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Published January 5, 2021 | Version 4.4.0
Software Open

genn-team/genn: GeNN 4.4.0

Authors/Creators

  • 1. University of Sussex
  • 2. @Cyanapse
  • 3. Mercateo
  • 4. Purdue University
  • 5. EnixHub
  • 6. Institut de la Vision
  • 7. IRCN, UTokyo
  • 8. Herr

Description

Release Notes for GeNN v4.4.0 (PyGeNN 0.4.4)

This release adds a number of significant new features to GeNN and expands the documentation to cover using GeNN from Python with PyGeNN. It also includes a number of bug fixes that have been identified since the 4.3.3 release.

User Side Changes
  1. Improved documentation covering PyGeNN now available from https://genn-team.github.io/genn/
  2. New system for efficiently recording spikes from multiple timesteps into GPU memory (#372).
  3. Connectivity can now be initialised using column-wise as well as row-wise sparse connectivity initialisation snippets (#374).
  4. Support for 'kernel-based' connectivity, allowing efficient support for connectivity such as convolutions (#373).
  5. Improved access to spike times from weight update models - previous spike times can now be accessed via $(prev_sT_pre) and $(prev_sT_post) (#376).
  6. Added support for accessing spike-like-event times from weight update models via $(seT_pre) and $(prev_seT_pre) variables (#380)
  7. Added support for continuous as well as spike-driven dynamics for pre and postsynaptic weight update model variables (#377).
  8. Added experimental OpenCL backend - there are still issues outstanding but any feedback would be much appreciated (#340).
  9. Improved supression of irrelevant NVCC warnings when optimizing block sizes (#361).
  10. Added support for SM 8.0 and 8.6 architectures to CUDA backend (#361).
  11. Number of presynaptic and postsynaptic neurons are now available via $(num_pre) and $(num_post) in all connectivity initialisation and procedural connectivity kernels (#384)
Bug fixes:
  1. Fixed support for CUDA 8 and older (#361).
  2. Replaced deprecated __linux macro with __linux__ making GeNN compatible with compiler on POWER9 Linux (#363).
  3. Fixed bug where the initialisation of neuron groups which are identical apart from one needing an RNG could be incorrectly merged (#387).

Files

genn-team/genn-4.4.0.zip

Files (1.9 MB)

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Additional details

Related works

Is supplement to
https://github.com/genn-team/genn/tree/4.4.0 (URL)