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Endpoint-based parallel data processing in a parallel active messaging interface of a parallel computer

  • US 8,804,488 B2
  • Filed: 11/09/2012
  • Issued: 08/12/2014
  • Est. Priority Date: 12/09/2010
  • Status: Expired due to Fees
First Claim
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1. A method of endpoint-based parallel data processing in a parallel active messaging interface ('"'"'PAMI'"'"') of a parallel computer, the parallel computer comprising a plurality of compute nodes that execute a parallel application, the PAMI comprising data communications endpoints, each endpoint comprising a specification of data communications parameters for a thread of execution on a compute node, including specifications of a client, a context, and a task, the endpoints coupled for data communications through the PAMI, the method comprising:

  • establishing by an application-level entity, for collective operations of the PAMI, a data communications geometry, the geometry specifying, for tasks representing processes of execution of the parallel application, a set of endpoints that are used in collective operations of the PAMI, including a plurality of endpoints for one of the tasks;

    receiving in one or more endpoints of the geometry an instruction for a collective operation, the instruction specifying communications of transfer data among the endpoints of the geometry; and

    executing the instruction for a collective operation through the endpoints in dependence upon the geometry, including dividing data communications operations among the plurality of endpoints for one of the tasks.

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