Victor Wen
EECS Department
University of California, Berkeley
Technical Report No. UCB/CSD-03-1294
November 2003
http://www2.eecs.berkeley.edu/Pubs/TechRpts/2003/CSD-03-1294.pdf
We explore the possibility of reducing energy consumed by on-chip buses via stateful and stateless coding techniques. We explore the design of a number of simple coding schemes and simulate them using a modified SimpleScalar simulator and SPEC benchmarks. We show an average of 36% savings in transitions on internal buses such as the reorder buffer and register file. To quantify actual power savings, we design a simple dictionary based encoder/decoder circuit in a 0.13-micron process, extract it as a netlist, and simulate its behavior under SPICE. Utilizing a realistic wire model with repeaters, we show that we can break even at median length scales of less than 11.5mm at 0.13 microns and project a break-even point of 2.7mm for a larger design at 0.07 microns.
BibTeX citation:
@techreport{Wen:CSD-03-1294, Author = {Wen, Victor}, Title = {Exploiting Prediction to Reduce Power on Buses}, Institution = {EECS Department, University of California, Berkeley}, Year = {2003}, Month = {Nov}, URL = {http://www2.eecs.berkeley.edu/Pubs/TechRpts/2003/6365.html}, Number = {UCB/CSD-03-1294}, Abstract = {We explore the possibility of reducing energy consumed by on-chip buses via stateful and stateless coding techniques. We explore the design of a number of simple coding schemes and simulate them using a modified SimpleScalar simulator and SPEC benchmarks. We show an average of 36% savings in transitions on internal buses such as the reorder buffer and register file. To quantify actual power savings, we design a simple dictionary based encoder/decoder circuit in a 0.13-micron process, extract it as a netlist, and simulate its behavior under SPICE. Utilizing a realistic wire model with repeaters, we show that we can break even at median length scales of less than 11.5mm at 0.13 microns and project a break-even point of 2.7mm for a larger design at 0.07 microns.} }
EndNote citation:
%0 Report %A Wen, Victor %T Exploiting Prediction to Reduce Power on Buses %I EECS Department, University of California, Berkeley %D 2003 %@ UCB/CSD-03-1294 %U http://www2.eecs.berkeley.edu/Pubs/TechRpts/2003/6365.html %F Wen:CSD-03-1294