How Does It Work?
•Using
the directory it is possible to maintain cache coherency in a DSM, but its complex (and time
consuming)
•To
illustrate, we work through the protocols to maintain memory coherency
•Concepts
–Events:
A read or write access fault
–Cache
fields these for local data, controller fields these for remotely allocated
data
–Proc/Proc communication is by packets through the
interconnection network