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<!-- keep this as a security measure: * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup,Main.LCGAdminGroup * Set ALLOWTOPICRENAME = Main.TWikiAdminGroup,Main.LCGAdminGroup #uncomment this if you want the page only be viewable by the internal people #* Set ALLOWTOPICVIEW = Main.TWikiAdminGroup,Main.LCGAdminGroup --> ---+ CCRC08 ---++ 2. 6. - 5. 6. 2008 Analysis Latency Tests Exercises consist of subscribing to a data set and running a sample analysis job with CRAB over all its files. Monday and Tuesday CSCS had a number of problems due to a middleware upgrade of the CE and nodes which despite expectations caused a lot of jobs to abort. But I was able to download a dataset from PIC at a speed of ~90MB/s. Tuesday evening and night was ok, but allowing only one cycle for the following data set: Dataset name: =/Njet_5j_400_5600-alpgen/CMSSW_1_6_7-CSA07-1206675842/RECO from T1_PIC= | Time | Time delta | Comment | | 15:00 | *0* | Dataset subscription approved | | 15:25 | 0:25 | download beginning | | 20:45 | 5:45 | dataset completely on site (281 Files from T1_ES_PIC, 1.4TB, 0 Errors, avg. 69.1 MB/s) | | 21:40 | 6:40 | DBS still only shows 41 files at CSCS | | 21:43 | *6:43* | DBS shows whole dataset to be on site | | 21:45 | *6:45* | crab -submit | | 21:49 | 6:49 | all 29 Jobs running at T2_CH_CSCS | | 04:34 | *13:34* | last job finished (no Errors) | Wednesday was again bad luck, when FZK's network had severe problems, causing all transfers for =/WW_incl/CMSSW_1_6_7-CSA07-1196178448/RECO= to fail. FZK recovered sometime in the afternoon, but the CSCS !PhEDEx download agent got stuck because of blocking of a =glite-transfer-query= and a =glite-transfer-submit= request, which I only noticed on Thursday morning. !PhEDEx transfers from FZK began to trickle in by 13:30h, but the cluster is now completely filled with user jobs, which will add considerable latency to the eventual CRAB run. -- Main.DerekFeichtinger - 04 Jun 2008
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Topic revision: r3 - 2008-06-05
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DerekFeichtinger
LCGTier2
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