# How to generate a random number in CUDA kernel function

**URL:** <https://discourse.julialang.org/t/how-to-generate-a-random-number-in-cuda-kernel-function/50364>\
**Category:** GPU\
**Tags:** question\
**Created:** [November 18, 2020, 9:14am UTC](https://discourse.julialang.org/t/how-to-generate-a-random-number-in-cuda-kernel-function/50364 "2020-11-18T09:14:14Z")\
**Posts on this page:** 1\
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**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:** [November 18, 2020, 1:04pm UTC](https://discourse.julialang.org/t/how-to-generate-a-random-number-in-cuda-kernel-function/50364/2 "2020-11-18T13:04:00Z")

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Host `rand` calls don’t work on the GPU. We also don’t support the CURAND device API for now. See [Generating Random Number from inside Kernel](https://discourse.julialang.org/t/generating-random-number-from-inside-kernel/8071) for possible workarounds.

IIRC @tkf also had a solution, maybe he can elaborate (Slack has eaten the history).

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