I have put together a draft template for a study of existing Discovery systems and design of future OGSA discovery. Comments on the template as well as contributions from existing grid projects are most welcome. Abdeslem PS: David: The Unicore text below covers items 1,2,3 and 9 from the template. I can cut and paste it if you want but a bit more information on the interfaces and the data model would be nice. -----Original Message----- From: David Snelling [mailto:David.Snelling@uk.fujitsu.com] Sent: Wednesday, September 28, 2005 2:33 PM To: Djaoui, A (Abdeslem) Subject: Re: [ogsa-wg] OGSA WSRF BP 1.0 Editor submission final call Abdeslem, On 28 Sep 2005, at 12:13, Djaoui, A ((Abdeslem)) wrote:
Thanks for that Dave, it might be useful if we put a template together and ask different projects to fill it in. I will circulate a draft ASAP.
Good idea. If you can pick apart the Unicore answer for the sections, it might give you a head start. If you think of sections I haven't implicitly filled in already, let me know. I'll fill them in quickly and you can have a sample as well as a template.
Abdeslem
-----Original Message----- From: David Snelling [mailto:David.Snelling@uk.fujitsu.com] Sent: Sat 9/24/2005 12:33 PM To: Hiro Kishimoto Cc: Djaoui, A (Abdeslem); Andreas Savva; ogsa-wg@ggf.org Subject: Re: [ogsa-wg] OGSA WSRF BP 1.0 Editor submission final call
Abdeslem,
To get you started:
Registry services in Production Unicore are integrated (the Grid fabric populates it rather than allowing registration). The registry of available resources, software, system load, and other services (such as brokers) are may available to clients on request. Most of this information is static and clients may choose to cache it. Most clients today cache it for the time they run and then refresh it when the start up. The Intel client allows manual refresh. Each registry is maintained by the sites, i.e. there is no central regisrty. However, the University of Manchester's Resource Broker I believe caches information from several sites to facilitate "Candidate Set Generation". Access to all this information is subject to authorization, e.g. non-public registry.
There has been some concern that the registry is an "all or nothing" implementation without a search facility causes an excessive load on server to client communication, but we have never had feedback from this issue.
There is a separate mechanism for registering jobs. By default, users see their own root jobs at the site where they were consigned. Sub-jobs at each site are only visible optionally - not supported by most clients today. There is a admin role that allows administrators to see jobs at a remote site.
In the prototype Unicore/GS, built on WSRF, the registry is still in the planning stages. It is expected that all the above information, which is already available as Resource Properties of the "Atomic Services" (the Unicore dual to GRAM, RFT, etc.) will be available also through a Service Group based registry in the near term.
We have not studied the possibility of a UDDI registry since the OGSI days. There may be fresh possibilities there.
On 24 Sep 2005, at 2:35, Hiro Kishimoto wrote:
Hi Abdeslem,
As a first step of defining Discovery and Registry in the Grid, can you champion a study of existing grip projects; EGEE, OMII, Globus, UNICORE, TeraGrid, etc.
Thanks, ---- Hiro Kishimoto
Andreas Savva wrote:
In OGSA, yes. But the WSRF BP is not the place to make such statements. The Roadmap is, so if there is a specific plan it should be added there. Djaoui, A (Abdeslem) wrote:
Well, my point is that Discovery is fundamental in OGSA and MUST be (not MAY be) addressed by OGSA, especially now that UDDI is excluded from the base profile. But I agree that the plans and decisions are still to be discussed.
Abdeslem /////////////
-----Original Message----- From: Andreas Savva [mailto:andreas.savva@jp.fujitsu.com] Sent: Thursday, September 22, 2005 2:10 PM To: Djaoui, A (Abdeslem) Cc: Hiro Kishimoto; ogsa-wg@ggf.org Subject: Re: [ogsa-wg] OGSA WSRF BP 1.0 Editor submission final call
I disagree. There are no firm decisions or plans so 'may' is more appropriate at the moment.
Andreas
Djaoui, A (Abdeslem) wrote:
Hi Following from previous email... I see I am too late and a decision has already been made. So I suggest modifying the sentence "There may be additional profiles in the future that will include discovery functions"
to:
"Discovery will be covered by future specifications and profiles."
Abdeslem //////////////
-----Original Message----- From: owner-ogsa-wg@ggf.org [mailto:owner-ogsa-wg@ggf.org] On Behalf Of Hiro Kishimoto Sent: 22 September 2005 09:26 To: ogsa-wg@ggf.org Subject: [ogsa-wg] OGSA WSRF BP 1.0 Editor submission final call
Hi all,
At the today's OGSA-WG call, we discussed BP 1.0 once more and agreed the following two;
(1) Exclude UDDI section of WS-I BP 1.1 from OGSA WSRF BP Now, section 1.2 (page 4 line 114-116) says;
This Profile extends the WS-I Basic Profile 1.1 [WS-I BP 1.1]. All
requirements except for section 5 "Service Publication and Discovery" specified in WS-I BP 1.1 pertain to this Profile. There may be additional profiles in the future that will include discovery functions.
Revised really final draft (v043) is on the GridForge. https://forge.gridforum.org/projects/ogsa-wg/document/draft-ggf- ogsa-wsr f-basic-profile/en/39
(2) Submit OGSA WSRF BP 1.0 (v043) to GGF Editor this Friday Given that OGSA Basic Security Profiles need more time to complete (maybe after GGF15), we agreed to submit OGSA WSRF BP 1.0 alone to GGF Editor this Friday. If you have any farther comments on this draft, please let us know before EoB Friday (Sept. 23).
Thanks,
--
Take care:
Dr. David Snelling < David . Snelling . UK . Fujitsu . com > Fujitsu Laboratories of Europe Hayes Park Central Hayes End Road Hayes, Middlesex UB4 8FE
+44-208-606-4649 (Office) +44-208-606-4539 (Fax) +44-7768-807526 (Mobile)
-- Take care: Dr. David Snelling < David . Snelling . UK . Fujitsu . com > Fujitsu Laboratories of Europe Hayes Park Central Hayes End Road Hayes, Middlesex UB4 8FE +44-208-606-4649 (Office) +44-208-606-4539 (Fax) +44-7768-807526 (Mobile)