ZEUS Software
General
The ZEUS software is maintained in a central repository under CVS which resides under AFS at DESY. Information on the basic code management strategy (ZSMSM) can be found here. New releases of the whole software chain appear typically 3-4 times per year. Supported platform as of Apr-2008 is DESY ScientificLinux 3 (SL3). Additionally SL4 will be supported since next software release.
The software is managed by the ZEUS code manager. If you wish to submit new code or changes of code for the ZEUS software repository, please make sure to adhere to the code submission rules and contact the ZEUS code manager and the offline coordinator.
Guidelines for submission to the central constants database
(geometry, alignment, calibration etc) can be found here. A preliminary
documentation for the Constants Management Toolkit is available.
New users may be interested in registration procedures.
Reconstruction Software
The ZEUS reconstruction area is managed by the reconstruction coordinator. The experts for the individual software packages used in the reconstruction can be found here.
Links: Release
notes, Uta's Zephyr page,
ZEUS DDL Report for
Software Release 2007a.1,
Status
page for upcoming release
Data Processing: the ZEUS Reconstruction Factory
The data taken by the ZEUS experiment are processed on a PC farm running Linux as operating system. Reconstruction is performed in a semi-automated way under the ZEUS Reconstruction Factory (ZRF), a framework based on MySQL, PHP4 and Apache with LSF as the underlying batch system. The production system has the flexibility to use also resources of the ZEUS analysis facility (ZARAH) when they are free. After the end of ZEUS data taking period all datasets have been reconstructed and then re-processed with improved calibration constants and reconstruction software. Currently we are preparing for the Grand Reprocessing of the whole HERA-II sample. The goal is to produce uniform, final mini-dst data for the entire HERA-II period.
Links: ZRF, old reconstruction logbook,
ZEUS Analysis Facility (ZARAH)
ZARAH is the central ZEUS data analysis facility. It provides the computing infrastructure & support for batch data analysis ("data mining") and the event data storage facilities of the experiment. There is a special ZARAH homepage.
The present ZARAH PC farm consists of 60 dual-processor nodes, where 20 nodes have 2.6 GHz Opteron CPU on a Tyan motherboard, 20 are based on Intel Xeon 3.06 GHz and 20 nodes have Xeon 2.2 GHz, . The LSF batch system integrates this facility with the reconstruction farm. I/O from & to mass storage relies heavily on the dCache system.
Click here for an overview article of the ZARAH
configuration & experience. Also slides from a comprehensive
talk on operation of ZARAH & other offline activities are
available.
Links: Troubleshooting
ZEUS Analysis
Batch analysis
The recommended framework for analysis is ORANGE.
Other analysis-relevant information can be found in various places: lumi-information, ep_runs list, excluded runs lists, DST bits.
Links: Physics Chairman's Home Page, Analysis Coordinator's Home Page, Physics Group Pages, Run Summaries
Common ntuples
More documentation on using "Common Ntuple" for analysis can be found
here.
There is a also a ZACON documentation web pages describing various tools which can be helfull.
Interactive Analysis
Final analysis of the ultimately relevant information selected from the
MDSTs in batch analysis is performed, usually on n-tuple formats, on
the
workgroup servers interactively, mainly using PAW & ROOT as tools. Most workgroup servers
run Linux nowadays.
For the immediate user environment, DESY standard desktop PCs are the recommended solution. Please refer to more information onPC Support service (only German)
Links: Dynamic VLANs at DESY, Event display
zesLite
zesLite is a toolkit centered around a tag event database. The system has
recently been reimplemented.
The old ZES service based on Objectivity/DB has been
terminated on 15-Oct-2005.
Links: zesLite
documentation
Event Display (ZeVis)
ZEUS uses a client-server event display named ZeVis, which is based on the Root package.
Links: ZeVis Event Display,
Online
Display (Status), Online
Display (Diagnose), Troubleshooting
Monte Carlo
funnel
Since more than 10 years, ZEUS Monte Carlo production, which consists of event generation, detector simulation, trigger simulation and reconstruction, has been performed in a worldwide distributed computing model across many different sites within a framework named funnel. Please see the Funnel home page for details.
MC on grid
November 2004 saw the startup of Grid-based Monte Carlo production for ZEUS, which lead to a considerable increase of capacity. More details on ZEUS Grid.
Miscellaneous
User registration procedure
Various registration forms (IT web pages)
SSH
Access Restrictions
Electronic Meeting Management (ZEMS)
Offline People
Offline coordinator
Janusz Szuba, 2595,92595
Offline members
| Janusz Szuba | ZARAH | 2595 |
| Ewelina Lobodzinska | Reconstruction coordinator (finalized) | 2369 |
| Denis Zotkin | Common ntuples production | 2595 |
| Julia Grebenyuk Dorota Szuba |
Analysis and CN coordinators | 5350 2595 |
| Denis Zotkin | Tag database (zesLite) (finalized) | 2595 |
| Ingo Martens | Computing infrastructure | 2004 |
| Denis Zotkin | Data processing (finalized) | 2595 |
| Janusz Szuba | Code manager | 2595 |
| Kenan Mujkic | Event display |
3159 |
| Andrii Verbytskyi | Grid |
3291 |
| Janusz Malka | Monte Carlo coordinator | 3872 |
| Yury Golubkov | Amadeus code editor | |
| Corinna Catterall | MOZART code editor | |
| Franco Brasolin | Monte Carlo infrastructure | |
| Inna Makarenko | Funnel operator |
Getting Help
Consult list above, in urgent cases use Emergency phone numbers. In case of doubt, contact the offline coordinator.Offline Meetings
Normally, a weekly offline group meeting takes place at DESY on Fridays, 13:30 in bld 1b seminar room 5.
Links: Physics Coordinators' meetings, MVD Offline meetings
Documents
ZEUS Offline Group, ZEUS Central Software and Computing for HERA-II, ZEUS note 01-043T. Haas, M. Kowal, R. Mankel, ZEUS Computing Strategy for the Time After the HERA Luminosity Upgrade, ZEUS note 00-014
A. Fox-Murphy, An OO Tag Database for Physics Analysis at HERA, CHEP 2000 contributed paper
M. Kowal et al., A Linux PC Farm for Physics Analysis in the ZEUS Experiment, CHEP 2000 contributed paper
Links: ZEUS Notes
Talks
K.Wrona, Introduction to ZEUS Offline Computing, PDF version
Summer Students seminar, 2007
K.Wrona, "Monte Carlo Mass Production on the Grid" DESY seminar "Computing in High Energy Physics", Feb 14th 2005
R. Mankel, ZEUS
Reconstruction & Analysis at HERA-II Luminosity, Computing
Seminar DESY 6-Dec-2004
K. Wrona, A Management System
for Electronic Presentations, CHEP03 conference, 24-Mar-2003 (ppt)
K. Wrona, A Root-based
Client-Server Event Display fior ZEUS, CHEP03 conference,
24-Mar-2003 (ppt)
R. Mankel, Offline
Report, ZEUS Collaboration Meeting Mar-2003
B. Straub, Orange
Report, ZEUS Collaboration Meeting Mar-2003
J. Cole, MC
Status Report, ZEUS Collaboration Meeting Mar-2003
R. Mankel, Offline
Report, ZEUS Collaboration Meeting Mar-2003
O. Gutsche, Zevis
Report, ZEUS Collaboration Meeting Mar-2003
J. Cole, MC
Status Report, ZEUS Collaboration Meeting Mar-2003
R. Mankel, Offline
Report, ZEUS Collaboration Meeting 16-Oct-2002
C. Catterall, MC
Status Report, ZEUS Collaboration Meeting 16-Oct-2002
R. Mankel, Offline
& Analysis Summary, ZEUS Collaboration Meeting, London,
25-Jun-2002
J. Cole, MC
Status Report, ZEUS Collaboration Meeting, London, 25-Jun-2002
O. Gutsche, ZeVis
- A New Event Display, ZEUS Collaboration Meeting, London,
25-Jun-2002
R. Mankel, Offline
& Analysis Summary, ZEUS Collaboration Meeting, DESY,
26-Feb-2002
J. Cole, MC
Status Report, ZEUS Collaboration Meeting, DESY, 26-Feb-2002
R. Mankel, ZEUS
Computing Upgrades for HERA-II, Computing Seminar, Hamburg,
5-Nov-2001
R. Mankel, Offline
Report, ZEUS Collaboration Meeting, DESY Hamburg, 16-Oct-2001
J. Cole, MC
Status Report, ZEUS Collaboration Meeting, DESY Hamburg,
16-Oct-2001
Talks
from Offline Parallel Session, ZEUS Collaboration Meeting, DESY
Hamburg, 15-Oct-2001
R. Mankel, Offline
Report, ZEUS Collaboration Meeting, DESY Hamburg, 26-Jun-2001
M. Corradi, MC Status Report, ZEUS Collaboration Meeting, DESY Hamburg,
26-Jun-2001
Talks
from Offline Parallel Session, ZEUS Collaboration Meeting, DESY
Hamburg, 25-Jun-2001
R. Mankel, Offline
Report, ZEUS Collaboration Meeting, DESY Hamburg, 27-Feb-2001 (ps)
M. Corradi, MC
Status Report, ZEUS Collaboration Meeting, DESY Hamburg,
27-Feb-2001
Talks
from Offline Parallel Session, ZEUS Collaboration Meeting, DESY
Hamburg, 26-Feb-2001
U. Fricke, New
ZES with Objectivity 6, ZEUS Weekly Meeting, DESY Hamburg,
22-Jan-2001
R. Mankel, Offline
Report, ZEUS Collaboration Meeting, DESY Hamburg, 24-Oct-2000
M. Corradi, MC
Status Report, ZEUS Collaboration Meeting, DESY Hamburg,
23-Oct-2000
Talks
From Offline Parallel Session, ZEUS Collaboration Meeting,
23-Oct-2000
M. Kowal, K. Wrona, ZARAH
Status Report, ZEUS Collaboration Meeting, Toronto, 26-Jun-2000
R. Mankel, Offline
Report, ZEUS Collaboration Meeting, Toronto, 26-Jun-2000
R. Mankel, Offline
Processing Status & Resource Planning, ZEUS Collaboration
Meeting, Hamburg, 21-Feb-2000
A. Fox-Murphy, An
OO Tag Database for Physics Analysis at HERA, CHEP 2000 talk,
Padova, Feb 2000
M. Kowal et al., A
Linux PC Farm for Physics Analysis in the ZEUS Experiment, CHEP
2000 talk, Padova, Feb 2000
Links: ZES
Talks, Computing Seminar
