Issue No. 01 - January-June (2008 vol. 7)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/L-CA.2008.3
Alok Choudhary , IEEE
Serkan Ozdemir , IEEE
Joseph Zambreno , IEEE
Abhishek Das , IEEE
Gokhan Memik , IEEE
As transistor feature sizes continue to shrink intothe sub-90nm range and beyond, the effects of process variationson critical path delay and chip yields have amplified. A commonconcept to remedy the effects of variation is speed-binning, bywhich chips from a single batch are rated by a discrete range offrequencies and sold at different prices. In this paper, we discussstrategies to modify the number of chips in different bins andhence enhance the profits obtained from them. Particularly, wepropose a scheme that introduces a small Substitute Cacheassociated with each cache way to replicate the data elementsthat will be stored in the high latency lines. Assuming a fixedpricing model, this method increases the revenue by as much as13.8% without any impact on the performance of the chips.
Computer Architecture, Cache Memories, Process Variations, Fault-tolerant Computing.
Alok Choudhary, Serkan Ozdemir, Joseph Zambreno, Abhishek Das, Gokhan Memik, "Microarchitectures for Managing Chip Revenues under Process Variations", IEEE Computer Architecture Letters, vol. 7, no. , pp. 5-8, January-June 2008, doi:10.1109/L-CA.2008.3