[Pgi-wg] Meeting on 2009-10-09, 16:00 (CET) Notes

Fri Oct 9 10:17:28 CDT 2009

Many thanks Johannes!

------------------------------------------------------------
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"

Sitz der Gesellschaft: Jülich
Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498
Vorsitzende des Aufsichtsrats: MinDirig'in Bärbel Brumme-Bothe
Vorstand: Prof. Dr. Achim Bachem (Vorsitzender), 
Dr. Ulrich Krafft (stellv. Vorsitzender)

>------Original Message-----
>-From: pgi-wg-bounces at ogf.org [mailto:pgi-wg-bounces at ogf.org] On Behalf Of Johannes Watzl
>-Sent: Friday, October 09, 2009 5:10 PM
>-To: pgi
>-Subject: [Pgi-wg] Meeting on 2009-10-09, 16:00 (CET) Notes
>-
>-Dear all,
>-
>-please see the notes from today's meeting below.
>-
>-Best,
>-Johannes
>-
>-
>-Participants:
>-Luigi, David, Johannes, Morris, Etienne
>-
>-1) Look at the minutes from last time.
>-
>-2) Discussion:
>-createActivity action
>-createMultiplteActivity
>-
>-David: ordinary JSDL? - means not going to a new JSDL
>--> meet in the middle
>-
>-David:
>-SRM, SRB
>-ftp, gridftp?
>-
>-Morris:
>-ftp, gridftp still in scope
>-SRB partly the same approach
>-
>-document initial version not covering data staging
>-
>-overall overview, two month out. only few comments from Etienne
>-no crucial comments
>-need for reference implementation
>-
>-PGI profile on top of BES 2.0
>-
>-proceed with the reference implementation and get out with the PGI
>-writings in parallel to the implementation
>-
>-parts from Andrew, parts from other standards
>-
>-Go to document:
>-Execution port type:
>-
>-Any question to the execution port type interface?
>-
>-Continue with 2nd chapter:
>-Action for Balazs and Morris:
>-GLUE 2 tunings, exectution port type
>-Action for Balazs and Morris:
>-fault mechanism
>-
>-createActivity: discussing of possible fault
>-
>-parameter sweep
>-not agree to transaction approach, not wanted currently
>-
>-browsing all epr
>-
>-Morris:
>-postpone transaction
>-go into the vector operation
>-
>-Luigi:
>-transaction is not important at the moment
>-all jobs are single jobs, not interested in grouping jobs at the moment
>-no reason to change transaction
>-
>-Etienne:
>-out of scope
>-
>-Morris:
>-it is not only grouping - it is a bit more
>-would not call out of scope - not every partner is represented today
>-
>-2)
>-createActivity operation
>-stresses changeability of BES, OGSA-BES2.0
>-how much BES has to be tweaked to move to our approach
>-
>-in the reference implementation epr
>-
>-is there some problem with this?
>-no
>-
>-data staging
>-how could data staging work?
>-extend a little bit
>-
>-partly covered by PGI service
>-extend the usage of credentials
>-
>-Action for Morris: security aspects for credentials in data staging
>-
>-typical way of doing
>-JSDL
>-not invent something new
>-provide more protocols
>-hierarchical approach to provide more functionality
>-
>-data push from a client perspective
>-users from ARC, gLite mentioned this
>-
>-partly related to the state model
>-
>-Action for Etienne:
>-how much of the createActivity operation is covered by the state model?
>-(client initiated data staging)
>-
>-other side effect:
>-hold points
>-continue operation
>-postpone and continue operation
>-keep out of the question now
>-
>-focus on different aspects
>-figure of the process published (Morris)
>-
>-Action for Morris:
>-createActivite figure of process should be delivered
>-
>-Action for Morris: ask Shahbaz dataurl createActivity
>-
>-Requests:
>-fearly  easy
>-AGU JSDL working title
>-
>-quite a long discussion what activities are valid
>-
>-look behind the response
>-
>-JSDL element is dropped - no error
>-other implementations return an error if dropped.
>-
>-have a look on Job description document validation
>-
>-XML valid or not?
>-
>-next level: check document according to the schema
>-
>-is the sematics the same as we understand?
>-important to check the semantic
>-
>-services are not really supporting parts of description
>-should have somewhere the information what kind of data staging
>-information is provided
>-agreed to have this list. how this can be nailed down
>-
>-Action to all: what is meant by service capabilities?
>-link to GLUE2? influence?
>-
>-final discussion was what is understood by match making
>-never ignore things
>-
>-if we take this JSDL doc - in the past simply ignored it
>-leading to the point -> never a fault -> user thought everything is fine
>-
>-consensus: not ignore things any more
>-
>-submit state:
>-Action for Etienne and Luigi: have a look at submit state
>-email with answer
>-email discussion will go on.
>-
>-Question to Lugi:
>-last tbd in createactivity: lease?
>-Luigi:
>-each job has an attribute for basically the time to live of the job
>-renewed by client as long the client and the service can talk
>-when lease expires the job is removed from both sides
>-
>-Action for Luigi: email:
>-Subject createActivity operation, lease
>-start email thread
>-
>-AOB?
>-
>-Etienne: lease?
>-what is the relationship with the timeline of the proxy
>-
>-Luigi:
>-not related, but depends on the implementation
>-proxy can be renewed and lease can also be renewed
>-no true relationship between lease and proxy
>--> include in email.
>-
>-Actions for Johanens:
>-action list also on email
>-remember people before next meeting, tasks
>-
>-David:
>-push Morris comments on BES
>-
>-
>---
>-        _  _ _  _ _  _          Johannes Watzl
>-        |\/| |\ | |\/|          Institut für Informatik / Dept. of CS
>-        |  | | \| |  |          Ludwig-Maximilians-Universität München
>-     ======= TEAM =======       Oettingenstr. 67, 80538 Munich, Germany
>-                                Room D0.5, Phone +49-89-2180-9162
>-Munich Network Management Team  Email: watzl at nm.ifi.lmu.de
>-Münchner Netz-Management Team   http://www.nm.ifi.lmu.de/~watzl
>-_______________________________________________
>-Pgi-wg mailing list
>-Pgi-wg at ogf.org
>-http://www.ogf.org/mailman/listinfo/pgi-wg
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