DIRAC

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==== 23rd DIRAC Working Group Meeting 2020, virtual via ZOOM, June 3rd - 6th  =====

==== Location ====

ZOOM. To participate you must register in advance on:
[[https://syddanskuni.zoom.us/meeting/register/u50sdeupqD4sGNHLHtmMfvzebSn-vBeqA2CU | Registration for Dirac2020 zoom]] 

After your registration has been approved, you will receive a confirmation email containing information about how to join the meeting.
==== For new people ====

The DIRAC meeting is a family reunion for DIRAC developers and
DIRAC friends. Dirac users are very welcome to participate, it is a nice opportunity to meet the people behind
the DIRAC code. **There is no registration fee but you need to register on the link above to get access to
the online meeting over zoom.**

We will discuss science, but a significant part of the program
is reserved to discuss the future of the DIRAC code, programming,
code maintenance, release planning, as well as for programming task groups.

The meeting program is self-organised, simply add talks and
discussion points to the program. (Send an e-mail to Hans Jørgen using hjj at sdu.dk if you do not have editing permission to this page.)
==== Participants (please add yourself) ====

  - Hans Jørgen Aa. Jensen, Odense
  - Trond Saue, Toulouse
  - Andre Gomes, Lille
  - Xiang Yuan, Lille
  - Loic Halbert, Lille (partially)
  - Gabriel Cesar Pereira, Lille 
  - Wilken Misael, Lille 
  - Richard Opoku, Lille
  - Lucas Visscher, Amsterdam
  - Agustín Aucar, Corrientes
  - Elke Fasshauer, Aarhus
  - Paul Bagus, UNT Texas
  - Johann Pototschnig, Amsterdam
  - Ayaki Sunaga, Osaka
  - Gosia Olejniczak, Warsaw
  - Pi Haase, Groningen
  - Erik Hedegård, Lund (on-and-off due to student projects)
  - Miroslav Iliaš, Banská Bystrica
  - Stan Papadopoulos, Mülheim an der Ruhr
  - Martin van Horn, Amsterdam
  - Avijit Shee, Ann Arbor
  - Radovan Bast, Tromsø
  - Malaya K. Nayak, Mumbai
  - Eugene Gvozdetsky, Amsterdam
  - Ephraim Eliav, Tel Aviv
  - Alexander Oleynechenko, Moscow
  - Andrey Zaitsevsky, Moscow
  - Chima Chibueze, Amsterdam
  - Juan J. Aucar, Corrientes
  - Yuly Chamorro Mena, Groningen
  - Andy Zapata, Corrientes
----

==== Work tasks (please add tasks) ====

  * Go through issue list on dirac-gitlab
  * Discuss public release of Dirac in 2020, when and how
  * Codata (move to 2018 version)
  * Add missing information to DFCOEF (or possibly a new restart file)


==== Possible items for the meeting, to be scheduled later ====

  * Testing and Merging of EXACORR
  * 


----

// Please sign up for your presentation (one or possibly two, if different topics) in one of the free 30 min time slots below, you can also add it here if you will let the organizers determine your time slot. Plan you presentation to 20 min, leaving 7 min for discussion and 3 min for changing speaker.//

"Technical talks" refer to talks about development tools, "how to" etc.

  * (name, title, anytime on Thursday)

----

==== Wednesday June 3 ====

=== The state of affairs, mostly for active Dirac developers, but all please join for the Opening and Introduction ! ===

  * 13:30 -- 13:45 -- Opening, discussion of meeting program (Hans Jørgen)
  * 13:45 -- 14:15 -- Introduction round (everybody)
  * 14:15 -- 14:45 -- Overview of current and planned DIRAC developments by node leaders
  * 14:45 -- 15:00 -- Task group formation, planning of collaborative work.
  * 15:00 -- 15:30 -- Coffee/tea/mate break
=== Science with DIRAC and technical talks ===

  * 15:30 -- 16:00 -- Johann Pototschnig, Lucas Visscher: The ExaCorr module.
  * 16:00 -- 16:30 -- Dmitry Lyakh: The ExaTensor library.
  * 16:30 -- 17:00 -- Andre Gomes, Loic Halbert : Developments for ground and excited states, first applications with exacorr (and some EOM-CC results with RELCCSD)

==== Thursday June 4 ====

* **09:30** -- 12:00 Collaborative work (issue fixing, discussions of new methods in Dirac, documentation, tutorials, joint papers, etc.) **NOTE: new start time.**

=== Lunch  ===

  * 12:00 -- 13:30

=== Science with DIRAC and technical talks ===

  * 13:30 -- 14:00 -- Update on task groups/issues
  * 14:00 -- 14:30 -- Codata and DIRAC
  * 14:30 -- 15:00 -- 
  * 15:00 -- 15:30 -- Coffee/tea/mate break
  * 15:30 -- 16:00 -- Trond Saue - Beyond the electric dipole approximation: on the convergence of multipole expansions
  * 16:00 -- 16:30 -- Maen Salman - Charge conjugation symmetry in the finite basis approximation of the Dirac equation
  * 16:30 -- 17:00 -- Ayaki Sunaga - Relativistic correlated calculations with effective QED potentials 

==== Friday June 5 ====

  * **09:30** -- 12:00 Collaborative work.

=== Lunch  ===

  * 12:00 -- 13:30

=== Technical issues (discussion sessions) & Modules of interest to DIRAC development ===

  * 13:30 -- 14:00 -- Update on task groups/issues
  * 14:00 -- 14:30 -- Radovan: transition to LGPL and branch cleanup (as basis for collaborative work for Sat June 6)
  * 14:30 -- 15:00 -- Discussion about Dirac2020 release.
  * 15:00 -- 15:30 -- Coffee/tea/mate break
  * 15:30 -- 16:00 -- Bruno Senjean: The ROSE (Reduction of Orbital Space Extent) code
  * 16:00 -- 16:30 -- Dmitry Lyakh: CC with automated generation of diagrams
  * 16:30 -- 17:00 -- Andrei Zaitsevskii, Alexander Oleynichenko: Fock Space Relativistic Coupled Clusters for Molecular Excited States. Problems and Workarounds, Relativistic Fock Space Coupled Cluster beyond CCSD: Theory and Implementation

==== Saturday June 6 ====

  * 09:00 -- 17:00 Collaborative work (joint papers, joint programming efforts).