Leonel Sousa,

Inesc-ID

Abstract:

The midlifekicker metric is presented, mainly for evaluating microarchitectures mostly during the design process. We assume a microarchitecture designed at a time T-1 and estimate if a new microarchitecture projected for time T has really advantages over the microarchitecture designed at T-1 and remapped on the same technology at time T. We consider that microarchitects minimize the product cycles per instruction (CPI) x cycle time and estimate performance based on CPI with a “soft-threshold” to include cycle time product effects. Experimental results are presented for different IA-32 based processors. For the considered microarchitectures, it is shown that the performance has not been significantly improved in the last few years.

 

Date: 2005-Sep-14     Time: 11:00:00     Room: INESC-ID, Room 425


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