- NEST Users - NEST Initiative Mail

PhD scholarship within Data Science and Computational Neuroscience at the Norwegian University of Life Sciences (NMBU)
by Kristin Tøndel 15 May '19

15 May '19

The Faculty of Science and Technology at the Norwegian University of Life Sciences (NMBU) has a vacant 3-year PhD-position related to Data Science and Computational Neuroscience: https://www.jobbnorge.no/en/available-jobs/job/168816/phd-scholarship-withi… Please share with your network. Best regards, Kristin Tøndel

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Open NEST Developer Video Conference Monday 13 May 2019 11.30 CET (UTC+2)
by Dennis Terhorst 13 May '19

13 May '19

Dear NEST Developers! I would like to invite you to our next bi-weekly Open NEST Developer Video Conference today Monday 13 May, 11.30-12.30 CET (UTC+2). See below for information about how to log into the meeting. The agenda for this meeting is also available online https://github.com/nest/nest-simulator/wiki/2019-05-13-Open-NEST-Developer-… 1. Welcome 2. NEST Initiative web services 3. Review of NEST User Mailing List <https://www.nest-simulator.org/mailinglist/postorius/lists/users.nest-simul…> 4. Review of open Github Pull Request <https://github.com/nest/nest-simulator/pulls> 5. Review of open Github Issues <https://github.com/nest/nest-simulator/issues> See you soon! best, Dennis Terhorst ------------------ Log-in information ------------------ We use a virtual conference room provided by DFN (Deutsches Forschungsnetz). You can use the web client to connect. We however encourage everyone to use a headset for better audio quality or even a proper video conferencing system (see below) or software when available. *Web client* * Visit https://conf.dfn.de/webapp * Enter your name and allow your browser to use camera and microphone * Click green video-call button to open the call panel * In the "Search to call" box at the top right enter *97938800* and connect * The conference does not need a PIN to join, just click *join* and you're in. In case you see a dfnconf logo and the phrase "Auf den Meetingveranstalter warten", just be patient, the meeting host needs to join first (a voice will tell you). *VC system/software* How to log in with a video conferencing system, depends on you VC system or software. - Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or 194.95.240.2##97938800 - Using the SIP protocol:97938800@vc.dfn.de - By telephone: +49-30-200-97938800 For those who do not have a video conference system or suitable software, Polycom provides a pretty good free app for iOS and Android, so you can join from your tablet (Polycom RealPresence Mobile, available from AppStore/PlayStore). Note that firewalls may interfere with videoconferencing in various and sometimes confusing ways. For more technical information on logging in from various VC systems, please see http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4 -- Dipl.-Phys. Dennis Terhorst Coordinator Software Development Institute of Neuroscience and Medicine (INM-6) Computational and Systems Neuroscience & Theoretical Neuroscience, Institute for Advanced Simulation (IAS-6) Jülich Research Centre, Member of the Helmholz Association and JARA 52425 Jülich, Germany Building 15.22 Room 4004 Phone +49 2461 61-85062 Fax +49 2461 61- 9460 d.terhorst(a)fz-juelich.de

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Nest Neuron Modelling - Tonic Neuron Input and Synaptic Weight Normalization
by Benedikt Feldotto 08 May '19

08 May '19

Dear all, I am wondering about two specific neuron characteristics to be modelled in Nest. Since I did not really find documentation I want to ask about those features here: 1) Are there any implementations for tonic neuron input, that means an additional Neuron input channel that mulitplies with all synaptic inputs? 2) Can synaptic weights be normalized, in particular keeping the sum of all inputs of a single neuron equal to 1? On top, information on having those features modelled in PyNN would be a plus. Thank you very much in advance for any hints where to look, possible solutions, or developer support on how to implement these features! Best Regards, Benedikt

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NEST Dockerfile
by Itaru Kitayama 06 May '19

06 May '19

Hello, I'm just getting started again on using Docker multi-arch for building AArch64 NEST binaries, following this instruction: https://engineering.docker.com/2019/04/multi-arch-images/ Has anyone had a chance to create a handy Dockerfile for building NEST? Could you share it via this mailing list? Thanks, Itaru.

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NEST Conference 2019 / Registration Deadline 15 May / Extended Poster Deadline 15 May
by Hans Ekkehard Plesser 06 May '19

06 May '19

Dear Colleagues! We are looking forward to an exciting NEST Conference 2019 at NMBU, Ås, Norway on 24-25 June 2019 with talks covering a wide range of topics from simulation technology to large-scale network simulations as shown below. Please register at https://www.nest-initiative.org/conference by Wednesday, 15 May 2019 We still have a few slots for conference posters available, so you are still welcome to submit your poster until 15 May. Please see the conference website for instructions. We are looking forward to seeing you in Ås in June! Hans Ekkehard Plesser, Susanne Kunkel & Dennis Terhorst NEST Conference 2019 Talks (only presenting author shown) • GeNN: GPU-enhanced neural networks (James Knight) • Communication sparsity in distributed Spiking Neural Network Simulations to improve scalability (Carlos Fernandez-Musoles) • Sleep-like slow oscillations induce hierarchical memory association and synaptic homeostasis in thalamo-cortical simulations (Cristiano Capone) • Implementation of a Frequency-Based Hebbian STDP in NEST (Alberto Antonietti) • Spike Timing Model of Visual Motion Perception and Decision Making with Reinforcement Learning in NEST (Petia Koprinkova-Hristova) • What’s new in the NEST user-level documentation (Jessica Mitchell) • ICEI/Fenix: HPC and Cloud infrastructure for computational neuroscientists (Jochen Eppler) • Construction and characterization of a detailed model of mouse primary visual cortex (Stefan Mihalas) • Large-scale simulation of a spiking neural network model consisting of cortex, thalamus, cerebellum and basal ganglia on K computer (Jun Igarashi) • Simulations of a multiscale olivocerebellar spiking neural network in NEST: a case study (Alice Geminiani) • A NEST CPG for pythonic motor control: Servomander (Harry Howard) • NEST desktop: A web-based GUI for NEST simulator (Sebastian Spreizer) • Tools for the Visual Analysis of Simulation Datasets (Óscar David Robles) • Neural Network Simulation Code for Extreme Scale Hybrid Systems (Kristina Kapanova) • NEST performance profiling (Susanne Kunkel) -- Prof. Dr. Hans Ekkehard Plesser Head, Data Science Section Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway Phone +47 6723 1560 Email hans.ekkehard.plesser(a)nmbu.no Home http://arken.nmbu.no/~plesser

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NEST Conference 2019 / Registration Deadline 15 May / Extended Poster Deadline 15 May
by Hans Ekkehard Plesser 06 May '19

06 May '19

Dear Colleagues! We are looking forward to an exciting NEST Conference 2019 at NMBU, Ås, Norway on 24-25 June 2019 with talks covering a wide range of topics from simulation technology to large-scale network simulations as shown below. Please register at https://www.nest-initiative.org/conference by Wednesday, 15 May 2019 We still have a few slots for conference posters available, so you are still welcome to submit your poster until 15 May. Please see the conference website for instructions. We are looking forward to seeing you in Ås in June! Hans Ekkehard Plesser, Susanne Kunkel & Dennis Terhorst NEST Conference 2019 Talks (only presenting author shown) • GeNN: GPU-enhanced neural networks (James Knight) • Communication sparsity in distributed Spiking Neural Network Simulations to improve scalability (Carlos Fernandez-Musoles) • Sleep-like slow oscillations induce hierarchical memory association and synaptic homeostasis in thalamo-cortical simulations (Cristiano Capone) • Implementation of a Frequency-Based Hebbian STDP in NEST (Alberto Antonietti) • Spike Timing Model of Visual Motion Perception and Decision Making with Reinforcement Learning in NEST (Petia Koprinkova-Hristova) • What’s new in the NEST user-level documentation (Jessica Mitchell) • ICEI/Fenix: HPC and Cloud infrastructure for computational neuroscientists (Jochen Eppler) • Construction and characterization of a detailed model of mouse primary visual cortex (Stefan Mihalas) • Large-scale simulation of a spiking neural network model consisting of cortex, thalamus, cerebellum and basal ganglia on K computer (Jun Igarashi) • Simulations of a multiscale olivocerebellar spiking neural network in NEST: a case study (Alice Geminiani) • A NEST CPG for pythonic motor control: Servomander (Harry Howard) • NEST desktop: A web-based GUI for NEST simulator (Sebastian Spreizer) • Tools for the Visual Analysis of Simulation Datasets (Óscar David Robles) • Neural Network Simulation Code for Extreme Scale Hybrid Systems (Kristina Kapanova) • NEST performance profiling (Susanne Kunkel) -- Prof. Dr. Hans Ekkehard Plesser Head, Data Science Section Faculty of Science and Technology Norwegian University of Life Sciences PO Box 5003, 1432 Aas, Norway Phone +47 6723 1560 Email hans.ekkehard.plesser(a)nmbu.no Home http://arken.nmbu.no/~plesser

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Exception handling in NEST
by Itaru Kitayama 02 May '19

02 May '19

Hi, Am I able to safely comment out all those exception handling codes provided they're provided for the defensive purposes? I ask because I am trying to insert offloading directives into the NEST code base wherever I can. Thanks, Itaru.

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Open NEST Developer Video Conference Monday 29 April 2019 11.30 CET (UTC+2)
by Dennis Terhorst 29 Apr '19

29 Apr '19

Dear NEST Developers! I would like to invite you to our next bi-weekly Open NEST Developer Video Conference today Monday 29 April, 11.30-12.30 CET (UTC+2). See below for information about how to log into the meeting. The agenda for this meeting is also available online https://github.com/nest/nest-simulator/wiki/2019-04-29-Open-NEST-Developer-… 1. Welcome 2. Review of NEST User Mailing List <https://www.nest-simulator.org/mailinglist/postorius/lists/users.nest-simul…> 3. Review of open Github Pull Request <https://github.com/nest/nest-simulator/pulls> 4. Review of open Github Issues <https://github.com/nest/nest-simulator/issues> See you soon! best, Dennis Terhorst ------------------ Log-in information ------------------ We use a virtual conference room provided by DFN (Deutsches Forschungsnetz). You can use the web client to connect. We however encourage everyone to use a headset for better audio quality or even a proper video conferencing system (see below) or software when available. *Web client* * Visit https://conf.dfn.de/webapp * Enter your name and allow your browser to use camera and microphone * Click green video-call button to open the call panel * In the "Search to call" box at the top right enter *97938800* and connect * The conference does not need a PIN to join, just click *join* and you're in. In case you see a dfnconf logo and the phrase "Auf den Meetingveranstalter warten", just be patient, the meeting host needs to join first (a voice will tell you). *VC system/software* How to log in with a video conferencing system, depends on you VC system or software. - Using the H.323 protocol (eg Polycom): vc.dfn.net##97938800 or 194.95.240.2##97938800 - Using the SIP protocol:97938800@vc.dfn.de - By telephone: +49-30-200-97938800 For those who do not have a video conference system or suitable software, Polycom provides a pretty good free app for iOS and Android, so you can join from your tablet (Polycom RealPresence Mobile, available from AppStore/PlayStore). Note that firewalls may interfere with videoconferencing in various and sometimes confusing ways. For more technical information on logging in from various VC systems, please see http://vcc.zih.tu-dresden.de/index.php?linkid=1.1.3.4 -- Dipl.-Phys. Dennis Terhorst Coordinator Software Development Institute of Neuroscience and Medicine (INM-6) Computational and Systems Neuroscience & Theoretical Neuroscience, Institute for Advanced Simulation (IAS-6) Jülich Research Centre, Member of the Helmholz Association and JARA 52425 Jülich, Germany Building 15.22 Room 4004 Phone +49 2461 61-85062 Fax +49 2461 61- 9460 d.terhorst(a)fz-juelich.de

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Network build phase questions
by Itaru Kitayama 19 Apr '19

19 Apr '19

Hi all, I'm wondering whether the vtable lookup connect function and random number generation costs during the network build phase are fully investigated and understood in the past. I ask because I've observed the phase is, while it is a simulation preparation, takes up to 60% of wall clock time of the entire simulation. Thanks, Itaru.

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Use of another RNG
by Itaru Kitayama 19 Apr '19

19 Apr '19

> > Hi, > Fujitsu offers its own implementation of RNG, so I'm wondering if I can > use it as a drop-in replacement of the NEST RNG? >

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