# @cuda max\_registers not registered as a key word argument?

**URL:** <https://discourse.julialang.org/t/cuda-max-registers-not-registered-as-a-key-word-argument/111695>\
**Category:** GPU\
**Created:** [March 16, 2024, 1:01pm UTC](https://discourse.julialang.org/t/cuda-max-registers-not-registered-as-a-key-word-argument/111695 "2024-03-16T13:01:35Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Ahmed\_Salih](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ahmed_salih/32/206579_2.png) [@Ahmed\_Salih](https://discourse.julialang.org/u/Ahmed_Salih)\
**Post date:** [March 16, 2024, 1:01pm UTC](https://discourse.julialang.org/t/cuda-max-registers-not-registered-as-a-key-word-argument/111695/1 "2024-03-16T13:01:36Z")

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```julia
ERROR: LoadError: ArgumentError: Unsupported keyword argument 'max_registers'

```

And I am applying it as shown in the documentation:

`@cuda max_registers=32`

> **[Performance Tips · CUDA.jl](https://cuda.juliagpu.org/stable/tutorials/performance/)**
>
> Documentation for CUDA.jl.

 ![image](https://global.discourse-cdn.com/julialang/original/3X/c/d/cd48ae8b0f305b53534856bfdcb8956838e777b1.png)

Kind regards

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<div class="post-metadata">

**Author:** ![maleadt](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/maleadt/32/10097_2.png) [@maleadt](https://discourse.julialang.org/u/maleadt)\
**Post date:** [March 17, 2024, 8:49am UTC](https://discourse.julialang.org/t/cuda-max-registers-not-registered-as-a-key-word-argument/111695/2 "2024-03-17T08:49:18Z")

</div>

The kwarg is named `maxregs`, just as in CUDA C. This is a typo in the docs.

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<div class="post-metadata">

**Author:** ![Ahmed\_Salih](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ahmed_salih/32/206579_2.png) [@Ahmed\_Salih](https://discourse.julialang.org/u/Ahmed_Salih)\
**Post date:** [March 17, 2024, 7:24pm UTC](https://discourse.julialang.org/t/cuda-max-registers-not-registered-as-a-key-word-argument/111695/3 "2024-03-17T19:24:47Z")

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I confirm it works, was just about to fork and fix, but saw you already did it! Awesome 🙂

Thank you!