[ET Trac] [Einstein Toolkit] #1764: Error with compilation of HWLOC

[Einstein Toolkit]

#1764: Error with compilation of HWLOC
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  Reporter:  maxim.barkov@…         |       Owner:  eschnett           
      Type:  defect                 |      Status:  assigned           
  Priority:  blocker                |   Milestone:  ET_2015_05         
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:  HWLOC              
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Comment (by bmundim):

 Replying to [comment:16 rhaas]:
 > I would rather not have things compile themselves on the workstation
 config files unless absolutely required. Those are likely the first ones
 that new users use and they should be quick to build. MPI does not build
 quickly (or at least it does not feel as if it does).
 >

 I totally agree with you on this!


 > Ubuntu.cfg used to be specific to mpich2 only since it had to hard-code
 the mpi library names. Since some days ago I changed it to use Stave's
 detect.pl which queries mpicc (same as debian.cfg and fedora.cfg already
 do). So now one can use the same ubuntu.cfg file for both MPI variants.

 The question is: does it work with both MPI variants? It didn't for me
 with most recent ubuntu releases and mpich2. I haven't tested it recently
 though. Maybe the MPI package should be added to the header comment too.

 > I think we need hwloc-dev libnuma-dev and libltdl-dev to enable static
 linking. libltdl-dev is missing from the current (Fri May  8 22:26:40 CEST
 2015).

 Ok, it is installed in my system but I missed to list it there. Sorry.

 >libboost1.50-dev should not be added I think since boost is very big and
 not compiled in by the default ET thornlist.

 Yes, but it is a popular library and I know of at least 4 institutions in
 the ET community which use codes that link to Boost. Maybe we could
 rephrase the header comment as follows:

 "Some libraries are very popular in the ET community but are not
 distributed by the toolkit. You might want to install their packages in
 your system before building ET. One such a popular library is Boost,
 libboost1.50-dev."


 > The option "-fno-range-check" was added, this option only affects
 compilation and allows constructs like "1d0 / 0d0" to produce infinity.
 Was that intended?

 This option slipped from my private configuration file. One of our codes
 had a strange compilation abort which is fixed by adding this option. I
 will test it again without it to refresh my memory on this issue.


 > The comment is incorrect assuming that libltdl-dev is actually required
 (and #1717 indicates it is).
 >

 Yes, please update the comment with this library. I forgot to include it.

 > Note that this only fixes part of the problem and we still will have
 failures if a user does not install those libraries since building hwloc
 may detect libnuma.a (if libnuma-dev is installed) but eg detect.sh does
 not report this required library (and cannot do so since the library may
 not be installed and hwloc would compile fine without it).

 We could for the time being state that those libraries are mandatory if
 you want to avoid building the external libraries.

-- 
Ticket URL: <https://trac.einsteintoolkit.org/ticket/1764#comment:17>
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