CSC/ECE 506 Fall 2007/wiki2 7 ss: Difference between revisions
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== Disadvantages == | == Disadvantages == | ||
Cache-to-cache sharing adds complexity to bus-based protocol in that main memory must wait until it is certain that no cache will supply the data before driving the bus and also if the data resides in multiple caches, a selection algorithm is needed to determine which one will provide the data. | |||
== References == | == References == | ||
Revision as of 20:24, 21 September 2007
Cache-to-Cache Sharing
Cache-to-cache sharing is a technique to supply the block for a BusRd(Bus Read) transaction from cache instead of main memory. Stanford DASH multiprocessor used cache-to-cache transfers.
Advantages
Disadvantages
Cache-to-cache sharing adds complexity to bus-based protocol in that main memory must wait until it is certain that no cache will supply the data before driving the bus and also if the data resides in multiple caches, a selection algorithm is needed to determine which one will provide the data.