Tsev > Exhibition > Ntsiab lus

Multi-core processor Hardware

Mar 14, 2019

Tiam sis

Tus qauv hauv txoj kev loj hlob ntawm txoj haujlwm tau ua ntawm ib qho kev tu ncua ntawm cov cores, raws li processors nrog pua pua lossis txawm txhiab tus cores ua qhov ua tau zoo. Tsis tas li ntawd, ntau tus ntxhais chips sib xyaw nrog ntau lub sijhawm sib txuam, cim-rau-nti, thiab tshwj xeeb-hom "heterogeneous" (los yog asymmetric) cog lus txhawb ntxiv kev ua tiav thiab kev ua tau zoo, tshwj xeeb tshaj yog ua haujlwm multimedia, kev lees paub thiab kev sib txuas lus. Piv txwv, tus tub ntxhais loj.LITTLE cov tub ntxhais kawm muaj cov tub ntxhais kawm ua yeeb yam (hu ua 'loj') thiab lub hwj chim qis (hu ua 'LITTLE'). Muaj kev sib txuas ntawm kev ua kom muaj zog-ua hauj lwm los ntawm kev ua haujlwm-ib-watt nrog cov nplua-nplua los sis ultra fine-grain hwj chim tswj thiab dynamic voltage thiab zaus scaling (ie laptop computers thiab portable media players).


Chips tsim los ntawm qhov pib rau ntau lub cores (es tsis muaj hloov zuj zus los ntawm cov tub ntxhais kawm tawm qauv) yog qee zaum raug xa mus rau cov qauv tsim ntau yam, hais txog kev sib txawv.


Architecture

Qhov muaj pes tsawg leeg thiab kev tshuav nyiaj ntawm cov cores hauv cov tub ntxhais lub ntsiab tsim muaj ntau ntau yam. Ib co architectures siv ib tus qauv tsim dua xwm yeem ("homogeneous"), thaum luag siv sib tov sib xyaw ntawm cov cores sib txawv, txhua qhov ua kom txawv, "heterogeneous".


Tsab xov xwm "CPU designers debate multi-core neej yav tom ntej" los ntawm Rick Merritt, EE Times 2008, nrog rau cov lus qhia:


Chuck Moore [...] qhia tias cov computers yuav tsum zoo li cov xov tooj ntawm tes, siv ntau yam tshwj xeeb cores los khiav cov qauv software uas tau teem los ntawm kev sib koom siab programming interface.


[...] Atsushi Hasegawa, tus thawj coj loj hauv engine ntawm Renesas, feem ntau pom zoo. Nws pom tias lub xov tooj ntawm tes siv ntau lub specialty cores ua haujlwm hauv kev hais kwv txhiaj yog ib qho qauv zoo rau yav tom ntej tej tus qauv tsim tawm.


[...] Anant Agarwal, founder thiab chief executive ntawm startup Tilera, coj tus opposing saib. Nws hais tias ntau tus chips chips yuav tsum muaj homogeneous collections ntawm general-purpose cores kom cov qauv software yooj yim.