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Subject: Re: [OMPI devel] 1.5.5rc1 tested: REGRESSION on FreeBSD
From: Paul H. Hargrove (PHHargrove_at_[hidden])
Date: 2011-12-14 02:01:24


On 12/13/2011 10:53 PM, Brice Goglin wrote:
> Le 14/12/2011 07:17, Paul H. Hargrove a écrit :
>> My OpenBSD and NetBSD testers have the same behavior, but now I see
>> that I was at warned...
>>
>> On all the affected systems I found the following (modulo the system
>> tuple) in the configure output:
>>> checking which OS support to include... Unsupported!
>>> (x86_64-unknown-openbsd5.0)
>>> configure: WARNING:
>>> ***********************************************************
>>> configure: WARNING: *** hwloc does not support this system.
>>> configure: WARNING: *** hwloc will *attempt* to build (but it may not
>>> work).
>>> configure: WARNING: *** hwloc run-time results may be reduced to
>>> showing just one processor.
>>> configure: WARNING: *** You have been warned.
>>> configure: WARNING: *** Pausing to give you time to read this message...
>>> configure: WARNING:
>>> ***********************************************************
>> Clearly my failures are "known" to somebody.
>>
>> However, I have multiple "issues" with the current behavior.
>> 1) At an minimum the WARNING mention --without-hwloc
>> 2) Is this "build and pray" approach to unknown platforms really wise?
>> 3) Shouldn't something appear in the README about this? The
>> --without-hwloc option doesn't even appear in README.
> Maybe the wording is a bit too strong, but you can ignore this. What
> happens in the vast majority of cases like this is that hwloc will only
> know how many processors the system has, and hwloc won't be able to bind
> tasks to processors. But that's still not worse than disabling hwloc.
>
> Brice
>
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/devel

I cannot even *build* OpenMPI on {Free,Open,Net}BSD systems unless I
configure with --without-hwloc.
Thus I cannot agree w/ Brice's suggestion that I ignore this warning.

-Paul

-- 
Paul H. Hargrove                          PHHargrove_at_[hidden]
Future Technologies Group
HPC Research Department                   Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900