[mpiwg-tools] Reading of ticket #484

Marc-Andre Hermanns hermanns at jara.rwth-aachen.de
Thu Oct 1 02:07:29 CDT 2015

Dear all,

there were several comments and modification requests during our
reading of ticket #484 that will require another reading.

I put up the notes from the reading at:


Kathryn and I would like to discuss this at the next call on Oct 8, 2015.

The most pressing question in advance is that we think about where the
symbol _needs_ to be defined, if at all. The current definition is a
little ambiguous. As the variable is optional, the common
understanding during the discussion was that it does not have to be
available in _every_ process. Does it lead to complications for the
Debuggers (bookkeeping, etc.) if some MPI processes have the symbol
and others do not? Should we rather have a "all or none" semantic?

It would be great, if we could discuss this prior to next week, so we
can finalize the wording on this ticket during the call.


Marc-Andre Hermanns
Jülich Aachen Research Alliance,
High Performance Computing (JARA-HPC)
Jülich Supercomputing Centre (JSC)

Schinkelstrasse 2
52062 Aachen

Phone: +49 2461 61 2509 | +49 241 80 24897
Fax: +49 2461 80 6 99753
email: hermanns at jara.rwth-aachen.de

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