HP ProLiant WS460c HP Hardware Accelerated Graphics for Desktop Virtualization - Page 11

Technical white paper | HP Hardware Accelerated Graphics for Desktop Virtualization Hyper-V RemoteFX Considerations • The GPU has a dedicated amount of video RAM. Microsoft RemoteFX vGPU (VM with vGPU connected) virtual machines consume a specific amount of video RAM based on the max number of monitors and resolution set for each virtual machine. This will dictate the maximum number of virtual machine per physical GPU. Tables 5a and 5b give you the memory allocation based on monitor and resolution configuration • RemoteFX uses software virtualized GPU API intercept technology, allowing multiple virtual machines to use the recourse of that GPU. The more virtual machines you configure with RFX per host, the lower the potential performance will be • Multiple physical graphics cards enhances performance and scalability as Hyper-V will load balance between cards as virtual machines start up Table 5a. 2012 Hyper-V vRAM usage/Max monitor support Resolution 1024 x 768 1280 x 1024 1600 x 1200 1920 x 1200 2560 x 1600 1 monitor 48 MB 80 MB 120 MB 142 MB 252 MB 2 monitors 52 MB 85 MB 126 MB 150 MB 268 MB 3 monitors 58 MB 95 MB 142 MB 168 MB Not supported 8 monitors 70 MB 115 MB Not supported Not supported Not supported Table 5b. 2008 Hyper-V vRAM usage/Max monitor support Resolution 1024 x 768 1280 x 1024 1600 x 1200 1920 x 1200 2560 x 1600 1 monitor 75 MB 125 MB 184 MB 220 MB Not supported 2 monitors 105 MB 175 MB 257 MB 308 MB Not supported 4 monitors 135 MB 225 MB 330 MB Not supported Not supported 8 monitors 165 MB 275 MB Not supported Not supported Not supported VMware vDGA density considerations • VMware vDGA pass-through GPU technology allows for maximum graphical performance (Workstation grade) as each VM has a dedicated GPU attached • When creating a VM with workstation class graphics performance, you will also need to give it workstation class resources with at least 2 vCPU and 2-4 Gb Memory • GPU to VM density determined by number of GPUs, this model uses one GPU per VM, no sharing VMware vSGA VM density considerations • Adding multiple physical graphics cards enhances performance and scalability as VMware will load balance between cards as virtual machines start up. • When using a GPU with vSGA, for each VM, 50% of the vRAM allocated comes from Host RAM and 50% comes from GPU. - How many VMs can run on host GPU/s depends on policy set for that pool. • If Hardware - If GPU resources are available it will go to next available GPU resource. - If no GPU resource is available it will fail to power on. • If Software - All Software • If Automatic - If GPU resources are available it will go to next available GPU resource. - If no GPU resource is available it will go to software. 11