Process interrupted error

[Knut Erik Teigen]

On Wed, 2007-04-11 at 06:55 -0500, Barry Smith wrote:
>   Something is sending an interupt signal to all the proccess
> except one. We've seen this happen where the "batch or node
> scheduler does this to kill a long running job".
> 
>   Does it happen even if the parallel vector is real short?

Yes, even with a vector of size 1, this happens.
> 
>   Does the machine seem to hang at that point or does the sigint
> come immediately?
It hangs for a short period, and then displays the sigint error.
When running with 2 processes, it also hangs a bit, but then continues
with the correct results.
> 
>   Can you us the runtime option -start_in_debugger or totalview
> to catch the signal?
Something really weird happens here. The first time I run the program
with -start_in_debugger noxterm,idb , it finishes correctly, no matter
the number of processes or problem size. The second time, however, I get
the sigint errors.
When I run with idb I get:
(idb) Program exited normally.
(idb) Program received signal SIGINT

With gdb I get:
0xffffe410 in __kernel_vsyscall ()
and then the program hangs.

However I get this message in the beginning with both:
[3]PETSC ERROR: PETSC: Attaching gdb to ./out of pid 30549 on ivt0415

-Knut Erik-

> 
>    Barry
> 
> On Wed, 11 Apr 2007, Knut Erik Teigen wrote:
> 
> > Hello,
> > 
> > I get the following error when trying to copy a solution vector to
> > process zero using VecScatterCreateToZero:
> > 
> > [0] VecScatterCreate(): Special case: processor zero gets entire
> > parallel vector, rest get none
> > forrtl: error (69): process interrupted (SIGINT)
> > forrtl: error (69): process interrupted (SIGINT)
> > 
> > When running with one or two processes, the code runs fine, but with
> > three or more, the above error occurs, with one "process interrupted"
> > error for each process minus one. Could someone help me figure out
> > what's wrong?
> > 
> > Regards,
> > Knut Erik Teigen
> > 
> >  
> > 
> > 
> 
>