Editing Distributed shared memory (section)

=== Home-centric request and response ===
In a home-centric system, the DSM will avoid having to handle request-response races between nodes by allowing only one transaction to occur at a time until the home node has decided that the transaction is finished—usually when the home has received every responding processor's response to the request.  An example of this is Intel's [[Intel QuickPath Interconnect|QPI]] home-source mode.<ref name=":0">{{cite book
| last1 = Sorin
| last2 = Hill
| last3 = Wood
| first1 = Daniel J.
| first2 = Mark D.
| first3 = David A.
| title = A Primer on Memory Consistency and Cache Coherence
| publisher = Morgan & Claypool
| year = 2011
| page = 174
| isbn = 978-16-0845564-5
}}</ref> The advantages of this approach are that it's simple to implement but its request-response strategy is slow and buffered due to the home node's limitations.