There was a time when IBM's mainframes were cutting-edge machines for scientific and engineering calculations. Those days began in the 1960s, when IBM's System 360 rewrote the rules of computing and before humans walked on the moon. Big Blue long since has moved its high-performance technical computing effort toward its high-end Blue Gene systems and more conventional Linux servers using Intel and AMD x86 chips and Unix servers with its own Power processor. IBM's System Z mainframe line is now geared for commercial customers who are willing to pay a premium for reliability and high performance for tasks such as database transactions. Now NASA has followed suit, switching off its last mainframe Read more