Cray T90

The Cray T90 series, code-named Triton while it was in development, was a family of vector supercomputers made by Cray Research and the last machine in that company's line of vector processing supercomputers. It succeeded the Cray C90 series, and the first machines shipped in 1995. Each processor ran on a 2.2 nanosecond clock cycle, about 450 megahertz, with two-wide vector pipes, giving a peak speed of 1.8 gigaflops per processor, and the processors were built from emitter-coupled logic. Systems came as the T94, T916 and T932 with between four and 32 processors sharing a main memory of up to eight gigabytes. A 32-processor T932 cost 35 million dollars at launch. The machines were considered slightly ahead of the state of the art when shipped but were never particularly reliable, and the industry was by then turning to massively parallel designs such as Cray's own T3D. The Cray X1 later succeeded the T90.