How to determine whether the installation file is 32-bit or 64-bit?

The 32-bit installation executables have “x86” as part of their name.

E.g., for Mirasys VMS V7.5.1 “Release_751_DVMS_PAL_x86.exe”, and 64-bit executables have “x64” (e.g., “Release_751_DVMS_PAL_x64.exe”).

The origin of this naming convention comes from the naming conventions of Intel 32-bit vs. 64-bit microprocessors (CPUs).