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I/O protocol for highly configurable multi-node processing system

  • US 6,105,122 A
  • Filed: 02/06/1998
  • Issued: 08/15/2000
  • Est. Priority Date: 02/06/1998
  • Status: Expired due to Term
First Claim
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1. A method of transferring data from a first node to a second node in a multi-processor system comprising a plurality of nodes coupled to an interconnect fabric, the nodes comprising a plurality of compute nodes and a plurality of I/O nodes, each I/O node coupled to a plurality of data storage devices, the method comprising the steps of:

  • generating a I/O request packet in a first node in response to an I/O request from an application executing in the first node, the I/O packet havinga data transfer request;

    an interconnect destination-side channel program;

    a first debit ID designating a second node buffer where the data request will be transmitted; and

    a first credit ID designating a first node buffer where the data responsive to the I/O request will be transmitted;

    transmitting the data request packet to a second node via the interconnect fabric; and

    executing the destination-side interconnect channel program to extract the first debit ID to transfer the data request to the second node buffer.

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