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Subject: Re: [OMPI devel] RFC: Proposed Fix for mmap Bus Error Due to an Inadequate Amount of Disk Space
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-10-06 06:32:46


Two minor suggestions:

1. Ping Shiqing directly to get the proper Windows support before he disappears.

2. Word wrap the show-help message to 76 columns or so.

On Oct 5, 2012, at 6:24 PM, Gutierrez, Samuel K wrote:

> WHAT: Fix the bus error caused by an inadequate amount of space during opal_shmem_segment_create by testing whether or not the target mount has enough space to accommodate the shared-memory backing store. I admit that this isn't an ideal solution, but I can't figure out another way to test this sort of thing given the way ftruncate and mmap behave.
>
> WHY: Provide a nice error message instead of a bus error. See: https://svn.open-mpi.org/trac/ompi/ticket/2827
>
> WHERE:
>
> opal/util/path.[ch]
> opal/mca/shmem/mmap/shmem_mmap_module.c
>
> WHEN: Sometime next week, if everything is okay.
>
> Please test, because the following branch has only been tested on Linux and OS X.
>
> Code can be found:
>
> https://bitbucket.org/samuelkgutierrez/opaldf
>
> Give it a whirl and tell me what you think.
>
> Thanks,
>
> Sam
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/devel

-- 
Jeff Squyres
jsquyres_at_[hidden]
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