[Mpi3-tools] New MPIT draft available / Question regarding Verbosity

Marc-Andre Hermanns m.a.hermanns at fz-juelich.de
Mon Feb 8 02:46:38 CST 2010


although not part of the MPIT chapter, the first page (chapter 1.2.1) on
line 32/33 seems to be missing a verb. The sentence ends right after the
 "... as macros (See Section x)." and I would expect a phrase like "can
be intercepted".

Best regards,

PS: I had to remove the color option of the changebars package becaus of
some "option name clash" regarding "color". Without the option is
compiles fine.

Martin Schulz wrote:
> Hi all,
> I uploaded a new draft of the MPIT proposal to
> https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Tools/draft
> Changes since the last draft are marked with changebars and are  
> colored in green.
> The latest draft contains changes based on comments from Kathryn  
> Mohror and
> the MPI group at Sun/Oracle.
> There is one open question that I would like to bring up for a general  
> discussion:
> as discussed in the WG earlier, we need some kind of verbosity  
> parameter that
> allows the MPI implementation to classify each variable according to  
> its importance
> and general usage scenario. Jeff and I have been going forth and back  
> on this
> one for a while over email, but we can't come to a useful conclusion  
> and hence
> would like wider feedback.
> In general, we both  think that we want 5 classes of verbosity (odd  
> number larger
> than 3, but not too large).
> The original proposal had the following classes
> which was rejected by the forum (I think rightfully so) since it  
> doesn't really convey
> any useful application level information.
> The current proposal has:
> with the idea that the first two classes are intended for general MPI  
> users,
> the third and fourth for performance experts and system administrators
> wishing to tune the performance of MPI itself, while the fifth is for  
> implementors and would include debugging information.
> Open MPI uses a similar idea of verbosity and defines the following
> five classes:
> However, both Jeff and I don't like these classes, since they don't  
> convey
> any useful information either.
> Jeff proposes something like
> ?
> ?
> but this proposal misses good names for 2 and 4.
> Any comments or suggestions (either extending one of the above or  
> completely
> new) would be very much appreciated.
> Thanks,
> Martin
> ________________________________________________________________________
> Martin Schulz, schulzm at llnl.gov, http://people.llnl.gov/schulzm
> CASC @ Lawrence Livermore National Laboratory, Livermore, USA
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> Mpi3-tools at lists.mpi-forum.org
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Marc-Andre Hermanns
Juelich Supercomputing Centre
Institute for Advanced Simulation
Forschungszentrum Juelich GmbH
D-52425 Juelich

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