Software Synthesis from Dataflow Graphs / Edition 1

Software Synthesis from Dataflow Graphs / Edition 1

by Shuvra S. Bhattacharyya, Praveen K. Murthy, Edward A. Lee
     
 

ISBN-10: 0792397223

ISBN-13: 9780792397229

Pub. Date: 05/31/1996

Publisher: Springer US

Software Synthesis from Dataflow Graphs addresses the problem of generating efficient software implementations from applications specified as synchronous dataflow graphs for programmable digital signal processors (DSPs) used in embedded real- time systems. The advent of high-speed graphics workstations has made feasible the use of graphical block diagram

Overview

Software Synthesis from Dataflow Graphs addresses the problem of generating efficient software implementations from applications specified as synchronous dataflow graphs for programmable digital signal processors (DSPs) used in embedded real- time systems. The advent of high-speed graphics workstations has made feasible the use of graphical block diagram programming environments by designers of signal processing systems. A particular subset of dataflow, called Synchronous Dataflow (SDF), has proven efficient for representing a wide class of unirate and multirate signal processing algorithms, and has been used as the basis for numerous DSP block diagram-based programming environments such as the Signal Processing Workstation from Cadence Design Systems, Inc., COSSAP from Synopsys® (both commercial tools), and the Ptolemy environment from the University of California at Berkeley. A key property of the SDF model is that static schedules can be determined at compile time. This removes the overhead of dynamic scheduling and is thus useful for real-time DSP programs where throughput requirements are often severe. Another constraint that programmable DSPs for embedded systems have is the limited amount of on-chip memory. Off-chip memory is not only expensive but is also slower and increases the power consumption of the system; hence, it is imperative that programs fit in the on-chip memory whenever possible. Software Synthesis from Dataflow Graphs reviews the state-of-the-art in constructing static, memory-optimal schedules for programs expressed as SDF graphs. Code size reduction is obtained by the careful organization of loops in the target code. Data buffering is optimized by constructing the loop hierarchy in provably optimal ways for many classes of SDF graphs. The central result is a uniprocessor scheduling framework that provably synthesizes the most compact looping structures, called single appearance schedules, for a certain class of SDF graphs. In addition, algorithms and heuristics are presented that generate single appearance schedules optimized for data buffering usage. Numerous practical examples and extensive experimental data are provided to illustrate the efficacy of these techniques.

Product Details

ISBN-13:
9780792397229
Publisher:
Springer US
Publication date:
05/31/1996
Series:
The Springer International Series in Engineering and Computer Science, #360
Edition description:
1996
Pages:
190
Product dimensions:
6.14(w) x 9.21(h) x 0.24(d)

Table of Contents

1. Introduction. 2. Terminology and Notation. 3. Synchronous Dataflow. 4. Looped Schedules. 5. Loose Interdependence Algorithms. 6. Joint Code and Data Minimization. 7. Pairwise Grouping of Adjacent Nodes. 8. Experiments. 9. Open Issues. Subject Index.

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