Providing a memory region or memory window access notification on a system area network
US8244826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Jun 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1466
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Mechanisms for providing a memory region/memory window (MR/MW) access notification on a system area network are provided. Whenever a previously allocated MR/MW is accessed, such as via a remote direct memory access (RDMA) read/write operation, a notification of the access is generated and written to a queue data structure associated with the MR/MW. In one illustrative embodiment, this queue data structure may be a MR/MW event queue (EQ) data structure that is created and used for all consumer processes and all MR/MWs. In other illustrative embodiments, the EQ is associated with a protection domain. In yet another illustrative embodiment, an event record may be posted to an asynchronous event handler in response to the accessing of the MR/MW. In another illustrative embodiment, a previously posted queue element may be used to generate a completion queue element in response to the accessing of the MR/MW.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.