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2/R-014 (CERN)
Description
diracx developments meeting
Zoom: BiLD
https://cern.zoom.us/j/62504856418?pwd=TU1kb01SOFFpSDBJeWVBdU9qemVXQT09
Meeting ID: 62504856418
Passcode: 12345678
BiLD
BiLDX – 28/09/2023
At CERN: Federico, Christopher, Christophe, Vladimir, Alexandre
On Zoom: Bertrand, Cedric, Hideki, Andrei, Lorenzo, Simon F, Daniela, Simon M, Luisa, Igor, Ueda, Xiaomei
Apologies:
Follow-up from previous meetings
- Last BildX 4 weeks ago (Aug 31st): https://indico.cern.ch/event/1311075/
- pres by Simon about CWL. Well received, with several comments
- question is how to go from here?
- DiracX hackathon on 4th/5th September: https://indico.cern.ch/event/1304626/
- 10 developers attended (new: Luisa+Natthan).
- Not many discussions, mostly “head down and code”. Progress in many aspects though.
- We also now have a stub of DiracX extension
- Realizing one by one all fixes that needs to be done to DIRAC first (not only refactoring).
- so, several PRs for DIRAC too
Specific topics
CWL
- Simon M We still need this “JDL thing” for describing resources (might not be called JDL)
- JDL equivalent in pydantic (JobModel)
- Andrei Discussions during the hackathon if CWL could be used for production request description, but probably not. It has to be seen if dynamic resolution of input files is a possibility for the language.
- Luisa will investigate further
- In general: the first version of DiracX will still use JDLs (or will anyway still need to understand them).
WebApp
- Alexandre presented a prototype for DiracX Web (the presentation, which includes a link to a video showing the Web in action) is attached to the agenda. The prototype is based on some well known and widely used technologies (NextJS, React, TypeScript, Material UI).
- Andrei we need to carefully choose these technologies as we’ll depend on them for many years now
- Bertrand I see nothing wrong with what was chosen
- Alexandre + Christopher they are widely used and nowadays kind of “obvious” choices
- Federico this should be presented in 3 weeks at the workshop: if there are no objections in the next 10 days, then we’ll go with this tech stack
- Federico the end developer should just need to know how to add/modify a page/app.
- Chris^2 adding one could be well be an hackathon exercise – only candidate for now is the user profile page
- Federico we should also show a diracx-web extension
- https://github.com/DIRACGrid/diracx-web has been created.
- Andrei we need to carefully choose these technologies as we’ll depend on them for many years now
DiracX
- Chris^2 For both DiracX and DiracX-charts we are actively working for having a demo (by the workshop) through which jobs can be submitted – this includes ongoing work for the sandbox.
- There’s also a lot of groud work being done
- Added support for OpenSearch DBs
Discussions https://github.com/DIRACGrid/diracx/discussions
- Many of the discussions that are addressing design choices should be relaunched now
Issues https://github.com/DIRACGrid/diracx/issues
*
PR discussed https://github.com/DIRACGrid/diracx/pulls
*
DiracX-charts
Issues https://github.com/DIRACGrid/diracx-charts/issues
*
PR discussed https://github.com/DIRACGrid/diracx-charts/pulls
*
Next steps
- Next DiracX hackathon will be during the workshop (19th Oct)
- Next BildX Oct 26th
AOB
Simon Mazenoux ends his contract this week. He has been with us (LHCb, as a DiracGrid developer) for, in total, around 12 months, and made several excellent contributions. Big thanks to him, and good luck for the future. It has been a pleasure to work with him.
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