Submission + - Three way AMD Opteron server found (theinquirer.net)
Abdul writes: "It is not every day you see a three way computer. Slice is a three socket Opteron machine with two PCIe slots and two Infiniband 4x ports. Why would you want three sockets rather than four? Easy, latency. Any CPU in a 3S system is one hop away from any other CPU. In a 4S system, you can be two hops away. This adds latency, and more importantly, you take a big hit on cache coherency latency. This kills performance.
http://www.theinquirer.net/?article=41610"
http://www.theinquirer.net/?article=41610"
