Resource request and transfer in a multi-node distributed system

摘要

Selective resource migration is disclosed. A computer system includes physical memory and a plurality of physical processors. Each of the processors has one or more cores and each core instantiates one or more virtual processors that executes program code. Each core is configured to invoke a hyper-kernel on its hosting physical processor when the core cannot access a portion of the physical memory needed by the core. The hyper-kernel selectively moves the needed memory closer to a location accessible by the physical processor or remaps the virtual processor to another core.

主权项

1. A computer system, comprising:
a plurality of physical nodes, wherein an operating system is run collectively across the plurality of physical nodes; wherein in response to receipt, at a first physical node in the plurality, of a request from a second physical node in the plurality for a resource, a determination is made at the first physical node whether to accept or deny the request for the resource, and wherein the request for the resource is associated with a stalling event on the second physical node; wherein a response is provided from the first physical node to the second physical node based at least in part on the determination; and wherein the request for the resource is denied in the event that the resource has been or is being transferred to a third physical node in the plurality of physical nodes, and wherein the response provided to the second physical node includes an identifier of the third physical node to which the requested resource has been or is being transferred.