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Subject: Re: [OMPI devel] RFC: Proposed Fix for mmap Bus Error Due to an Inadequate Amount of Disk Space
From: Gutierrez, Samuel K (samuel_at_[hidden])
Date: 2012-10-09 16:48:52


Committed revision 27433.

Sam

On Oct 6, 2012, at 4:32 AM, Jeff Squyres wrote:

> 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]
> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
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