I am trying to parallelize a simple histogram: n_bins = 20000000 n_elem = 100000000 hist = zeros(Int64, n_bins) for i = 1:n_elem bin = rand(UInt64)%n_bins + 1 hist[bin] += 1 end In Fortran&OpenMP I would just use a reduction on hist or I could locks, but I am new to julia and I don’t quite…

Parallelizing a histogram

oschulz June 13, 2020, 12:16pm 9

Exactly - we do have Atomic, but we’ll need something like atomic_add!(A::Array, x, idxs)

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