Rapid Energy Estimation for Hardware-Software Codesign Using FPGAs
EURASIP Journal on Embedded Systems volume 2006, Article number: 098045 (2006)
By allowing parts of the applications to be executed either on soft processors (as software programs) or on customized hardware peripherals attached to the processors, FPGAs have made traditional energy estimation techniques inefficient for evaluating various design tradeoffs. In this paper, we propose a high-level simulation-based two-step rapid energy estimation technique for hardware-software codesign using FPGAs. In the first step, a high-level hardware-software cosimulation technique is applied to simulate both the hardware and software components of the target application. High-level simulation results of both software programs running on the processors and the customized hardware peripherals are gathered during the cosimulation process. In the second step, the high-level simulation results of the customized hardware peripherals are used to estimate the switching activities of their corresponding register-transfer/gate level ("low-level") implementations. We use this information to employ an instruction-level energy estimation technique and a domain-specific energy performance modeling technique to estimate the energy dissipation of the complete application. A Matlab/Simulink-based implementation of our approach and two numerical computation applications show that the proposed energy estimation technique can achieve more than 6000x speedup over low-level simulation-based techniques while sacrificing less than 10% estimation accuracy. Compared with the measured results, our experimental results show that the proposed technique achieves an average estimation error of less than 12%.
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Ou, J., Prasanna, V.K. Rapid Energy Estimation for Hardware-Software Codesign Using FPGAs. J Embedded Systems 2006, 098045 (2006). https://doi.org/10.1155/ES/2006/98045