Solving SAT with a Context-Switching Virtual Clause Pipeline and an FPGA Embedded Processor

Abstract. This paper proposes an architecture that combines a contextswitching virtual configware/software SAT solver with an embedded processor to promote a tighter coupling between configware and software. The virtual circuit is an arbitrarily large clause pipeline, partitioned into sections of a number of stages (hardware pages), which can fit in the configware. The hardware performs logical implications, grades and select decision variables. The software monitors the data and takes care of the high-level algorithmic flow. Experimental results show speed-ups that reach up to two orders of magnitude in one case. Future improvements for addressing scalability and performance issues are also discussed.

• Type: Conference
• Year: 2004
• Where: FPL
• Authors: C. J. Tavares, C. Bungardean, G. M. Matos, José T. de Sousa
• Keywords: FPL 2004, Large Clause Pipeline, Select Decision Variables, Tighter Coupling