Scientific Computer Systems Corp, San Diego has added an extended memory feature to its minisupercomputers that offers 1Gb of store: the option includes an upgrade from the Cray X-MP/24 instruction set to the functionality of the Cray X-MP/416, and also implements gather/scatter and compress index advanced vector instructions on the SCS-40 – these provide support for high-speed indirect addressing of array elements, reducing the number of cycles needed to reference an array element indirectly by factors of 20, and can result in overall program performance improvements of two to three times, as well as enabling vectorisation in programs that would otherwise not vectorise; the SCS extended memory option is out now at $16,000 per megaword.
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