{"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\/sv\/blog\/news\/vozmozhnoe-povrezhdenie-cpu-amd-zen-5-pri-ispolzovanii-biblioteki-gnu-mp","title":{"rendered":"M\u00f6jlig skada p\u00e5 AMD Zen 5 CPU vid anv\u00e4ndning av GNU MP-biblioteket","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Utvecklarna av GNU MP (GMP)-biblioteket, som tillhandah\u00e5ller funktioner f\u00f6r att utf\u00f6ra aritmetiska operationer med godtycklig precision, har varnat anv\u00e4ndarna om en incident med \u00e5terkommande haverier av AMD Ryzen 9000-processorer baserade p\u00e5 Zen 5 mikroarkitekturen under testning av biblioteket. Det antas att skadorna p\u00e5 processorerna orsakades av \u00f6verhettning som uppst\u00e5r vid intensiv anv\u00e4ndning av GMP. F\u00f6re den fullst\u00e4ndiga analysen av problemet avr\u00e5des anv\u00e4ndarna fr\u00e5n att aktivt anv\u00e4nda GMP p\u00e5 system med AMD Zen 5 CPU. <\/p>\n

Orosmomentet orsakas av \u00e5terkommande haverier av AMD Ryzen 9950X (AMD Zen5 X16 4300MHz) CPU p\u00e5 servern<\/a> testinfrastrukturen f\u00f6r projektet. Det f\u00f6rsta haveriet intr\u00e4ffade i februari 2025, varefter processorn byttes ut under garanti. I slutet av augusti upprepades situationen och den garantiutbytta CPU:n, installerad i ett system med en annan str\u00f6mf\u00f6rs\u00f6rjning och moderkort, slutade ocks\u00e5 fungera med samma symptom som visade \u00f6verhettning (en missf\u00e4rgad omr\u00e5de p\u00e5 chipet, med en diameter av ungef\u00e4r 1 centimeter).

\"M\u00f6jlig<\/center> <\/p>\n

Enligt prelimin\u00e4ra uppgifter anv\u00e4nder GMP-biblioteket f\u00f6r intensiva cykler med MULX-instruktionen, vilket leder till en avsev\u00e4rt h\u00f6gre energif\u00f6rbrukning p\u00e5 system med AMD Zen 5 \u00e4n uppgivet, och of\u00f6rm\u00e5ga att kompensera f\u00f6r \u00f6verhettningen med kylsystemet som valts enligt specifikationen. Under b\u00e5da haverierna genomf\u00f6rdes ett test med manuella assembleringscykler med en MULX-instruktion, vilket skapade maximal belastning. <\/p>\n

I systemen anv\u00e4ndes moderkort Asus Prime B650M-K och Asus Prime B650M-A WIFI II, samt str\u00f6mf\u00f6rs\u00f6rjningar fr\u00e5n Corsair, SF450 och RM650. I b\u00e5da konfigurationerna anv\u00e4ndes Noctua NH-U9S kylsystem, men i det f\u00f6rsta fallet var kylfl\u00e4nsen installerad centralt, medan den i det andra fallet f\u00f6rflyttades \u00e5t sidan med mer v\u00e4rme, enligt tillverkarens rekommendation. <\/p>\n

Det noteras att i det andra fallet var termalpastan inte j\u00e4mnt f\u00f6rdelad (p\u00e5 ena sidan var lagret tunnare) och det kan helt uteslutas att det andra felet orsakades av felaktig installation av kylfl\u00e4nsen. CPU Ryzen 9950X har ett angivet v\u00e4rmeavledningsbehov p\u00e5 170 W (TDP, Thermal Design Power), medan det anv\u00e4nda kylsystemet avvecklade 165 W. De saknade 5 W kompenserades med ytterligare fl\u00e4ktar i chassit och en l\u00e5g temperatur i rummet, som l\u00e5g runt 20\u00b0C. B\u00e5da processorerna slutade fungera efter n\u00e5gra m\u00e5naders drift vid h\u00f6g belastning. I projektets infrastruktur anv\u00e4nds redan en annan server<\/a> i samma konfiguration och med samma belastningsniv\u00e5, och det uppst\u00e5r inga problem med den.
\n
K\u00e4lla: 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\udd47M\u00f6jlig skada p\u00e5 CPU AMD Zen 5 vid anv\u00e4ndning av GNU MP-biblioteket | ProHoster","description":"Utvecklarna av GNU MP-biblioteket (GMP), som tillhandah\u00e5ller funktioner f\u00f6r att utf\u00f6ra aritmetiska operationer med godtycklig noggrannhet, har varnat anv\u00e4ndare om en incident med \u00e5terkommande funktionsst\u00f6rningar hos processorer i serien.","canonical_url":"https:\/\/prohoster.info\/sv\/blog\/news\/vozmozhnoe-povrezhdenie-cpu-amd-zen-5-pri-ispolzovanii-biblioteki-gnu-mp","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sv_SE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0435 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