Intel QuickPath in Dr. Dobb’s

Dr. Dobb’s ran an article early last week with a useful look into Intel’s QuickPath interconnect

The architecture of the Intel QuickPath Interconnect (Intel QPI), like many components in a computer system, is comprised of a number layers. Each of these layers performs a distinct function in controlling the logical operation of the Intel QPI. This article introduces the four architectural layers of the Intel QPI — the physical, link, routing, protocol layers — and introduces other aspects of the architecture including performance and reliability, as well as some initial design considerations for a system using Intel QPI.