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\begin{document}

\title{RESEARCH IN \\COMPUTER ARCHITECTURE}
\author{M. J. Flynn}		
\date{January 1993}
\report{Report: CSL-TR-93-571}
\abstract{
Efficient processor implementations require complex architecture
tradeoffs among a number of competing considerations (cycle time,
register set size, cache size, instruction set capability, etc.). 
Concurrent techniques can be used to speed up processors 
both by achieving increased pipelining of the processor operations
and by realizing efficient multi-processor architectures. 

This progress report describes some of the work being performed 
by the Computer Architecture Group under contract with NASA.
}		
\keywords{Architecture simulation, direct mapped caches, lattice gas computers,
 page mapping, run-time resource management, virtual memory.}
\contract{The research described here has been supported by the Ames
Research Center under NASA grants NAG2-248 and NAGW 419.}

\makefront

\input short.tex
\input /user/gere/tex/neal.macros

\section{The Parallel Architect's Workbench}
\subsection*{Andrew C. Zimmerman}

This year we have developed tools for studying the effect 
of I/O storage systems on overall systems performance.

 \input{/user/gere/res/ks/fin92/pawb.tex}
 \input{/user/gere/res/ks/fin92/f90.tex}
 \input{/user/gere/res/ks/fin92/azcur.tex}


\section{Input/Output and Memory Evaluation}
\subsection*{Kathy Richardson}
 \input /user/gere/res/casis/ar92/kjr.tex


\section{Page Coloring}
\subsection*{William L. Lynch}
 \input{/user/gere/res/ks/fin92/lynch91.tex}
 \input{/user/gere/res/ks/fin92/lynch.tex}


\section{Studies of Optical Interconnects for Multiprocessors}
\subsection*{Timothy M. Pinkston}

We have continued to study possible optical interconnections for
multiprocessors. 
 \input /user/gere/res/casis/ar92/tpink.tex


\section{Computer Architectures for Lattice-Gas Simulations}
\subsection*{Fung F. Lee}
 \input{/user/gere/res/ks/fin92/flee.tex}


\section{The Computer Architect's Workbench}
\subsection*{Brian Bray}

We have continued our basic studies on special-purpose processors 
for pattern recognition and pattern perception.
 \input /user/gere/res/casis/ar92/bray.tex


\section{A Variable-Resolution, Nonlinear Silicon Cochlea}
\subsection*{Neal A. Bhadkamkar}
 \input /user/gere/res/casis/ar92/neal.tex

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