ATLAS Computing @ RZG

Status

Stefan Kluth, 25.07.05

Operation: hardware

Repeated disk failures in fileservers

about 25% now (Maxtor 7Y250M)

Suppliers actively investigate the problem

Maxtor engineer diagnosed overheating

Arranged to test new Maxtor disks in one system at RZG

Maxtor promised shipment of 12 new disks but we are still waiting

Still plan to increase disk capacity this year

Operation: hardware

Additional RAM deliverd

56 x 1GB IBM modules

limited tender (six companies)

11.424,00 Euro with update GmbH (delivered used modules)

Installation

28 nodes with 4 GB (v01 to v14, w01 to w14)

Operation: SGE

Batch queue management

reminder: functional shares 10/30/30/30 for users/ATLAS/MAGIC/GRID

please use resource requirements for RAM and CPU time

qsub -l v_hmem=2G

qsub -l h_cpu=1:00:00

SGE selects correct queues

queue changes will be transparent to users

LCG @ MPI/RZG

still almost ready

“we” (FZK, RZG) are fixing small bugs

expect tests with MAGIC

ATLAS tests after MAGIC works

Still plan to be on Grid for FZK school and DC3

Summary

Follow-up of hard disk failures ongoing

Additional 56 GB RAM installed

Please use resource requirements

Still only slow progress with LCG

2005-01-28T10:35:58