There were 4 of the then state-of-the-art, fastest in the world, CDC-7600 and CDC-6600 computers installed at Lawrence Livermore Lab (LLL, now LLNL, Lawrence Li

There were 4 of the then state-of-the-art, fastest in the world, CDC-7600 and CDC-6600 computers installed at Lawrence Livermore Lab (LLL, now LLNL, Lawrence Livermore National Lab) when I worked there during the summer of 1972.