Projekat virtio-nvgpu razvija virtio ure\u0111aj koji omogu\u0107ava pristup NVIDIA GPU iz gostuju\u0107ih sistema pokrenutih pod hipervizorom KVM, uz minimalne gubitke performansi. Uklju\u010duje modul jezgra koji se u\u010ditava u gostuju\u0107em sistemu i virtio ure\u0111aj koji se izvr\u0161ava na strani host okru\u017eenja. Kod modula jezgra je napisan na C jeziku i distribuira se pod GPLv2 licencom, dok je kod virtio ure\u0111aja napisan na Rust jeziku i distribuira se pod Apache 2.0 licencom. <\/p>\n
Prema procenama programera, gubitak performansi pri pristupu GPU ne prelazi 2%. Visoka brzina rada se posti\u017ee preusmeravanjem ioctl poziva ka nativnom NVIDIA drajveru i radom na nivou NVIDIA drajverskog ABI, bez prevo\u0111enja zahteva na API nivou. Na strani gostuju\u0107eg sistema se koriste standardne biblioteke i visoko nivo drajveri NVIDIA koji rade u korisni\u010dkom prostoru. <\/p>\n
V gostejski sistem se nalaga jedro modula, ki nudi naprave \/dev\/nvidiactl, \/dev\/nvidia0\u2026N, \/dev\/nvidia-uvm in preusmerja klice ioctl() in mmap() preko virtqueue do obdelovalnika v okviru gostiteljske okolice, ki jih posreduje gostiteljski gonilnik NVIDIA. Da bi se izognili preklapljanju kontekstov med gostiteljskim sistemom in virtualnim strojem, se ukazni predpomnilniki odra\u017eajo (mmap) v skupni pomnilnik, dostopen gostiteljski okolici in GPU. <\/p>\n
Za razliku od ekskluzivnog prosle\u0111ivanja pristupa GPU-u (VFIO Passthrough), projekat virtio-nvgpu omogu\u0107ava zajedni\u010dki pristup jednom GPU-u iz vi\u0161e sistema. virtualnih naprav<\/a>, a za razliku od virtio-gpu (Venus, VirGL), funkcionira preno\u0161enjem ABI ka NVIDIA drajveru, a ne na nivou prevo\u0111enja grafi\u010dkih API-ja Vulkan i OpenGL. Nedostaci virtio-nvgpu su nedostatak potpune izolacije zasnovane na IOMMU (gostuju\u0107i sistemi rade kroz nativni NVIDIA drajver i ograni\u010deni su samo filtriranjem ioctl poziva) i vezanost za NVIDIA drajverski ABI (ABI se menja u svakoj verziji i zahteva prilago\u0111avanje virtio-nvgpu). <\/p>\n Mogu\u0107nosti virtio-nvgpu su dovoljne za renderovanje, kodiranje videa i izra\u010dunavanja kori\u0161\u0107enjem API-ja Vulkan, OpenGL, NVENC i CUDA. Kao glavna oblast primene navodi se kreiranje obla\u010dnih gejmerskih usluga ili virtuelnih radnih mesta, u kojima se igra ili grafi\u010dka aplikacija pokre\u0107e u virtualni napravi<\/a>, v kateri se izvaja upodabljanje, strojno kodiranje rezultata s pomo\u010djo NVENC in prenos izhoda oddaljenemu uporabniku v obliki stisnjenega video toka. \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 zagotavljanje dostopa do GPU NVIDIA iz virtualnih strojev KVM | ProHoster","description":"Projekt virtio-nvgpu razvija virtio napravo, ki omogo\u010da dostop do GPU NVIDIA iz gostujo\u010dih sistemov, ki te\u010dejo pod nadzorom hipervizorja KVM, z minimalnimi izgubami zmogljivosti.","canonical_url":"https:\/\/prohoster.info\/sl\/blog\/news\/virtio-nvgpu-module-for-accessing-nvidia-gpus-from-kvm-virtual-machines","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sl_SI","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47virtio-nvgpu \u2014 \u043c\u043e\u0434\u0443\u043b\u044c \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a GPU NVIDIA \u0438\u0437 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d KVM | 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Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"