Hello, I have a problem when I want to reshape and permute dimensions of an array of 2^16 elements that doesn’t appear with an array of 2^n elements with n < 16. Does someone have an idea of the source of the problem? [15]

Here it is : function f(n) x = collect(1:(2^n)); y = reshape(x, ntuple(w -> 2, n)); z = permutedims(y, n:-1:1); end which error for any n > 15. I try it on my computer and my friend’s computer, both with Julia 0.6.

I can confirm that this does not work on Julia 0.6.1. I tried it on 0.5.2 and it kept on working all of the way up to f(21), but I didn’t try any higher because it was taking up too much time.

Please post the actual input and error message.

A likely explanation is that 15 is the default value of MAX_TUPLETYPE_LEN in InferenceParams ( inference.jl in Base). I don’t know which wizard to ask whether one can compile a method in a customized inference context.

Here is the whole code with the error message. n = 16 x = collect(1:(2^n)); y = reshape(x, ntuple(w -> 2, n)); z = permutedims(y, n:-1:1); ERROR: MethodError: no method matching checkdims_perm(::Array{Int64,2}, ::Array{Int64,16}, ::StepRange{Int64,Int64}) Closest candidates are: checkdims_perm(:…

Problem with permuting dimensions of multi dimensional arrays

General Usage

rdeits December 11, 2017, 9:34pm 2

Could you please post the actual code (and quote it with PSA: how to quote code with backticks) instead of a screenshot? Currently your error can’t be searched and your code can’t be copy-pasted.

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Problem with permuting dimensions of multi dimensional arrays

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