Whats holding ~100% D GUI back?

[Jab]

On Friday, 29 November 2019 at 10:12:32 UTC, Ethan wrote:
> On Friday, 29 November 2019 at 05:16:08 UTC, Jab wrote:
>> IIRC GPUs are limited in what they can do in parallel, so if 
>> you only need to do 1 things for a specific job the rest of 
>> the GPU isn't really being fully utilized.
>
> Yeah, that's not how GPUs work. They have a number of shader 
> units that execute on outputs in parallel. It used to be an 
> explicit split between vertex and pixel pipelines in the early 
> days, where it was very easy to underutilise the vertex 
> pipeline. But shader units have been unified for a long time. 
> Queue up a bunch of outputs and the driver and hardware will 
> schedule it properly.

Wasn't really talking about different processes such as that. You 
can't run 1000s of different kernels in parallel. In graphical 
terms it'd be like queuing up a command to draw a single pixel. 
While that single pixel is drawing, the rest of the stack 
allocated to that kernel would be idle. It wouldn't be able to be 
utilized by another kernel.