Performing collective operations in a distributed processing system

摘要

Methods, apparatuses, and computer program products for performing collective operations on a hybrid distributed processing system are provided. Embodiments include determining by at least one task that a parent of the task has failed to send the task data through the tree topology; and determining whether to request the data from a grandparent of the task or a peer of the task in the same tier in the tree topology; and if the task requests the data from the grandparent, requesting the data and receiving the data from the grandparent of the task through the second networking topology; and if the task requests the data from a peer of the task in the same tier in the tree, requesting the data and receiving the data from a peer of the task through the second networking topology.

主权项

1. Apparatus for performing collective operations on a hybrid distributed processing system, the hybrid distributed processing system including a plurality of compute nodes, each compute node having a plurality of tasks, each task assigned a unique rank, each compute node coupled for data communications by at least one data communications network implementing at least two different networking topologies; wherein the at least two networking topologies further comprise two independent data communications networks, and wherein a first networking topology comprises a tiered tree topology having a root task, and at least two child tasks, where the two child tasks are peers of one another in the same tier, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the steps of:
determining by at least one task that a parent of the task has failed to send the task data through the tree topology; and determining whether to request the data from a grandparent of the task or a peer of the task in the same tier in the tree topology; if the task requests the data from the grandparent, requesting the data and receiving the data from the grandparent of the task through the second networking topology; and if the task requests the data from a peer of the task in the same tier in the tree, requesting the data and receiving the data from a peer of the task through the second networking topology.