Transactional memory that performs an atomic metering command
US8775686B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Nov 10, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transactional memory (TM) receives an Atomic Metering Command (AMC) across a bus from a processor. The command includes a memory address and a meter pair indicator value. In response to the AMC, the TM pulls an input value (IV). The TM uses the memory address to read a word including multiple credit values from a memory unit. Circuitry within the TM selects a pair of credit values, subtracts the IV from each of the pair of credit values thereby generating a pair of decremented credit values, compares the pair of decremented credit values with a threshold value, respectively, thereby generating a pair of indicator values, performs a lookup based upon the pair of indicator values and the meter pair indicator value, and outputs a selector value and a result value that represents a meter color. The selector value determines the credit values written back to the memory unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.