Device, system and method for selectively dropping software prefetch instructions
US12111772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Oct 8, 2024 |
| Priority date | — |
| Expiry date | Nov 20, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques and mechanisms for providing information to determine whether a software prefetch instruction is to be executed. In an embodiment, one or more entries of a translation lookaside buffer (TLB) each include a respective value which indicates whether, according to one or more criteria, corresponding data has been sufficiently utilized. Insufficiently utilized data is indicated in a TLB entry with an identifier of an executed instruction to prefetch the corresponding data. An eviction of the TLB entry results in the creation of an entry in a registry of prefetch instructions. The entry in the registry includes the identifier of the executed prefetch instruction, and a value indicating a number of times that one or more future prefetch instructions are to be dropped. In another embodiment, execution of a subsequent prefetch instruction—which also corresponds to the identifier—is prevented based on the registry entry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.