Kendall Square Research

Kendall Square Research (KSR) was a supercomputer company headquartered in Kendall Square, near MIT. Its machines ran Unix, and were shared memory NUMA machines based on a custom processor.

A moderate number of the KSR1 models were sold, but as the KSR2 was being rolled out, the company collapsed amid accounting irregularities.

One customer of the KSR2, the Pacific Northwest National Lab, a Department of Energy facility, purchased an enormous pile of spare parts, and kept their machines running for years after the demise of KSR.