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Subject: Re: [OMPI devel] PLM consistency: launch agent param
From: Ralph H Castain (rhc_at_[hidden])
Date: 2008-07-11 10:46:27


I suppose we could even just make it an mpirun cmd line param, at that
point. As an MCA param, though, we have typically insisted on a particular
syntax that includes framework and component...

On 7/11/08 8:41 AM, "Don Kerr" <Don.Kerr_at_[hidden]> wrote:

> For something as fundamental as launch do we still need to specify the
> component, could it just be "launch_agent"?
>
> Jeff Squyres wrote:
>> 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
>>>
>>>
>>> _______________________________________________
>>> devel mailing list
>>> devel_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>>
>>
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