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Subject: Re: [OMPI users] /dev/shm
From: John Hearns (hearnsj_at_[hidden])
Date: 2008-11-19 10:13:48


2008/11/19 Ray Muno <muno_at_[hidden]>

> Thought I would revisit this one.
>
> We are still having issues with this. It is not clear to me what is leaving
> the user files behind in /dev/shm.
>
> This is not something users are doing directly, they are just compiling
> their code directly with mpif90 (from OpenMPI), using various compilers.
> Compilers in use are PGI, Intel, SunStudio and Pathscale.
>
> It looks like every job run leaves something behind in /dev/shm and it
> slowly fills up. We are just clearing these out at this point.
>

Could you not run ipcs with the -p flag every few minutes and try to figure
out what the processes are which are leaving these?
(by that I mean catch them when they are live, and the creating process is
still on the system)

(Currently sitting in a training course on Performance Evaluation and Tuning
at SGI - so thinking on things like this)