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The NYU Ultracomputer—Designing an MIMD Shared Memory Parallel Computer

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6 Author(s)
A. Gottlieb ; Courant Institute of Mathematical Sciences, New York University ; R. Grishman ; C. P. Kruskal ; K. P. McAuliffe
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We present the design for the NYU Ultracomputer, a shared-memory MIMD parallel machine composed of thousands of autonomous processing elements. This machine uses an enhanced message switching network with the geometry of an Omega-network to approximate the ideal behavior of Schwartz's paracomputer model of computation and to implement efficiently the important fetch-and-add synchronization primitive. We outine the hardware that would be required to build a 4096 processor system using 1990's technology. We also discuss system software issues, and present analytic studies of the network performance. Finally, we include a sample of our effort to implement and simulate parallel variants of important scientific p̀rograms.

Published in:

IEEE Transactions on Computers  (Volume:C-32 ,  Issue: 2 )