Stride prefetching across memory pages
US10671535B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Sep 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/655
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A prefetcher maintains the state of stored prefetch information, such as a prefetch confidence level, when a prefetch would cross a memory page boundary. The maintained prefetch information can be used both to identify whether the stride pattern for a particular sequence of demand requests persists after the memory page boundary has been crossed, and to continue to issue prefetch requests according to the identified pattern. The prefetcher therefore does not have re-identify a stride pattern each time a page boundary is crossed by a sequence of demand requests, thereby improving the efficiency and accuracy of the prefetcher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.