[mlpack-git] [mlpack/mlpack] LSHSearch Parallelization (#700)
Ryan Curtin
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Thu Jul 7 16:17:24 EDT 2016
> @@ -822,13 +861,13 @@ void LSHSearch<SortPolicy>::Search(const arma::mat& querySet,
>
> // An informative book-keeping for the number of neighbor candidates
> // returned on average.
> + // Make atomic to avoid race conditions when multiple threads are running
> + #pragma omp atomic
> avgIndicesReturned += refIndices.n_elem;
Could we use a reduction here in the parallel for definition? i.e. `reduction(+,avgIndicesReturned)`. Then you wouldn't need an atomic here. It might speed things up (not sure how much).
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