[Pgi-wg] TELCON Numbers and Reminder: 4 pm CET TODAY: GESDiscussions

[Andrew Grimshaw]

All,
I have read the document Moreno provided very carefully and have a large
number of comments that I will share when we discuss the document
morning/afternoon. First, thank you Moreno for putting "on paper". My high
level comments are: 

1) I that I feel it is important to clearly separate requirements from
mechanism in the first discussion. There many ways to solve a problem.

2) That minimalism in composable porttypes leads to cleaner design. In
particular, it might make sense to define a simple ActivityEndpoint porttype
that provides information for example on uri's to access the execution
directory for staging, etc. To quote another European 

"Perfection is achieved, not when there is nothing more to add, but when
there is nothing left to take away." 
Antoine de Saint-Exupery

3) The differences from the current BES are pretty minor, e.g.,
vectorization of create and change state.

As an aside, our experience with the current BES specification is that
passing back the list of activities "contained" by a BES resource is awkward
at best, and a performance inhibitor at worst.  A direct call to get the
instances makes much more sense. They way we have done this -- that does not
require any new specification is via the use of the RNS porttype to "list"
activities.

Andrew 



Ps. Moreno, it might be useful if you used a screen sharing software such as
glance while going through the document.

> -----Original Message-----
> From: pgi-wg-bounces at ogf.org [mailto:pgi-wg-bounces at ogf.org] On Behalf Of
> Morris Riedel
> Sent: Wednesday, April 08, 2009 7:40 AM
> To: pgi-wg at ogf.org
> Subject: [Pgi-wg] TELCON Numbers and Reminder: 4 pm CET TODAY:
> GESDiscussions
> 
> Dear PGI team,
> 
> 
>   Moreno will chair a telcon about the PGI GES Strawman document today!
> 
> 
> 2009-04-08 -  4 pm CET
> 
> Call-in details as follow:
> via Skype call +9900827049931906 (free of charge) ordinary phone numbers
> (local rates) with the 9931906 conference number:
> 
> Austria 0820 401 15470
> Belgium 0703 57 134
> France 0826 109 071
> Germany +49 (0) 180 500 9527
> Switzerland 0848 560 397
> 
> 
> Proposed agenda:
> 
> 
> (1)
> GES Strawman document
> 
> 
>  (2)
> AOB
> 
> 
> 
> Material can be found here:
> 
> http://forge.gridforum.org/sf/docman/do/listDocuments/projects.pgi-
> wg/docman
> .root.input_documents.execution_service
> 
> # Strawman Document
> # Initial supportive slides about some strawman content
> 
> 
> 
> 
> Your co-chair,
> Morris
> 
> 
> ------------------------------------------------------------
> Morris Riedel
> SW - Engineer
> Distributed Systems and Grid Computing Division
> Jülich Supercomputing Centre (JSC)
> Forschungszentrum Juelich
> Wilhelm-Johnen-Str. 1
> D - 52425 Juelich
> Germany
> 
> Email: m.riedel at fz-juelich.de
> Info: http://www.fz-juelich.de/jsc/JSCPeople/riedel
> Phone: +49 2461 61 - 3651
> Fax: +49 2461 61 - 6656
> 
> Skype: MorrisRiedel
> 
> "We work to better ourselves, and the rest of humanity"
> 
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> Vorstand: Prof. Dr. Achim Bachem (Vorsitzender),
> Dr. Ulrich Krafft (stellv. Vorsitzender)
>