LispWorks supports Symmetric Multiprocessing (SMP) on Microsoft Windows, Mac OS X, Linux, FreeBSD and x86/x64 Solaris platforms. Where functionality differs from other platforms, the documentation refers to "SMP LispWorks" or "Non-SMP LispWorks", as appropriate.
The remainder of this section describes changes made since the introduction of SMP LispWorks in version 6.0.
LispWorks Release Notes and Installation Guide - 23 Dec 2011