This is worth adding to the FAQ.
On Jun 9, 2009, at 2:31 AM, Ashley Pittman wrote:
On Mon, 2009-06-08 at 23:41 -0600, tom fogal wrote:
> George Bosilca <bosi...@eecs.utk.edu> writes:
> > There is a whole page on valgrind web page about this topic.
Please
> > read http://valgrind.org/docs/manual/manual-core.html#manual-core.suppress
> > for more information.
>
> Even better, Ralph (et al.) is if we could just make valgrind think
> this is defined memory. One can do this with client requests:
>
> http://valgrind.org/docs/manual/mc-manual.html#mc-
manual.clientreqs
Using the Valgrind client requests unnecessarily is a very bad idea,
they are intended for where applications use their own memory
allocator
(i.e. replace malloc/free) or are using custom kernel modules or
hardware which Valgrind doesn't know about.
The correct solution is either to not send un-initialised memory or to
suppress the error using a suppression file as George said. As the
error is from MPI_Init() you can safely ignore it from a end-user
perspective.
Ashley.
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Ashley Pittman
Padb - A parallel job viewer for cluster computing
http://padb.pittman.org.uk
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Jeff Squyres
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