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Part of the book series: Lecture Notes in Computer Science ((LNPSE,volume 8356))

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Barriers synchronize the state of many processing elements working in parallel. No worker may leave a barrier before all the others have arrived. High performance applications hide latency by keeping a large number of operations in progress asynchronously. Since barriers synchronize all these operations, maximum performance requires that barriers have as little overhead as possible. When some workers arrive at a barrier much later than others, the early arrivers must sit idle waiting for them. Split-mode barriers provide barrier semantics while also allowing the early arrivers to make progress on other tasks. In this paper we describe the process and several challenges in developing split-mode barriers in the OpenSHMEM programming environment.

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© 2014 Springer International Publishing Switzerland

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Raymond, M.A. (2014). Implementing Split-Mode Barriers in OpenSHMEM. In: Poole, S., Hernandez, O., Shamis, P. (eds) OpenSHMEM and Related Technologies. Experiences, Implementations, and Tools. OpenSHMEM 2014. Lecture Notes in Computer Science, vol 8356. Springer, Cham.

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-05214-4

  • Online ISBN: 978-3-319-05215-1

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