SIGTSTP propagation for 0.80 ?

[Chris Samuel]

On Tue, 13 Sep 2005 07:23 am, Pete Wyckoff wrote:

> 1.  If PBS will send STOP to all processes (i.e. mpiexec and
> all the tasks in the job), why does mpiexec need to be
> involved at all?

I don't believe that PBS does, I believe it only sends the signal to the 
process on the mother superior and relies on that to propagate them through 
to any children. Hence why this is important. :-)

> 2.  What should happen if the user hits Ctrl-Z to mpiexec in
> an interactive job:  catch this TSTP and forward STOP to all
> the clients, or just pause the mpiexec and stdio processes
> but let the tasks continue to compute?

I would have said the former is more intuitive, but you could have the later 
as a command line/compile time option (in the same manner as the -comm is 
handled).

cheers!
Chris
-- 
 Christopher Samuel - (03)9925 4751 - VPAC Deputy Systems Manager
 Victorian Partnership for Advanced Computing http://www.vpac.org/
 Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia

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