The public labs are located in GDC 3.302 and GDC 1.310. Each station in GDC 1.310 contains a UNIX machine and a Windows machine with a KVM switch to go from one to the other. GDC 3.302 contains mostly UNIX machines and a few Windows machines. You can also access the UNIX computers remotely via ssh; view the public UNIX host status page for a list of the UNIX computers and their current status. These labs are open to all students currently enrolled in a CS course.
For more information on all of these labs, see the Public Labs page.