System Requirements

General Requirements
Version 6.2

Operating System

  • 64 bit Windows 10

Minimum Memory

  • 8GB RAM (16GB recommended)


Since SINDA/FLUINT allows user logic and generates a unique executable each time it is run, you MUST have a copy of the correct compiler.

Prerequisite Software

  • Fortran Compiler
    • The following compilers are compatible with CRTech software
      • Intel® Visual Fortran Composer XE for Windows, version 2018 or newer
      • Parallel Studio XE for Windows, version 2018 or newer
      • Intel oneAPI HPC Toolkit This is the recommended option
      • SINDA/FLUINT v6.2 will be the last version to support the Composer and Parallel Studio options, only Intel oneAPI HPC will be continued to be supported starting with version 6.3.
  • Microsoft Visual Studio
    The Intel compiler requires MS Visual Studio or Build Tools for Visual Studio 2019 to be installed. Check the Intel system requirements to see which versions of Visual Studio are supported for a particular version of the Intel compiler.

    • Integration with Intel Parallel Studio XE versions 2018, early 2019: These installers provide an integrated shell version of Visual Studio which will suffice. For these Intel installations, if Visual Studio is not found on the computer, the installer will automatically install the shell version. No purchase of the Microsoft Visual Studio is required. If Visual Studio is already installed on the computer, Intel will integrate with it and not install the shell.
    • Integration with Intel Parallel Studio XE version 2019 update 3 or newer: These installers do not provide an integrated Visual Studio shell. For these installations you must install MS Visual Studio or Build Tools 2019.
      • Build Tools for Visual Studio 2019 Recommended: This is the simplest and lowest cost option to support the Intel compiler usage with CRTech software.
        • Build Tools is a subset of Visual Studio which allows you to build Visual Studio projects from a command-line interface. This is all that is required to support CRTech software.
        • Compatible with Intel Parallel Studio XE 2019 update 4 or newer, and Intel Parallel Studio XE 2020.
      • MS Visual Studio Community
        • For classroom learning environments, academic research, or for contributing to open source projects, Visual Studio Community can be used at no cost.
        • For non-enterprise organizations, up to five users can use Visual Studio Community.
        • Enterprise organizations (>250 PCs or > US$1 million annual revenue), no use is permitted beyond the open source, academic, classroom training.
      • MS Visual Studio Professional or Enterprise
        • For enterprise organizations which do not meet the Community requirements.

Thermal Desktop®, RadCAD®, and FloCAD®

Prerequisite Software

  • SINDA/FLUINT, which is the solution engine, must be installed
  • CAD Package: AutoCAD® 2017, 2018, 2019, 2020, or 2021. The standard version AutoCAD is required, AutoCAD LT is not compatible.
    Autocad system requirements
    Thermal Desktop v6.1 was the last version to support AutoCAD 2015 and 2016
    Thermal Desktop v6.2 will be the last version to AutoCAD 2017


  • Discrete graphics card with a minimum of 1 GB GPU Direct 11 compliant (4 GB GPU recommended), see Autodesk's website for certified graphics cards
  • Display resolution: 1280 x 800 minimum or finer with 100% font size recommended​

TD Direct®

Prerequisite Software

  • Thermal Desktop
  • CAD Package:
    • Ansys SpaceClaim® 2019 R1 to 2020 R2 for version 6.1
    • Ansys SpaceClaim® 2020 R2 and above for version 6.2
      • SC 2021 R1 is supported for version 6.2, but SpaceClaim Direct Modeler (SCDM) 2021 R1 is not recommended
  • Also see SpaceClaim system requirements

Open TD

Prerequisite Software

  • Thermal Desktop v6.1
  • CAD Package: AutoCAD, 2018 or newer is required
  • Programming language that can connect at runtime to a .NET 4.0 dll, examples are:
    • C# / VB.NET / F# via Visual Studio or Microsoft Build Tools
    • PowerShell
    • MATLAB
    • Python