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behavior of Intel GPU cache

Fu_J_Intel
Employee
197 Views

Hi experts,

I wonder how Intel GPU manages its caches? For example,  is tiled format (of an image) more friendly to cache than linear format?

thanks,

Jeffrey

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Robert_I_Intel
Employee
197 Views

Hi Jeffrey,

Tiled format (images) read accesses go thru the sampler, which has its own L1 and L2 incoherent caches (initially, go thru L3$ and LLC$). Linear format accesses (buffers) go thru L3$ and LLC$. So that's the biggest difference.

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