{"id":138553,"date":"2025-06-30T11:11:59","date_gmt":"2025-06-30T09:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ubuntu-budet-postavlyat-intel-compute-runtime-bez-zashhity-ot-spectre-snizhayushhej-proizvoditelnost-na-20"},"modified":"2025-06-30T11:11:59","modified_gmt":"2025-06-30T09:11:59","slug":"ubuntu-budet-postavlyat-intel-compute-runtime-bez-zashhity-ot-spectre-snizhayushhej-proizvoditelnost-na-20","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/ubuntu-budet-postavlyat-intel-compute-runtime-bez-zashhity-ot-spectre-snizhayushhej-proizvoditelnost-na-20","title":{"rendered":"Ubuntu bude dod\u00e1vat intel-compute-runtime bez ochrany proti Spectre, co\u017e sni\u017euje v\u00fdkon o 20%","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V Ubuntu bylo rozhodnuto jako default pou\u017e\u00edt bal\u00ed\u010dek intel-compute-runtime, sestaven\u00fd s p\u0159\u00edznakem NEO_DISABLE_MITIGATIONS, kter\u00fd vyp\u00edn\u00e1 ochranu proti \u00fatok\u016fm t\u0159\u00eddy Spectre. Podle odhadu v\u00fdvoj\u00e1\u0159\u016f Ubuntu m\u00e1 tato ochrana za n\u00e1sledek sn\u00ed\u017een\u00ed v\u00fdkonu bal\u00ed\u010dku o p\u0159ibli\u017en\u011b 20%. <\/p>\n

Bal\u00ed\u010dek intel-compute-runtime zahrnuje komponenty pot\u0159ebn\u00e9 pro pou\u017e\u00edv\u00e1n\u00ed OpenCL a OneAPI Level Zero na syst\u00e9mech s GPU Intel. P\u0159i sestavov\u00e1n\u00ed dod\u00e1van\u00fdch knihoven m\u00e1 p\u0159\u00edtomnost p\u0159ep\u00edna\u010de NEO_DISABLE_MITIGATIONS za n\u00e1sledek vypnut\u00ed v kompil\u00e1toru mo\u017enosti «-mretpoline -mindirect-branch=thunk -mfunction-return=thunk -mindirect-branch-register», kter\u00e9 poskytuj\u00ed dal\u0161\u00ed ochranu proti Spectre. Tyto mo\u017enosti nemaj\u00ed vliv na v\u00fdkon OpenCL a operac\u00ed na stran\u011b GPU, ale sni\u017euj\u00ed re\u017eijn\u00ed n\u00e1klady p\u0159i prov\u00e1d\u011bn\u00ed k\u00f3du, kter\u00fd zaji\u0161\u0165uje pr\u00e1ci API. <\/p>\n

In\u017een\u00fd\u0159i odpov\u011bdn\u00ed za bezpe\u010dnost v Intel a Canonical b\u011bhem diskuse dosp\u011bli k z\u00e1v\u011bru, \u017ee ochrana proti Spectre implementovan\u00e1 na \u00farovni Compute Runtime ji\u017e nen\u00ed pot\u0159eba, proto\u017ee pot\u0159ebn\u00e1 ochrana ji\u017e existuje na \u00farovni j\u00e1dra. Ochrana proti Spectre, kter\u00e1 je v Compute Runtime, je p\u0159edev\u0161\u00edm zaj\u00edmav\u00e1 pro ty, kte\u0159\u00ed pou\u017e\u00edvaj\u00ed j\u00e1dra bez \u0159\u00e1dn\u00e9 ochrany, a jej\u00ed p\u0159\u00ednos nep\u0159evy\u0161uje pozorovan\u00e9 sn\u00ed\u017een\u00ed v\u00fdkonu. Krom\u011b toho poskytovan\u00e9 vyd\u00e1n\u00ed Intel Graphics Compute Runtime jsou sestavov\u00e1na s v\u00fdchoz\u00edm p\u0159\u00edznakem NEO_DISABLE_MITIGATIONS, kter\u00fd vyp\u00edn\u00e1 ochranu.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 Ubuntu \u0440\u0435\u0448\u0435\u043d\u043e \u043f\u0435\u0440\u0435\u0439\u0442\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043d\u0430 \u043f\u043e\u0441\u0442\u0430\u0432\u043a\u0443 \u043f\u0430\u043a\u0435\u0442\u0430 intel-compute-runtime, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u043e\u0433\u043e \u0441 \u0444\u043b\u0430\u0433\u043e\u043c NEO_DISABLE_MITIGATIONS, \u043e\u0442\u043a\u043b\u044e\u0447\u0430\u044e\u0449\u0438\u043c \u0437\u0430\u0449\u0438\u0442\u0443 \u043e\u0442 \u0430\u0442\u0430\u043a \u043a\u043b\u0430\u0441\u0441\u0430 Spectre. \u041f\u043e \u043e\u0446\u0435\u043d\u043a\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 Ubuntu \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u043f\u043e\u0434\u043e\u0431\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u043d\u0430 20%. \u041f\u0430\u043a\u0435\u0442 intel-compute-runtime \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f OpenCL \u0438 OneAPI Level Zero \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 GPU Intel. \u041f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0445 […]<\/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":[702],"tags":[],"class_list":["post-138553","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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Ubuntu bude dod\u00e1vat intel-compute-runtime bez ochrany proti Spectre, kter\u00e1 sni\u017euje v\u00fdkon o 20% | ProHoster","description":"V Ubuntu bylo rozhodnuto jako default pou\u017e\u00edt bal\u00ed\u010dek intel-compute-runtime, sestaven\u00fd s p\u0159\u00edznakem NEO_DISABLE_MITIGATIONS, kter\u00fd vyp\u00edn\u00e1 ochranu proti \u00fatok\u016fm t\u0159\u00eddy 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