1 / 5

A first look on the gLite RB (and more) Stefano Bagnasco I.N.F.N. Torino

A first look on the gLite RB (and more) Stefano Bagnasco I.N.F.N. Torino. ALICE Software Week – CERN June 1, 2005. www.eu-egee.org. EGEE is a project funded by the European Union under contract IST-2003-508833. Catalog. IN F N GRID Prod BDII. LFC Clients. The test setup.

landon
Download Presentation

A first look on the gLite RB (and more) Stefano Bagnasco I.N.F.N. Torino

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A first look on the gLite RB (and more)Stefano BagnascoI.N.F.N. Torino ALICE Software Week – CERN June 1, 2005 www.eu-egee.org EGEE is a project funded by the European Union under contract IST-2003-508833

  2. Catalog INFNGRIDProd BDII LFC Clients The test setup • Set up of a test gLite RB & CE in Torino • test job submission, interaction with the ALICE file catalogue and, gradually, other pieces of the framework • Thanks to R. Brunetti, F. Nebiolo • Tests of storage and data management components in Bari • dCache+SRM, FTS, DPM (coming soon) • To be integrated with the Torino setup to build a full testbed • Thanks to G. Donvito, N. Fioretti, F. Minafra grid007.to.infn.it gLite 1.1 RB+LB gLite 1.1 UI Collaboration Meeting ALICE-Italia – Cagliari May 4, 2005- 2

  3. First results • Jobs sent to gLite RB (grid007.to.infn.it): 1000, to LCG 2.4.0 on INFNGRID CEs: • Not yet completed: 37 • Completed: 661 (68%) • Aborted: 72 (8%) • Error: 230 (24%) • AliROOT crash: 28 • NFS crash: 143 • WN disk space < 4GB: 55 • Other (not investigated) 4 • Funny RB problem: 100 (1 bunch) job destination lost Collaboration Meeting ALICE-Italia – Cagliari May 4, 2005- 3

  4. Some comments • Problems & issues: • The gLite UI command does not interact correctly with the VOMS. • known problem, fixed but the fix did not get through to the release! (not even 1.1) • Submission to the gLite RB fails with certificates mapped to a SGM (software manager) account (Savannah bug #8616, fixed on friday) • Some problems with the RB (e.g. missing location from status report), being investigated • Not all the “usual” C libraries on the WN – had to ship libg2c.so with AliRoot • DGAS (accounting system) is using these jobs to debug its first deployment • The infrastructure (just after the upgrade to 2.4.0) showed the same toothing problems of last year, e.g.: • Hanging NFSs make software area inaccessible (this is a nasty one – remember the “Black Hole Effect”!) • Communication problems between WN and RB • Problems with environment configuration on WNs • The support responsiveness definitely improved • Problem generally solved within an hour of submitting the ticket Collaboration Meeting ALICE-Italia – Cagliari May 4, 2005- 4

  5. Next steps: the interface • Registering to Alien Catalogue without AliEn • Will probably not be needed at all… • Multi-thread submission (either direct or from AliEn Task Queue) • Efficient use of dedicated RBs • Testing the gLite RB ability to query the AliEn Data Catalogue • The main “new” feature in the gLite RB • Accessing files in a “standard” gLite SE (through DPM/SRM/AliEnSE/xrootd/FiReMan/whatever) • This should be much easier than last year Collaboration Meeting ALICE-Italia – Cagliari May 4, 2005- 5

More Related