Kule mpelaveki, Linus Torvalds (umenzi we Linux kernel) wabelane ngoluvo lwakhe kuluhlu lokuposa iseti yomyalelo I-Intel AVX-512 efumaneka kwezinye zezi processors.
Kwingxelo ayishiyileyo, uTorvalds Ndiyayikhankanya loo nto «lindela ukuba i-AVX-512 izokufa kabuhlungu«.
Kubatata kaLinux, Iseti yomyalelo we-AVX-512 inenzuzo kuphela kwimarike ye-HPC kwaye inemiqobo yokwenyani. Ngokutsho kwakhe, i-Intel kufuneka iyeke ukuchitha izixhobo zayo kwiiseti zemiyalelo emitsha ukugxila kwizinto ezibaluleke ngokwenene.
Umenzi wetshiphu waseMelika u-Intel kutshanje ubhengeze ukuba iiprosesa zayo ezizayo ze-Alder Lake aziyi kuxhasa iseti yemiyalelo ye-AVX-512.
I-AVX-512 yiseti ye-512-bit izandiso kwimiyalelo ye-SIMD. (Izandiso zeVector eziPhezulu) I-256-bit ye-x86 yomyalelo wesethi yoyilo lwezakhiwo ukuba i-Intel yacebisa kwiminyaka esixhenxe eyadlulayo. Inkxaso ye-AVX-512 yaqala kwi-Intel Xeon Phi x200 iprosesa (Knights Landing) ngo-2016.
Emva kwexesha I-AVX-512 yagqobhoza kwezinye izibonelelo ezivela kumenzi wetshiphu, ikakhulu Skylake-SP, Skylake-X, Cannon Lake kunye Cascade Lake. Okwangoku, i-Intel Cooper Lake yenkampani kunye neeprosesa ze-Ice Lake zixhasa iiseti ezithile ze-AVX-512. I-Intel inamahemuhemu okuba iqinisekisile ukuba iTiger Lake iya kunika amandla i-AVX-512 ngaphambi kokuba ibhengeze ukuba i-Alder Lakes ezayo ayizukuyenza amandla.
Kwi-Torvalds, konke oku akunamsebenzi kwaye unethemba lokuba i-Intel iya kubuyela kwiziseko kwaye iqalise kwakhona inkqubo yayo.
"Ndiyathemba ukuba i-AVX-512 iya kufa kabuhlungu, kwaye i-Intel iqala ukusombulula iingxaki zokwenyani endaweni yokuzama ukwenza imiyalelo yomlingo emva koko yenze i-benchmarks abanokuxhomekeka kuyo," watsho?
Kwakhona ifuna umenzi wetshiphu ukuba agxile ngakumbi kwikhowudi eqhelekileyo, engeyiyo i-HPC (i-computing yokusebenza ephezulu) okanye nayiphi na enye imeko ekhethekileyo engeyomfuneko. Ukuva uTorvalds eyixelela, konke oku kusikhumbuza ngeentsuku apho i-Intel yayilawula imakethi ye-chip, kodwa ukusebenza kwayo kweFP yayiziro.
"Ndikhe ndayithetha ngaphambili kwaye ndiza kuyiphinda kwakhona: ngexesha le-x86's heyday, xa i-Intel yahleka ebhankini kwaye yabulala lonke ukhuphiswano lwayo, wonke umntu wenza ngcono kune-Intel xa isiza kwi-FP Charges.
Ukusebenza kwe-Intel's FP bekungu-zero (ngokuthelekisayo ukuthetha), kwaye loo nto ayinamsebenzi kuba, enyanisweni, akukho mntu ukhathalayo ngaphandle kweebhentshi. Okufanayo kuya kwi-AVX-512 namhlanje nakwixesha elizayo. Ewe, sinokuzifumana izinto ezibalulekileyo. Hayi, ezi zinto azithengisi oomatshini ngokubanzi,” utshilo.
U-Linus Torvalds ukholelwa ukuba i-AVX-512 ineengxaki zangempela kwaye ndingathanda ukuba uhlahlo lwabiwo-mali inkampani eyabela ii-transistors lusetyenziselwe ezinye izinto ezininzi ezifanelekileyo, nokuba i-FP yemathematika (kwi-GPU, endaweni ye-AVX-512).
Ngaphandle koko, ifuna ukuba siyinike ii-cores ezingaphezulu (ngokusebenza kakuhle komsonto omnye, kodwa akukho nkunkuma efana ne-AVX-512) njengoko i-AMD yenzayo. Ke, khumbula ukuba usandula ukusuka kwiprosesa ye-Intel ukuya kwiprosesa ye-AMD Threadripper.
UTorvalds uthe ngale processor, iimvavanyo zakhe "ze-allmodconfig" zikhawuleza kathathu kunangaphambili. Nangona kuthelekiswa ne-AVX-512, uthe ufuna ukuba imida yayo yamandla ifikelelwe ngekhowudi epheleleyo epheleleyo, kwaye kungekhona ngentsholongwane yamandla ye-AVX-512 ecinezela ubuninzi be-frequency (kuba abantu bagqiba ukuyisebenzisela i-memcpy!) .
Ekugqibeleni, uLinus Torvalds uthe ucinga ukuba i-AVX-512 ayilunganga.
“Ewe, ewe, ndinomkhethe. Andiyamkeli ngokupheleleyo ibhentshi yeFP kwaye ndiyaqonda ukuba abanye abantu babakhathalele kakhulu. Ndicinga nje ukuba i-AVX-512 yinto engalunganga ukuyenza. Yenye yezinto endizithandayo. "Lo ngumzekelo omhle wento eyenziwe yi-Intel engalunganga, ngokuyinxenye ngokwandisa ukuhlukana kweemarike," watsho.
Ukuba ufuna ukwazi ngakumbi ngayo, unokuthetha eli khonkco lilandelayo.