PathFinder: a negotiation-based performance-driven router for FPGAs
FPGA '95 Proceedings of the 1995 ACM third international symposium on Field-programmable gate arrays
HSRA: high-speed, hierarchical synchronous reconfigurable array
FPGA '99 Proceedings of the 1999 ACM/SIGDA seventh international symposium on Field programmable gate arrays
The case for registered routing switches in field programmable gate arrays
FPGA '01 Proceedings of the 2001 ACM/SIGDA ninth international symposium on Field programmable gate arrays
Integrated retiming and placement for field programmable gate arrays
FPGA '02 Proceedings of the 2002 ACM/SIGDA tenth international symposium on Field-programmable gate arrays
Architecture and CAD for Deep-Submicron FPGAs
Architecture and CAD for Deep-Submicron FPGAs
PipeRoute: a pipelining-aware router for FPGAs
FPGA '03 Proceedings of the 2003 ACM/SIGDA eleventh international symposium on Field programmable gate arrays
RaPiD - Reconfigurable Pipelined Datapath
FPL '96 Proceedings of the 6th International Workshop on Field-Programmable Logic, Smart Applications, New Paradigms and Compilers
Place and route techniques for fpga architecture advancement
Place and route techniques for fpga architecture advancement
Proceedings of the 16th international ACM/SIGDA symposium on Field programmable gate arrays
Enhancing timing-driven FPGA placement for pipelined netlists
Proceedings of the 45th annual Design Automation Conference
Don't forget memories: a case study redesigning a pattern counting ASIC circuit for FPGAs
CODES+ISSS '08 Proceedings of the 6th IEEE/ACM/IFIP international conference on Hardware/Software codesign and system synthesis
SPR: an architecture-adaptive CGRA mapping tool
Proceedings of the ACM/SIGDA international symposium on Field programmable gate arrays
Intermediate fabrics: virtual architectures for circuit portability and fast placement and routing
CODES/ISSS '10 Proceedings of the eighth IEEE/ACM/IFIP international conference on Hardware/software codesign and system synthesis
A low-overhead interconnect architecture for virtual reconfigurable fabrics
Proceedings of the 2012 international conference on Compilers, architectures and synthesis for embedded systems
Quantifying the cost and benefit of latency insensitive communication on FPGAs
Proceedings of the 2014 ACM/SIGDA international symposium on Field-programmable gate arrays
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While previous research has shown that FPGAs can efficiently implement many types of computations, their flexibility inherently limits their clock rate. Several research groups have attempted to address this by developing new architectures that include registered switchpoints within their interconnect. Unfortunately, this pipelined communication presents a new and difficult problem for detailed routing tools. Known as the N-Delay Routing Problem, it has been proven to be NP-Complete. Although there have been two heuristics developed to address this issue, both have certain limitations and neither approach considers timing during the routing process. While timing-driven conventional routing is largely considered to be a solved problem, there are several issues inherent to the N-Delay Routing problem make addressing timing particularly difficult. In this paper we discuss the nature of these problems and present a new timing-driven pipeline-aware router that produces as much as 60% better critical path delay than previous efforts.