Yoon-sun Arm Stimulation Neuron Tutorial Project Compatibility Issue

[huangbj16]

I’ve been learning the Sim4Life software by following the tutorials. It is extremely helpful, but I ran into a problem. I hope I can get some help. Thank you!

I was following the step-by-step Yoon-sun Arm Stimulation Neuron HTML Tutorial provided in the software. I finished the first part EM simulation, but when I ran the second part Neuron simulation, it failed immediately after it started. I’ve attached the project screenshot and log files to help with debugging.
file:///C:/Users/Public/Documents/ZMT/Sim4Life/8.2/Documentation/html/Tutorials/Neuron/YoonSunArmStimulation.html

To make sure it’s not my implementation problem, I also ran the prebuilt Yoon-sun Arm Stimulation tutorial project. Again, the EM simulation finished, but the Neuron simulation failed with the same logs.

I suspect it's a compatibility problem with my laptop, but no clue how to dig deeper. To provide more context, I’m running it on a Alienware M15 Laptop, with AMD Ryzen7 5800H, 16GB memory, and RTX3060 GPU.

screenshot:

log message:
[INFO]: iSolve X, Version 8.2.0 (16876), 64Bit Windows
[INFO]:
[INFO]: Running MPI version 2.0 on 1 process.
[INFO]: Loading all solver modules:
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\EmFdtdSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\EmLfComplexValuedSolvers.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\EmLfRealValuedSolvers.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\EmLfUnstructuredSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\EmModeMatchingSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\FluidSolverSchur.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\FluidSolverSimple.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\GradientCoilSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\NeuronSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\ScalarSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\SonicSolver.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\ThermalSolverDouble.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\ThermalSolverSingle.x.dll'
[INFO]: Loaded 'D:\Program Files\Sim4Life_8.2.0.16876\Solvers\ThermalUnstructuredSolver.x.dll'
[INFO]:
[INFO]:
[INFO]: Simulation 'Neuronal Dynamics' started on 2025-Mar-25 15:41:29
[INFO]:
[INFO]: Installed system RAM visible to this process: 15.9 GB
[INFO]:
[INFO]: Solver type: Neuron
[INFO]: Input file name: D:\2025Winter\MagStim\Sim4Life\20250303_trial_v3_neural.smash_Results\5d8a6b11-c863-4e92-a477-578cdbb6515a_Input.h5
[INFO]: Input file generated by: Sim4Life, Version 8.2.0.16876
[INFO]: Output file name: D:\2025Winter\MagStim\Sim4Life\20250303_trial_v3_neural.smash_Results\5d8a6b11-c863-4e92-a477-578cdbb6515a_Output.h5
[INFO]:
[INFO]: [2025-Mar-25 15:41:30] Checking out license feature 'NEURO_SOLVER', expiring the 1-apr-2026, version 8.2, (1).
[INFO]: Using 8 threads to compute the neurons
[INFO]: Number of neuron simulations: 159
[INFO]: Number of neuron groups: 159
[INFO]: Initialization input files: Current and peak CPU memory usage: 29.6 MB / 29.6 MB (current is 100.0 % of peak)
[INFO]: Computing Neuron Simulations
[INFO]:
[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [1] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [4] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [5] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [0] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [2] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [6] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [7] failed.
[ERROR]: The log file contains:

[ERROR]: Simulation of neuron group 'Neuronal Dynamics' [3] failed.
[ERROR]: The log file contains:

[INFO]: Elapsed time for 'Computing Neuron Simulations' was 00:00:01 wall clock time.
[INFO]: Neuron simulations: Current and peak CPU memory usage: 31.8 MB / 32.1 MB (current is 99.0 % of peak)
[ERROR]: At least one of the simulation groups failed. See messages above.
[INFO]: [2025-Mar-25 15:41:31] Released license feature 'NEURO_SOLVER'.
[INFO]:
[ERROR]: Simulation 'Neuronal Dynamics' failed on 2025-Mar-25 15:41:31
[INFO]: Peak CPU memory usage: 32.1 MB (33701888 Bytes)
[INFO]:
[ERROR]: iSolve framework failed (see previous error messages).

[carbonell]

Are you able to run other NEURON tutorials (the pre-build versions)? If not then this issue could be related to the NEURON installation or version. It is possible that using an older version of the NEURON solver is causing the error you mentioned. Please make sure you have the correct version of NEURON installed in your Sim4Life folder. For instance, as you are using Sim4Life version 8.2.0.16876, you should download NEURON using NEURON_setup_8.2.0.16876.exe.