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Subject: Re: [hwloc-devel] xml file load incompatibilities
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2013-09-20 17:59:58


I can't see any segfault. Where does the segfault occurs for you? In
OMPI only (or lstopo too)? When loading or when using the topology?

I tried lstopo on that file with and without HWLOC_NO_LIBXML_IMPORT=1
(in case the bug is in one of XML backends), looks ok.

Brice

Le 20/09/2013 23:53, Ralph Castain a écrit :
> Here are the two files I tried - not from the same machine. The foo.xml works, the topo.xml segfaults
>
>
>
>
>
> One of our users reported it from their machine, but I don't have their topo file.
>
> On Sep 20, 2013, at 2:41 PM, Brice Goglin <Brice.Goglin_at_[hidden]> wrote:
>
>> Hello,
>> I don't see anything reason for such an incompatibility. But there are
>> many combinations, we can't test everything.
>> I can't reproduce that on my machines. Can you send the XML output of
>> both versions on one of your machines?
>> Brice
>>
>>
>>
>> Le 20/09/2013 23:32, Ralph Castain a écrit :
>>> Hi folks
>>>
>>> I've run across a rather strange behavior. We have two branches in OMPI - the devel trunk (using hwloc v1.7.2) and our feature release series (using hwloc 1.5.2). I have found the following:
>>>
>>> *the feature series can correctly load an xml file generated by lstopo of versions 1.5 or greater
>>>
>>> * the devel series can correctly load an xml file generated by lstopo of versions 1.7 or greater, but not files generated by prior versions. In the latter case, I segfault as soon as I try to use the loaded topology.
>>>
>>> Any ideas why the discrepancy? Can I at least detect the version used to create a file when loading it so I can error out instead of segfaulting?
>>>
>>> Ralph
>>>
>>> _______________________________________________
>>> hwloc-devel mailing list
>>> hwloc-devel_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
>> _______________________________________________
>> hwloc-devel mailing list
>> hwloc-devel_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
>
>
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