An overview of system requirements is provided in System requirements on x86/x64 Solaris. The sections that follow discuss any relevant details.
Hardware Requirements
Software Requirements
For 32-bit LispWorks, 130MB of disk space
Solaris 10 (release 5/08 or later), Solaris 11, or OpenSolaris (release 2009.06 or later)
For 64-bit LispWorks, 140MB of disk space
GTK+ 2 (version 2.4 or higher) to run the GTK+ GUI. Motif 2.1 and Imlib to run the deprecated Motif GUI
Any modern machine is likely to have sufficient RAM to run LispWorks as distributed.
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LispWorks Release Notes and Installation Guide - 23 Dec 2011
