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History of HPC in IBM and Challenge of Exascale - page 7 / 15

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© 2005 IBM Corporation

Page 7

IBM 3090 Vector Facility - 1986

The vector facility was an optional component of the standard IBM                                                         an addition to the instruction                                                            execution part of the base machine.                                                       171 new instructions were also introduced with the vector facility.                                                   vector registers and two vector                                                       pipelines, one multiply/divide pipeline and one arithmetic and logical pipeline. Each of the pipelines can produce one result per machine cycle, except for divide operations. The two pipelines can be chained together to produce two vector operations per machine cycle

VS Fortran and ESSL were developed to take advantage of the special architectural features of 3090 VF, helping to compete against the Cray XMP and YMP products.

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