Windows : The Vensim family of software runs on Windows 8/8.1/10 (it should also work on Windows XP, Vista and Windows 7, but is unsupported). Vensim is available in both 32 and 64 bit versions.
Apple Mac : The Macintosh version requires OSX version 10.10 or higher. Vensim 8 and higher will run on 64 bit versions of MacOS (including Catalina). The Windows Version will run on the Macintosh using emulators like VMware or Crossover, or with a Windows virtual/alternate boot installation.
Vensim requires about 60 megabytes of disk space for a full installation and will run with any reasonable amount of memory. For very large models more memory and disk space will be required as a single run can easily take 100 megabytes of disk space. Generally it is a good idea to have at least as much memory as the size of the largest .vdfx file you are creating.
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