# What's the state of Automatic Differentiation in Julia January 2023?

**URL:** <https://discourse.julialang.org/t/whats-the-state-of-automatic-differentiation-in-julia-january-2023/92473>\
**Category:** General Usage\
**Tags:** autodiff\
**Created:** [January 3, 2023, 11:24pm UTC](https://discourse.julialang.org/t/whats-the-state-of-automatic-differentiation-in-julia-january-2023/92473 "2023-01-03T23:24:37Z")\
**Posts on this page:** 1\
**Showing post:** 21

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**Author:** ![mohamed82008](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mohamed82008/32/18171_2.png) [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Post date:** [May 6, 2023, 4:45pm UTC](https://discourse.julialang.org/t/whats-the-state-of-automatic-differentiation-in-julia-january-2023/92473/21 "2023-05-06T16:45:28Z")

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> [@ChrisRackauckas](#):
>
> ```julia
> @show bx - bx2
> 
> #=
> 2-element Vector{Float64}:
> -9.992007221626409e-16
> -1.7763568394002505e-15
> =#
> 
> ```

On my M1 and Julia 1.9 rc3 with Enzyme#main, I am getting a difference between Enzyme and Zygote gradients of

```julia
2-element Vector{Float64}:
 0.15407736749039058
 0.22841827115822566

```

by running the same code above.

Edit: also `] test Enzyme` causes a segfault. Is the M1 not supported by Enzyme?

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