1.             
             
                        
                  
TANGO Collaboration
Experience for running a multi-site international software project
Success and failures
June 2010
JM Chaize, ESRF/CERN control workshop

2. JM Chaize, ESRF/CERN control workshop
History
1990 ESRF designed RPC control system based on RPC
Object Oriented in C,
Initial collaboration with CERN (RPC, Widgets…)
1999 decision to redesign it using CORBA
Multi, language, better objects, etc…
Too much work, need to find partners
October 2002 Corba workshop
June 2010
JM Chaize, ESRF/CERN control workshop

3. JM Chaize, ESRF PCAPAC Jefferson Lab 2006
Collaboration
2008
2002
2004
2005
June 2010
JM Chaize, ESRF PCAPAC Jefferson Lab 2006

4. JM Chaize, ESRF/CERN control workshop
Collaboration
6 institutes, around 30 programmers (not full time)
open source Sourceforge project
Workload sharing.
3 “mature” institutes (ESRF, SOLEIL and ELETTRA)
Modernization program
3 institutes in construction phase (ALBA, Petra 3, MAX 4)
2 plenary meetings a year
June 2010
JM Chaize, ESRF/CERN control workshop

5. JM Chaize, ESRF/CERN control workshop
Grenoble (France)
Light source 6 GeV (844m)
40 beamlines
Light for users since 1992
Control system modernization
150 control computers
Linux, Windows, Solaris
VME, PC, CompactPCI, SUN
Tango used for accelerator control
1200 servers running, 5000 devices on 97 hosts
40 beamlines started with TANGO
41 different instances of TANGO
June 2010
JM Chaize, ESRF/CERN control workshop

6. JM Chaize, ESRF/CERN control workshop
Core development C++ API
Java API
class generator
database server
database browser
Control System administration tool
Java ATK
Synoptic editor/animation …
June 2010
JM Chaize, ESRF/CERN control workshop

7. JM Chaize, ESRF/CERN control workshop
Gif sur Yvette (France)
Light Source 2.75 GeV (345m)
23 beamlines
Linac, Booster in operation
Storage ring commissionned,
First beam on beamlines
Tango used for accelerator and beamlines control
15000 devices in operation for the accelerator
First beam on beamines
First institute exclusively based on TANGO
June 2010
JM Chaize, ESRF/CERN control workshop

8. JM Chaize, ESRF/CERN control workshop
Scada interface
History database
Java panels
Industrial I/O classes
Many utility classes
Matlab and labview bindings
Logging system
Etc…
June 2010
JM Chaize, ESRF/CERN control workshop

9. TANGO@elettra Trieste (Italy) Light source 2-2.4 GeV (260m)
Booster Injector
Trieste (Italy)
Light source GeV (260m)
1Gev Linac, no booster
Light for users since 1993
21 beamlines, 1000 users annually
Control system modernization:
PC with Linux
VME, PowerPC, Linux+RTAI
Tango used for accelerator control system upgrade:
140 servers running (RF Master Oscillator Plant, Digital BPM, Fast Local Orbit Feedback…)
Tango is the control system of the new projects:
Booster injector (Commissioning June 2007)
Free Electron Laser (FEL)
June 2010
JM Chaize, ESRF/CERN control workshop

10. JM Chaize, ESRF/CERN control workshop
Database clustering
Web interface
Alarm system
Qt/C++ toolkit (Qtango)
Porting servers on ARM processor
Archive events for History Database
Etc…
June 2010
JM Chaize, ESRF/CERN control workshop

11. TANGO@alba Python server Industrial I/O Abstract classes
Motor control classes
Motor/Counter device pool
New web site
Etc…
Barcelona (Spain)
Light source 3 GeV (268.8 m)
23 straight sections
Emittance = 4.3 nmrad
Starting construction soon
Light for the users: 2010?
Tango will be used for accelerator and beamlines control
June 2010
JM Chaize, ESRF/CERN control workshop

12. Examples of co-development
Libera BPM
server developed at Soleil
ESRF ported TANGO server API
ELETTRA ported the server and embedd it in the controller.
History Database
server developed at Soleil based on polling
Archive event system developed at ESRF
ELETTRA added the Archive events mechanism
June 2010
JM Chaize, ESRF/CERN control workshop

13. Examples of co-development
Database server
Server developed at ESRF
Add multiple servers and clustering by ELETTRA
Java ATK
Core developed by ESRF
Panels developed at SOLEIL/ESRF
And many other cases…
June 2010
JM Chaize, ESRF/CERN control workshop

14. JM Chaize, ESRF/CERN control workshop
What can be improved…
Huge number of device servers developed
Difficult to have an overview
Need to better classify,identify, find…
Better use of abstract interfaces
A lot of different GUI tools
Each institute has his own favourite solution
Java ATK, PythonQT, Qt, ….
Could be integrated in a workbench…
June 2010
JM Chaize, ESRF/CERN control workshop

15. Increasing number of users
TANGO used in several schools and universities
(UK, France, Italy, Germany…)
New users (EMBL, CEA…) Developing servers
TANGO for Petra-3, FRM2, MAX VI
Last collaboration meeting hosted 45 people
11 institutes represented
Some private services companies joining
Need to define new rules for decision making
June 2010
JM Chaize, ESRF/CERN control workshop

16. JM Chaize, ESRF/CERN control workshop
Main difficulties
Different institutions with different culture
Specific needs and constraints
Some traditions and “religions”
Python/Java/C++
Heavy workload for local objectives
Common development not always easy to defend
Development sharing not so easy
Different views, lack of coherence
Different bosses, no overall arbitration
Decisions difficult to impose ….
June 2010
JM Chaize, ESRF/CERN control workshop

17. New collaboration rules
Executive committee defining the strategy
1 coordinator per institute with hierarchical power
Regular cyber meetings
Different working groups by center of interest
History Database
Industrial I/O
Java ATK
Web site
Embedded systems ….
Plenary sessions twice a year
June 2010
JM Chaize, ESRF/CERN control workshop