September 2005 - ogsa-wg

No RM teleconference on the 13th
by Fred Maciel 13 Sep '05

13 Sep '05

Hi, No RM teleconference on the 13th -- not enough to discuss (and I'm in a business trip). Sorry for the reversal from my annouced plans. Please use e-mail for any discussions in the next couple of weeks. Regards, Fred Maciel Hitachi America R&D

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OGSA Security Profile - Secure Channel 1.0
by Takuya Mori 12 Sep '05

12 Sep '05

Hi, The first draft of "OGSA Security Profile - Secure Channel 1.0" has been uploaded to the grid forge. Document URL: /projects/ogsa-wg/document/OGSA_Security_Profile_-_Secure_Channel_-_1.0/en/2 I'm sorry for my being late to upload this. (It took even longer than I expected.) ---- Takuya Mori moritaku(a)bx.jp.nec.com / tk-mori(a)isd.nec.co.jp System Platform Software Development Division NEC Corporation, Tokyo Japan

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Update to OGSA 1.5
by Andrew Grimshaw 12 Sep '05

12 Sep '05

All, While explaining OGSA to some very technical folks last week it came up that the 1.0 document does not describe an "object model" so to speak. in other words, what are the "atoms", what is the minimum we assume, etc. For example, we assume: that resources have interfaces, that they process messages, that their behavior may be history dependent, that they are referenced with EPR's, that the atoms may have a unique AbstractName that they may be both servers and clients of other services We also seem to assume that there is some mechanism to get/set some form of metadata (resource properties) We seem to want to be able to find out what interfaces are supported (it is in base profile .. And I think should be in any profile - opinion) We seem to assume a factory pattern - though it is not explicit, and not part of lifetimes I am sure there are others. Comments? Should I write something up along this line for inclusion in the 1.5 document? Andrew

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OGSA v1.5 RM section (3.6) - first cut
by Fred Maciel 10 Sep '05

10 Sep '05

Hi, Here is the first version of the Resource Management section for OGSA v1.5. It has corrections by Steven, Ellen and by me. https://forge.gridforum.org/projects/ogsa-wg/document/ogsa-v15-rm/en/1 Andreas: double-check if there are any pending comments on this section apart from the one on improving the contents of sections 3.6.3 and 3.6.5 (I'll do it as soon as I have some time). Also: please notice that there I re-pasted the picture (it has to be pasted as enhanced metafile) and corrected the WSDM and CMM document references in the end. Regards, Fred Maciel Hitachi America R&D

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Regrets for week of the 12th
by Fred Maciel 09 Sep '05

09 Sep '05

Hi, I'll be in the EMW conference this week, so I won't be in the conference calls on Monday and Wednesday. On the other hand, we will have the RM design team teleconference on Tuesday, on the usual time slot -- I'll post an announcement soon. Regards, Fred Maciel Hitachi America R&D

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Notes from September 7 telecon
by Treadwell, Jem 09 Sep '05

09 Sep '05

Hi, the notes from Wednesday's call are available at http://tinyurl.com/bu8ab. These include Mark's notes from the first half of the meeting, my notes from the second half, and the excellent review that Ravi sent immediately after the meeting. Thanks, - Jem ________________________________ Jem Treadwell Hewlett-Packard Company 6000 Irwin Road Mount Laurel, NJ 08054 Phone: 856-638-6021 Fax: 856-638-6190 E-mail: Jem.Treadwell(a)hp.com <mailto:Jem.Treadwell@hp.com>

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RE: [ogsa-wg] BES query
by Dave Berry 09 Sep '05

09 Sep '05

> -----Original Message----- > From: Tom Maguire [mailto:tmaguire@us.ibm.com] > Sent: 31 August 2005 14:51 > Subject: Re: [ogsa-wg] BES query > > > The other major camp places a high priority on implementer and > > application freedom to use different reference formats. It considers > > that references always exist in some implicit relational model > > (maintained by applications, communities, etc.) where interesting or > > important identity attributes are maintained. As such, the > > references themselves do not need to express identity for interop. > > Yes, Distributed Computing 101. If you authoritatively want > to test if two things are the same you MUST ask the things. The W3C Technical Architecture Group have a document called "The Architecture of the World Wide Web, Volume One" (http://www.w3.org/TR/2004/REC-webarch-20041215/) This states "URIs that are identical, character by character, refer to the same resource". I don't see why this should cause a problem. > The real difficulty for me (and implementers) is the > "universal" context in which these identities live. One of the > reasons that hierarchical namespace lookups exist is because they > are capable of massively scaling. Well, any given URI scheme can be hierarchic, so you could just restrict yourself to such schemes. In any case, it's not clear to me that there's a problem here - isn't this question of scale one of lookup (i.e. registering/discovery)? Abstract names don't address this; all they promise is that if you have two abstract names that are the same, they denote the same thing. You should be able to build a hierarchic lookup system via the resolver EPRs. What does concern me about the three-level naming scheme is what happens if I have one sort of name "in my hand" and the interface that I'm calling wants a different one. This is another way of saying that the naming scheme is core to the entire architecture. I would like to see a document that explains the naming architecture, in much the same way that the W3C document does. In the meantime, my worry is that we seem to be trying to satisfy both camps, and are therefore in danger of building incompatible systems on top of the same specification. Dave.

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Proposed agenda for Sept. 12th call
by Hiro Kishimoto 09 Sep '05

09 Sep '05

Hi all, The following is a proposed agenda for OGSA-WG telecon on September 12th Monday from 5pm to 7pm (CDT). The dial-in number for Monday; Free: +1-866-639-4741 Toll: +1-574-935-6703 PIN: 8980700 Screen share service will be provided. URL: http://ogsa.glance.net Session key: 0912 See more explanation: http://www-unix.gridforum.org/mail_archive/ogsa-wg/2004/06/msg00077.html 1) Early discussion (20 min) Note taker assignment Roll call Telecon minutes approval Agenda bashing 2) Roadmap document final review (30 min) Hiro has uploaded the revised version (021) to the GridForge. https://forge.gridforum.org/projects/ogsa-wg/document/draft-ggf-ogsa-roadma… Make final call if possible 3) OGSA Basic Security Profile - Secure Channel 1.0 (60 min) Takuya has uploaded the first version of the profile https://forge.gridforum.org/projects/ogsa-wg/document/OGSA_Security_Profile… 4) Wrap up (10 min) AOB <NEXT CALL> Sept. 14 (Wed) EMS architecture (CDDLM-WG joint call) Sept. 19 (Mon) Architecture & Glossary 1.5 Sept. 21 (Wed) GGF15 & F2F preparation Telecon schedule: https://forge.gridforum.org/projects/ogsa-wg/document/telecon_schedule/ ---- Hiro Kishimoto

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Roadmap v19 uploaded
by Treadwell, Jem 09 Sep '05

09 Sep '05

Hi, I've uploaded Roadmap v19, and the spreadsheet. This includes my own editing changes from recent calls, the public comment changes, and the changes that Tom & Takuya made. All the referenced-spec tables are dated September 1st. I made some editing changes to Tom's text, and agreed it with Tom. I've also made some editing changes to Takuya's text: Takuy, can you please check this and verify that it's OK - I want to be sure I didn't change the meaning of anything you said. I'm not making this the Final Call version yet, because I need to clarify something: although Takuya put the AuthZ docs in section 5, and I agree that they're profiles (though the Use of SAML doesn't actually mention the word profile), the versions I found on GridForge don't conform to the OGSA Profile Definition. I'm not sure if that's a change that the group is planning before publication - Takuya, do you know? Also should we be making conformance a criteria for inclusion in section 5? We can discuss this on Wednesday, but if anyone has info or wants to comment by mail, go ahead. Thanks - have a great weekend... - Jem ________________________________ Jem Treadwell Hewlett-Packard Company 6000 Irwin Road Mount Laurel, NJ 08054 Phone: 856-638-6021 Fax: 856-638-6190 E-mail: Jem.Treadwell(a)hp.com <mailto:Jem.Treadwell@hp.com>

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An article that might be of interest
by Ian Foster 08 Sep '05

08 Sep '05

Describing the Elephant: The Different Faces of IT as Service, ACM Queue, July/August 2005. PDF: http://acmqueue.com/special/ftpfiles/articles/foster.pdf HTML: http://acmqueue.com/modules.php?name=Content&pa=showpage&pid=319 Regards -- Ian. _______________________________________________________________ Ian Foster www.mcs.anl.gov/~foster Math & Computer Science Div. Dept of Computer Science Argonne National Laboratory The University of Chicago Argonne, IL 60439, U.S.A. Chicago, IL 60637, U.S.A. Tel: 630 252 4619 Fax: 630 252 1997 Globus Alliance, www.globus.org

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