28th DIRAC Working Group Meeting 2025, SDU, Odense, DK
June 3rd - June 6th (Arrival Monday June 2nd)
Location
FKF Synergy meeting room (not the same room as 2024! location: Ø10-506-2)
To get the SDU map link to the Synergy meeting room, type FKF in the search field at this link: FKF Synergy meeting room
For DIRAC developers and invited guests, who cannot be present in person:
(registration link for zoom follows a week before the meeting)
For new people
The DIRAC meeting is a family reunion for DIRAC developers and
DIRAC friends. It is a nice opportunity to meet the people behind
the DIRAC code. There is no registration fee but for organization
purposes please add yourself to the participant list below (send an e-mail to Hans Jørgen using hjj at sdu.dk if you do not have editing permission to this page).
Most people will stay at the campground (more info below). The cabins are very
good comfort, not expensive, and it's fun to be there. Book them well in advance.
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.
How to get to Odense
Typically you will i) fly to Copenhagen and then take the train or ii) fly to Billund and then take bus to Vejle plus train Vejle-Odense.
From Odense train station you can take bus 35 (in the right direction!) or share cab to the
DCU-Camping Odense.
If you arrive to Odense by train on a regular train ticket (expensive: 369 DKK), then the bus from the railway station to the camp ground (or any other destination in Odense) is included in the train ticket.
If you buy your ticket CPH → Odense St. in advance (e.g. a month) on https://www.dsb.dk/en, then you can buy a “DSB Orange ticket” (non-refundable) or a “DSB Orange Fri ticket” (refundable until 30 min before departure) for from 94 DKK or 157 DKK. They are only valid for a specific train, in contrast to the regular tickets which are valid for any train that day. Local buses are not included in the orange tickets. The closer you come to the travel day, the more expensive the orange tickets become.
Lodging
Make your cabin reservation at
DCU-Camping Odense.
The cabins can accommodate 3-4 people so organize with others.
Use the dirac-developers mailing list.
A downtown hotel at the railway station: CABINN Odense Hotel.
You can find other hotels from around 500 DKK per night by searching google for “hotels Odense” and some BBs to less than 500 DKK. Note that hotels might be cheaper via their own web site than on hotels.com etc.
Local transport in Odense
Revised April 2024 by Hans Jørgen.
Note that the local bus lines have changed since the tram line was opened, so do not look for the bus numbers you used previously!
Both the cheapest and the simplest is to use the new “Odense NU” mobile tickets: 15 kr for 26+, 10 kr if you are 25 or younger. They are valid for one hour for both buses and the tram, as long as you stay inside Odense Kommune. You can read the QR code at the tram stops to buy the ticket, or you can download and use the app “Rejsebillet”. Or on
https://www.odenseletbane.dk/english.
In the “Rejsebillet” app (after having added a credit card and switched to English), choose “Special Tickets” and scroll for “Odense NOW”. If you filter “Sold by Fynbus”, it is easier to find it, because there are many special tickets!!!
Use
https://rejseplanen.dk to find your best connection, for example to the campground. The railway station is “Odense St.” and the campground is “DCU-Odense City Camp”.
Even easier: Download the “Rejseplanen” app and use that. I use it every time I travel in DK!
Railway station - university: use Odense Letbane (tram, light rail). There is no direct bus connection Railway Station - university any more. Use QR code shown at tram stops or buy with the app “Rejsebillet”.
A map of all bus lines in Odense can be found
here
Participants (please add yourself)
Please note arrival and departure if you will not participate the whole time.
Hans Jørgen Aa. Jensen, Odense
Trond Saue, Toulouse
Ayaki Sunaga, Budapest
Dávid Ferenc, Toulouse
Andre Gomes, Lille
Agustín Aucar, Groningen
Lucas Visscher, Amsterdam
Jan Brandejs, Toulouse
Radovan Bast, Tromsø
Gosia Olejniczak, Warsaw
Erik D. Hedegård, Odense
Ernst D. Larsson, Odense
Lena Nguyen, Odense
Work tasks (please add tasks)
Go through issues list
Update user documentation – there are still quite a few references to DFCOEF file …
Can keyword .OPERATOR also refer to pre-defined operators ?
Update developer documentation on release preparation
How to deal with setting the runtime environment correctly (openmp, gpu use)
Use subtree instead of submodule (suggestion hjaaj)
New testboard.org ? (cf. dirac-developers mail from Radovan 10.Mar.2025)
Get KR-MCSCF working in C1 symmetry …
Checkpoint file: should we distinguish 4c vs 2c. MCSCF orbitals. Atomic vs. linear symmetry
unified tensor type tests – towards merge – probably needs 2 sessions as things develop
x2c multithreading bug
Possible items for the meeting, to be scheduled later
- Possibility to use predefined operators under .OPERATOR
- Jupyter notebooks for demonstration and python bindings in general
Prologue: Monday June 2
Tuesday June 3
The state of affairs
09:00 – 09:15 Opening, discussion of meeting program (Hans Jørgen)
09:15 – 09:30 Introduction round (everybody)
09:30 – 11:30 Overview of current and planned DIRAC developments by node leaders
11:30 – 12:00 Task group formation
Lunch
Discussions - Focus on ExaCorr
13:00 – 13.30 Jupyter notebooks for demonstration and python bindings in general
-
14:30 – 15.15 Desired features on top of TAPP: symmetry, denominate, rank reduction, …
15:15 – 15:45 Development planning (who does what)
Workgroup Session
Wednesday June 4
Science with DIRAC
09:00 – 09:30 Adsorption energies calculations of Hg,Cn,Fl and Pb attached to a Selenium surface – Miro Ilias (Zoom talk)
09:30 – 10:00 Towards rigorous QED corrections in diatomic molecules – Dávid Ferenc
10:00 – 11:00 Coffee break and group picture
11:00 – 11:30 Linear dependency – Trond Saue
11:30 – 12:00 Fermi-type nuclear model – Ayaki Sunaga
Lunch
Discussion session
DIRAC release
Board game night
19:30
Papas Papbar (we can grab some food in the city center before)
Thursday June 5
Science with DIRAC
09:00 – 09:30 Gitlab as host
09:30 – 10:00 Modernizing our cmake setup
10:00 – 10:30 Coffee break
10:30 – 11:00 TAPP – Jan Brandejs
11:00 – 11:30 Response properties with Coupled Cluster – Andre Gomes
11:00 – 12:00 Collaborative work (or more talks)
Lunch
Technical issues (discussion sessions)
Collaborative work
Meeting dinner
Friday June 6 (bonus)
Collaborative session (joint papers, joint programming efforts).
09:00 – 09:30 Checkpoint files
09:30 – 10:00
10:00 – 10:30 Coffee break
10:30 – 11:00
11:00 – 11:30
11:00 – 12:00 Collaborative work (or more talks)