[mpich-discuss] Hydra issues

Rusty Lusk lusk at mcs.anl.gov
Wed Aug 26 09:58:51 CDT 2009


I thought mpd did something like this, in the manager.

On Wednesday,Aug 26, 2009, at 9:56 AM, Pavan Balaji wrote:

>
>> Is there a downside to using:
>> setbuf (stdout, NULL);
>> setbuf (stderr, NULL);
>
> This needs to be set in the application -- Hydra is not getting the  
> output, so it's not a buffering problem in Hydra.
>
> But maybe I can set this inside the forked process before the  
> application process is being execvp'ed. Hopefully, the application  
> process will inherit it. Let me try.
>
>> Also, why does using persistent proxies allow immediate output?
>
> Hmm.. In my experiments, the output gets buffered with persistent  
> proxies as well. Do you have a simple test program?
>
> -- Pavan
>
> -- 
> Pavan Balaji
> http://www.mcs.anl.gov/~balaji



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