No-Break Dynamic Defragmentation of Reconfigurable Devices
Abstract
We propose a new method for defragmenting the module layout of a reconfigurable device, enabled by a novel approach for dealing with communication needs between relocated modules and with inhomogeneities found in commonly used FPGAs. Our method is based on dynamic relocation of module positions during runtime, with only very little reconfiguration overhead; the objective is to maximize the length of contiguous free space that is available for new modules. We describe a number of algorithmic aspects of good defragmentation, and present an optimization method based on tabu search. Experimental results indicate that we can improve the quality of module layout by roughly 50 % over static layout. Among other benefits, this improvement avoids unnecessary rejections of modules
Cite
@article{arxiv.1012.5330,
title = {No-Break Dynamic Defragmentation of Reconfigurable Devices},
author = {Sandor Fekete and Tom Kamphans and Nils Schweer and Christopher Tessars and Jan C. van der Veen and Josef Angermeier and Dirk Koch and Juergen Teich},
journal= {arXiv preprint arXiv:1012.5330},
year = {2011}
}
Comments
18 pages, 13 figures, an earlier version appeared in the proceedings of the FPL 08