Maybe it isn't actually us?  I believe there has been a bugfix release of 
parmetis beyond the version we include, but I haven't had time to try packaging 
it.

-Ben


On Jul 7, 2011, at 5:54 PM, "Roy Stogner" <[email protected]> wrote:

> 
> I've got an easy-to-reproduce but hard-to-fix runtime failure with
> --enable-parmesh: just run ex0 on 4 processors.  Or change the number
> of elements in the initial mesh it builds to 5, and run it with 5
> processors.  Etc.
> 
> The resulting memory corruption triggers a bad free deep in ParMETIS
> code, and on first examination I can't see why there's a problem.
> ParMETIS can't handle having any processors which lack initial
> elements, but we already test for that and fall back on METIS if
> that's the case.  (and indeed, running ex0 on 5 or more processors
> with 4 elements seems to work fine).
> 
> Any ideas?  I don't have time to check this out in depth myself right
> now, but I'd rather not stick in a "switch to METIS in this corner
> case" workaround unless we really have to.
> ---
> Roy

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