Issues

• vext needs node-like container behavior

  enhancement
  neuronsimulator/nrn#3904 · Filter by author nrnhines opened on Oct 17, 2026
  

• use_exp_pow_precision(1): internal exp calls in KSChan, AlphaSynapse and hoc's interpreter bypass it, and log is not covered, so Linux and macOS still differ

  neuronsimulator/nrn#3897 · Filter by author anun333 opened on Oct 15, 2026

• idraw not working

  neuronsimulator/nrn#3891 · Filter by author neuroman314 opened on Oct 9, 2026
  4

• Replace Crout LU decomposition with Eigen

  enhancementgood for beginnersnmodl
  neuronsimulator/nrn#3881 · Filter by author alkino opened on Oct 5, 2026

• Dependabot security PRs are duplicating the CI lock

  neuronsimulator/nrn#3874 · Filter by author nrnhines opened on Sep 23, 2026
  1

  

• neuronapi: two correctness problems in nrn_segment_diam_get/set (endpoint node resolution, missing 3d propagation)

  neuronsimulator/nrn#3863 · Filter by author ec1dev opened on Aug 26, 2026

• the _sec_db cache can go stale

  bug
  neuronsimulator/nrn#3846 · Filter by author mgeplf opened on Aug 14, 2026
  2

• NEURON 9.0.1 Windows installation fails with Python installed in C:\Program Files

  bug
  neuronsimulator/nrn#3825 · Filter by author carlashworth opened on Jul 23, 2026

• RAII or other better memory management for rxd grids

  rxd
  neuronsimulator/nrn#3819 · Filter by author ramcdougal opened on Jul 7, 2026
  2

• NEURON 9.0.2 patch release

  release
  neuronsimulator/nrn#3816 · Filter by author nrnhines opened on Jul 6, 2026
  2

• CoreNEURON: segfault in sonata_record_node_data with large LFP reports (5924 cells × 1000 electrodes)

  bug
  neuronsimulator/nrn#3811 · Filter by author cattabiani opened on Jul 1, 2026
  

• neuron nightly maintenance

  question
  neuronsimulator/nrn#3804 · Filter by author cattabiani opened on Jun 23, 2026
  11

• Iterating through a segment with no mechanisms segfaults

  bugcheck-if-still-true
  neuronsimulator/nrn#3793 · Filter by author ramcdougal opened on Jun 14, 2026 · Release v9.1
  2

• Error handling for insert

  check-if-still-trueenhancement
  neuronsimulator/nrn#3792 · Filter by author ramcdougal opened on Jun 14, 2026 · Release v9.1

• Point processes should have a .code property

  enhancement
  neuronsimulator/nrn#3789 · Filter by author ramcdougal opened on Jun 12, 2026 · Release v9.1

• black formatting locally can differ from CI formatting

  neuronsimulator/nrn#3782 · Filter by author nrnhines opened on Jun 8, 2026
  1

• Allow external dependencies with find_package

  enhancement
  neuronsimulator/nrn#3770 · Filter by author minrk opened on May 15, 2026

• MechanismStandard.set refers to non-existant example in .out

  documentation
  neuronsimulator/nrn#3757 · Filter by author ramcdougal opened on Apr 28, 2026

• [docs] Applicability of METHOD cnexp

  neuronsimulator/nrn#3749 · Filter by author bgmeulem opened on Apr 24, 2026
  5

• RxDException exists but not RxDWarning

  rxd
  neuronsimulator/nrn#3722 · Filter by author ramcdougal opened on Feb 23, 2026
  

• SDK for Neuron- Linux, Mac and Windows

  enhancement
  neuronsimulator/nrn#3715 · Filter by author bpancras opened on Feb 9, 2026
  1

• Rewrite nrnivmodl in Python

  enhancement
  neuronsimulator/nrn#3712 · Filter by author D-McDougall opened on Feb 3, 2026
  2

• $DYLD_LIBRARY_PATH may be cleared unexpectedly

  enhancement
  neuronsimulator/nrn#3694 · Filter by author jchen6727 opened on Jan 8, 2026

• release/8.2 problem with aliases in LinearCircuit builder

  neuronsimulator/nrn#3688 · Filter by author nrnhines opened on Dec 24, 2025
  1

• Add GPU CI

  CIgpu
  neuronsimulator/nrn#3684 · Filter by author JCGoran opened on Dec 10, 2025