From: Albert Lazzarini Date: Tue May 07, 2002 06:33:35 PM US/Pacific To: lsccompcomm@ligo.caltech.edu Subject: [Lsccompcomm] Minutes of meeting on 2002.05.07 Attendees: Blackburn, Brady, Finn, Katsavounidis, Koranda (guest, part of the time), Lazzarini, Nash, Finn. Anderson was absent. [1] Report from the GriPhyN/iVDGL meetings -- I know Kent went and I believe Sam, Patrick, and Alan were also present for part of the time? I would like to ask them to report briefly. Kent, Scott, Patrick, and Alan discussed their attendace at the GriPhyN and iVDGL all-hands semi annual meetings at ANL the week of 22 April. Kent reported that the LIGO participation in the Supercomputing 2001 convention was presented by the ISI people. He also reported that Mike Wilde approached him to discuss how the scheduler and job manager of LDAS was built. Mike indicated that he might come to visit Caltech in order to understand more fully what is being built. There was some discussion whether his intent was to see if any LDAS modules could be adopted by GriPhyN and "grid enabled" to perform similarly needed functions. Scott reported that the joint session with Sloan revealed little commonality with the astronomy progject (something that was already evident to Tom by virtue of his belonging to both Sloan and LSC). There was also some discussion on how the LIGO-LSC (from now on to be termed "LIGO") organizations are participating in the iVDGL: is it individual Tier 2 centers, or one monolith? The discussion was prompted by the draft USCMS MOU for iVDGL that Lazzarini circulated. It describes a tightly knit organization centered on the FNAL Tier 1 role within US CMS. There are key differences, however, between US CMS and LIGO: US CMS is the source of all monies being invested by the US in the US CMS computing effort at the Tier 1 and Tier 2 levels (Tier 2 final centers to be funded at universities by FNAL project management). [2] I will report on the Teragrid meeting. I hope to have a brief report of the meeting ready to circulate before tomorrow. Lazzarini circulated a trip report written by Stuart Anderrson, Scott Koranda and himself. The discussion centered on how LIGO can exploit Teragrid with the least tax on its own manpower. Finn expressed serious concern that becoming involved in this activity woudlo further deplete our already thin reserves. Lazzarini pointed out that the term of involvement should be ours to define. One clear win-win situation would be, e.g., if we could leverage off Scott's NCSA-funded part of his FTE to help out on LIGO code ports (as opposed to HEP code prots) of Teragrid computing. The consensus was that LIGO cannot afford to sit back, but that whatever we do, it must be done with a cautious eye towards not draining our resources by the involvement. [3] Scott Koranda has requested to be added to the LSC Computing Committee as an ex-officio member. We should discuss this as a group. The committee discussed this at length and the decision was to include Scott as a guest with a standing invitation to participate in *technical* discussions, but that he would not become involved in LSC non-technical issues. [4] Patrick circulated a notice to the LSC users of the UWM facility that there would be a new regimen for doing things that involves writing brief requests for access to computing resources. I have now received a number of such requests. They are not uniformly formatted and have varying degrees of details. I will concatenate these email I received and circulate them before tomorrow's meeting. We should discuss these and whether these unstructured formats are sufficient for us to proceed with implementing the resource allocation policy we discussed. Patrick reported that the requesters have been granted temporary extnesions while we (the computing committee) develop a comprehensive approach to issuing and tracking accounts and account usage. Kent discussed briefly his idea of a cgi-bin www interface that would allow users to request LDAS accounts that would be logged. The other Tier 2 centers are willing to adopt this if LIGO develops the interface. LIGO is working on this at the present time. Patrick suggested that the LSC home page should provide link into these functions. In addition, the memorandum that has become the policy needs to be posted. Lazzarini will discuss this with Rai. Lazzarini agreed to look into developing a pair of related www pages, to be accessible from the LSC home page, wherein would appear the list of users, their requests, and progress reports as they are submitted. [5] Any other business. Ran out of time Albert ------------------------------------------------------------------------- LIGO Laboratory California Institute of Technology M/S 18-34 1200 E. California Blvd. Pasadena, CA 91125 Data and Computing Room 609 Millikan Library Office: +1.626.395.8444 Facsimile: +1.626.304.9834 ------------------------------------------------------------------------- _______________________________________________ Lsccompcomm mailing list Lsccompcomm@ligo.caltech.edu http://mm.ligo.caltech.edu/mailman/listinfo/lsccompcomm ------------------------------------------------------------------------- LIGO Laboratory California Institute of Technology M/S 18-34 1200 E. 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