Supported Machines

E3SM is supported for all users of the following platforms

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• UNIX-style operating system such as CNL, AIX and Linux

• csh, bash shells

• A recent version of the Perl scripting language (5.16+), plus the following modules:

  • XML::SAX  (from  LibXML module)

  • XML::SAX::Exception ( from the LibXML module)

  • Switch (Switch.pm)

• subversion client version 1.4.2 or greater (for downloading CESM-originating data files)

• Git version 2.0 or newer (for getting source code)

• Fortran (2003 support required) and C/C++ compilers.

• MPI (although E3SM does not absolutely require it for running on one processor)

• One or both of ( NetCDF-C 4.4.0, NetCDF-Fortran 4.5.0 and/or PNetCDF 1.12 or newer. (E3SM can use PnetCDF if NetCDF is not installed).

• CMake 3.18 or newer is required 

• Python 3.10 or newer is required for E3SM-specific build/test scripts.

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