Concept

Kendall Square Research

Résumé
Kendall Square Research (KSR) was a supercomputer company headquartered originally in Kendall Square in Cambridge, Massachusetts in 1986, near Massachusetts Institute of Technology (MIT). It was co-founded by Steven Frank and Henry Burkhardt III, who had formerly helped found Data General and Encore Computer and was one of the original team that designed the PDP-8. KSR produced two models of supercomputer, the KSR1 and KSR2. It went bankrupt in 1994. Technology The KSR systems ran a specially customized version of the OSF/1 operating system, a Unix variant, with programs compiled by a KSR-specific port of the Green Hills Software C and FORTRAN compilers. The architecture was shared memory implemented as a cache-only memory architecture or "COMA". Being all cache, memory dynamically migrated and replicated in a coherent manner based on the access pattern of individual processors. The processors were arranged in a hierarchy of rings, and the operating system mediated proces
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