Patent ID: 8650262
Filing Date: 2014-02-11
Classification: G06F

Abstract:
1. A parallel computer that implements endpoint-based parallel data processing in a parallel active messaging interface (‘PAMI’) of the 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 compute nodes comprising computer processors operatively coupled to computer memory having disposed within it computer program instructions that, when executed by the computer processors, cause the parallel computer to function by: 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.