Microsoft Technology Licensing, LLC

Vladimir Pavlov

Bradley Post

B Anil Kumar

Parag Chakraborty

Varadharajan Ponnappan

Pareekshit Singh

Described herein is providing GPU resources across machine boundaries for a virtual machine that migrates between servers. Data centers tend to have racks of servers that have limited access to GPUs. Accordingly, disclosed herein is providing GPU resources to computing devices that have limited access to GPUs across machine boundaries.

Delivering GPU resources to a migrating virtual machine

An invention is disclosed for effectuating direct memory access (DMA) transfers by a guest operating system of a child partition. A guest operating system is presented with virtualized resources rather than physical resources&#x2014;e.g. a virtualized processor, virtualized memory, and a virtualized DMA controller. When the guest OS attempts to initiate a DMA transfer using the virtualized DMA controller, the child partition detects this, and directs the physical DMA controller to conduct the DMA transfer.

Hardware assisted inter hypervisor partition data transfers

Described herein is providing GPU resources across machine boundaries. Data centers tend to have racks of servers that have limited access to GPUs. Accordingly, disclosed herein is providing GPU resources to computing devices that have limited access to GPUs across machine boundaries.

Delivering GPU resources across machine boundaries

Exemplary techniques for recovering from a graphics processor reset are herein disclosed. In an exemplary embodiment, a 3D graphics service managercan detect that a graphics processing unit reset and can restart a rendering process configured to render 3D graphics for a virtual machine and cause a graphics buffer to be established between the rendering process and the virtual machine. In addition to the foregoing, other aspects are described in the detailed description, claims, and figures.

Dynamic virtual device failure recovery

An invention is disclosed for offloading operations, such data transfers, of a guest partition to a host partition. A guest operating system is presented with virtualized resources rather than physical resources&#x2014;e.g. a guest virtualized processor, guest virtualized memory space, and a guest virtualized direct memory access (DMA) controller. The guest partition can detect the guest operation system attempt to initiate a data transfer, and can instruct the host partition to perform the data transfer. The guest partition need not perform the data transfer using the guest virtual resources. The host partition can perform the data transfer to a remote computing as instructed by the guest partition without copying the data to the host virtualized memory space. The host partition can provide a message to the guest partition indicative of a status of the data transfer.

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San Jose, CA, United States of America

Vladimir Pavlov