An Improved Hotspot Block-based Thermal Model with Granularity Considerations (Extended Discussion)

Report
Authors:Huang, Wei, Department of Computer ScienceUniversity of Virginia Sankaranarayanan, K, Department of Computer ScienceUniversity of Virginia Ribando, R, Department of Computer ScienceUniversity of Virginia Stan, Mircea, Department of Computer ScienceUniversity of Virginia Skadron, Kevin, Department of Computer ScienceUniversity of Virginia
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.

Rights:
All rights reserved (no additional license for public reuse)
Language:
English
Source Citation:

Huang, Wei, K Sankaranarayanan, R Ribando, Mircea Stan, and Kevin Skadron. "An Improved Hotspot Block-based Thermal Model with Granularity Considerations (Extended Discussion)." University of Virginia Dept. of Computer Science Tech Report (2007).

Publisher:
University of Virginia, Department of Computer Science
Published Date:
2007