{"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\/sk\/blog\/news\/ubuntu-budet-postavlyat-intel-compute-runtime-bez-zashhity-ot-spectre-snizhayushhej-proizvoditelnost-na-20","title":{"rendered":"Ubuntu bude dod\u00e1va\u0165 intel-compute-runtime bez ochrany pred Spectre, \u010do zni\u017euje v\u00fdkon o 20%.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V Ubuntu sa rozhodlo prejs\u0165 na dod\u00e1vanie bal\u00edka intel-compute-runtime, ktor\u00fd je zostaven\u00fd s praporcom NEO_DISABLE_MITIGATIONS, vyp\u00ednaj\u00facim ochranu pred \u00fatokmi typu Spectre. Pod\u013ea odhadov v\u00fdvoj\u00e1rov Ubuntu pr\u00edtomnos\u0165 takejto ochrany vedie k poklesu v\u00fdkonu bal\u00edka pribli\u017ene o 20%. <\/p>\n

Bal\u00edk intel-compute-runtime obsahuje komponenty potrebn\u00e9 na pou\u017e\u00edvanie OpenCL a OneAPI Level Zero na syst\u00e9moch s GPU Intel. Pri zostavovan\u00ed kni\u017en\u00edc dod\u00e1van\u00fdch v bal\u00edku pr\u00edtomnos\u0165 prep\u00edna\u010da NEO_DISABLE_MITIGATIONS sp\u00f4sob\u00ed deaktiv\u00e1ciu mo\u017enost\u00ed v kompil\u00e1tore «-mretpoline -mindirect-branch=thunk -mfunction-return=thunk -mindirect-branch-register», ktor\u00e9 poskytuj\u00fa dodato\u010dn\u00fa ochranu proti Spectre. Tieto mo\u017enosti nemaj\u00fa vplyv na v\u00fdkon OpenCL a oper\u00e1ci\u00ed na strane GPU, ale zni\u017euj\u00fa re\u017eijn\u00e9 n\u00e1klady pri vykon\u00e1van\u00ed k\u00f3du zodpovedn\u00e9ho za pr\u00e1cu API. <\/p>\n

In\u017einieri zodpovedn\u00ed za bezpe\u010dnos\u0165 v Intel a Canonical po\u010das diskusie dospeli k z\u00e1veru, \u017ee ochrana pred \u00fatokom Spectre, implementovan\u00e1 na \u00farovni Compute Runtime, u\u017e nie je potrebn\u00e1, preto\u017ee po\u017eadovan\u00e1 ochrana u\u017e existuje na \u00farovni jadra. Existuj\u00faca ochrana v Compute Runtime proti \u00fatoku Spectre je zauj\u00edmav\u00e1 predov\u0161etk\u00fdm pre t\u00fdch, ktor\u00ed pou\u017e\u00edvaj\u00fa jadr\u00e1 bez adekv\u00e1tnej ochrany, a pr\u00ednos z nej neprekon\u00e1va pozorovan\u00fd pokles v\u00fdkonu. Okrem toho sa poskytnut\u00e9 vydania Intel Graphics Compute Runtime zostavuj\u00fa s predvolen\u00fdm nastaven\u00edm praporca NEO_DISABLE_MITIGATIONS, ktor\u00fd vyp\u00edna 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\u00e1va\u0165 intel-compute-runtime bez ochrany pred \u00fatokom Spectre, ktor\u00e1 zni\u017euje v\u00fdkon o 20% | ProHoster","description":"V Ubuntu sa rozhodlo prejs\u0165 na dod\u00e1vanie bal\u00edka intel-compute-runtime, ktor\u00fd je zostaven\u00fd s praporcom NEO_DISABLE_MITIGATIONS, vyp\u00ednaj\u00facim ochranu pred \u00fatokmi typu 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