Les Mikesell wrote: > Why not use a virtual machine for that and have a cleaner separation > of the architectures? Biarch runs natively and therfore faster, it can use hardware-accelerated OpenGL, it is easier to setup and use, and it is fully supported by TUV. To me the separation of arcitectures is clean enough and you simply switch from 64-bit-mode to 32-bit-mode by typing 'linux32'. How can it be better with a virtual machine? Also consider for example a compute cluster. It will of course have the 64-bit version of CentOS installed, but some users may also want to run 32-Bit-Code on it (because it's faster in their case, because their code isn't 64-bit-clean yet, or because it's a 32-bit-only commercial code, whatever). -Michael