[Openmp-commits] [PATCH] D116908: [OpenMP][1/3] Introduce the KernelEnvironment into the device runtimes

Fri Jan 21 17:12:47 PST 2022

ye-luo added a comment.

In D116908#3262918 <https://reviews.llvm.org/D116908#3262918>, @jdoerfert wrote:

> In D116908#3262836 <https://reviews.llvm.org/D116908#3262836>, @ye-luo wrote:
>
>> It sounds like such info will be passed from host to the device once per kernel and the performance impact is negligible. Right?
>
> The information is directly baked into the device image (in form of globals). 
> The transfer happens as you load the image, basically a few extra bytes per kernel but we had most of the things before as separate globals already anyway.
> There is no kernel start cost to speak of, at least I don't expect any.

Thanks for the clarification.

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  https://reviews.llvm.org/D116908/new/

https://reviews.llvm.org/D116908