2023 06 05 Open NEST Developer Video Conference

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Agenda

1. Welcome
   • Announcement: REGISTER FOR THE 🎉 NEST Conference 2023 🎉
2. Review of NEST User Mailing List
3. Project team round
4. In-depth discussion
   • t.b.a.

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
   • new prototype implementation for gap-junctions being tested by user
   • testing numerical correctness NESTML vs. NEST models: one test case not possible iaf_exp: diverges quickly, update loop uses GSL with changing step-size, NESTML implements own choice of step-size (https://github.com/nest/nest-simulator/issues/2822)
2. NEST GPU
   • working on paper
   • implemented hpc_benchmark and see same neuronal behaviour
     • build on CPU then offload to GPU, currently leads to pretty long build times already with e.g. 32 MPI processes, needs reactoring.
   • need to look into unifying MPI communication between NEST and NEST GPU
3. PyNEST
   • no report
4. NEST Desktop
   • no report
5. Kernel
   • no report
6. Installation
   • nothing to report, mainly cleanup
7. Infrastructure
   • no report
8. Documentation
   • minor changes #2820 #2814
9. EBRAINS
   • discussed ipen ticket on clustered connectivity
   • EBRAINS 23.06 will have code-freeze end of this month, prepare NEST 3.5-rc soon

In-depth discussion

• hackathon topics added to wiki page.