Buffer Allocation in Regular Dataflow Networks: An Approach Based on Coloring Circular-Arc Graphs

Govindarajan, R and Rengarajan, S (1996) Buffer Allocation in Regular Dataflow Networks: An Approach Based on Coloring Circular-Arc Graphs. In: 3rd International Conference on High Performance Computing, 1996, 19-22 December, Trivandrum,India, pp. 419-424.

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Abstract

In this paper we discuss a method to perform compile-time buffer allocation, allowing efficient buffer sharing among the arcs of a special form of dataflow graphs-known as regular stream flow graphs-commonly used in Digital Signal Processing applications. We relate the buffer sharing problem to that of finding independent sets in weighted circular arc graph. An important difference between the traditional graph coloring/register allocation problem and our buffer sharing problem is that in our problem the aim is to minimize the sum of the weights of the independent sets, rather than the number of independent sets. We present a heuristic algorithm and experiment it on a large number of randomly generated regular dataflow graphs as well as a few DSP applications. It is observed that the heuristic algorithm performs well, reducing the buffer requirement by 14.3% on the average. Also, we observe that buffer requirement achieved by the heuristic algorithm is within 2.1% from the lower bound.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited:	06 May 2006
Last Modified:	19 Sep 2010 04:26
URI:	http://eprints.iisc.ac.in/id/eprint/6608

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