Independent tuning of multiple hardware prefetchers
US10303609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Nov 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of apparatuses, methods, and systems for independent tuning of multiple hardware prefetchers are described. In an embodiment, an apparatus includes a processor core, a cache memory, a hardware prefetcher, and a prefetch tuner. The hardware prefetcher is to prefetch data for the processor core from a system memory to the cache memory. The prefetch tuner is to adjust a prefetch rate of the hardware prefetcher based on a fraction of late prefetches. The prefetch tuner includes a late prefetch counter to count a number of late prefetches for the hardware prefetcher, a prefetch counter to count a number of prefetches for the hardware prefetcher, and a late prefetch calculator to calculate the fraction of late prefetches based on the number of late prefetches and the number of prefetches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.