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Processors

Chen21
Journeyman III

About the relationship between wavefront execution and L1 L2 caching

Hi, I wonder how waves interact with caching.

Detailed description of the my question: 

A CU scheduler can process 40 * 64 = 2560 threads at a time. Each CU has a L1 cache.

Question 1: Are the 2560 threads sharing the L1 cache in the CU?

Question 2: does a wave access L2 cache only if L1 misses?

Question 3: Thinking from wavefront point of view, when will a cache line(L1 and L2) be invalidated ?

Thank you!

Chen21

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