[GE users] Runtime Design Automation?

Olesen, Mark Mark.Olesen at emcontechnologies.com
Tue Jul 17 15:49:40 BST 2007

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> Sounds reasonable, but juggler_remote does more than only adjusting.
> It's current tasks are
>     * changing number of available licenses based on decision made by
> license juggler
>     * retrieving per cluster information about current license demand
>     * retrieving per cluster information about current license
> utilization

For the integration, I would collapse juggler_remote utilized+required
together. They would pull back a block either similar to what is already
being cached:

rc_limit        gtpower=4,starcd=26,stars=2

Adding a rc_wait entry would provide the last bit of information.

For translation purposes:
  rc_limit  => max 
  rc_intern => utilized
  rc_wait   => demand?

The juggler_remote could even just pull back the entire license.cache,
without any processing, and let the juggler/schedule parse out what it

# query 
    [rs]sh $MACHINE cat MYPATH/license.cache

For sending the adjustments back, the jugger_remote could simply write a
resource limits file.

# assign
    echo limits | "[rs]sh $MACHINE cat > MYPATH/license.limits" 

At the moment, the limits are hard-coded, but a future version of qlicserver
will then consult the values in license.limits when adjusting the licenses. 

I think it should work quite well. The juggler and juggler_remote would be
greatly simplified. A bit of work is adjusting the scheduler for parsing new
input. But the juggler could address this or I could have a go at rewriting
the scheduler.c in Perl.

Is it safe to assume that you'll be at the workshop too?

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