A Control Theory Approach to Improve the Real-Time Capability of Multi-Threaded Microprocessors

Author

Brinkschulte, Uwe ; Pacher, Mathias

Author_Institution

Inst. for Process Control, Autom. & Robot., Univ. of Karlsruhe, Karlsruhe

fYear

2008

fDate

5-7 May 2008

Firstpage

399

Lastpage

404

Abstract

Our aim is to investigate if it is possible to control the throughput (IPC rate) of a thread running on a simultaneous multi-threaded microprocessor by a closed feedback loop. We showed in previous experimental studies that the proposed approach works. In this paper we discuss the control theory approach from a theoretical point of view. We develop a mathematical model of a general purpose multi-threaded microprocessor enhanced with a closed feedback controller and use control theory methods to investigate properties like stability and settling time.

Keywords

closed loop systems; feedback; multi-threading; closed feedback controller; closed feedback loop; control theory; mathematical model; multithreaded microprocessors; Adaptive control; Clocks; Communication system control; Control theory; Delay; Mathematical model; Microprocessors; Robotics and automation; Throughput; Yarn; Control theory in high-end microprocessors; IPC rate; real-time microprocessors;

fLanguage

English

Publisher

ieee

Conference_Titel

Object Oriented Real-Time Distributed Computing (ISORC), 2008 11th IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

978-0-7695-3132-8

Type

conf

DOI

10.1109/ISORC.2008.8

Filename

4519609