Unisys Corporation

Terrence V Powderly

John A Landis

Aravindh Puthiyaparambil

Rajagopalan Subrahmanian

James R Hunter, Jr

Joseph H End, Iii

Timothy C Sell

Embodiments of the present invention provide a virtualization infrastructure that allows multiple guest operating systems to run and communicate amongst each other within a host hardware partition. The host system is divided into distinct logical/virtual partitions and special infrastructure partitions are implemented to control resource management and to control physical I/O device drivers that are, in turn, used by operating systems in other distinct logical/virtual guest partitions. Host hardware resource management runs as a tracking application in a resource management 'ultravisor' partition, while host resource management decisions are performed in a higher-level command partition based on policies maintained in a separate operations partition. The ultravisor partition maintains the master database of the hardware resource allocations and serves as a command channel to accept transactional requests for assignment of resources to partitions while also providing individual read-only views of individual partitions to the associated partition monitors.

Computer system para-virtualization using a hypervisor that is implemented in a partition of the host system

A virtualization infrastructure that allows multiple guest partitions to run within a host hardware partition. The host system is divided into distinct logical or virtual partitions and special infrastructure partitions are implemented to control resource management and to control physical I/O device drivers that are, in turn, used by operating systems in other distinct logical or virtual guest partitions. Host hardware resource management runs as a tracking application in a resource management 'ultravisor' partition, while host resource management decisions are performed in a higher level command partition based on policies maintained in a separate operations partition. Host hardware I/O management is implemented in special redundant I/O partitions. Operating systems in other logical or virtual partitions communicate with the I/O partitions via memory channels established by the ultravisor partion.

Virtual data center that allocates and manages system resources across multiple nodes

Numerous shortcomings exist in prior generation adapter cards for supporting remote consoles for multipartition computer systems. Emulation using memory in the adapter card supports some remote functions so that they appear to be resident on the host computer system to each partition. Additionally, the host computer system memory can be used in one mode to support the emulation of extended mode video console support functions. Scoreboarding and hardware compression are used to limit the volume of data required to be updated to support the emulation.

System for support of remote console by emulation of local console with multipath data flow structure

A system for providing, via a network, emulation of a console of a first computer system on a second, remotely located computer system on the network comprises an adapter card installed in the first computer system and a client program executing on the remotely located computer system. The adapter card comprises a local bus that interfaces to an input/output bus of the first computer system when the adapter card is connected to the first computer system, a graphics controller coupled to the local bus that interacts with the first computer system to generate a representation of a console screen of the first computer system, a network interface controller coupled to the local bus that provides a connection to the network, and a processor coupled to the local bus that determines changes in the representation of the console screen of the first computer system and that transmits information about the changes to the remotely located computer system via the network interface controller.

Growing community of inventors

East Fallowfield, PA, United States of America

Terrence V Powderly