Distributed allocation of system hardware resources for multiprocessor systems

摘要

A method of allocating hardware resources in a multiprocessor computer system which utilizes non-uniform memory access and distributed system resources across multiple nodes. The disclosure provides a method for allocating system resources across multiple nodes of a system communicating through a hardware device comprised of a tag and address crossbar system interconnecting node control devices. The method provides for allocation of transaction units or transaction identifiers in an allocating component for use in a multiple target component which may be in a distinct target node within the multiple node system. Based on the operations or requests that a target node receives from multiple external request source nodes, each requiring the use of target transaction unit objects such as transaction identification bits, the method provides inclusion of such information in the initial request to a target node which allows any data transmission between the source node and the target node, or the target node and the source node to be accomplished without any further intervention by the allocating component. Such component may be a local memory control agent or device. The method allows for reduction of system latency by communicating the identification of the hardware resource target, allocated by a tag and address crossbar, though the system data crossbar by attaching such information to the data to be communicated to the resource.