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We are excited to announce the release of Sim4Life V8.2, designed to enhance your simulation experience. Our latest release is focused on enhanced usability and performance, making advanced simulations more accessible than ever before. Please find more details on the new features of Sim4Life V8.2 here. [image: 1731662563758-s4l_v8-2_news_item.gif] Access it via sim4life.io, sim4life-lite.io, or sim4life.science, or download the latest desktop version from our website. A comprehensive list of Sim4Life V8.2’s new features, improvements, and fixes (web and desktop versions) is provided in our Release Notes. Please send your feedback and suggestions to s4l-support@zmt.swiss.

When the stop button is pushed in the task manager, while a simulation is running, it will generate an event that is equivalent to "enforcing" a "convergence reached" state from the solver perspective. That's why the following log will appear inside the Solver-Log tab WARNING: [...] Simulation end request received. The solvers starts to consider this. Steady state detected at iteration x, remaining time steps are y. Simulation performed z iterations. Elapsed time for 'Time Update' was xx:xx:xx wall clock time.

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: [image: 1742934789540-6afdb897-29bf-4d55-9d3c-b68e14eeae91-error_message.png] 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).