In the NVIDIA GeForce 8800 GPU Architecture Overview (November 2006), there is an L2 cache in the block diagram but nothing is commented about an L2 cache anywhere in that paper (or another, actually). Is there an L2 texture cache?
I’m also looking at a Wen-mei Hwu’s paper (Shane Ryoo, Christopher I. Rodrigues, Sam S. Stone, Sara S. Baghsorkhi, Sain-Zee Ueng and Wen-mei W. Hwu; Program Optimization Study on a 128-Core GPU) which doesn’t say anything about an L2 cache either. They also say that the L1 cache has over 100 cycles of latency. Is that true? So many cycles?
If there really is an L2 cache, I’d like to know how many cycles of latency it has and, if it’s possible, how big it is.
Thank you :)