Patent · US Active

Method and computer system for providing remote direct memory access

US7921177B2 · kind B2 · utility

8Cited by

2References

10Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Christoph Raisch · Gerlingen, DE
Benjamin Bock · Reinheim, DE
Christian Stoeger · Wien, AT
Benedikt Waldvogel · Stegen, DE
Michael Prilop · Leipzig, DE

Key dates

Filing date	Jul 11, 2008
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Apr 23, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L69/16
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method for providing remote direct memory access (RDMA) between two computers, preferably between central processing units (CPUs) and a functional subsystem of a computer system as part of their network communication, e.g. using TCP/IP. Tasks of analyzing network protocol data and the actual RDMA operations can be offloaded to the functional subsystem with this method. Further, the functional subsystem cannot compromise the status of the first computer system as only access to certain allowed memory locations is granted by a memory protection unit during phases of actual data transfer between the functional subsystem and the CPUs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.