RDMA server (OSI) global TCE tables

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 i...

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Bibliographische Detailangaben
Hauptverfasser: CHAUDHARY PIYUSH, MARTIN STEVEN J, GOSCINSKI JASON E, BLACKMORE ROBERT S, HOUSTON JOHN S, HELMER LEONARD W.JR
Format: Patent
Sprache:eng
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Zusammenfassung: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.