On Tuesday 21 October 2008, tom fogal wrote:
> I'm debugging a program which has an overwhelming number of errors.
> Most all of them come from LDAP code in a standard library, as well as
> various components of Open MPI, so they are not things I can
> reasonably fix.

If you tell openmpi  mpirun --mca btl tcp,self -np a.out  
does that reduce the noise level?  mpi apps tend to be very
noisy because they poke the nics directly in memory, and
memcheck doesn't understand what's going on.

Also, did you try the flag --ignore-ranges=0xPP-0xQQ[,0xRR-0xSS] ?
That was created expressly with the purpose of ignoring rances
of memory into which nics have been mapped.

J


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