Sorry Fredigano... I have read again your detailed response... and I cannot see the option where the client GPU is used... Is it expected the client GPU used with "option 2"
Can you tell us when client GPU is used? Thanks a lot. 2017-05-09 13:31 GMT+02:00 Oscar Segarra <oscar.sega...@gmail.com>: > Ok, thanks for the detailed explanation... I'd suggest to publish it in > your webpage in order to help other users. > > Óscar. > > 2017-05-09 13:24 GMT+02:00 Frediano Ziglio <fzig...@redhat.com>: > >> There's a bit of confusion. >> >> The VM sees which cards the hypervisor (Qemu in this case) is configured >> to provide. As >> any card GPUs can be >> 1) physical, fully virtual >> 2) paravirtual >> 3) pass-through, specifically: >> 3.1) full pass-through >> 3.2) function pass-through >> >> 1) like VGA, a physical card is fully emulated, quite slow, there are >> some cards which are better than others as requires less guest <-> >> hypervisor >> switches; >> 2) there are no physical card, the card is created just for virtual >> environment. >> This reduce the switches guest <-> hypervisor and optimized a lot of >> functions. >> Virgl cards, like QXL or VirtIO cards are like that. Are much more >> efficient >> and allows lot of features provided by virtual environment (like suspend >> or migration). The "best" for Qemu and 3d is surely Virgl but as said >> there's >> no Windows drivers at the moment; >> 3) you pass a full physical card or part of it. This CAN'T be used by the >> host >> and reduce control not allowing (usually) suspend and migration; >> 3.1) basically an entire physical card is passed to the guest. If you >> have an additional >> GPU (graphical card) you can do it; >> 3.2) some cards allow to provide part of its functions to be assigned like >> if were a physical card. For GPU currently Qemu/KVM does not provide >> much. Work is going to support Intel solutions and Nvidia ones. >> Nvidia ones are usually quite expensive (cards do not fit in either >> laptops >> or even desktops) while Intel offers some really cheap solutions using a >> mix of hardware/software solution. >> >> Frediano >> >> >> Hi Christophe, >> >> Thanks a lot for your clarifications... can you help me with the other >> questions? >> >> *Is there any way to check if is it using client GPU or host CPU?* >> >> *Is there any Grpahics card to be plugged in the host in order to use >> host GPU?* >> >> thanks a lot. >> >> >> 2017-05-09 12:03 GMT+02:00 Christophe Fergeau <cferg...@redhat.com>: >> >>> Hey, >>> >>> On Tue, May 09, 2017 at 10:42:31AM +0200, Oscar Segarra wrote: >>> > Hi, >>> > >>> > What kind of drivers are required in windows? (I supose you mean >>> Windows >>> > guest). >>> >>> A video driver able to use virtio-gpu + virgl would be needed, but does >>> not exist at the moment. This is one of the Google Summer of Code >>> projects for this year though. >>> >>> Christophe >>> >> >> >> >
_______________________________________________ Spice-devel mailing list Spice-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/spice-devel
