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1 - Automatic code generation for real-time convex optimization

Published online by Cambridge University Press:  23 February 2011

Jacob Mattingley
Affiliation:
Stanford University
Stephen Boyd
Affiliation:
Stanford University
Daniel P. Palomar
Affiliation:
Hong Kong University of Science and Technology
Yonina C. Eldar
Affiliation:
Weizmann Institute of Science, Israel
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Summary

This chapter concerns the use of convex optimization in real-time embedded systems, in areas such as signal processing, automatic control, real-time estimation, real-time resource allocation and decision making, and fast automated trading. By “embedded” we mean that the optimization algorithm is part of a larger, fully automated system, that executes automatically with newly arriving data or changing conditions, and without any human intervention or action. By “real-time” we mean that the optimization algorithm executes much faster than a typical or generic method with a human in the loop, in times measured in milliseconds or microseconds for small and medium size problems, and (a few) seconds for larger problems. In real-time embedded convex optimization the same optimization problem is solved many times, with different data, often with a hard real-time deadline. In this chapter we propose an automatic code generation system for real-time embedded convex optimization. Such a system scans a description of the problem family, and performs much of the analysis and optimization of the algorithm, such as choosing variable orderings used with sparse factorizations and determining storage structures, at code generation time. Compiling the generated source code yields an extremely efficient custom solver for the problem family. We describe a preliminary implementation, built on the Python-based modeling framework CVXMOD, and give some timing results for several examples.

Introduction

Advisory optimization

Mathematical optimization is traditionally thought of as an aid to human decision making.

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Chapter
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Publisher: Cambridge University Press
Print publication year: 2009

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