# Autodiff of vector inputs with Enzyme.jl (and possibly Optimization.jl)

**URL:** <https://discourse.julialang.org/t/autodiff-of-vector-inputs-with-enzyme-jl-and-possibly-optimization-jl/101485>\
**Category:** Optimization (Mathematical)\
**Tags:** question, optimization, sciml, enzyme\
**Created:** [July 11, 2023, 2:44pm UTC](https://discourse.julialang.org/t/autodiff-of-vector-inputs-with-enzyme-jl-and-possibly-optimization-jl/101485 "2023-07-11T14:44:10Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![wsmoses](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/wsmoses/32/26497_2.png) [@wsmoses](https://discourse.julialang.org/u/wsmoses)\
**Post date:** [August 15, 2023, 7:39pm UTC](https://discourse.julialang.org/t/autodiff-of-vector-inputs-with-enzyme-jl-and-possibly-optimization-jl/101485/8 "2023-08-15T19:39:17Z")

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That’s the error message as here, so I’ll link my answer here too: [Understanding an Enzyme Warning Message - #2 by wsmoses](https://discourse.julialang.org/t/understanding-an-enzyme-warning-message/102825/2)

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