An Optimization Methodology for Memory Allocation and Task Scheduling in SoCs Via Linear Programming

摘要

Applications for system on chips become more and more complex. Also the number of available components (DSPs, ASICs, Memories, etc.) rises continuously. These facts necessitate a structured method for selecting components, mapping applications and evaluating the chosen configuration and mapping. In this work we present a methodology for the last named. We will consider optimization of memory allocation and task scheduling as a packing problem and minimize needed memory area. The results can be used as one element of an automated performance analysis for a given system on a high abstraction level. This analysis is essential for establishing a framework that iterates over a large quantity of possible systems. Considering a part of the H.264 codec as an example we will illustrate the results. Furthermore we will show that results can be retrieved fast compared to other NP-hard problems due to intelligent formulation of conditions within the linear program.