Reconfigurable interconnect with multiplexer for flexible processor partitioning in a server computer

Abstract

A server computer can have multiple potential configurations depending on a state of an input signal. Interconnect buses between processors in a server computer can be reconfigured on startup or dynamically ('hot add/drop') by one or more multiplexers, thereby allowing the server computer to be flexibly partitioned into custom arrangements of processors, to maximize or change interconnect bandwidth between connected processors in a partition, or to minimize or reduce impact (“blast radius”) due to failed processors or interconnect buses. Each processor can have its own configuration logic to allow partitioning of the server computer as small as a single socket. In an alternative configuration, a common configuration logic can be partitioned and act as separate configuration logics for each partition.