Trigger Table Improvements past, present and future prospects Kirsten

1
Trigger Table Improvements --
past, present and future prospectsKirsten
Ted, Feb.02, 2006, CDF meeting

• Happy Chinese/Korea New Year! Year of dog

When it comes to trigger, stay low (in rate) ! .
Photo taken by Ted Party _at_Y2Ks mansion,
Jan.29
2
One year of bandwidth improvements

• L1A bandwidth improvements (many heros)
• L2 Pulsar upgrade, followed by PulsarII with
  Filar (from March, 2005)
• SVT AMSRW/HF upgrade (Summer 2005) improved L1A
  bandwidth above 30KHz
• SVT HB is almost there (more improvement!)
• Silicon L1A limit increased from 30KHz to 40KHz
  (Sebastian) (Nov. 2005)
• L2A bandwidth improvements (Markus !)
• EVB upgrade, improved from 370Hz to 800! (Aug.
  2005)
• L3 upgrade, more than double the CPU processing
  power! (on going!)
• XFT upgrade is on going! (crucial to get us to
  300E30)
• CSL/Raw data logger upgrade is coming overall
  throughput to tape from current 20MB/s to
  80MB/s
• Almost to the impossibly ambitious original L1A
  spec,and well past the original L2/L3 rates. --
  Jim Patricks comment on Jan 13, 2006.
• Always keep in mind! Real goal is to improve
  bandwidth at the system level from
• Collision point --gt Detector/L1/L2/L3/csl/tapes/di
  sk/ntuples/users/mtgs/GP. --gt Phys.Rev. editors
  desk!

3
One year of Trigger Table Performance Improvements

• Timeline
• Feb. 2005 3_00_v3 (default highlumi)
• Mar. 2005 3_01_v1 (version for L2 Pulsar
  driving)
• April 2005 3_02_v1 (1st attempt at ROF at L2)
• July 2005 3_04_v1 (really removed ROF at L2)
• Aug. 2005 3_05_v1 (XTRP firmware change, Mt)
• Aug. 2005 3_06_v1 (A Major clean up of tables)
• Aug. 2005 3_07_v1 (1st attempt at unification)
• Jan. 2006 3_09_v1 (1st GUT table in action)
• For details, see TDWG meeting talks between
  June-Sept 2005, and Jan. 2006.

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The goal of GUT table is to get rid of HIGHLUMI
table, to allow most triggers run into higher
luminosity

• The following datasets are not in the highlumi
  table,
• and now they are running at higher luminosity
  in the GUT table
• B_BACKUP
• B_ELECTRON
• B_HADRONIC
• B_MUON
• B_PIPI
• DIFFRACTIVE
• HIGGS_MULTI_JET
• HIGH_PT_BJET
• JET_20_CENTRAL
• JPSIEE
• Z_BB
• About 60 triggers at L2

5
One year (2005) of Trigger Table Performance
with beam
limited by L2A
1st GUT (Grand Unification Table)
3_09 3_07 3_06 3_02
limited by L1A
1st attempt at unification
limited by L1A
Major clean up
Major clean up
10 DT, limited by L1A
default
highlumi
90 100 130 170
200
Luminosity (E30)
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Initial look at GUT 3_09_v1
performance
L1 deadtime
ScenA_UPS enabled
ScenC_CLCM enabled
Z_to_BBbar enabled
Default 3_07
High luminsity store 4590 Taken Jan. 13, 2006

• HIGHLUMI

• Take advantage of
• Silicon L1A limit increased by Sebastian
• L2/SVT/EVB/L3 improvements
• Details see
• TDWG web talks on Jan06 Jan.20th

7
Initial look at GUT 3_09_v1
performance L2

• As expected, GUT 3_09_v1 performance is limited
  by initial L2A rate, 600Hz _at_165E30
• The wall is around 700-800 Hz at higher
  luminosity. Need to control the initial L2A rate
  !

8
MET252JETs
rate
x-sec

L2_CMX6_PT15
Some good triggers gone wild at L2
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Initial look at GUT 3_09_v1
performance
L3CSL output
We are now writing more data to tape

• E-log entry -- Fri Jan 13 175215 The CSL rate
  to disk is higher than previously seen and
• the tape writing rate is 8-16 MB/s (24 MB/s
  maximum rate). It looks as though
• we can likely write data to tape fast enough for
  now, but it will be close.
• Doug Benjamin and Krzysztof Genser
• This is a good problem to have
  .

10
We have learned a great deal fromthe GUT 3_09_v1
Run 210008

• The GUT table performance will be limited by
  initial max L2A (800Hz)
• Just because your triggers are in RunIIb list,
  doesnt mean you can relax!
• Some of them could gone wild at higher
  luminosity
• The extrapolations in your study could have
  limitations
• Some backup triggers could gone really wild as
  well !
• Think harder and study harder during shutdown
• Hope/beg for another new record store before
  shutdown to learn more!
• For details, see TDWG meeting web talk on Jan20,
  2006, or directly
• http//hep.uchicago.edu/thliu/projects/TDWG/TDWG
  _Jan20_06.pdf

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RunIIb Physics Priorities and Trigger Committee


CDFnote 8055

• Lots of good work done by many (led by Luciano) !
• TDWG takes the recommendations very seriously

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RunIIb Physics Priorities and Trigger
Committee-- zoom in view (any familiar
faces?)

• Essences of RunIIb Report
• A list of Most Important Triggers (MIT)
• Specific recommendations on
• threshold changes etc for some MITs
• RunIIb officially starts from this report !

2b or not 2b? no longer the question!
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Is RunIIb for b physics too? -- B groups
trigger plan

• B group is making rapid
• progress on finalizing
• their plan (not covered
• in the RunIIb report)
• --gt Led by Kevin
• CDF note is in progress
• Details see Kevins talk at TDWG meeting on Jan.
  20, 2006
• http//www-cdf.fnal.gov/internal/WebTalks/Archive/
  0601/060120_tdwg/
• 04_060120_tdwg_Kevin_1_B_plan_tdwg.pdf
• Will try our best to implement some of their plan
  before shutdown.

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Goal Setting
300E30

• Spokes ask us to jump,
• we say how high?
• The goal is to reach 300E30 with
• one table, while optimizing the
• middlelow ranges
• Have done reasonably well in
• the past year towards this goal
• Still a long way to go

TDWG
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How to get there from here?-- learn from the past

• Table clean up need to do more
• Prescale away moremore triggers (not in RunIIb
  list) at higherhigher luminosity need to
  do more
• Improve trigger purity need to do MUCH more!
• Optimize middlelow ranges to do more (B
  groups plan)
• Take crucial data for trigger improvement study
  on going
• RunIIb threshold changes on going!
• XFT upgrade eager to see how much improvements !
• Implement a few good new triggers along the way
  
• Learn as much as we can before shutdown on
  going
• Brain-storm on new ideas during shutdown (have a
  workshop?)
• (e.g. see the end of Albertos talk)

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One comment about table cleanup

• Last Aug. we did our first major table clean up,
  in Table 3_06, by removing
• junk triggers or clearly unused triggers.
  that helped us a lot!
• For details see
• http//hep.uchicago.edu/thliu/projects/TDWG/TDWG_
  July0805.pdf
• We still have gt 130 L2 triggers, are ALL of them
  actually really used?
• Estimate 100 physicists actively doing
  analysis (or running CAF jobs?), many of them use
  the same triggers.
• Backup triggers could cause trouble at high
  luminosity and there are
• lots of them.
• Veronica will set up a web page with the list of
  the triggers in the current
• table, please take a look and claim the
  triggers you are really using
• We will do this during the shutdown, and any
  unclaimed triggers will be
• dropped later.

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A slide from last TDWG meeting (July 08), on
Table cleaning

• Our table is 5 years old, designed gt 7 years
  ago.
• Has been used to serve food for gt 600
  physicists
• (lots of them are poor, hungry and hardworking
  young postdoc and students).
• Over years, it has accumulated dust, food
  stain
• it has been burned by high luminosity beam
  quite many times and broken into two pieces
• High Lumi Table Panic
  Table
• It is time to do a clean up, so
  the young people can eat
• healthy/clean
  food.

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It has been a real team effortPhysicsHar
dwareSoftwareOps

• TDWG Heads Kirsten and Ted
• Trigger Table Creation and Testing Coordinator
  Veronica Sorin / Zeynep Gunay
• Technical Support Trigger SPLs Vadim
  Rusu/Greg Feild/Veronique Boisvert
• Trigger
  Software Coordinator Daniel Whiteson
• Trigger
  Database Tom Wright / Donatella Torretta
• XMON Charles
  Plager
• Retired Generals Kevin and Jonathan
  
• RunIIb Committee chaired by Luciano
  
• Trigger Representatives
• Exotics Group Vadim Rusu and Oscar Gonzalez
  Lopez
• QCD Group Mary Convery, Gene Flanagan and
  Mario Campanelli
• Top Group Veronique Boisvert and Ambra
  Gresele
• EWK Group Jiyeon Han
• B Physics Konstantin Anikeev and Simone
  Donati (with Rolf Oldeman)
• Hardware teams Sili SPLs (Sebastian/Ankush/Marc
  el), SVT team(Alberto etc),
• EVB/L3 team
  (Markus), XTRP (Chris Marino)
• Others Chris Neu, Andrew Ivanov, Viktor
  Veszpremi, Bill Badgett, Peter Wilson, Carla
  Pilcher,
• Monica Tecchio, Camille Ginsburg
• Thanks to all physics
  conveners, and ops managers.

19
How long it may take to reach 300E30?-- hard to
predict, but can use data points from last year

• Months taken to improve table
• vs its luminosity range

?
12 9 6 3 0
1 year from now Matches well with machine
schedule
3_09
3_07
3_02
100E30 200E30
300E30
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Will there be an end?

• 3_09 GUT table
• Ultimate ideal goal
• TOE (Table Of Everything)
• Is it possible?
• Probably not!
• But who could stop us
• from trying hard ? at least
• _at_ the year of dog
• (next year is pig. so there
• could be an end after all !)