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An Improved Hotspot Block-Based Thermal Model With Granularity Considerations (Extended Discussion)

Huang, Wei; Sankaranarayanan, K; Ribando, R; Stan, Mircea; Skadron, Kevin
Format
Report
Author
Huang, Wei
Sankaranarayanan, K
Ribando, R
Stan, Mircea
Skadron, Kevin
Abstract
This technical report describes our most recent improve- ments to the HotSpot thermal model. First, in response to a previous paper in WDDD 2006 [1] that cites some accuracy shortcomings, we improve treatment in HotSpot�s �block model� of high aspect-ratio blocks, high power densities, and convection boundary conditions. These improvement sare included in the newest release of the HotSpot software, version 4.0. Second, to help guide users� modeling efforts and choice of modeling resolution, we propose an analyt- ical approach to find the relationship between the power modeling granularity and the associated peak temperature rise at that granularity, i.e. the relationship between the size and peak temperature of a uniform heat source. We theoret- ically confirm the existence of a strong spatial temperature low-pass filtering effect: a tiny heat source is much cooler than a large heat source with the same power density.
Language
English
Date Received
2012-10-29
Published
University of Virginia, Department of Computer Science, 2007
Published Date
2007
Collection
Libra Open Repository
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