Command replay for non-volatile dual inline memory modules
US11137941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2019 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Memory access commands are placed in a memory interface queue and transmitted from the memory interface queue to a heterogeneous memory channel coupled to a volatile dual in-line memory module (DIMM) and a non-volatile DIMM. Selected memory access commands that are placed in the memory interface queue are stored in a replay queue. The non-volatile reads that are placed in the memory interface queue are in a non-volatile command queue (NV queue). The method detects, based on information received over the heterogeneous memory channel, that an error has occurred requiring a recovery sequence. In response to the error, the method initiates the recovery sequence including (i) transmitting selected memory access commands that are stored in the replay queue, and (ii) transmitting non-volatile reads that are stored in the NV queue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.