{"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\/ro\/blog\/news\/ubuntu-budet-postavlyat-intel-compute-runtime-bez-zashhity-ot-spectre-snizhayushhej-proizvoditelnost-na-20","title":{"rendered":"Ubuntu va livra intel-compute-runtime f\u0103r\u0103 protec\u021bie \u00eempotriva Spectre, ceea ce reduce performan\u021ba cu 20%.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen Ubuntu s-a decis s\u0103 se treac\u0103 implicit la livrarea pachetului intel-compute-runtime, compilat cu op\u021biunea NEO_DISABLE_MITIGATIONS, care dezactiveaz\u0103 protec\u021bia \u00eempotriva atacurilor de tip Spectre. Conform estim\u0103rilor dezvoltatorilor Ubuntu, prezen\u021ba unei asemenea protec\u021bii duce la o sc\u0103dere a performan\u021bei pachetului de aproximativ 20%. <\/p>\n

Pachetul intel-compute-runtime include componentele necesare pentru utilizarea OpenCL \u0219i OneAPI Level Zero pe sistemele cu GPU Intel. Atunci c\u00e2nd se compileaz\u0103 bibliotecile incluse \u00een pachet, prezen\u021ba flag-ului de compilare NEO_DISABLE_MITIGATIONS duce la dezactivarea \u00een compilator a op\u021biunilor «-mretpoline -mindirect-branch=thunk -mfunction-return=thunk -mindirect-branch-register», care ofer\u0103 o protec\u021bie suplimentar\u0103 \u00eempotriva Spectre. Aceste op\u021biuni nu afecteaz\u0103 performan\u021ba OpenCL \u0219i a opera\u021biunilor pe GPU, dar reduc suprasarcina \u00een execu\u021bia codului responsabil pentru func\u021bionarea API-ului. <\/p>\n

Inginerii responsabili de securitate de la Intel \u0219i Canonical, \u00een urma discu\u021biilor, au ajuns la concluzia c\u0103 protec\u021bia \u00eempotriva Spectre implementat\u0103 la nivelul Compute Runtime nu mai este necesar\u0103, deoarece protec\u021bia necesar\u0103 este deja prezent\u0103 la nivel de kernel. Protec\u021bia existent\u0103 \u00een Compute Runtime \u00eempotriva Spectre este de interes \u00een principal pentru cei care utilizeaz\u0103 kerneluri f\u0103r\u0103 o protec\u021bie adecvat\u0103, iar beneficiile acesteia nu compenseaz\u0103 sc\u0103derea observat\u0103 a performan\u021bei. \u00cen plus, versiunile Intel Graphics Compute Runtime oferite de Intel sunt compilate cu op\u021biunea NEO_DISABLE_MITIGATIONS activat\u0103 implicit, dezactiv\u00e2nd protec\u021bia.
\n
Sursa: opennet.ro<\/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\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 va livra intel-compute-runtime f\u0103r\u0103 protec\u021bie \u00eempotriva Spectre, ceea ce duce la o sc\u0103dere a performan\u021bei de 20% | ProHoster","description":"\u00cen Ubuntu s-a decis s\u0103 se treac\u0103 implicit la livrarea pachetului intel-compute-runtime, compilat cu op\u021biunea NEO_DISABLE_MITIGATIONS, care dezactiveaz\u0103 protec\u021bia \u00eempotriva atacurilor de tip 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