Su_2.4mac.zip

Typically, a "mac" zip for SU2 contains pre-compiled binaries so you don't have to build them from source.

A compressed archive containing the executables and libraries. Contents & Installation SU_2.4mac.zip

The version number (an older legacy release, as current versions are typically v7.x or v8.x). Typically, a "mac" zip for SU2 contains pre-compiled

: On macOS, you may need to grant permission for these "unidentified developer" binaries to run via System Settings > Privacy & Security . Key Features of the 2.4 Era SU_2.4mac.zip