Page ‹#›
Chapter 2
Computer Architecture
Venkatesh Akella
EEC 270
Winter 2005
Chapter 2
Project Topics
1. Trading Reliability for Energy : Voltage Overscaling
in Data Caches, especially in media applications
2. ASIP - Application Specific Instruction Processor
for a given domain - streaming, packetization,
arithmetic coding, error correction/detection
3. Application Specific Loop Processor - a simple
programmable vector co-processor for ARM and
implement using Tensilica, SimpleScalar for
multimedia or message passing algorithms (LDPC
decoding), focus on programmable memory access
unit and smaller bitwdith operations
4. Network processors for multimedia over wireless ad-
hoc networks.
5. Processors for Sensor Networks
6. Low Density Parity Check Codes - Programmable
Architectures
7. Simultaneous Multithreading and dynamic resource
management
Chapter 2
Project Topics
•Embedded Processors
–ASIP
–ASLP
•Voltage speculation to save energy
–Overclocking data caches
–Reliability vs energy
•Multithreading for dynamic resource management
•Low Density Parity Check Codes
–High Speed - interconnection networks
–HW/SW Codesign
•Networking Processors
–Sensors
–Multimedia Packet Scheduling
Chapter 2
Instruction Set Design – Principles and
Examples
Execution Time = IC * CPI * Tc
IC = Dynamic Instruction Count
Instruction Set influences IC, CPI
Desktop – Int/FP – power/codesize not important
Server - Integer – No FP – string manipulation imp
Embedded – Cost, Power, Real time – smaller
bitwdith
