Re: [ptp-dev] Parallel Environment implementation for PTP Resource Manag

["Randy M. Roberts" <rsqrd@xxxxxxxx>]

Dave,

It's great to have you on board at this time.  We are currently trying
to hash out ideas on these subjects into resource manager requirements 
and a design.  Issue 2) is especially vexing, and we could do with
as much input as possible.

I'll be here next week, but I don't know anything about setting up
conference calls.

Regards,
Randy

On Fri, 2006-12-15 at 10:24 -0500, Dave Wootton wrote:
> I have my protoype code that implements PE support working, I think
> correctly with the PTP head level code I grabbed Tuesday night. The job
> view seems to update correctly, my PE implementation shows up as a resource
> manager that I can start and stop, and when I invoke an application using
> the PE resource manager, I can see the machine view update with state
> changes from available to running to completed as my job runs. It isn't
> perfect, but at least I'm somewhere in the right area.
> 
> So, if you have the time later next week, I'd like to have a conference
> call to discuss a couple things that I've been trying to resolve, and
> whatever else may come up.
> 
> 1) How should the machine view deal with how PE can be used interactively,
> where there is no global daemon running to trach the state of the cluster,
> and all a PE process knows about is itself? I can submit multiple PE jobs,
> each, in principle, with their own host list and therefore different set of
> nodes. This implies that the machine view can add and delete nodes. This
> also raises questions about deleting nodes, since otehr things may care
> about node numbering.
> 
> 2) What's the direction for specifying things like PE environment variables
> to run an application? The simplest solution is to just specify a script
> file that contains the environment variables, and in essence, run that
> before running the application. This puts the burden on the user to set the
> script up. The other extreme is to have settings panels, either in
> preferences or launch configuration, that provide checkboxes, buttons,
> droptdowns, etc, and maybe tooltip text so a new user sees something a
> little more friendly, but which puts the burden of managing the compexity
> of environment variable rules on the maintainers of the PTP code. Maybe
> both are required, to support both the new and experienced users.
> 
> I don't have any way to set up a conference call now (I should work on
> that), so if we can do this, I'll need somebody else to set one up.
> Somebody mentioned Thursday being better. That works for me, and I am
> around all week. If you would rather wait until January, I can do that too.
> 
> Thanks
> Dave
> 
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