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Back to: [BABAR] [Computing] [Online | Meetings] [OEP HyperNews] [DataFlow] [Calibration] [Prompt Reco] [Level 3]

BABAR Online Event Processing

This page is frozen. A new one is under development for March 2002.

Please see the active projects list in the mean time.

OEP meetings are now biweekly, in the phase of 2002.3.6.


"Online Event Processing" (OEP) is a subsystem of the BABAR online system. Its responsibilities begin with the reception of complete events delivered by the Event Builder component of the DataFlow system, and encompass the operation of the Level 3 trigger algorithm, event data quality assurance, and other actions of the online system dealing with complete events, short of their complete reconstruction.

The Level 3 trigger itself is being developed by a separate group within the Trigger organization.

Finally, the OEP subsystem must ensure that desired events are logged and passed on to the Prompt Reconstruction (PR) subsystem. It is this subsystem which will implement the BABAR requirement that complete reconstruction of all acquired events must be done in near-real time.

The OEP subsystem will also have the function of providing the framework for those online calibration activities which require the services of the IR-2 UNIX farm. These will include the final stages of data processing for subsystem electronics, pulser, and source calibrations, as well as applications requiring especially rapid response or data volumes exceeding the 100 Hz logging rate limit. Additional information on these issues is available through the Online Calibration home page.


Contents: [TOP] [Phone meetings] [Documentation] [Software release info] [Detector subsystems] [Discussions] [Related links] [The OEP group]

Online phone meetings and other OEP dates

OEP-focus online phone meetings are on a new schedule, beginning 2000.01.12: weekly at 16:00, or immediately following the daily operations meeting if it ends later than that, with the SLAC end in the IR-2 Cornelius conference room. Details are available on the online phone meetings Web page.

All OEP subsystem contacts should make every effort to attend each meeting.

8 March 2000

Next Phone Meeting: 1 March 2000


23 February 2000

16 February 2000: no meeting (BaBar collaboration meeting week)

9 February 2000

2 February 2000

26 January 2000

19 January 2000

First operational experience from 2000 run, next steps

12 January 2000

"Monitoring readiness for data-taking"

15 December 1999

1 December 1999

17 November 1999

3 November 1999

20 October 1999: no meeting (collaboration meeting week)

6 October 1999

22 September 1999: no meeting (Padova physics workshop week)

8 September 1999

Large File Support in OEP and the online

25 August 1999

Automated histogram monitoring - bin-by-bin comparisons

11 August 1999 @ 08:30

Automated monitoring status

28 July 1999 @ 08:30

Fast Monitoring: status and plans

14 July 1999 @ 08:30

5 May 1999 @ 08:30

28 April 1999 @ 15:30

21 April 1999 @ 08:30

14 April 1999 @ 15:30

7 April 1999

24 March 1999

10 March 1999: meeting cancelled

24 February 1999: no meeting (collaboration meeting week)

10 February 1999

27 January 1999

13 January 1999

16 December 1998

2 December 1998

18 November 1998

"Running in IR-2"

4 November 1998

(meeting cancelled)

21 October 1998

7 October 1998

"Proceeding with integration - event building and beyond"

29 September 1998: Provisional offline release for early OEP integration

23 September 1998

"Readiness for 29 September integration milestone"

16 September 1998

(Not in the normal biweekly slot - rescheduled from 9 September)

"Integration status"

26 August 1998

"Progress toward full functionality"

12 August 1998 - meeting cancelled due to conflict with Level 3 Trigger / OEP integration workshop

30 July 1998 general online meeting

29 July 1998 - meeting cancelled

16 July 1998 OEP mini-plenary

(at 13-17 July collaboration meeting)

1 July 1998

"Subsystems' status and near-term requirements"

17 June 1998

3 June 1998

20 May 1998 - meeting cancelled

6 May 1998

22 April 1998

8 April 1998

"Running with the DataFlow FSM simulator"

25 March 1998

"Monitoring and histogramming requirements"

11 March 1998

3 March 1998 - Online mini-plenary at SLAC collaboration meeting

25 February 1998

11 February 1998

28 January 1998

14 January 1998

"TC-to-Digi, Digi-to-TC"

17 December 1997

"Subsystem Fast Monitoring requirements"

3 December 1997

OEP-related sessions at 17-20 November collaboration meeting

OEP status update

  • OepFramework now works under Solaris. Check out SmfFramework V00-00-04 and OepFramework V00-00-04 into your test release and build...

5 November 1997

Wednesday 22 October 1997

"OEP software status and presentation"

13-14 October 1997: Online Farm workshop at Caltech

6 October 1997

"OEP Framework, Module, and data model status"

15 September 1997

"Status report and introduction to the Distributed Histogrammer"

28 August 1997

"Introduction to Online Event Processing"


General documentation and background material

OEP

Tagged Containers


Core OEP Software Release Information

Packages:


Detector Subsystems' OEP-related information

HyperNews discussions

Additional related Web pages

Older Documents


October 1996 PDRR/CDR

Documents for the 15-17 October 1996 online Preliminary Design Requirements and Conceptual Design review:

(These will be frozen in their as-presented state for future reference.)

Oldest Items (predating July 1996 Dresden OEP/PR subdivision)

  • Draft Online Farm Requirements Document (9pp PostScript - now available in A4 format)
  • Draft Online Farm Conceptual Design Figure (physical) (1p PostScript)
  • Draft Online Farm Conceptual Design Figure (process) (1p PostScript)

  • Online Event Processing Group

    Gregory P. Dubois-Felsmann (coordinator), Caltech (gpdf@hep.caltech.edu)

    Subsystem OEP Contacts


    This page maintained by Gregory P. Dubois-Felsmann.
    Last modified: Wed Mar 6 17:13:50 PST 2002