The primary metric for memory bandwidth in multicore processors is that maximum sustained performance when using many cores. For most high-end processors these values have remained in the range of 75% to 85% of the peak DRAM bandwidth of the system over the past 15-20 years — an amazing accomplishment… read more
memory latency
The Surprising Effectiveness of Non-Overlapping, Sensitivity-Based Performance Models
This was a keynote presentation at the “2nd International Workshop on Performance Modeling: Methods and Applications” (PMMA16), June 23, 2016, Frankfurt, Germany (in conjunction with ISC16). The presentation discusses a family of simple performance models that I developed over the last 20 years — originally in support of processor and… read more
New Year’s Updates
As part of my attempt to become organized in 2019, I found several draft blog entries that had never been completed and made public. This week I updated three of those posts — two really old ones (primarily of interest to computer architecture historians), and one from 2018: July 2012:… read more