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Subject: Re: [OMPI users] deadlock on intercommunicator after MPI_Comm_spawn_multiple (OS X / Linux)
From: Valentin Clement (valentin.clement_at_[hidden])
Date: 2012-12-04 20:16:30


Hi,

It seems, the problem is happening if I have two active interfaces on my computer. Is there any configuration to use MPI_Comm_spawn_multiple on a machine with multiple interfaces ?

Regards,

Valentin

On Dec 3, 2012, at 3:00 PM, Valentin Clement <valentin.clement_at_[hidden]> wrote:

> Hi,
>
> I'm using call to MPI_Comm_spawn_multiple in a quite big application. I've seen a deadlock occurred in a very strange situation. If I'm running my application on my Ubuntu 12.10 with OpenMPI 1.6.3 there is absolutely no problem.
>
> On my Mac OS X 10.8.2 with also OpenMPI 1.6.3, I'm experiencing a dead lock on an intrecommunicator resulting from the MPI_Comm_spawn_multiple only if my ethernet interface is enable. If I disable it, the deadlock is gone.
>
> Anyone has an idea of what is happening ? I joined the output of ompi_info on both OS X and Linux.
>
> Regards,
>
> Valentin
>
>
> -----------------------------------------------------------------------------------------
> Valentin Clement - Student trainee at RIKEN AICS
> Programming Environment Research Team
> valentin.clement_at_[hidden]
> valentin.clement_at_[hidden]
> Master thesis project
> POP-C++ on the K Computer
> Project homepage: https://forge.tic.eia-fr.ch/projects/poponk
> Project board: https://forge.tic.eia-fr.ch/projects/poponk/wiki/Wiki
> -----------------------------------------------------------------------------------------
> <ompi_info.tar.bz2>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

On Dec 3, 2012, at 3:00 PM, Valentin Clement <valentin.clement_at_[hidden]> wrote:

> Hi,
>
> I'm using call to MPI_Comm_spawn_multiple in a quite big application. I've seen a deadlock occurred in a very strange situation. If I'm running my application on my Ubuntu 12.10 with OpenMPI 1.6.3 there is absolutely no problem.
>
> On my Mac OS X 10.8.2 with also OpenMPI 1.6.3, I'm experiencing a dead lock on an intrecommunicator resulting from the MPI_Comm_spawn_multiple only if my ethernet interface is enable. If I disable it, the deadlock is gone.
>
> Anyone has an idea of what is happening ? I joined the output of ompi_info on both OS X and Linux.
>
> Regards,
>
> Valentin
>
>
> -----------------------------------------------------------------------------------------
> Valentin Clement - Student trainee at RIKEN AICS
> Programming Environment Research Team
> valentin.clement_at_[hidden]
> valentin.clement_at_[hidden]
> Master thesis project
> POP-C++ on the K Computer
> Project homepage: https://forge.tic.eia-fr.ch/projects/poponk
> Project board: https://forge.tic.eia-fr.ch/projects/poponk/wiki/Wiki
> -----------------------------------------------------------------------------------------
> <ompi_info.tar.bz2>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users

-----------------------------------------------------------------------------------------
Valentin Clement - Student trainee at RIKEN AICS
Programming Environment Research Team
valentin.clement_at_[hidden]
valentin.clement_at_[hidden]
Master thesis project
POP-C++ on the K Computer
Project homepage: https://forge.tic.eia-fr.ch/projects/poponk
Project board: https://forge.tic.eia-fr.ch/projects/poponk/wiki/Wiki
-----------------------------------------------------------------------------------------




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