251931229 Multi Core Processors Ppt

8/9/2019 251931229 Multi Core Processors Ppt

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GROUP MEMBERS

Ali Raza SP13-BCS-006

Usman Ahmed SP13-BCS-017

Sajid Imtiaz SP13-BCS-025

Mudassa Rehman SP13-BCS-0


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TOPIC

Multi-!"e #"!ess"s


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HISTORY

In the eal$ 1%70&s the 'ist Mi!"#"!ess" (as de)el"#ed *$

Intel+

It (as a , *it ma!hine that (as named the ,00,

he ,00, (as '"ll"(ed *$ Intel&s .00. and .0.0/ as (ell asm"t""la&s 6.00 and 6.000


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CHANGES TIME TO

TIME

ith ea!h ne( eneati"n "' #"!ess"s thee (ee se)eal

de)el"#ments su!h as

Smalle sizeaste

In!eased heat dissi#ati"n

4eate C"nsum#ti"n "' #"(e


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SINGLE CORE

PERFORMANCE

n te!hniue used t" in!ease sinle !"e #e'"man!e (as

Pi#elinin *einnin "the (aitin instu!ti"ns *e'"e the

'ist 'inishes


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SINGLE CORE

CONTINUED

An"the te!hniue (as multitheadin

Multitheadin in)"l)es ee!uti"n "' t(" se#aate

theads+

ime is di)ided and intela!ed *et(een the t("

theads in "de t" simulate simultane"us

ee!uti"n


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PROBLEMS WITH

SINGLE CORE

" ee!ute the tas8s 'aste $"u must in!ease the !l"!8 time+

In!easin !l"!8 times t"" hih dasti!all$ in!eases #"(e

!"nsum#ti"n and heat dissi#ati"n t" etemel$ hih le)els/ma8in the #"!ess" ine''i!ient+


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MULTI CORE

Ceatin t(" !"es " m"e "n the sametime/ in!eases #"!essin #"(e (hile8ee#in !l"!8 s#eeds at an e''i!ient le)el+

A #"!ess" (ith 2 !"es unnin ate''i!ient !l"!8 s#eeds !an #"!ess

instu!ti"ns (ith simila s#eed t" a sinle!"e #"!ess" unnin at t(i!e the !l"!8s#eed/ $et the dual !"e #"!ess" ("uldstill !"nsume less ene$+


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MODEL OF MULTI

CORE


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IMPLEMENTATIONS

(" main (a$s t" ha)e multi#le !"es intea!t ae theshaed mem"$ m"del/ and the disti*uted mem"$m"del+

In the shaed mem"$ m"del/

all !"es shae the same !a!he

mem"$+

In the disti*uted mem"$ m"del/

ea!h !"e has its "(n !a!he

mem"$+


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WHAT IS CACHE AND

SYSTEM BUS

A CPU !a!he is a !a!he used *$ the !ental #"!essin unit9CPU: "' a !"m#ute t" edu!e the a)eae time t" a!!ess data

'"m the main mem"$+ he !a!he is a smalle/ 'aste mem"$(hi!h st"es !"#ies "' the data '"m 'euentl$ used mainmem"$ l"!ati"ns

A s$stem *us is a sinle !"m#ute *us that !"nne!ts the maj"!"m#"nents "' a !"m#ute s$stem+ he te!hniue (as

de)el"#ed t" edu!e !"sts and im#")e m"dulait$+ It !"m*inesthe 'un!ti"ns "' a data *us t" !a$ in'"mati"n/ an addess *ust" detemine (hee it sh"uld *e sent/ and a !"nt"l *us t"detemine its

"#eati"n


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EXAMPLE OF MULTI-

CORE

he Intel !"e du" desin

has a se#aate ;1 !a!he

mem"$ '" ea!h !"e/ *ut

*"th !"es shae an ;2

!a!he+


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EXAMPLE OF MULTI-

CORE

he AM< Athl"n 6, =2

im#lementati"n has

se#aate ;1 and ;2

!a!he mem"$ '" ea!h

!"e+


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MULTI-CORE

ADVANTAGES

>a)in multi !"es *e the same ma8es #"du!ti"n easie and

8ee#s instu!ti"n !"m#leit$ t" a minimum+

>a)in di''eent !"es that ae s#e!ialized in s#e!i'i! tas8sin!eases !"m#leit$ *ut has the #"tential t" *e mu!h m"e

e''i!ient in s#eed and #"(e !"nsum#ti"n+


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MULTI-CORE

ADVANTAGES

hile ("8in (ith man$ theads/ a Multi C"e #"!ess"

(ith n !"es !an ee!ute n theads simultane"usl$ *$

assinin a !"e t" ea!h thead+

A Sinle !"e #"!ess" must multithead (ith e)e$ sinle

thead+


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251931229 Multi Core Processors Ppt

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