CMS: Difference between revisions

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==Goals==
=== UNDER CONSTRUCTION ===
*L-Store plugin for root, so that rootio can read (write?) L-Store files
*This page is for CMS Users interested in using REDDnet - Still under construction, but details will be added soon!
*CMS then uses REDDnet as temporary storage for user analysis (Tier 3 and below)
*Plugins for CMS code have been developed so users can easily access REDDnet:
*Other CMS Applications possible, begin with above.
**Command line tools for file upload and download into REDDnet: LoRS, Lstore
 
**SRM and Phedex: GridFTP plugin
==Current Work in Progress==
**CMSSW: Root plugin
 
*[https://promise.cs.utk.edu/lodn/cgi-bin/lodn_published.cgi?subdir=/cms_reddnet LoDN exnode server]
===Demos at March 2007 OSG Grid Meeting (UC San Diego)===
*We have a small group of Tier 3 users testing submitting CRAB jobs to OSG sites with data on REDDnet.
 
Can use Vladimir's or Dmitri's analysis for all of below.
 
====Interactive Root====
*First upload a file to Depots spread across the WAN, use LORSView to show where and how they go.
*Then read it back in root, show it works.
*Mainly an introduction to the issues.
 
====100 Node ACCRE Run====
*each reads its own file from WAN set of depots.
*show speed versus local copies of file (data tethered analysis).
 
====100 CPU Grid Job====
*similar to ACCRE Run, each job reads its own file from WAN depots.
*demonstrates complete lack of data tether.
 
====To Do To Get Ready====
*Run all of the above many times before actual demo!
*Get LORSview upload working
*Figure out how to submit 100 CPU Grid Job.
*Want to run all 100 ACCRE jobs simultaneously?  Need to work with ACCRE on that...
 
==SRM interface==
*in principle, this is important for CMS usage. 
*Need to get new support person on board with this and up to speed.

Latest revision as of 18:04, 10 April 2008

UNDER CONSTRUCTION

  • This page is for CMS Users interested in using REDDnet - Still under construction, but details will be added soon!
  • Plugins for CMS code have been developed so users can easily access REDDnet:
    • Command line tools for file upload and download into REDDnet: LoRS, Lstore
    • SRM and Phedex: GridFTP plugin
    • CMSSW: Root plugin
  • LoDN exnode server
  • We have a small group of Tier 3 users testing submitting CRAB jobs to OSG sites with data on REDDnet.
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