (PSI), 05/27/2021
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