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Add warning about using pocl_jll on top of script #295

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maleadt merged 1 commit into from
Mar 28, 2025
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Add warning about using pocl_jll on top of script #295

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5 changes: 5 additions & 0 deletions README.md
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Expand Up @@ -55,6 +55,11 @@ Available platforms: 3
· Intel(R) Arc(TM) A770 Graphics (fp16, il)
```

> [!WARNING]
> OpenCL is only computing the list of platforms [once](https://github.com/KhronosGroup/OpenCL-ICD-Loader/blob/d547426c32f9af274ec1369acd1adcfd8fe0ee40/loader/linux/icd_linux.c#L234-L238).
> Therefore if `using pocl_jll` is executed after `OpenCL.versioninfo()` or other calls to the OpenCL API
> then it won't affect the list of platforms available and you will need to restart the Julia session
> and run `using pocl_jll` before `OpenCL` is used.

## Basic example: vector add

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