[Beowulf] An annoying MPI problem
reuti at staff.uni-marburg.de
Thu Jul 10 15:02:35 PDT 2008
Am 10.07.2008 um 17:02 schrieb Joe Landman:
> Lombard, David N wrote:
>>> I'll try all the usual things (reduce the optimization level, etc).
>>> Sage words of advice (and clue sticks) welcome.
>> Not trying to sound like an ad...
>> The currently shipping Intel Trace Collector and Analyzer (7.1),
>> message correctness checking. An option is available that adds a
>> library to an Intel MPI build that checks messages during the run.
>> You can then view any errors it found in the Intel Trace Analyzer.
>> This may find there's a problem that has only just started to trip
>> code up. I certainly have welts from those; I suspect others do too.
> Actually, Intel MPI and related tools are in general one of the
> things we want to try. User may be open to that (especially if it
> is more pain free than the alternative).
isn't Intel MPI based on MPICH2 - is there any file what they added/
changed in detail?
> We have reliable functional non-sm/non-ib based execution on
> multiple machines now. New code drop coming, so we have to wait on
> that. Once we have that, we'll be doing more testing.
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics LLC,
> email: landman at scalableinformatics.com
> web : http://www.scalableinformatics.com
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