Overview

From Etp
Jump to: navigation, search

Overview

LMU users can get direct access to the LMU-LRZ Tier2 cluster using automatically created personal login accounts.

Usage advice:

  • LRZ cluster runs 64 bit Suse Enterprise Linux 11, SP3 (June 2016), for most practical purposes it is similar but not identical to Scientific Linux 6.
    • watch out when setting up software (compiler, root, athena, python)
  • One has interactive access to two general purpose login nodes (lxlogin1.lrz.de, lxlogin2.lrz.de, lxlogin3.lrz.de, ...). Do not run heavy/long applications on these nodes.
    • The LCG part of the Linux cluster consists of some 1000 CPU cores and 1500 TB storage.
    • It can only be used via
      • batch job submission from the login nodes
        • use cases: MC generation, local ntuple analysis, other CPU intensive work not needing AOD/dESD input
      • Grid submission from everywhere
        • recommended for jobs needing AOD, dESD or other ATLAS data input
      • Proof sessions initiated on the login nodes.
  • Home directory space is scarce, do not store large data/output files there.