[petsc-users] segfault in MatAssemblyEnd() when using large matrices on multi-core MAC OS-X

[Jed Brown]

On Wed, Aug 1, 2012 at 11:44 AM, Ronald M. Caplan <caplanr at predsci.com>wrote:

> This works on 1 processor but on multiple cores it segfaults if N is "too
> big" (around 3 million).   Is there an equivalent "flush" command for
> vectors to get around this?


You can just call the usual VecAssemblyBegin/End.

But 3 million should not be anywhere near a real problem. Can you reproduce
the problem on a different computer? This may be a system/environment
problem.
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