SnowMass2021

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====== CompF2: Theoretical Calculations and Simulation ======

**<color #ed1c24>CompF2 activities have paused due to the COVID-19 pandemic. The new timeline is explained [[https://snowmass21.org/announcements|here]].</color>**

Before the decision to pause, we (the conveners) were working on a <color #ed1c24>proposal for a survey to collect information to transform requirements of near-future and far-future physics programs into S&C effort and R&D</color>. Given that the new timeline plans for the first draft of the topical group reports to be delivered AFTER the white papers submission deadline, and not before as was the case previous to the pause, <color #ed1c24>we have decided to morph the survey into a list of questions we will be encouraging authors to address in their papers</color>. We are working on this list  of questions right now and welcome comments and suggestions on a first draft available [[https://fermicloud-my.sharepoint.com/:b:/g/personal/daniel_services_fnal_gov/Ee1V3PcsxyhJvuKDThdjJl4BS3ipU8oTJXyF1iyRKNwMYA|here]]. 

We will also be consulting domain contact people to discuss ideas about how to hit the road running immediately after the pause. Of course, everyone is welcome to contact us directly on this or any other matter.
===== Working Group Co-Conveners =====
^Name ^Institution ^email |
| Peter Boyle|BNL|pboyle@bnl.gov|
|Daniel Elvira|FNAL|daniel@fnal.gov, before 9/2021|
|Kevin Pedro|FNAL|pedrok@fnal.gov, after 9/2021|
|Ji Qiang|LBL|jqiang@lbl.gov|

===== Sub-domains and Contact People  =====

For practical purposes,  group activities are divided into six subdomains: cosmic calculations, accelerator modeling, beam and detector simulation, physics generators, perturbative calculations, and lattice QCD. During the first CompF2, volunteers were identify to serve as contact people for each sub-domain. These volunteers are responsible for the self-organization of each sub-domain and for establishing a process to contribute a section of the CompF2 report.

^Sub-domain ^Contact People ^email |
|Cosmic Calculations| Salman Habib (ANL), Zarija Lukic (LBL) | habib@anl.gov, zarija@lbl.gov|
|Accelerator Simulation| Axel Huebl (LBL), Cho-Kuen Ng (SLAC), David Sagan (Cornell), Eric Stern (FNAL), Jean-Luc Vay (LBL), Ji Qiang (LBL) |axelhuebl@lbl.gov, cho@slac.stanford.edu, david. sagan@cornell.edu, egstern@fnal.gov, jlvay@lbl.gov, jqiang@lbl.gov|
|Beam and Detector Simulation|Krzysztof Genser (FNAL), Vincent Pascuzzi (LBL)| genser@fnal.gov, vrpascuzzi@lbl.gov|
|Physics Generators|Hugh Gallagher (Tufts), Philip Ilten (Cincinatti), Stefan Höche (FNAL), Steve Mrenna (FNAL), Steven Gardiner (FNAL), Taylor Childers (ANL) | hugh.gallabher@tufts.edu, iltenpj@ucmail.uc.edu, shoeche@fnal.gov, mrenna@fnal.gov, gardiner@fnal.gov, jchilders@anl.gov |
|Perturbative Calculations| Andreas von Manteuffel (Michigan State) |vmante@msu.edu|
|Lattice QCD| Andreas Kronfeld (FNAL)| ask@fnal.gov|

===== How to Participate beyond submitting LOIs and White Papers  =====

CompF2 conveners and sub-domain contact people can be reached via email (see above). 

**Meetings:** CompF2 meets on Fridays 1-3 pm (Pacific), 2-4 pm (Central), 3-5 (Easter) upon necessity. Links to past and future meetings are available [[https://indico.fnal.gov/category/1107|here]].  

**Communication:** on meetings, deadlines, group activity is done via email.  Please subscribe to: snowmass-compf02-theorycalcsim@listserv.fnal.gov ([[https://listserv.fnal.gov/users.asp#subscribe%20to%20list|Instructions]])

Each sub-domain is free to establish its own means of communication. Some have their own websites and mailing lists:
  * Accelerator Simulation
    *  [[https://snowmass-compf2-accbeammodel.github.io/|Website]]
    * [[AccBeamModelSnowmass21@lbl.gov|Mailing List]]
  * Detector simulation
    * [[SNOWMASS-COMPF02-DETBEAMLNSIM@fnal.gov|Mailing List]]. ([[https://listserv.fnal.gov/users.asp#subscribe%20to%20list|Instructions to subscribe]])

<color #ed1c24>**Deadline Reminders** </color>

The Computational Frontier has established a modified [[https://snowmass21.org/computational/start|time schedule]] which is consistent with a participative process allowing white paper drafts to be used as input to the first frontier report draft. CompF2 has also established [[https://indico.fnal.gov/event/46442/contributions/201964/attachments/137363/171186/CF2-November13-news-v2.pdf|internal deadlines]] consistent with the former. 

===== Initial charge from CompF conveners =====
  * Remark: Reason to separate “experimental algorithm parallelization” from “theoretical calculations and simulations”
    * See explanation above in the “Experimental Algorithm Parallelization” working group
  * Functional areas
    * Theoretical calculations (high-order perturbative calculations and lattice field theory)
    * Detector simulations (Geant, … )
    * Particle accelerator modelings (https://snowmass-compf2-accbeammodel.github.io/)
    * Event generators
    * Cosmic frontier simulations
    * Utilization of CPU, accelerator hardware and what comes next in 5-10 years
  * Mandate
    * Describe theoretical calculations, detector simulations, accelerator modelings, event generators that are or will be used by the stakeholders
    * What are the processing resource needed to execute theoretical calculations and simulations
    * What is the technology evolution of processing resources?
      * Coordinate with theoretical calculations and simulations working group
    * How will stakeholders be able to design and write physics algorithms for these processing resources?
      * Coordinate with theoretical calculations and simulations working group
    * How can coding standards and performance standards be used?
      * Coordinate with theoretical calculations and simulations working group, and Collaboration and Ecosystem working group
    * How are the solutions used by the community embedded derived from solutions from industry/other science domains
      * Connections with ML (accelerating calculations, more efficient phase space sampling, lattice QCD, …)

===== Submitted LOI =====
Here is the list of submitted LOIs to this topical group.  First index before "/"  corresponds to the primary frontier used for the submission.
 {{url>https://www.snowmass21.org/docs/files/list.php?frontier=CompF2  border 100%,4000px}}