Advanced Computer Architecture Chapter 7.64
Finding your data
How does a CPU find a
valid copy of a specified address’s data?
1.Translate virtual
address to physical
2.Physical address
includes bits which identify “home” node
3.Home node is where
DRAM for this address resides
4.But current valid
copy may not be there – may be in another CPU’s cache
5.Home node holds
pointer to sharing chain, so always knows where valid copy can be found