unknown signal

[Glen Beane]

mpiexec: Warning: task 0 died with signal 9748 (Unknown signal: 9748).


Can anyone help me out here?  What's going on?  I'm pretty sure this 
isn't my code, since it works fine up too 200+ processors.  when I ran 
on 240 processors the job rank OK for 22 minutes, then barfed with a 
bunch of p4 errors and I got this error from mpiexec.  The job should 
have ran for aprox 2 hours.