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RDMA systems and methods for sending commands from a source node to a target node for local execution of commands at the target node

  • US 20080109573A1
  • Filed: 11/08/2006
  • Published: 05/08/2008
  • Est. Priority Date: 11/08/2006
  • Status: Abandoned Application
First Claim
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1. In a multi-node computer system having a plurality of interconnected processing nodes, a method of issuing a direct memory access (DMA) command by a first node to be executed by a DMA engine at a second node, said DMA engine being capable of performing DMA data transfers and of executing pre-defined DMA commands, the method comprising:

  • at a first node, forming a packet containing the DMA command;

    sending the packet to the second node via the interconnection topology the second node receiving the packet and validating that the packet complies with a predefined trust relationship;

    if the packet complies with the predefined trust relationship, removing the DMA command from the packet and enqueuing the DMA command onto a command queue of the DMA engine at the second node; and

    processing the validated DMA command by the DMA engine at the second node.

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