N = 1024 ^ 2; A = [ones(N), ones(N), ones(N), ones(N)]; The naive way of summing the arrays in A would be to do sum(A). However, note the performance: julia> @btime sum(A); 7.968 ms (6 allocations: 24.00 MiB) It unnecessarily allocates an array of size N for each addition (3x8 MB). Is there a w…

Summing arrays efficiently

baggepinnen September 22, 2018, 2:20pm 10

Yes you are right!

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