Projekt virtio-nvgpu razvija virtio-ure\u0111aj koji omogu\u0107ava pristup NVIDIA GPU-u iz gostuju\u0107ih sustava koji rade pod hipervizorom KVM, uz minimalni gubitak performansi. Uklju\u010duje modul jezgre koji se u\u010ditava u gostuju\u0107i sustav i virtio-ure\u0111aj koji se izvr\u0161ava na strani host-okolice. Kod modula jezgre napisan je u C jeziku i distribuira se pod GPLv2 licencom, dok je kod virtio-ure\u0111aja napisan na Rustu i distribuira se pod Apache 2.0 licencom. <\/p>\n
Prema procjeni developera, gubitak performansi prilikom pristupa GPU-u ne prelazi 2%. Visoka brzina rada posti\u017ee se preusmjeravanjem ioctl poziva na izvorni NVIDIA upravlja\u010dki program i radom na razini ABI NVIDIA upravlja\u010dkog programa, bez prevo\u0111enja zahtjeva na razini API-ja. Na strani gostuju\u0107eg sustava koriste se standardne biblioteke i visokorazinski NVIDIA upravlja\u010dki programi koji rade u korisni\u010dkom prostoru. <\/p>\n
U gostovskoj sistemu u\u010ditava se modul jezgre koji pru\u017ea datoteke ure\u0111aja \/dev\/nvidiactl, \/dev\/nvidia0\u2026N, \/dev\/nvidia-uvm i proslje\u0111uje pozive ioctl() i mmap() kroz virtqueue prema upravlja\u010du na strani host okru\u017eenja, koji ih predaje host voza\u010du NVIDIA. Kako bi se izbjeglo prebacivanje konteksta izme\u0111u host sistema i virtuelne ma\u0161ine, buffere komandi odra\u017eavaju (mmap) u zajedni\u010dku memoriju \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0443 host okru\u017eenju i GPU. <\/p>\n
Za razliku od ekskluzivnog proslje\u0111ivanja pristupa GPU-u (VFIO Passthrough), projekt virtio-nvgpu omogu\u0107uje dijeljeni pristup jednom GPU-u iz vi\u0161e virtualnih ma\u0161ina<\/a>, a za razliku od virtio-gpu (Venus, VirGL) radi preko proslje\u0111ivanja ABI do NVIDIA upravlja\u010dkog programa, a ne na razini prevo\u0111enja grafi\u010dkih API-ja Vulkan i OpenGL. Nedostaci virtio-nvgpu uklju\u010duju nedostatak potpune izolacije na bazi IOMMU (gostuju\u0107i sustavi rade preko host NVIDIA upravlja\u010dkog programa i ograni\u010deni su samo na filtriranje ioctl poziva) i vezanost uz ABI NVIDIA upravlja\u010dkih programa (ABI se mijenja u svakoj verziji i zahtijeva prilagodbu virtio-nvgpu). <\/p>\n Mogu\u0107nosti virtio-nvgpu su dovoljno kvalitetne za renderiranje, kodiranje videa i izra\u010dune pomo\u0107u API-ja Vulkan, OpenGL, NVENC i CUDA. Kao glavno podru\u010dje primjene spominje se stvaranje oblaka gaming usluga ili virtualnih radnih mjesta, u kojima se igra ili grafi\u010dka aplikacija pokre\u0107e u virtualnoj ma\u0161ini<\/a>, u kojem se obavlja renderiranje, hardversko kodiranje rezultata uz pomo\u0107 NVENC i prijenos izlaza udaljenom korisniku u obliku komprimiranog video streama. \u041f\u0440\u043e\u0435\u043a\u0442 virtio-nvgpu \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 virtio-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a GPU NVIDIA \u0438\u0437 \u0433\u043e\u0441\u0442\u0435\u0432\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c, \u0437\u0430\u043f\u0443\u0449\u0435\u043d\u043d\u044b\u0445 \u043f\u043e\u0434 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 KVM, \u0441 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u043e\u0442\u0435\u0440\u0435\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u0432\u0445\u043e\u0434\u0438\u0442 \u043c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430, \u0437\u0430\u0433\u0440\u0443\u0436\u0430\u0435\u043c\u044b\u0439 \u0432 \u0433\u043e\u0441\u0442\u0435\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0438 virtio-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0435 \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0445\u043e\u0441\u0442-\u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f. \u041a\u043e\u0434 \u043c\u043e\u0434\u0443\u043b\u044f \u044f\u0434\u0440\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2, \u0430 \u043a\u043e\u0434 virtio-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 Rust […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183477","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47virtio-nvgpu \u2014 modul za pru\u017eanje pristupa NVIDIA GPU-u iz KVM virtualnih ma\u0161ina | ProHoster","description":"Projekt virtio-nvgpu razvija virtio ure\u0111aj koji omogu\u0107ava pristup NVIDIA GPU-u iz gostuju\u0107ih sustava koji rade pod hipervizorom KVM, s minimalnim gubitkom 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Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"