[mpich-discuss] Process termination with Hydra

[Pavan Balaji]

FYI, I had to revert this addition (what you are calling "sub-process 
termination") from Hydra as it was having some unexpected side-effects. 
For now, Hydra will only cleanup the processes that it spawned. If you 
fork other processes in your application, you will be responsible for 
cleaning them up. You'll get SIGTERM and SIGKILL signals in your 
application, which you can catch and use them to cleanup any child 
processes you might have spawned.

  -- Pavan

On 03/12/2011 12:24 AM, Pavan Balaji wrote:
>
> Nicolas just pointed out a part of your previous email about this:
>
> =======================================================================
> my application forks sub-processes. While I see that parent
> application process quits, but forked sub-processed are still left
> around. Another example is using valgrind (memcheck spawned process).
> I often see that sub-process are left around if I kill application in
> between. That makes me think that Hydra isn't cleaning sub-processes
> properly.
> =======================================================================
>
> I've added this support as well in r8222.
>
>    -- Pavan
>
> On 03/11/2011 10:33 PM, Pavan Balaji wrote:
>>
>> On 03/11/2011 05:23 PM, Jain, Rohit wrote:
>>> Would it improve sub-process termination too?
>>
>> What is sub-process termination?
>>
>>     -- Pavan
>>
>

-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji