Virtualization overhead

A virtualization overhead model determines how much performance a GPU loses when it is shared by virtual machines. The overhead lowers the capacity the GPU can supply. It is set with the virtualizationOverHeadModel field of a GPU. The default is NONE.

The type selects the model:

Type	Fields	Behaviour
NONE		No overhead, as with GPU pass-through. This is the default.
CONSTANT	percentageOverhead	A fixed overhead, as a fraction of the capacity. When percentageOverhead is omitted, 0.05 (5%) is used.
SHARE_BASED		An overhead that depends on the number of virtual machines sharing the GPU, based on Garg et al., Empirical Analysis of Hardware-Assisted GPU Virtualization.

Example

"virtualizationOverHeadModel": {
    "type": "CONSTANT",
    "percentageOverhead": 0.25
}