K. De UTA Grid Workshop April 2002 ATLAS Pre-packaged Kaushik De University of Texas at Arlington.

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Presentation transcript:

K. De UTA Grid Workshop April 2002 ATLAS Pre-packaged Kaushik De University of Texas at Arlington

K. De UTA Grid Workshop April 2002 Need for a Testbed Application  Need ATLAS application for a real test of Grid computing model  Should be easy to deploy on thousands of machines  Should be useful for physicists  Should test virtual data model  Explored various packages currently available  Explored making our own package

K. De UTA Grid Workshop April 2002 CERNLib Package  Necessary for analysis or builds  ATLAS Kit for GRID Testbed  Recommends RPM package for Cernlib /common/RPMS/cern i386.rpm  289 MB file - easy to install  but does not work!  have to set environment variables by hand or use cernlib i386.rpm found at linux/dist/redhat/6.2/i386/RedHat/RPMS/cernlib  Or install 6 separate packages from comps=/redhat/6.2/i386/RedHat/base/comps&g roup=cernlib  Or get from CERN or BNL cell afs/cern.ch/asis/RPMS/i386_redhat61/CERN.LIB_*

K. De UTA Grid Workshop April 2002 ATLAS_1.3.0_kit.tar.gzATLAS_1.3.0_kit.tar.gz  Advertised as ATLAS application for generic GRID use  Not a binary release!  Contains SRT, CLHEP and libraries  “main Atlas Applications : DiceMain, DicePytMain, AtreconMain”  Tried under RH 7.1  Failed miserably  SRT cannot even determine machine type  Gave up after debugging at least a dozen problems and still fail to build  Tried under RH 6.1  Only produced DiceMain executable  Other two builds crashed horribly  Gave up after many hours of debugging

K. De UTA Grid Workshop April 2002 Other Possibilites  EDG Release  Withdrawn in anticipation of version release!  Many activities in various WP groups - we need to identify person from our group to monitor them so that we do not duplicate effort  Julian Phillips release  Attempted to put in isolated cage  Reduced lib list from ~290 to <100  Works under RH had to get one more library  My package  Closed cage, cleaned up  Wrote Globus scripts  Here’s a demo!

K. De UTA Grid Workshop April 2002 What Next!  Job parameter handling  Condor issues  Choose best node to submit job  File cataloguing  Discussion tomorrow