DocumentCode :
438393
Title :
Fast computation of the temperature distribution in VLSI chips using the discrete cosine transform and table look-up
Author :
Zhan, Yong ; Sapatnekar, Sachin S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Volume :
1
fYear :
2005
fDate :
18-21 Jan. 2005
Firstpage :
87
Abstract :
Temperature-related effects are critical in determining both the performance and reliability of VLSI circuits. Accurate and efficient estimation of the temperature distribution corresponding to a specific circuit layout is indispensable in physical design automation tools. In this paper, we propose a highly accurate fast algorithm for computing the on-chip temperature distribution due to power sources located on the top surface of the chip. The method is a combination of several computational techniques including the Green function method, the discrete cosine transform (DCT), and the table look-up technique. The high accuracy of the algorithm comes from the fully analytical nature of the Green function method, and the high efficiency is due to the application of the fast Fourier transform (FFT) technique to compute the DCT and later obtaining the temperature field for any power source distribution using the pre-calculated look-up table. Experimental results have demonstrated that our method has a relative error of below 1% compared with commercial computational fluid dynamic (CFD) softwares for thermal analysis, while the efficiency of our method is orders of magnitude higher than the direct application of the Green function method.
Keywords :
Green´s function methods; VLSI; discrete cosine transforms; integrated circuit layout; integrated circuit reliability; table lookup; temperature distribution; Green function method; VLSI chips; VLSI circuits; circuit layout; computational fluid dynamic softwares; design automation tools; discrete cosine transform; fast Fourier transform; on-chip temperature distribution; power source distribution; table look-up; temperature-related effects; thermal analysis; Algorithm design and analysis; Application software; Circuits; Computational fluid dynamics; Design automation; Discrete cosine transforms; Distributed computing; Green function; Temperature distribution; Very large scale integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Design Automation Conference, 2005. Proceedings of the ASP-DAC 2005. Asia and South Pacific
Print_ISBN :
0-7803-8736-8
Type :
conf
DOI :
10.1109/ASPDAC.2005.1466136
Filename :
1466136
Link To Document :
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