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- W2017704608 abstract "Barrier synchronization is a fundamental operation in parallel computation. In many contexts, at the point a process enters a barrier it knows that it has already processed all work required of it prior to the synchronization. It then commits to the barrier, in the sense that the process blocks until every other process has also committed to the barrier. This paper treats the alternative case, when a process cannot enter a barrier with the assurance that it has already performed all necessary pre-synchronization computation. The problem arises when the number of pre-synchronization messages to be received by a process is unknown, for example, in any computation that is largely driven by an unpredictable exchange of messages. We describe a O(log2 P) time barrier algorithm for such problems, study its performance on a large-scale parallel system, and consider extensions to general associative reductions, as well as associative parallel prefix computations." @default.
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- W2017704608 date "1995-04-01" @default.
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- W2017704608 title "Noncommittal barrier synchronization" @default.
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- W2017704608 doi "https://doi.org/10.1016/0167-8191(94)00101-f" @default.
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