{"id":42117,"date":"2019-03-18T00:00:00","date_gmt":"2019-03-17T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/situatsiya-virtualnye-gpu-ne-ustupayut-po-proizvoditelnosti-zheleznym-resheniyam"},"modified":"2020-02-18T13:44:55","modified_gmt":"2020-02-18T10:44:55","slug":"situatsiya-virtualnye-gpu-ne-ustupayut-po-proizvoditelnosti-zheleznym-resheniyam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/administrirovanie\/situatsiya-virtualnye-gpu-ne-ustupayut-po-proizvoditelnosti-zheleznym-resheniyam","title":{"rendered":"Situa\u00e7\u00e3o: GPUs virtuais n\u00e3o ficam atr\u00e1s das solu\u00e7\u00f5es f\u00edsicas em desempenho","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Em fevereiro, ocorreu uma confer\u00eancia em Stanford dedicada a computa\u00e7\u00e3o de alto desempenho (HPC). Representantes da VMware informaram que, ao trabalhar com GPU, o sistema baseado em um hipervisor ESXi modificado n\u00e3o fica atr\u00e1s das solu\u00e7\u00f5es bare metal em termos de velocidade.<\/p>\n<p>Abordamos as tecnologias que possibilitaram isso.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/443946\/\"><img decoding=\"async\" alt=\"Situa\u00e7\u00e3o: GPUs virtuais n\u00e3o ficam atr\u00e1s das solu\u00e7\u00f5es f\u00edsicas em desempenho\" src=\"\/wp-content\/uploads\/2019\/03\/5618dc11e259e374b3fcf9210bb12b59.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>\/ \u0444\u043e\u0442\u043e <noindex><a rel=\"nofollow\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Wikimedia_Foundation_Servers-8055_10.jpg\">Victorgrigas<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/deed.en\">CC BY-SA<\/a><\/noindex><\/i><\/p>\n<h2>Problema de desempenho<\/h2>\n<p>\nDe acordo com analistas, cerca de 70% das cargas de trabalho em data centers <noindex><a rel=\"nofollow\" href=\"https:\/\/www.nextplatform.com\/2019\/02\/27\/making-performance-a-priority-with-virtualized-gpus\/\">s\u00e3o virtualizadas<\/a><\/noindex>. No entanto, os 30% restantes ainda operam em bare metal sem hipervisores. Esses 30% consistem, em grande parte, em aplica\u00e7\u00f5es de alto desempenho, como o treinamento de redes neurais, que utilizam processadores gr\u00e1ficos.<\/p>\n<p>Esse tend\u00eancia \u00e9 explicada por especialistas pelo fato de que o hipervisor, como uma camada intermedi\u00e1ria de abstra\u00e7\u00e3o, pode afetar o desempenho de todo o sistema. Estudos de cinco anos atr\u00e1s <noindex><a rel=\"nofollow\" href=\"https:\/\/isi.edu\/~mkkang\/papers\/Cloud_2014.pdf\">revelam dados<\/a><\/noindex> sobre uma redu\u00e7\u00e3o de velocidade de 10%. Por isso, empresas e operadores de data centers n\u00e3o est\u00e3o com pressa em migrar cargas de HPC para ambientes virtuais.<\/p>\n<p>Entretanto, as tecnologias de virtualiza\u00e7\u00e3o est\u00e3o evoluindo e se aperfei\u00e7oando. Na confer\u00eancia do m\u00eas passado, a VMware informou que o hipervisor ESXi n\u00e3o tem impacto negativo no desempenho da GPU. A velocidade de computa\u00e7\u00e3o pode diminuir em tr\u00eas por cento, o que \u00e9 compar\u00e1vel \u00e0s m\u00e9tricas de bare metal.<\/p>\n<h2>Como funciona<\/h2>\n<p>\nPara melhorar o desempenho de sistemas HPC com processadores gr\u00e1ficos, a VMware implementou v\u00e1rias mudan\u00e7as no hipervisor. Em particular, ele foi desligado da fun\u00e7\u00e3o vMotion. Essa fun\u00e7\u00e3o \u00e9 necess\u00e1ria para equilibrar a carga e geralmente transfere m\u00e1quinas virtuais (VMs) entre servidores ou GPUs. Desativar o vMotion fez com que cada VM agora fosse vinculada a um processador gr\u00e1fico espec\u00edfico. Isso ajudou a reduzir os custos de troca de dados.<\/p>\n<p>Outro componente chave do sistema <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.vmware.com\/en\/VMware-vSphere\/6.7\/com.vmware.vsphere.networking.doc\/GUID-BF2770C3-39ED-4BC5-A8EF-77D55EFE924C.html\">\u00e9 a tecnologia<\/a><\/noindex> DirectPath I\/O. Ela permite que o driver CUDA para computa\u00e7\u00e3o paralela interaja diretamente com as m\u00e1quinas virtuais, contornando o hipervisor. Quando v\u00e1rias VMs precisam ser executadas em uma \u00fanica GPU, a solu\u00e7\u00e3o GRID vGPU \u00e9 utilizada. Ela divide a mem\u00f3ria da placa em v\u00e1rios segmentos (mas os ciclos de computa\u00e7\u00e3o n\u00e3o s\u00e3o divididos).<\/p>\n<p>O funcionamento de duas m\u00e1quinas virtuais neste caso ser\u00e1 o seguinte:<\/p>\n<p><img decoding=\"async\" alt=\"Situa\u00e7\u00e3o: GPUs virtuais n\u00e3o ficam atr\u00e1s das solu\u00e7\u00f5es f\u00edsicas em desempenho\" src=\"\/wp-content\/uploads\/2019\/03\/5e1edef302889fc18b14fe097c6d560b.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Resultados e previs\u00f5es<\/h2>\n<p>\nEmpresa <noindex><a rel=\"nofollow\" href=\"http:\/\/on-demand.gputechconf.com\/gtc\/2018\/presentation\/s8249-machine-learning-on-vmware-vsphere-using-nvidias-virtualized-gpus.pdf\">realizou testes<\/a><\/noindex> hipervisor, treinando um modelo de linguagem com base <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/TensorFlow\">TensorFlow<\/a><\/noindex>. O \"dano\" ao desempenho foi de apenas 3\u20134%, em compara\u00e7\u00e3o ao bare metal. Em contrapartida, o sistema ganhou a capacidade de alocar recursos sob demanda, dependendo das cargas atuais.<\/p>\n<p>O gigante da TI tamb\u00e9m <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.vmware.com\/apps\/2018\/08\/sharing-nvidia-gpus-in-singularity-hpc-containers-leveraging-vsphere.html\">realizou testes<\/a><\/noindex> com cont\u00eaineres. Os engenheiros da empresa treinaram redes neurais para reconhecer imagens. Nesse processo, os recursos de uma \u00fanica GPU foram alocados entre quatro VMs cont\u00eainerizadas. Como resultado, o desempenho de m\u00e1quinas individuais caiu em 17% (em compara\u00e7\u00e3o a uma VM com acesso total aos recursos da GPU). No entanto, o n\u00famero de imagens processadas por segundo <noindex><a rel=\"nofollow\" href=\"http:\/\/3s81si1s5ygj3mzby34dq6qf-wpengine.netdna-ssl.com\/wp-content\/uploads\/2019\/02\/VMware-ML-throughput-results.png\">aumentou<\/a><\/noindex> tr\u00eas vezes. Espera-se que sistemas desse tipo <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.vmware.com\/vsphere\/2018\/10\/machine-learning-with-gpus-on-vsphere.html\">encontrem<\/a><\/noindex> aplica\u00e7\u00e3o na \u00e1rea de an\u00e1lise de dados e modelagem computacional.<\/p>\n<p>Entre os problemas potenciais que a VMware pode enfrentar, especialistas <noindex><a rel=\"nofollow\" href=\"https:\/\/www.nextplatform.com\/2019\/02\/27\/making-performance-a-priority-with-virtualized-gpus\/\">destacam<\/a><\/noindex> um p\u00fablico alvo bastante restrito. At\u00e9 o momento, um n\u00famero reduzido de empresas utiliza sistemas de alto desempenho. Embora no Statista <noindex><a rel=\"nofollow\" href=\"https:\/\/www.statista.com\/statistics\/227284\/share-of-global-cloud-data-center-workloads-development\/\">observam<\/a><\/noindex>, que at\u00e9 2021, 94% das cargas de trabalho globais j\u00e1 estariam virtualizadas. Segundo <noindex><a rel=\"nofollow\" href=\"https:\/\/www.marketsandmarkets.com\/PressReleases\/Quantum-High-Performance-Computing.asp\">previs\u00f5es<\/a><\/noindex> de analistas, o valor do mercado de HPC dever\u00e1 crescer de 32 para 45 bilh\u00f5es de d\u00f3lares entre 2017 e 2022.<\/p>\n<p><img decoding=\"async\" alt=\"Situa\u00e7\u00e3o: GPUs virtuais n\u00e3o ficam atr\u00e1s das solu\u00e7\u00f5es f\u00edsicas em desempenho\" src=\"\/wp-content\/uploads\/2019\/03\/d74d9df5b6e7957aa7b4990408d0eb7f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\/ \u0444\u043e\u0442\u043e <noindex><a rel=\"nofollow\" href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Inside_Suite.jpg\">Ponto de Acesso Global<\/a><\/noindex> PD<\/i><\/p>\n<h2>Solu\u00e7\u00f5es semelhantes<\/h2>\n<p>\nNo mercado, existem v\u00e1rias alternativas, desenvolvidas por grandes empresas de TI: AMD e Intel.<\/p>\n<p>A primeira empresa para virtualiza\u00e7\u00e3o de GPUs <noindex>oferece<\/noindex> adota uma abordagem baseada em SR-IOV (virtualiza\u00e7\u00e3o de entrada\/sa\u00edda de raiz \u00fanica). Essa tecnologia oferece \u00e0s VMs acesso a parte das capacidades de hardware do sistema. A solu\u00e7\u00e3o permite dividir a GPU entre 16 usu\u00e1rios com desempenho igual das VMs virtualizadas.<\/p>\n<p>Quanto ao segundo gigante da TI, sua <noindex><a rel=\"nofollow\" href=\"https:\/\/www.intel.com\/content\/www\/us\/en\/solution-providers\/documents\/intel-citrix-xendesktop-virtualized-graphics-brief.html\">tecnologia \u00e9 baseada<\/a><\/noindex> no hipervisor Citrix XenServer 7. Ela combina a opera\u00e7\u00e3o do driver padr\u00e3o da GPU com a m\u00e1quina virtual, permitindo que esta exiba aplicativos 3D e desktops em dispositivos de centenas de usu\u00e1rios.<\/p>\n<h2>O futuro da tecnologia<\/h2>\n<p>\nDesenvolvedores de GPUs virtuais <noindex><a rel=\"nofollow\" href=\"https:\/\/www.networkworld.com\/article\/3197846\/nvidia-gives-glimpse-of-the-future-at-its-gpu-technology-conference.html\">apostam<\/a><\/noindex> na implementa\u00e7\u00e3o de sistemas de IA e no crescimento da popularidade de solu\u00e7\u00f5es de alto desempenho no mercado de tecnologia empresarial. Eles esperam que a necessidade de processar grandes volumes de dados aumente a demanda por vGPUs.<\/p>\n<p>Atualmente, os fabricantes <noindex><a rel=\"nofollow\" href=\"https:\/\/searchservervirtualization.techtarget.com\/tip\/GPU-virtualization-evolves-with-new-chip-types-on-the-horizon\">procuram uma maneira<\/a><\/noindex> unir a funcionalidade de CPU e GPU em um \u00fanico n\u00facleo para acelerar a solu\u00e7\u00e3o de tarefas relacionadas a gr\u00e1ficos, realizar c\u00e1lculos matem\u00e1ticos, opera\u00e7\u00f5es l\u00f3gicas e processamento de dados. A chegada desses n\u00facleos no mercado no futuro mudar\u00e1 a abordagem em rela\u00e7\u00e3o \u00e0 virtualiza\u00e7\u00e3o de recursos e sua distribui\u00e7\u00e3o entre cargas de trabalho em ambientes virtuais e em nuvem.<\/p>\n<p>\nO que ler sobre o assunto em nosso blog corporativo:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/tendencii\/pochemu-korporativnye-zakazchiki-ispolzuyut-virtualnye-mashiny-a-ne-kontejnery\/\">Por que as empresas usam m\u00e1quinas virtuais em vez de cont\u00eaineres<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/novosti\/kak-dela-u-vmware-obzor-novyx-reshenij\/\">\"Como est\u00e1 a VMware\": vis\u00e3o geral das novas solu\u00e7\u00f5es<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/funkcionalnost\/novaya-funkcionalnost-v-vmware-vsphere-6-7\/\">VMware vSphere 6.7: quais s\u00e3o os benef\u00edcios das novas funcionalidades do hypervisor<\/a><\/noindex><\/li>\n<\/ul>\n<p>\nAlguns posts de nosso canal no Telegram:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/187\">A arquitetura de TI do futuro \u2014 quem e como se prepara para ela<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/195\">5 ferramentas para gerenciar a nuvem<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/194\">Como um provedor de IaaS protege os dados dos clientes<\/a><\/noindex><\/li>\n<\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/443946\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0444\u0435\u0432\u0440\u0430\u043b\u0435 \u0432 \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0435 \u043f\u0440\u043e\u0448\u043b\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u044f, \u043f\u043e\u0441\u0432\u044f\u0449\u0451\u043d\u043d\u0430\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f\u043c (HPC). \u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u0442\u0435\u043b\u0438 VMware \u0440\u0430\u0441\u0441\u043a\u0430\u0437\u0430\u043b\u0438, \u0447\u0442\u043e \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 GPU \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 ESXi \u043f\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u0438 \u043d\u0435 \u0443\u0441\u0442\u0443\u043f\u0430\u0435\u0442 bare metal \u0440\u0435\u0448\u0435\u043d\u0438\u044f\u043c. \u0420\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u043e \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f\u0445, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u043b\u0438 \u044d\u0442\u043e\u0433\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f. \/ \u0444\u043e\u0442\u043e Victorgrigas CC BY-SA \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u041f\u043e \u043e\u0446\u0435\u043d\u043a\u0430\u043c \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u043a\u043e\u0432, \u043f\u043e\u0440\u044f\u0434\u043a\u0430 70% \u0440\u0430\u0431\u043e\u0447\u0438\u0445 \u043d\u0430\u0433\u0440\u0443\u0437\u043e\u043a \u0432 \u0434\u0430\u0442\u0430-\u0446\u0435\u043d\u0442\u0440\u0430\u0445 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u044b. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-42117","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u0444\u0435\u0432\u0440\u0430\u043b\u0435 \u0432 \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0435 \u043f\u0440\u043e\u0448\u043b\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u044f, \u043f\u043e\u0441\u0432\u044f\u0449\u0451\u043d\u043d\u0430\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f\u043c 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