Lambar tushe ta kernel ta bayyana ƙarin sirrin AMD Zen

Wani lokaci da suka wuce, labarai game da wasu alamun aiki na AMD Zen microarchitecture godiya ga lambar da aka bayar a cikin kernel na Linux don tallafawa shi. Kuma shine cewa Zen yana farkawa da babbar sha'awa saboda daga AMD sunyi ƙoƙari mafi girma fiye da ɗan adam, suna soke duk ayyukan da suka tsara kuma suna mai da hankali ga ƙoƙarin su akan Zen, suna koyo daga kuskuren ƙananan microarchitectures da suka gabata. A yanzu, an kiyasta cewa yana da haɓaka 40% a cikin IPS idan aka kwatanta da microarchitecture na yanzu.

AMD yana cikin tunani don komawa ga yadda yake kuma ya tsaya kan Intel kuma dawo da kasuwar kasuwa daga mafi kyawun lokutan ta. Don haka, an nemi abokin tarayya mai matukar karfi, Samsung, masana'antarsa ​​sun kasance mafi ci gaba kuma zasu samar da fasahar kera 14nm FinFET (wani abu da Intel ke kasawa kwanan nan kuma aka tilasta shi jinkirtawa da dakatar da ayyukan saboda matsaloli tare da masana'antunta fasaha). Bugu da ƙari, AMD ta ɗauki wasu masu zafin rai cewa Lisa Su ta koma ga koren kamfanin bayan ta rasa su a baya, ban da sauran ƙwararrun masanan.

An sake fasalin kamfanin Kuma maimakon aiki kamar sau 10 ainihin girmansa, kamar dā, yanzu yana aiki azaman ƙaramin kasuwanci mai wahala. Kuma zukatan da nake magana suna da nauyi sosai, kamar Raja Koduri, masanin GPU wanda ya bar AMD zuwa Apple kuma yanzu ya dawo. Mark Papermaster ya kuma yi aiki da Apple, IBM da PA Semi, suna aiki kan ayyuka kamar su PowerPC microprocessor ko kuma iko POWER, yanzu kuma ya shiga AMD. Amma icing din kek din shine Jim Keller (yan kwanaki da suka wuce wanda Elon Musk ya dauka domin Tesla Motor), wanda shima yaje Apple domin jagorantar ARM Ax Series SoCs kuma akwai wasu mutane kalilan wadanda suka san abubuwa da yawa game da kwakwalwan kwamfuta kamar Mai siyarwa.

Wannan shine dalilin da ya sa dole ne Zen ta kasance mai nasara kuma wannan shine yanzu mun ga bayanai daga ƙananan 32 waɗanda Zen za su kai, kamar sunan suna Zeppelin a cikin sakon "AMD Zeppelin (Iyali 17h, Model 00h) kun gabatar da ƙididdigar ƙididdigar aiki wanda aka nuna taCPUID.8000_0008H: EBX [1]. Kuma sadaukar da Umurni na Ritaya mai Ritaya (MSR 0xC000_000E9) ƙari sau ɗaya akan kowane umarnin da yayi ritaya.«. Kuma an samar da facin da ke tafe don kernel na Linux, inda aka ga "core_complex" kuma wanda zai iya komawa zuwa AMD's Compute Unit:

+core_complex_ide = (apicid & ((1 << c->x86_coreid_bits) - 1)) >> 3;

+per_cpu(cpu_llc_id, cpu) = (socket_id << 3) | core_complex_id;