COMPUTER SYSTEM PERFORMANCE

Computer System Performance

Abstract

Computer system improvement has been, and always will be, significantly influenced by the underlying trends and capabilities of hardware and software technologies. The transition from electromechanical relays to vacuum tubes to transistors to integrated circuits has driven fundamentally different trade-offs in the architecture of computer systems. Additional advances in software, which includes the transition of the predominant approach to programming from machine language to assembly language to high-level procedural language to object-oriented language, have also resulted in new capabilities and design points. The impact of these technologies on computer system architectures past, present, and future will be explored and projected.

Computer System Performance

Introduction

In the history of computer technology, early in the Reduced Instruction Set Computer CPU (RISC processors) Use a solution A very similar architecture, called Now Who EST pipeline RISC standard. THESE ARE Processors: MIPS, SPARC, Motorola 88000, THEN DLX. Each of these models and conventional scalar RISC al executor Try A nominal cycle instruction. The basic concept of Every Global project, there was Five stage pipeline executor of commands. During Every step of the pipeline operated sera with an instruction from the liver. Mainly CET Treaty Article (Auslander, 1981)

Discussion

Instruction Cache these machines were delayed cycle of the UN. At the instruction fetch stage, 32-bit instructions have been recovered from the cache.

Send PC cache predictor Counter (PC) to the instruction to read the Current Order. Time DanS Sami, PREDIT PC predictor of decreasing Next instruction address PC by 4 (All instructions of 4 bytes). This prediction you'll be not always undertaken in the CAS branch, Jumping, except to OR (see the branches of delay, below). Later the cars use more complex and accurate algorithms (prediction and forecasting Connection index) Predicting the Next instruction address. (Patterson, 1980)

Methods

Previous Microcoded Unlike machines, machines RISC First firmware NE. After taking ...