20240207

REANA tutorial

Elena: 
- went very well
- not that hard with a bit of guidance
- Covered most questions
- Many beginners questions (libraries, Jupyter, …)
- participants still need to see how useful this can be for their analysis
- Form for feedback sent around

Arman
- Many technical problems addressed

Harry
- Side remark: took some ideas to the base infra meeting, and three of these guys (GESIS) who want to use Jupyter attended in the end
- Jupyter hub Base proposal - Harry is reviewing; discussion on this this afternoon (Christiane: PUNCH people were initially contributing, but then Base proposal did not fit their expectations … but if  discussion again now and Jupyter reaching out to us then bind in Muenster and Bonn).
- Success of REANA tutorial because we addressed some of the relevant main construction sites of PUNCH (HPC etc.)
- With experience on distributed user base etc. - we can contribute to multicloud etc.
- These “foreigners” were impressed
- 26 attendees, 24 registered - quite distributed
- Idea of a hackathon mentioned as well; there also would need to use workflow language

Arman
- next steps: collect use cases discussed, make some nice dashboard with examples, find out what works in our environment
- milestone: Mount CERN CVMFS batch system - allows to bring in HPC use cases —> broaden applications in PUNCH; also develop SLURM and HTCondor plugins
- Topic for hackathon: various flavours of workflow languages into REANA (not only Snakemake)

Construction sites to be addressed - and hackathons etc.  (Harry)
Harry:
- Common AAI for REANA and S/C4P for the user —> Benoit: done (authorisation for S4P through REANA authentication etc.) 
- DRP and registry
==> idea: take 1-2 examples that require C4P, S4P and run through REANA and explore setup —> hackathon inviting those people who have more involved use cases and push them to the infrastructure
- Benoit: had a hackathon at the more basic level in mind - to trigger communication and startup work
- Matthias: TLS has postdoc to use REANA for his workflows - he is working on familiarising himself with REANA, devil in the detail ==> we need to demonstrate that you can run useful things, and to identify where we can make things simpler.  Also differences between communities. 
- Thomas - so one basic user thing to broaden our user base and one expert hackathon to go further? 
- Harry: Need a year before we invite the normal user - there are too many things to be addressed before … 
==> first develop tools in general and educate the data stewards
- Harry: constitute kind of Sprechstunde?
- Manuel: two kinds of hackathons
	- users - get their workflows ready; not with too many people - separately with each group? Schools etc later? Do this second (starting with Matthias / TLS etc.): the LOFAR [name of workflow]
	- Developers and stewards come together: do this first! In AIP - interplay REANA and C/S4P: Putting together the building blocks of the building blocks - connection REANA and PUNCH infrastructure - how to operate (including S4P, token handling, AAI, shuffling data around); 6-10 people, at least 2 full days lunch to lunch; first half of April - Harry to take the lead