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An interconnection pattern of processing elements, the cube-connected cycles (CCC), is introduced which can be used as a general purpose parallel processor. Because its design complies with present technological constraints, the CCC can also be used in the layout of many specialized large scale integrated circuits (VLSI). By combining the principles of… (More)

A data structure is described which can be used for representing a collection of priority queues. The primitive operations are insertion, deletion, union, update, and search for an item of earliest priority.

We present some quantitative performance measurements for the computing power of Programmable Active Memories (PAM), as introduced by BRV 89]. Based on Programmable Gate Array (PGA) technology, the PAM is a universal hardware co-processor closely coupled to a standard host computer. The PAM can speed up many critical software applications running on the… (More)

We detail and analyse the critical techniques which may be combined in the design of fast hardware for RSA cryptography: chinese remainders, star chains, Hensel's odd division (a.k.a. Montgomery modular reduction), carry-save representation, quotient pipe-lining and asynchronous carry completion adders. A PAM 1 implementation of RSA which combines all of… (More)

This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for non-profit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of the an acknowledgement of the… (More)

| Programmable Active Memories (PAM) are a novel form of universal reconngurable hardware co-processor. Based on Field-Programmable Gate Array (FPGA) technology, a PAM is a virtual machine, controlled by a standard microprocessor , which can be dynamically and indeenitely recon-gured into a large number of application-speciic circuits. PAMs ooer a new… (More)

Examples of fruitful interaction between geometrical combinatorics and the design and analysis of algorithms are presented. A demonstration is given of the way in which a simple geometrical construction yields new and efficient algorithms for various searching and list manipulation problems.

We introduce a representation of the <italic>computable real numbers</italic> by continued fractions. This deals with the subtle points of undecidable comparison an integer division, as well as representing the infinite 1/0 and undefined 0/0 numbers. Two general algorithms for performing arithmetic operations are introduced. The <italic>algebraic… (More)