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Glossary
GPU - Graphics Processing Unit
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DB Schema changes:
New tables
op_host_gpu_groups (id, group_name, host_id, update_time) : This table contains the mapping between host and available pci_devices in that host.
Field
Type
NULL
Key
Default
Comments
id
bigint(20) unsigned
NO
PRI
NULL
auto_increment
group_id
varchar(40)
NO
NULL
GPU group name
host_id
bigint(20) unsigned
NO
NULL
vgpu_types (id, vgpu_type, gpu_group_id, remaining_vm_capacity) : This table contains the record of available vgpu profiles.
Field
Type
NULL
Key
Default
Comments
id
bigint(20) unsigned
NO
PRI
NULL
auto_increment
gpu_group_id
bigint(20) unsigned
NO
NULL
"id" in the op_host_gpu_groups table
vgpu_type
varchar(40)
NO
NULL
Name label of the vgpu type.
remaining_vm_capacity
bigint(20) unsigned
NULL
remaining no. of vgpu the given gpu group with given vgpuType can create.
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e.g.: To create a service offering with GPU Passthrough support:
http://localhost:8080/client/api?command=createServiceOffering&serviceofferingdetails\[0\].key=pciDevice&serviceofferingdetails\[0\].value=gpuPassthrough&response=json&.........
To create a service offering with vGPU support:
http://localhost:8080/client/api?command=createServiceOffering&serviceofferingdetails\[01\].key=pciDevice=vGPU&serviceofferingdetails\[1\].value=VGPU&serviceofferingdetails\[2\].key=vgpuType&serviceofferingdetails\[12\].vGPUTypevalue=GRID_200GRID%20K260Q&response=json........
- listHosts : If the host is GPU enabled, then this API will also list the following GPU related information:
- What are the GPU cards managed by this host.
- Used Capacity
- Available capacity
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- Supports XenServer 6.2 or later with required hotfixes [4].
- HVM template is required to create a VM with GPU/VGPU support.
NVIDIA GRID K1 AND K2 cards supports homogeneous virtual GPUs i.e. at any given time, the vGPUs resident on a single physical GPU must be all of the same type. However, this restriction doesn't extend across physical GPUs on the same card. Each physical GPU on a K1 or K2 may host different types of virtual GPU at the same time. For example, a GRID K2 card has two physical GPUs, and supports three types of virtual GPU; GRID K200, GRID K240Q, AND GRID K260Q [3].
GRID
Profile Name
No. of Physical GPUs
Video Ram per vGPU
Max Resolution
vGPUs per GPU
No. of vGPUs per Card
KI
GRID K100
4
256 MB
1920 x 1200
8
32
K1
GRID K140Q
4
1 GB
2560 x 1600
4
16
K2
GRID K200
2
256 MB
1920 x 1200
8
16
K2
GRID K240Q
2
1 GB
2560 x 1600
4
8
K2
GRID K260Q
2
2 GB
2560 x 1600
2
4
Logging and debugging
- All the VM activities involving GPU would be logged at different log levels (INFO, ERROR, DEBUG) in management server log file.
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