Ethan Mallove wrote:
> Can this error happen on any test?
Presumably yes if two or more processes are on the same node.
>What do these tests have in common?
They all try to start. :^) The problem is in MPI_Init.
>It almost looks like the problem is more likely to occur if MPI_UB or
>MPI_LB is involved or am I just imagining things?
I don't know that the statistics here are meaningful.