VLSI

8 Quest for Energy Efficiency in Digital Signal ProcessingArchitectures, Algorithms, and Systems

Ramakrishnan Venkatasubramanian

Contents

8.1 Introduction

8.2 DSP Computing: Compute and Memory Bandwidth Trends

8.2.1 Mobile Computing Trends

8.2.2 High-Performance Computing and DARPA Computing Challenges

8.3 DSP Comparison with Application Processors and GPU

8.3.1 What Makes a DSP a DSP? Real-Time Processing–DSP versus Application Processor

8.3.2 VLIW and SIMD

8.3.3 DSP versus GPGPU

8.3.4 Single Core versus Multicore

8.4 DSP Compute Scaling Trend and Floating-Point Convergence

8.4.1 GMAC Scaling Trend

8.4.2 Fixed versus Floating Point

8.4.3 Dynamic Range and Precision

8.4.4 Convergence of Fixed and Floating Point

8.5 Energy Efficiency as the ...