[mpich-discuss] Hydra SIGTSTP (Ctrl+Z) handling

[Pavan Balaji]

On 11/29/2010 07:18 PM, Yauheni Zelenko wrote:
> Problem that our application (in non-MPI mode) supports SIGTSTP, so
> customers will expect such support from distributed versions too.
>
> Is it possible to trap inside Hydra and propagate signals from Hydra
> to remote processes with other means? For example, socket?

Hmm.. I had looked into this when we were adding checkpointing support 
and couldn't find a good way to do it.

However, when I try it now with the trunk version it seems to work fine, 
but I don't know exactly why it's working fine. I had redone the 
stdout/stderr handling in Hydra recently, but I didn't intend to fix 
anything with SIGTSTP.

I'll investigate this some more, but can you try out the nightly 
snapshot of Hydra?

http://www.mcs.anl.gov/research/projects/mpich2/downloads/tarballs/nightly/hydra

  -- Pavan

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