-------------------------------------------------------------------- -------------------------------------------------------------------- Sim4Life V9.2 Release Notes (Desktop) -------------------------------------------------------------------- -------------------------------------------------------------------- Release Date: 9.12.2025 Sim4Life V9.2 is the latest version of our simulation platform for computational life science research, device design, and optimization, as well as safety and electromagnetic compliance evaluations. Key features of the new release include: - Advanced, third-generation anatomical modeling with AI-powered tools that generate solver-ready models directly from MRI/CT scans. - New Broadband Skin Model enabling absorbed power density evaluation for regulatory compliance and device safety assessments across the 10-110 GHz frequency range. - New Deep Brain Stimulation (DBS) / Stereoelectroencephalography (sEEG) electrode generator tool supporting streamlined model creation for neurostimulation applications. - Upgraded ViP models (Duke, Ella, Fats, Billie, Thelonious, and Yoon-sun), now with more realistic articulation geometries, also in extreme postures. This document summarizes the features, modules, enhancements, known bugs, and other important issues for this release. For additional functionalities available in the Sim4Life V9.2 web version, please refer to https://sim4life.swiss/release-history. -------------------------------------------------------------------- TABLE OF CONTENTS -------------------------------------------------------------------- 1. Installation Requirements 2. Supported OS 3. New Features & Enhancements 3.1. Modeling 3.2. Simulation 3.3. Analysis 3.4. ViP & ViZoo 4. List of Main Bugs (Selection) Fixed Since Last Release 5. Known Issues -------------------------------------------------------------------- -------------------------------------------------------------------- 1. Installation Requirements -------------------------------------------------------------------- - Administrator rights are required during the installation process. - NVIDIA graphics card, with support for OpenGL versions higher than v3.3. -------------------------------------------------------------------- 2. Supported OS -------------------------------------------------------------------- - Windows 11 (64 bit, x64) - Windows 10 (64 bit, x64 - EOL) Acceleware libraries: - Deprecated library 11.1.13 Erbil: Uses CUDA 11.1 Supports: Kepler (K20) to Ampere (40 and RTX) architectures CUDA computing capability: sm_35 up to sm_86 - Current library 11.4.1 Funafuti: Uses CUDA 12.2 Supports: Maxwell 5.2 and 5.3 up to Ada Lovelace L40, RTX Ada Lovelace and Hopper H100 (No longer supports Kepler) CUDA computing capability: sm_50 up to sm_90 CUDA library: - Uses CUDA 12.8 Supports: Kepler (K20) to Ada Lovelace/Hopper CUDA compute capability: sm_35 up to sm_9 Please note that only NVIDIA GPUs with CUDA Compute Capability 2.0 or higher are supported by the Sim4Life AXE solver. The Sim4Life CUDA solver support starts from CUDA 5.0. For the CUDA-based solvers (CUDA P-EM-FDTD, P-THERMAL, P-ACOUSTICS), Sim4Life supports NVIDIA GPU models equipped with CUDA compute capability 5.0 (6.0 for P-THERMAL)up to 12.0, and requires device drivers that support the CUDA toolkit 11.0 and above. Note that NVIDIA may choose to discontinue certain drivers for specific operating systems, e.g., CUDA 12.2 drivers may not be available for Windows 10 for certain GPU series. In such a case, an update to Windows 11 may permit further usage of the GPU with Sim4Life. IMPORTANT: Please note that this version of Sim4Life is the last one that will support Maxwell architecture. NVIDIA has announced that in the next major release of the CUDA Toolkit, expected to be CUDA 13.0, support for Maxwell architectures (compute capability 5.x) will be discontinued for high-performance computing development. -------------------------------------------------------------------- 3. New Features & Enhancements -------------------------------------------------------------------- 3.1. Modeling - Advanced anatomical modeling and AI-powered tools: Third-generation deep learning model automatically labels head, neck, and torso tissues from MRI/CT scans, generating solver-ready models directly from raw images. This reduces setup time and required user interaction by approximately 50% compared to previous versions. - Deep Brain Stimulation (DBS) / Stereoelectroencephalography (sEEG) Electrode Generator: A new tool that rapidly creates parameterized DBS and sEEG electrode models for neurostimulation applications. Users can customize diameter, contact length, spacing, arc angle, segmentation, and tip offset - either interactively or via the Python API. - New angle measurement tool in the model environment for improved geometric analysis. - Sample Surface tool enabling users to generate points on a meshed surface with configurable sampling distance and sampling size. - The 10-10 system modeling tool now includes the outermost ring defined in the system specification. - Automatic material-tag assignment for surfaces generated during segmentation. - Implemented a mesh smoothing method in the Octree Mesher to enhance mesh quality and achieve smoother surfaces. - Users can now set a preferred zoom direction for mouse wheel scrolling in the 3D View via Preferences. 3.2. Simulation - New Broadband Skin Power Absorption Model that implements the latest model from Christ et al. (2025), now adopted by IEC/IEEE standards. This model enables absorbed power density evaluation for regulatory compliance and device safety assessments across the 10-110 GHz frequency range. - T-increase Thermal Transient Simulation option enables simplified thermal simulations focused on temperature rise rather than absolute temperature for improved accuracy and solver efficiency. 3.3. Analysis - Users can now drag entire folders (entity groups) that are not part of a simulation into the masking filter. 3.4. ViP & ViZoo - Upgraded ViP models (Duke, Ella, Fats, Billie, Thelonious, and Yoon-sun) now support more realistic deformation fields in joint region in extreme postures - such as arms raised overhead - and offer more degrees of freedom with additional spinal joints, enabling natural neck and back bending. -------------------------------------------------------------------- 4. List of Main Bugs (Selection) Fixed Since V9.0 Release -------------------------------------------------------------------- - Case 110628: Sim4Life now correctly connects to the material database when the Windows username contains non-ASCII characters. - Case 218218: The scaling bar in the 3D window no longer overlaps with the hint text that appears when using some modeling tools. - Case 221200: Fixed a false-positive connectivity check that incorrectly flagged closed coils as open, which could lead to indefinite matrix calculations in low-frequency magneto vector potential simulations. - Case 222080: Fixed an issue, where changing the MIP Viewer "Slice Index" did not move the projection slice as intended. - Case 222464: Fixed an issue, where the properties of label fields and images would sometimes disappear from the controller. - Case 222618: Fixes in spline and edge rendering to optimize performance for faster and more responsive drawing and visualization. - Case 223041: Fixed a crash that occurred when orbiting the 3D window repeatedly. - Case 224789: Fixed an issue, where the centerline tool did not allow selecting points on the mesh as source or target. - Case 224833: Fixed an issue, where the gridding engine would not recalculate grids after clearing the results and resetting the voxels of an LF MQS simulation. - Case 225974: Fixed an issue, where planar cuts to static ViP models did not affect the grid or bounding box dimensions. - Case 230417: Fixed an issue, where not all entities within a group were stretched correctly. - Case 232001: Fixed an issue, where transformations applied to imported HOC neurons were displayed correctly in Modeling, but the extracted transformation used for potential-field interpolation was incorrect. - Case 232183: Fixed an issue, that caused inaccuracies in GPU-accelerated CEM43 calculations in the thermal solver. - Case 233013: Fixed an issue, where enabling both CEM43 and Arrhenius metric recording during transient thermal simulations caused the CEM43 values to be overwritten by the Arrhenius values. -------------------------------------------------------------------- 5. Known Issues -------------------------------------------------------------------- - Case 32807: Instability for some rare dispersive material configurations. - Case 47035: Random problems in the visualization of Dispersive Viewer. - Case 54000: Random elements appearing in Gridder. - Case 61881: Rare issue with the distribution of simulation jobs to the GPUs when using CUDA. - Case 86865: Job priorities may not correspond to the job execution order. - Case 98764: Potentially decreased accuracy in rare specific events for the sensor combiner of the Far-field sensor.