Hardware based dynamic load balancing of message passing interface tasks
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United States of America Patent
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Feb 28, 2012
Grant Date -
Mar 5, 2009
app pub date -
Aug 28, 2007
filing date -
Aug 28, 2007
priority date (Note) -
Expired
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Abstract
Mechanisms for providing hardware based dynamic load balancing of message passing interface (MPI) tasks are provided. Mechanisms for adjusting the balance of processing workloads of the processors executing tasks of an MPI job are provided so as to minimize wait periods for waiting for all of the processors to call a synchronization operation. Each processor has an associated hardware implemented MPI load balancing controller. The MPI load balancing controller maintains a history that provides a profile of the tasks with regard to their calls to synchronization operations. From this information, it can be determined which processors should have their processing loads lightened and which processors are able to handle additional processing loads without significantly negatively affecting the overall operation of the parallel execution system. As a result, operations may be performed to shift workloads from the slowest processor to one or more of the faster processors.
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