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Parallels 13 user guide for mac#
Parallels 13 user guide software#

Hyper-V Discrete Device Assignment (DDA).

VMware Virtual Dedicated Graphics Acceleration (vDGA).

Parallels 13 user guide software#

The following software technologies implement fixed pass-through: As such, it has the lowest consolidation ratio and the highest cost, as each graphics-accelerated virtual machine requires an additional physical GPU. This technique achieves 96–100% of native performance and high fidelity, but the acceleration provided by the GPU cannot be shared between multiple virtual machines. In fixed pass-through or GPU pass-through (a special case of PCI pass-through), a GPU is accessed directly by a single virtual machine exclusively and permanently.

Parallels 13 user guide for mac#

Parallels Desktop for Mac 3D acceleration VMware Virtual Shared Graphics Acceleration (vSGA) VMGL for OpenGL) when it is not supported by the hypervisor's software package, although network delay and serialization overhead may outweigh the benefits.Īpplication support from API remoting virtualization technologies rCUDA for CUDA) or add support for typical APIs (e.g. Using a network interface instead (a common approach in distributed rendering), third-party software can add support for specific APIs (e.g. Hypervisors usually use shared memory between guest and host to maximize performance and minimize latency.

Applications on guest machines may be limited to few available APIs.

A large number of API entry points must be forwarded, and partial implementation of entry points may decrease fidelity.

Performance ranges from 86% to as low as 12% of native performance in applications that issue a large number of drawing calls per frame.

In pure API remoting, there is little isolation between virtual machines when accessing graphical APIs isolation can be improved using paravirtualization.

It is conceptually simple to implement, but it has several disadvantages: This technique allows sharing GPU resources between multiple guests and the host when the GPU does not support hardware-assisted virtualization. It may be considered a form of paravirtualization when combined with device emulation. In API remoting or API forwarding, calls to graphical APIs from guest applications are forwarded to the host by remote procedure call, and the host then executes graphical commands from multiple guests using the host's GPU as a single user.