S-1 Supercomputer (1975-1988)

Mark Smotherman's detailed historical account of the S-1 supercomputer project (1975-1988), led by Lowell Wood at Lawrence Livermore National Lab and largely designed by Stanford graduate students Tom McWilliams and Curt Widdoes. The site documents the project's multiple processor generations (Mark I, Mark IIA, and the AAP), its technical innovations such as branch prediction and cache coherency, and its influence on CAD tools and programming languages like Common LISP and gcc. It includes photographs, technical specifications, and design details drawn from project documents and personal research.