{"id":141779,"date":"2025-08-28T11:11:54","date_gmt":"2025-08-28T09:11:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vozmozhnoe-povrezhdenie-cpu-amd-zen-5-pri-ispolzovanii-biblioteki-gnu-mp"},"modified":"2025-08-28T11:11:54","modified_gmt":"2025-08-28T09:11:55","slug":"vozmozhnoe-povrezhdenie-cpu-amd-zen-5-pri-ispolzovanii-biblioteki-gnu-mp","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vozmozhnoe-povrezhdenie-cpu-amd-zen-5-pri-ispolzovanii-biblioteki-gnu-mp","title":{"rendered":"Mo\u017en\u00e9 po\u0161kozen\u00ed CPU AMD Zen 5 p\u0159i pou\u017eit\u00ed knihovny GNU MP","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V\u00fdvoj\u00e1\u0159i knihovny GNU MP (GMP), kter\u00e1 poskytuje funkce pro prov\u00e1d\u011bn\u00ed aritmetick\u00fdch operac\u00ed s libovolnou p\u0159esnost\u00ed, upozornili u\u017eivatele na incident s opakovan\u00fdm selh\u00e1n\u00edm procesor\u016f s\u00e9rie AMD Ryzen 9000 na b\u00e1zi mikroarchitektury Zen 5 b\u011bhem testov\u00e1n\u00ed pr\u00e1ce knihovny. P\u0159edpokl\u00e1d\u00e1 se, \u017ee po\u0161kozen\u00ed procesor\u016f zp\u016fsobilo p\u0159eh\u0159\u00e1t\u00ed vznikaj\u00edc\u00ed p\u0159i intenzivn\u00edm vykon\u00e1v\u00e1n\u00ed funkc\u00ed GMP. P\u0159ed dokon\u010den\u00edm \u00fapln\u00e9 anal\u00fdzy probl\u00e9mu se u\u017eivatel\u016fm nedoporu\u010duje aktivn\u011b pou\u017e\u00edvat GMP na syst\u00e9mech s CPU AMD Zen 5. <\/p>\n

Obavy byly vyvol\u00e1ny opakovan\u00fdm selh\u00e1n\u00edm CPU AMD Ryzen 9950X (AMD Zen5 X16 4300MHz) na serveru<\/a> testovac\u00ed infrastruktu\u0159e projektu. Prvn\u00ed selh\u00e1n\u00ed nastalo v \u00fanoru 2025, po kter\u00e9m byl procesor vym\u011bn\u011bn v r\u00e1mci z\u00e1ruky. Na konci srpna se situace opakovala a z\u00e1rukou vym\u011bn\u011bn\u00fd CPU, nainstalovan\u00fd v syst\u00e9mu s jin\u00fdm zdrojem nap\u00e1jen\u00ed a jinou z\u00e1kladn\u00ed deskou, rovn\u011b\u017e p\u0159estal fungovat se stejn\u00fdmi p\u0159\u00edznaky, kter\u00e9 nazna\u010duj\u00ed p\u0159eh\u0159\u00e1t\u00ed (na \u010dipu se vytvo\u0159ila vybledl\u00e1 oblast o pr\u016fm\u011bru p\u0159ibli\u017en\u011b 1 centimetr).

\"Mo\u017en\u00e9<\/center> <\/p>\n

Podle p\u0159edb\u011b\u017en\u00fdch informac\u00ed knihovna GMP p\u0159\u00edli\u0161 intenzivn\u011b vyu\u017e\u00edv\u00e1 cykly s instrukc\u00ed MULX, co\u017e na syst\u00e9mech s AMD Zen 5 vede ke spot\u0159eb\u011b v\u00fdrazn\u011b v\u011bt\u0161\u00ed energie, ne\u017e je uvedeno, a k nemo\u017enosti kompenzovat teplo syst\u00e9mem chlazen\u00ed, p\u0159izp\u016fsoben\u00fdm podle specifikace. B\u011bhem obou po\u0161kozen\u00ed byl prov\u00e1d\u011bn test s ru\u010dn\u011b psan\u00fdmi assemblerov\u00fdmi cykly s jednou instrukc\u00ed MULX, vytv\u00e1\u0159ej\u00edc\u00ed maxim\u00e1ln\u00ed z\u00e1t\u011b\u017e. <\/p>\n

Na syst\u00e9mech byly pou\u017eity z\u00e1kladn\u00ed desky Asus Prime B650M-K a Asus Prime B650M-A WIFI II, stejn\u011b jako zdroje Corsair SF450 a Corsair RM650. V obou konfigurac\u00edch byl pou\u017eit syst\u00e9m chlazen\u00ed Noctua NH-U9S, ale v prvn\u00edm p\u0159\u00edpad\u011b byl radiator um\u00edst\u011bn do st\u0159edu, zat\u00edmco ve druh\u00e9m byl podle doporu\u010den\u00ed v\u00fdrobce posunut na stranu s v\u011bt\u0161\u00edm zah\u0159\u00e1t\u00edm. <\/p>\n

Bylo zji\u0161t\u011bno, \u017ee ve druh\u00e9m p\u0159\u00edpad\u011b byla tepeln\u00e1 pasta rozd\u011blena nerovnom\u011brn\u011b (na jedn\u00e9 stran\u011b byla vrstva ten\u010d\u00ed) a nelze zcela vylou\u010dit, \u017ee druh\u00e1 porucha byla zp\u016fsobena nespr\u00e1vnou instalac\u00ed chladi\u010de. U procesoru CPU Ryzen 9950X je uvedena pot\u0159eba odvodu tepla 170 W (TDP, Thermal Design Power), p\u0159i\u010dem\u017e pou\u017e\u00edvan\u00fd chladic\u00ed syst\u00e9m zaji\u0161\u0165oval odvod tepla 165 W. Chyb\u011bj\u00edc\u00edch 5 W bylo kompenzov\u00e1no dal\u0161\u00edmi ventil\u00e1tory v po\u010d\u00edta\u010di a n\u00edzkou teplotou v m\u00edstnosti, kter\u00e1 \u010dinila p\u0159ibli\u017en\u011b 20 \u00b0C. Oba procesory selhaly po n\u011bkolika m\u011bs\u00edc\u00edch provozu p\u0159i vysok\u00e9 z\u00e1t\u011b\u017ei. V r\u00e1mci projektu se ji\u017e del\u0161\u00ed dobu pou\u017e\u00edv\u00e1 je\u0161t\u011b jeden server<\/a> ve stejn\u00e9 konfiguraci a s t\u00edm sam\u00fdm zat\u00ed\u017een\u00edm, a nevyskytuj\u00ed se s n\u00edm \u017e\u00e1dn\u00e9 probl\u00e9my.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 GNU MP (GMP), \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0441 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u0439 \u0442\u043e\u0447\u043d\u043e\u0441\u0442\u044c\u044e, \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u043e\u0431 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0435 \u0441 \u043f\u043e\u0432\u0442\u043e\u0440\u043d\u044b\u043c \u0432\u044b\u0445\u043e\u0434\u043e\u043c \u0438\u0437 \u0441\u0442\u0440\u043e\u044f \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u0441\u0435\u0440\u0438\u0438 AMD Ryzen 9000 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b Zen 5 \u0432 \u0445\u043e\u0434\u0435 \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438. \u041f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u0431\u044b\u043b\u043e \u0432\u044b\u0437\u0432\u0430\u043d\u043e \u043f\u0435\u0440\u0435\u0433\u0440\u0435\u0432\u043e\u043c, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0438\u043c \u043f\u0440\u0438 \u0438\u043d\u0442\u0435\u043d\u0441\u0438\u0432\u043d\u043e\u043c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 GMP. \u0414\u043e \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0430\u043d\u0430\u043b\u0438\u0437\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":141780,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-141779","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Mo\u017en\u00e9 po\u0161kozen\u00ed CPU AMD Zen 5 p\u0159i pou\u017e\u00edv\u00e1n\u00ed knihovny GNU MP | 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