Abstract
Embedded systems are special purpose systems which perform pre-defined tasks with very specific requirements like high performance, low volume or low power. Most of the time, using a general purpose processor for such systems results in a design which is poor to meet the application specific requirement. On the other hand, ASIC design cycle is too costly and too slow for the embedded application market. Recent development in configurable processors significantly improved the performance metrics of a general purpose processor by coupling it with an application specific hardware. Although there has been a large amount of work in the literature to improve the performance and automation of such designs, little has been done to examine the power consumption of a system coupled with an application specific functional unit. Monitoring this power behavior may provide new directions in the ASIP design. We augmented wattch (a power simulator based on SimpleScalar) with a model of the power consumption of functional units (using a combination of RTL- and gate-level power modeling). Our results show that a well-designed custom instruction set may reduce register and memory accesses, and hence the overall power consumption of an embedded system.
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References
Halfhill, T.R.: Tensilica’s software makes hardware. Microprocessor Report (2003)
Halfhill, T.R.: ARC Cores encourages “plug-ins”. Microprocessor Report (2000)
Faraboschi, P., Brown, G., Fisher, J.A., Desoli, G., Homewood, F.: Lx: A technology platform for customizable VLIW embedded processing. In: Proceedings of the 27th Annual International Symposium on Computer Architecture, pp. 203–213 (2000)
Halfhill, T.R.: MIPS embraces configurable technology. Microprocessor Report (2003)
Cheung, N., Parameswaran, S., Henkel, J.: A quantitative study and estimation models for extensible instructions in embedded processors. In: Proceedings of the International Conference on Computer Aided Design, San Jose, Calif, pp. 183–189 (2004)
Biswas, P., Banerjee, S., Dutt, N., Ienne, P., Pozzi, L.: Performance and energy benefits of instruction set extensions in an FPGA soft core. In: Proceedings of the 19th International Conference on VLSI Design, Hyderabad, India, pp. 651–656 (2006)
Brooks, D., Tiwari, V., Martonosi, M.: Wattch: a framework for architectural-level power analysis and optimizations. In: Proceedings of the 27th Annual International Symposium on Computer Architecture, pp. 83–94 (2000)
Fei, Y., Ravi, S., Raghunathan, A., Jha, N.K.: Energy estimation for extensible processors. In: Proceedings of the Design, Automation and Test in Europe Conference and Exhibition, pp. 682–687 (2004)
Tiwari, V., Malik, S., Wolfe, A.: Power analysis of embedded software: A first step towards software power minimization. IEEE Transactions on Very Large Scale Integration (VLSI) Systems VLSI-2, 437–445 (1994)
Simunic, T., Benini, L., Micheli, G.D.: Cycle-accurate simulation of energy consuption in embedded systems. In: Proceedings of the 36th Design Automation Conference, New Orleans, La, pp. 867–872 (1999)
Wan, M., Ichikawa, Y., Lidsky, D., Rabaey, J.: An energy conscious methodology for early design exploration of heterogeneous DSPs. In: Proceedings of the IEEE Custom Integrated Circuit Conference—CICC 1998, Santa Clara, Calif., pp. 111–117. IEEE Computer Society Press, Los Alamitos (1998)
Ye, W., Vijaykrishnan, N., Kandemir, M.T., Irwin, M.J.: The design and use of SimplePower: a cycle-accurate energy estimation tool. In: Proceedings of the 37th Design Automation Conference, Los Angeles, Calif., pp. 340–345 (2000)
Bonzini, P., Pozzi, L.: Code transformation strategies for extensible embedded processors. In: Proceedings of the International Conference on Compilers, Architectures, and Synthesis for Embedded Systems, Seoul, South Korea, pp. 242–252 (2006)
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Bonzini, P., Harmanci, D., Pozzi, L. (2007). A Study of Energy Saving in Customizable Processors. In: Vassiliadis, S., Bereković, M., Hämäläinen, T.D. (eds) Embedded Computer Systems: Architectures, Modeling, and Simulation. SAMOS 2007. Lecture Notes in Computer Science, vol 4599. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73625-7_32
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DOI: https://doi.org/10.1007/978-3-540-73625-7_32
Publisher Name: Springer, Berlin, Heidelberg
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