Broadcasting messages between execution slices for issued instructions indicating when execution results are ready
US10445100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Apr 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3891
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for transmitting data between execution slices of a multi-slice processor including receiving, by an execution slice, a broadcast message comprising an instruction tag (ITAG) for a producer instruction, a latency, and a source identifier; determining that an issue queue in the execution slice comprises an ITAG for a consumer instruction, wherein the consumer instruction depends on result data from the producer instruction; calculating a cycle countdown using the latency and the source identifier; determining that the cycle countdown has expired; and in response to determining that the cycle countdown has expired, reading the result data from the producer instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.