[petsc-users] How to understand these error messages

[Jed Brown]

Fande Kong <fd.kong at siat.ac.cn> writes:
> They made some observations, and they might make some progresses.  I at
> least can make some runs now. They also say that it is something about
> ordering/rendezvous. They said that there may be too many messages or too
> long messages or both.

-log_summary for a slightly smaller problem will give a good idea of
 message size and count.
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