IBM Systems Journal - 2002 Copyright

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IBM Journal of Research and Development  
Volume 8, Number 2, Page 118 (1969)
Nontopical Issue
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An auxiliary processing system for array calculations

by J. F. Ruggiero, D. A. Coryell
The IBM 2938 Array Processor discussed enhances the processing power of SYSTEM/360 Models 44, 65, and 75 for operations on vectors and matrices. As an integrated channel-I/O device, the array processor responds to standard I/O instructions. Discussing the overall flow of control between the central processing unit, main storage, and the array processor, the relationship between the SYSTEM/360 Operating System and the array processor's programming support is emphasized. The twelve mathematical processing operations embodied in the 2938 are described in terms of their algorithms. Several methods for measuring array processor performance are shown together with actual timing results.
Related Subjects: Programming; System Design