On Tue, Mar 29, 2016 at 10:00 AM, 博陈 <[email protected]> wrote: > Actually, I know the arrays allocated in every loop, my problem is that I > don't know the strategy to pre-allocate such arrays. > In short, this is the pre-allocating problem of arrays like array a > described below: > > > n = 1024; nt = 1000; > dt = 0.1 > a = Array(Float64, n, n) > for i in 1:nt > t = i*dt > for j in eachindex(a) > a[j] = exp(pi * t) * a0 > end > ....... scripts to use a[j] for a single i........ > end > > In my problem, such arrays are hard to pre-allocate, do you have any > suggestions?
The code above shouldn't have any allocation in the loop? Can you point out the part of the code that allocates a lot in loops? > > 在 2016年3月29日星期二 UTC+8下午9:27:27，Stefan Karpinski写道： >> >> Have you tried: >> >> (a) calling @code_typewarn on your function >> (b) using the built-in profiler? >> >> >
