[petsc-dev] Error on large problems.

[Barry Smith]

  Hmm,  my first guess is a mixup between PetscMPIInt and PetscInt arrays  or MPIU_INT somewhere. (But compilers catch most of these)

  Another possibility is bug in the MPI for many large messages; any chance you can run the same thing on a very different system? Mira?

  Barry

> On Mar 7, 2015, at 1:21 PM, Mark Adams <mfadams at lbl.gov> wrote:
> 
> I seem to be getting this error on Edison with 128K cores and ~4 Billion equations.  I've seen this error several time.  I've attached a recent output from this.  I wonder if it is an integer overflow.  This built with 64 bit integers, but I notice that GAMG prints out N and I see N=0 for the finest level.
> 
> Mark
> <out.131072.uniform.txt>