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- W2436514525 abstract "Given an array $mathcal{A}$ of $n$ elements and a value $2 leq k leq n$, a frequent item or $k$-majority element is an element occurring in $mathcal{A}$ more than $n/k$ times. The $k$-majority problem requires finding all of the $k$-majority elements. In this paper we deal with parallel shared-memory algorithms for frequent items; we present a shared-memory version of the Space Saving algorithm and we study its behavior with regard to accuracy and performance on many and multi-core processors, including the Intel Phi accelerator. We also investigate a hybrid MPI/OpenMP version against a pure MPI based version. Through extensive experimental results we prove that the MPI/OpenMP parallel version of the algorithm significantly enhances the performance of the earlier pure MPI version of the same algorithm. Results also prove that for this algorithm the Intel Phi accelerator does not introduce any improvement with respect to the Xeon octa-core processor." @default.
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- W2436514525 date "2016-06-15" @default.
- W2436514525 modified "2023-09-27" @default.
- W2436514525 title "Parallel Space Saving on Multi and Many-Core Processors" @default.
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