[ogsa-bes-wg] BES spec

[Steven Newhouse]

  > * The extensible state model: this seems a great idea. However, I feel
> concerned that there are difficulties lurking there that we haven't 
> discovered yet. Is there any prior work here that we can refer to in 
> order to make ourselves (and others) feel more confident in the approach?

This was discussed at the telecon and hopefully reflected in the 
tracker. My initial interpretation was 'adhoc' extensibility but 
(thankfully IMHO) this could be better described as state model 
profiles, i.e. one state model will probably not fit all 
implementation/scenarios therefore several defined models should be 
profiled. From discussions there should not be that many... but it would 
allow implementations to have a defined state model if they offered 
suspension, but they could still produce a BES compliant implementation 
if they did not and have a defined state model for it.

> * Information model: I certainly think we need an information model. On 
> the other hand, I wonder if we might want to think about pulling the 
> details out as a "profile." What we have is just what we need for our 
> current HPC use cases; on the other hand, if one is modeling say a Java 
> container, they might be less appropriate. Thoughts?

The current model in the spec. was felt to enforce/expect too much 
homogeneity. Altering it to support vectors of description sets was felt 
essential. Alongside that to have a well defined and required minimum 
set up then to let communities define additional parameters to be 
introduced as extensibility elements. For later standardisation

> * Management operations: we currently have a couple of operations 
> ("start/stop accepting requests") that are really container management 
> rather than job operations. Could we separate those out in a distinct 
> port-type?

In my view they need to go in the spec, and are different from the 
generic management activities you might have on a container (i.e. stop 
the container). If the are rendered into a different port type... I 
don't see an issue - a tracker beckons.

> * I know there was discussion about how to handle single-job vs. 
> multi-job operations in a consistent manner, but I don't know how that 
> was reconciled.

It hasn't. It has not yet been discussed!

Steven
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Dr Steven Newhouse   Mob:+44(0)7920489420  Tel:+44(0)23 80598789
Director, Open Middleware Infrastructure Institute-UK (OMII-UK)
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