I run the code below, and find we need more times when manipulate the array at the first time. I want to know why, and can we avoid it? function test() a = Vector{ComplexF64}(undef, 2^25) @time fill!(a, 0.0+0.0im) @time fill!(a, 1.0+0.0im) @time fill!(a, 2.0+0.0im) println() end functio…

Why need to pay more time when access the array at first time?

zhijie_sun August 5, 2024, 4:29pm 3

Oh, that makes sense. Thank you!

Topic		Replies	Views
Slow package load after initially starting Julia on Windows General Usage	2	120	May 16, 2024
Julia slower in Windows Performance	16	3333	February 23, 2019
Why does a vector with 10 times more elements takes 2x-5x less time to pre-allocate? Performance question	14	444	October 30, 2024
Memory allocations when returning vectors General Usage array , memory-allocation	15	1559	June 6, 2018
empty matrix creation Performance	2	581	December 21, 2018