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- W2117494089 abstract "An asynchronous work-stealing implementation of dynamic load balance is implemented using Unified Parallel C (UPC) and evaluated using the Unbalanced Tree Search (UTS) benchmark [Olivier, S., et al., 2007]. The UTS benchmark presents a synthetic tree-structured search space that is highly imbalanced. Parallel implementation of the search requires continuous dynamic load balancing to keep all processors engaged in the search. Our implementation achieves better scaling and parallel efficiency in both shared memory and distributed memory settings than previous efforts using UPC [Olivier, S., et al., 2007] and MPI [Dinan, J., et al., 2007]. We observe parallel efficiency of 80% using 1024 processors performing over 85,000 total load balancing operations per second continuously. The UPC programming model provides substantial simplifications in the expression of the asynchronous work stealing protocol compared with MPI. However, to obtain performance portability with UPC in both shared memory and distributed memory settings requires the careful use of one sided reads and writes to minimize the impact of high latency communication. Additional protocol improvements are made to improve dissemination of available work and to decrease the cost of termination detection." @default.
- W2117494089 created "2016-06-24" @default.
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- W2117494089 date "2008-09-01" @default.
- W2117494089 modified "2023-10-16" @default.
- W2117494089 title "Scalable Dynamic Load Balancing Using UPC" @default.
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- W2117494089 doi "https://doi.org/10.1109/icpp.2008.19" @default.
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