> 13 11.904056 2 1
> 12 11.904056 2 1 18
> 13 11.904056 2 1
-> 7 11.904056 1 1
> 13 11.905518 2 2
> 13 11.905518 2 2
> 12 11.905518 2 2 18
-> 7 11.905518 1 2
> 13 11.906032 2 3
> 12 11.906032 2 3 18
> 13 11.906032 2 3
+> 7 11.906032 1 1
+> 7 11.906032 1 2
> 7 11.906032 1 3
$ rm -f ${bindir:=.}/smpi_trace.trace