Branch Prediction types in K8 (AMD Hammer)

[adeno]

Hi,

Does anyone happen to have any detailed info on the AMD Hammer's branch predictor type? I've learned about the GAp, PAg, PAp, and GAg predictors (these are 2-level branch predictors) in my architecture class. Which of these fits Hammer?

I have this link from Hotchips.org which provides info about the Hammer core, but I cannot decipher the data to match that of the four predictors I listed above. Can anyone help me out here? A link to some information would be great.

Thanks in advance.

 

[SuperTool]

It's 2 bit 16K one, from page 5. I loaned my Patterson and Hennesy book to someone
Read This for more info. It's the last part of the lecture.

 

[adeno]

So I take it Hammer doesn't use a 2-level predictor but rather a 2-bit one? Somehow that just seems odd to me.. maybe I'm missing something here..

But thank you for that link though