Hi!

On 2021-08-09T15:55:07+0200, Tobias Burnus <tob...@codesourcery.com> wrote:
> Now that the GCN/OpenACC patches for this have been committed today,
> I think it makes sense to add it to the documentation.

Thanks for thinking of this.

> (I was told that some follow-up items are still pending, but as
> the feature does work ...)

ACK.

> Cf. also Andrew's talk of last year,
> https://linuxplumbersconf.org/event/7/contributions/749/attachments/560/988/AMD_GCN_Update_-_LPC_2020.pdf
> which I utilized when writing the attached wwwdocs patch.
>
> Comments and/or suggestions?

> gcc-12/changes.html (GCN): >1 workers per gang

ACK for that aspect specifically, but:

> --- a/htdocs/gcc-12/changes.html
> +++ b/htdocs/gcc-12/changes.html

> +  <li>When used as OpenACC device: the limitation of 1 worker per gang, 2 
> gangs
> +      per CU has been lifted; now up to 16 workers per gang and 40 gangs per 
> CU
> +      are supported. (Except that the hardware limit of 40 workers total may
> +      not be exceeded.)</li>

I haven't changed anything related to a "limitation of [...] 2 gangs per
CU has been lifted".  Maybe that has already been done earlier, maybe
that still has to be done?  I don't know -- Julian?


Grüße
 Thomas
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