Importance

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Abstract

Methods and systems for enabling remote programmed I/O to be carried out across a “lossy” network are provided. According to one embodiment, a node maps a portion of a remote memory of a remote node into its physical address space. MTMs conforming to a processor bus protocol are received by a network interface of the node. The MTMs destined for the remote node are encapsulated within network packets. Each network packet is assigned a sending priority based upon a transaction type of the encapsulated MTM and based upon ordering rules associated with the processor bus protocol. The network packets are organized into groups based upon sending priority and transmitted to the remote node via a lossy network according to the sending priorities. It is ensured that a particular subset of the network packets having a particular sending priority is received by the remote node in a proper sequence.

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First Claim