(r1) T3News201411171512 < CmsTier3

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*CMS Tier-3 News Item*

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The T3 admins have deployed [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs]], the standard technology used in the CMS Grid to transparently and efficiently distribute each CMSSW releases around the CMS Grid; on each =t3wn*= and =t3ui*= servers the T3 users will find the new directory [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs/cms.cern.ch]] that offers all the CMSSW releases that they might need, both compiled for SL5 and SL6.

By introducing [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs]] *the T3 admins are also going to STOP to manually deploy any CMSSW release* in =/swshare/cms= since that activity got useless now; a T3 user can still request to install a CMSSW release in =/swshare/cms=, but a such request must to be motivated, e.g. the user needs a CMSSW feature that's missing in the equivalent version installed in [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs/cms.cern.ch]]

%BLUE%We request all the T3 users to read our [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs]] doc, try [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs]] both *interactively* and as *batch jobs*, and proactively report to the T3 users mailing list any error: without a negative feedback we'll permanently switch all the =t3wn*= and =t3ui*= servers to use *by default* [[HowToWorkInCmsEnv#Setting_up_the_CMS_environme_AN1][/cvmfs]] on Fri 21-11-2014 at 16:00%ENDCOLOR%
 
As a final remark, all the existing directories in =/swshare/cms= will be *preserved*.
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T3NewsForm
Title	/cvmfs/cms.cern.ch will replace /swshare/cms on Fri 21-11-2014 at 16:00
Summary	/cvmfs is the standard technology used in the CMS Grid to distribute each CMSSW releases around the world.
User	FabioMartinelli
Date	17. 11. 2014