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Subject: Re: [OMPI devel] PLM consistency: launch agent param
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2008-07-11 10:19:06


Sounds good to me. We've done similar things in other frameworks --
put in MCA base params for things that all components could use. How
about plm_base_launch_agent?

On Jul 11, 2008, at 10:17 AM, Ralph H Castain wrote:

> Since the question of backward compatibility of params came up... ;-)
>
> I've been perusing the various PLM modules to check consistency. One
> thing I
> noted right away is that -every- PLM module registers an MCA param
> to let
> the user specify an orted cmd. I believe this specifically was done so
> people could insert their favorite debugger in front of the "orted"
> on the
> spawned command line - e.g., "valgrind orted".
>
> The problem is that this forces the user to have to figure out the
> name of
> the PLM module being used as the param is called "-mca
> plm_rsh_agent", or
> "-mca plm_lsf_orted", or...you name it.
>
> For users that only ever operate in one environment, who cares.
> However,
> many users (at least around here) operate in multiple environments,
> and this
> creates confusion.
>
> I propose to create a single MCA param name for this value -
> something like
> "-mca plm_launch_agent" or whatever - and get rid of all these
> individual
> registrations to reduce the user confusion.
>
> Comments? I'll put my helmet on....
> Ralph
>
>
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-- 
Jeff Squyres
Cisco Systems