Currently Ubuntu supports 256 CPUs in a server config (ref: http://askubuntu.com/questions/158555/how-many-maximum-cpus-does-ubuntu-support-by-default) and that # is still valid for Saucy.
Currently Ubuntu supports 256 CPUs in a server config (ref: http:// askubuntu. com/questions/ 158555/ how-many- maximum- cpus-does- ubuntu- support- by-default) and that # is still valid for Saucy.