2022 03 28 Open NEST Developer Video Conference

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Agenda

1. Welcome

   • Announcements

2. Review of NEST User Mailing List

3. Project team round

4. In-depth discussion

   • Inclusion of NEST-GPU by Golosio et al.

Announcements

• NEST 3.3 is available for testing, DOI will be attached soon.
• Register for the NEST Conference 2022
• Look out for NEST related talks and workshops at the CNS*2022

Mailing list

• https://nest-simulator.org/mailinglist

Project team round

Here we discuss topics that need broader attention, for example questions that came up but are outside a single project's scope, larger planned changes/PRs that affect all teams or pending work that is blocked by external factors.

1. Models / NESTML
   • refactored under the hood, which enables new platform target: neuromorphic, gpu, direct python, …
     • working on support for compartmental neurons
   • work on delayed differential equations
   • deprecated models PR #2356 required improve of propagator classes, much improved code
2. NEST GPU
   • see in-depth
3. PyNEST
   • many small things
4. NEST Desktop
   • NEST-Desktop NESTML kick off last week to enable NESTML coding in the teaching front-end
5. Kernel
   • #2359 will change creation of spatial nodes
   • tackling parallel threads performance
6. Installation
   • looked into MacOS build in new CI test scheme
   • changes in cmake flags
   • conda package workaround found with -O0 for two files
     • problem caused by conda string replacements in the compiled binary, required for relocations
     • relative paths can be found, but are system dependent
   • found issue with flags -Dwith-optimize and -Dwith-debug: #2340
7. Infrastructure
   • full MacOS build merged
   • maintenance of model repositories? – create collection in NEST documentation (?)
     • CI possibilities available for model
   • discussion of service accounts
8. Documentation
   • many things in, reviews needed
     • NESTML docs #2283
     • nest kernel comments #2113
9. EBRAINS
   • nothing further to report
10. (Feature) Automated Testing
    • nothing to report (close feature project)
11. (Feature) Extension Module System
    • most discussions in kernel group (keep feature project, remove from meeting)

In-depth discussion

• Moved golosio/neurongpu branch nestgpu to nest/nest-gpu, currently not public even though original repo is public
• add note to nest/nest-gpu, that CI and things are being updated.