Pythia Week 2024

Name: Pythia Week 2024
Start: 2024-04-29T09:00:00+01:00
End: 2024-05-03T17:00:00+01:00
Location: Mendelssohn Room

29 Apr 2024, 09:00 → 3 May 2024, 17:00 Europe/London

Mendelssohn Room

Martin Wood Complex, Clarendon Laboratory Parks Rd, Oxford OX1 3PU, United Kingdom

Ilkka Helenius (University of Jyväskylä), Peter Skands (Monash University (AU))

Description

Practical Information:

Airports:

The most convenient airports are Heathrow (frequent direct bus service to Oxford, 1.5 hours; stops at T5 and at T2/3; look for "The Airline") and Birmingham (direct train service to Oxford, 1h).
Luton airport is also relatively convenient, with slightly less frequent bus services (look for "National Express").
Gatwick and Stansted are both quite far from Oxford, and take more than 2 hours to get to. Gatwick is accessible via the same bus line as Heathrow (but takes an hour more to get to). Stansted can be reached by "National Express".

Convenient Apps for Local Transport

The Oxford Bus Company App
CityMapper
001 Taxis (Uber does not operate in Oxford)
Trainline (for train tickets to/from Oxford)
TfL Go if you plan to travel to London.

Zoom Link:

https://zoom.us/j/95137229848

Contact

peter.skands@physics.ox.ac.uk

Registration

Participants

Adil Jueid
Christian Gutschow
Enzo Canonero
Gavin Salam
Glen Cowan
Ilkka Helenius
Leif Lönnblad
Melissa van Beekveld
Michal Kreps
Naomi Cooke
Peter Skands
Philip Ilten
Torbjörn Sjöstrand
+2

Monday 29 April
- 09:10 → 09:25
  
  Welcome and Aims 15m
  
  Including discussion of main goals for the week.
  
  Speaker: Peter Skands (Monash University (AU))
  
  PythiaWeek2024.pdf
- 09:25 → 09:50
  
  Beam Remnants & Cosmic Rays - Status and Questions 25m
  
  Speaker: Torbjorn Sjostrand (Lund University (SE))
  
  crPythia.pdf
- 09:50 → 10:15
  
  String Junctions (& Closepacking) - Status and Questions 25m
  
  Speaker: Javira Altmann
  
  pythia24_junctions.pdf
- 10:15 → 10:45
  
  General Discussion of Physics and Issues related to Hadronization 30m
- 10:45 → 11:05
  
  Tea 20m
- 11:05 → 11:30
  
  Angantyr 25m
  
  Speaker: Dr Ilkka Helenius (University of Jyväskylä)
  
  AngantyrUpdate-IH2024.pdf
- 11:30 → 11:55
  
  EIC and Gleipnir - Status and Plans 25m
  
  Speaker: Leif Lönnblad (Lund University (SE))
- 11:55 → 12:20
  
  Nuclear Geometries 25m
  
  Speakers: Christian Bierlich, Christian Bierlich (Lund University (SE))
  
  pythia-week2024.key
- 12:20 → 12:45
  
  General Discussion of Physics and Issues related to Heavy Ions 25m
- 12:45 → 14:00
  
  Lunch in Town 1h 15m
- 14:00 → 15:30
  
  GPU Tutorial 1h 30m
  
  Speakers: Leif Lönnblad (Lund University (SE)), Michal Kreps (University of Warwick (GB)), Philip Ilten (University of Cincinnati (US))
  
  cudaBasics.pdf
  
  Pythia240429.pdf
  
  Pythia tutorial
- 15:30 → 15:45
  
  Tea 15m
- 15:45 → 16:15
  
  Pythia 8.312 30m
  
  Speaker: Philip Ilten (University of Cincinnati (US))
- 16:15 → 16:45
  
  Discussion of Future Roles & Funding Opportunities 30m
- 17:30 → 20:30
  
  Pizza Reception 3h Peter's House
  
  Peter's House
  
  398 Woodstock Road Wolvercote, Oxford OX2 8JW
  
  at 398 Woodstock Road, OX2 8JW. We will leave the department shortly before 5.
Tuesday 30 April
- 09:10 → 09:25
  
  Total and Diffractive Cross Sections 15m
  
  Speaker: Torbjorn Sjostrand (Lund University (SE))
  
  totalSigmas.pdf
- 09:30 → 10:10
  
  Careful discussion of Hadronization variations & general variations, related to #210. 40m
- 10:15 → 10:40
  
  Rivet 4 & Yoda 2 25m
  
  Speaker: Christian Gutschow (UCL (UK))
  
  cg_pythia_dev.pdf
- 10:45 → 11:05
  
  Tea 20m
- 11:05 → 11:45
  
  Errors on Errors 40m
  
  Speakers: Enzo Canonero (University of London (GB)), Glen Cowan (Royal Holloway, University of London)
  
  Uncertain_systematics.pdf
- 12:00 → 12:30
  
  Preliminary Studies 30m
  
  Speaker: Dr Adil Jueid (Institute for Basic Science)
  
  main.pdf
- 12:45 → 14:00
  
  Lunch in Town 1h 15m
- 14:00 → 14:20
  
  Self-Introductions: B. Tuncay & L. Bernardinis (Ongoing Tuning Efforts) 20m
  
  Speakers: Lorenzo Bernardinis (Universita e INFN Trieste (IT)), Baris Tuncay (University of Oxford (GB))
  
  Strangeness_tuning_v2.pdf
- 14:20 → 14:40
  
  MCPLOTS - Update and Plans 20m
  
  Speakers: Natalia Korneeva (Monash University (AU)), Anton Karneyeu (Russian Academy of Sciences (RU))
  
  mcplots.pdf
- 14:45 → 15:30
  Work and Discussions related to Tuning 45m
  - Errors on Errors
  - Tunes as Command Files
  - PDF Updates
  - Needs of different communities: From Forward Physics, to B Decays, to FCC-ee, to Hard and Soft Processes at the LHC, to Heavy Ions, EIC, and Cosmic Rays?
  - Studying and Reducing Correlations among parameters? Refactorizations, Reparametrizations?
  - Tuning and Matching/Merging applications.
  - Status of Autotunes now that both Bellm and Gellersen have left?
  - Tuning and PDFs (and orders of PDFs)
  - ...
  Speakers: Peter Skands (Monash University (AU)), Philip Ilten (University of Cincinnati (US))
  
  2024-04 Pythia workshop.pdf
  
  Tuning 2024.pdf
- 15:30 → 15:45
  
  Tea 15m
- 15:45 → 16:05
  
  Plans for New Pythia Tuning 20m
  
  Speakers: Peter Skands (Monash University (AU)), Stephen Mrenna
- 16:10 → 17:00
  
  Getting to a stage where we can use Reweighting and Professor together 50m
Wednesday 1 May
- 09:10 → 09:40
  
  New C++ Version 30m
  
  Speaker: Philip Ilten (University of Cincinnati (US))
  
  C++ standards
- 09:45 → 10:45
  
  User Interface to Fragmentation: Discussions and Work 1h
- 10:45 → 11:05
  
  Tea 20m
- 11:05 → 12:45
  Discussions and Work 1h 40m
  - Expect continuations from Monday/Tuesday discussions.
- 12:45 → 14:00
  
  Lunch in Town 1h 15m
- 14:00 → 16:00
  Discussions and Work 2h
  - Fast Glauber from Angantyr to Cosmic-Ray modelling.
  - Matching/Merging related issues
  - LHE related issues.
  - Clang format.
  - CERN gitlab vs gitlab.com
- 16:00 → 17:30
  
  Excursion to Oxford Castle & Prison 1h 30m
Thursday 2 May
- 09:10 → 09:50
  
  PanScales: Intro & Experience with Pythia Interfacing 40m
  
  Speaker: Melissa Corona van Beekveld (Nikhef National institute for subatomic physics (NL))
  
  PythiaWeek-april2024.pdf
  
  A place to look at for better handling of dot products (gets you O(epsilon))
  https://gitlab.com/panscales/panscales-0.X/-/blob/main/shower-code/MomentumM2.cc?ref_type=heads#L32
- 09:55 → 10:35
  
  Pythia Contrib (& Tutorial?) 40m
  
  Speaker: Philip Ilten (University of Cincinnati (US))
  
  (1) PYTHIA plugin system
  
  (2) PYTHIA-CONTRIB develop
  
  (3) PYTHIA-CONTRIB install
- 10:45 → 11:05
  
  Tea 20m
- 11:05 → 11:30
  
  Self-Introductions: Ludo Scyboz, Basem El-Menoufi, and Jack Helliwell 25m
- 11:30 → 12:00
  
  PanScales-Pythia Interface: Discussions 30m
- 12:00 → 12:40
  Discussions and Work 40m
  - Numerical accuracy (aiming for Cosmic-Ray energy stability and log tests).Tricks from PanScales: Replacing dot products by cross products, ...
- 12:45 → 14:00
  
  Lunch in Town 1h 15m
- 14:00 → 14:45
  
  MiNNLOPS (& Pythia) 45m
  
  Speaker: Silvia Zanoli (University of Oxford)
  
  PythiaWeek_Zanoli.pdf
- 14:45 → 15:30
  
  Discussions and Work 45m
- 15:30 → 16:00
  
  Tea 30m
- 16:00 → 17:00
  
  Particle Theory Seminar by Ilkka Helenius 1h Simpkins Lee Room (Beecroft Building)
  
  Simpkins Lee Room
  
  Beecroft Building
  
  https://zoom.us/j/98685957349?pwd=Z0ZJUE9Odi9MYmlDSDIvYy8zMDVQQT09
  
  Speakers: Ilkka Helenius (Helsinki Institute of Physics (HIP)-Univ. of Helsinki, Fac. of S), Dr Ilkka Helenius (University of Jyväskylä)
Friday 3 May
- 09:10 → 09:35
  
  Future 25m
  
  Collaboration Roles
  Gitlab.com vs CERN Gitlab?
  
  Speaker: Peter Skands (Monash University (AU))
- 09:35 → 10:15
  
  CR Optimisations & Static Code Analysis 40m
  
  Speakers: Michal Kreps (University of Warwick (GB)), Philip Ilten (University of Cincinnati (US))
  
  colourReconnection.pdf
- 10:15 → 10:45
  Discussion on Optimisation and related issues 30m
  - Further CR Optimisations (and related)?
  - Identifying MPI bottlenecks. E.g., first-interaction pT and b sampling.
  - Systematic Approach to Identifying and Addressing Optimisation Issues?
  - Inclusion of various compute-intensive intializations as command files?
  - Other Issues related to SCA and Optimisations
  - Instruments for Mac (alternative to valgrind)
  - Studying and Reducing Correlations among parameters? Refactorizations, Reparametrizations?
  - Status and follow-ups on tuning
  pythiaTuningProjects.pdf
- 10:45 → 11:05
  
  Tea 20m
- 11:05 → 11:30
  
  EvtGen & Pythia 25m
  
  Speaker: Michal Kreps (University of Warwick (GB))
  
  evtgen_pythia_May2024.pdf
- 11:30 → 11:55
  
  QED in Hadron Decays 25m
  
  Speaker: Peter Skands (Monash University (AU))
- 12:00 → 12:45
  
  Discussion & Work 45m
  
  Including other aspects related to QED / EW physics?
  Including other aspects related to hadron-decay physics?
- 12:45 → 14:00
  
  Lunch in Town 1h 15m
- 14:00 → 17:00
  
  Issue Desk and Informal Follow-Ups 3h
  
  Gitlab.com vs CERN Gitlab?

Pythia Week 2024

Mendelssohn Room

Practical Information:

Airports:

Convenient Apps for Local Transport

Zoom Link:

Peter's House

Simpkins Lee Room

Beecroft Building