RDMA server (OSI) global TCE tables
US7430615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Sep 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In remote direct memory access (RDMA) transfers in a multinode data processing system in which the nodes communicate with one another through communication adapters coupled to a switch or network, there is a need for the system to ensure efficient memory protection mechanisms across jobs. A method is thus desired for addressing virtual memory on local and remote servers that is independent of the process ID on the local and/or remote node. The use of global Translation Control Entry (TCE) tables that are accessed/owned by RDMA jobs and are managed by a device driver in conjunction with a Protocol Virtual Offset (PVO) address format solves this problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.