greendroid seminar

8/18/2019 Greendroid seminar

1/20

1

Guide: Sandhya LAssistant Professor Dept. Of ECE SCTCE

Presented by:Sourav Sasidharan (124021Sreeram R (12402112)


2/20

2

ABSTRACT

•

This seminar emphasizes on increasing theutiization o! rarey used siicon" caed #ar$ Siicon"!or an energy e%cient architecture in android&

• 'reen#roid attains this by *ing the dar$ siicon+ith speciaised cores&


3/20

CONTENTS

• ,tiization +a and #ar$siicon

•-.core

• reendroid and its/rchitecture

• -.core nergy e%ciency• -oncusion


4/20

“The nu!er of transistors in a "hip dou!#es e$ery ne% te"hno#o&i"a#node'

(OORE)S LA*

4


5/20

The S"a#in& Proise Of

(oore)s La%

3ears /go Today transistors are

& hz

1 -ore

4 5aster

16 morepenti!u

16 cores

17&2 hz

Today

80nm 22nm &6 hz 6 -ores

647&9

&6 hz

6 -ores

7


6/20

*ith ea"h su""essi$e &eneration+ the per"enta&e of a "hip that

"an a"ti$e#y s%it"h drops e,ponentia##y due to po%er

"onstraints

- A dire"t "onseuen"e of this is Dar/ Si#i"on

– #iits the uti#i0ation of the app#i"ation pro"essors

6

1T2L23AT2ON *ALL


7/20

iization a: #ar$ ;mpications !or ? n68 n

9


8/20

*7AT DO *E DO *2T7 DAR S2L2CON

Goa#: Le$era&e Dar/ si#i"on for ore effi"ient ar"hite"ture

Approa"h:

. i## dar/ si#i"on %ith spe"ia#ised "ores "a##ed ""ores tosa$e ener&y on "oon apps.

8. E,e"ution Fup fro ""ore to ""ore

6. Pro$ide fo"used re"onfi&ura!i#ity to e$o#$in& %or/#oads


9/20

CONSERAT2ON CORES

• Specialized cores forreducing energy – =otcode run by c.cores"and cod

code runs on host cpu

– -.cores uses upto 1 essenergy

– Shared #.cache

• Fully automated toolchain – -.cores automaticay generated

!rom hot program regions

– = generation>S integration

D "a"he

7ost

CP19&enera# purpose;

2 "a"he

Hot code

Cold code

C-Core

8


10/20

ANDRO2D

• ooge?s @SAapp&nvironment !or mobie

devices• Bava appications run on the

#avi$ virtua machine• /pps share a set o! ibraries

(ibc"@penC"SDCite"etc)

/PPC;-/T;@ES

C;FR/R;S#/CG;H-/-=

=/R#/R

C;E,I HREC

10


11/20

Applying C-cores to

Android• /ndroid +e suited !or c.

cores -ore set o! commony

used appications Cibraries are hot code #avi$ virtua machine is

hot code Cibraries"#avi$"$erne

and appication hotspotsc.cores

/PPC;-/T;@ES

C;FR/R;S#/CG;H-/-=

=/R#/R

C;E,I HREC

-.-@RS 11


12/20

*7AT 2S GREENDRO2D

• A o!i#e app#i"ation pro"essor

– 4?n u#ti"ore resear"h prototype

– Tar&ets the Android o!i#ephone soft%are sta"/.

– Can e,e"ute &enera#purpose o!i#e pro&ras %ith ties

#ess ener&y

• Sa$es ener&y !y usin& spe"ia#ised "ores "a##ed "onser$ation

"ores9""ores;

• C"ores span appro,iate#y H? per"ent of the e,e"ution tie

12


13/20

The GreenDroid Ar"hite"ture

1


14/20

• Tied attice o! 16 cores

• ach tie contains

o 6.10 /ndroid c.cores

o 2HF #.-ache

o


15/20

• ?IJ C"ores

• 8?J D"a"he

• 8?J (2PS "ore+

2"a"he and on"hip

net%or/

GreenDroid Ti#e #oor p#an

17


16/20

16


17/20


18/20

CONCL1S2ON

-O$er the ne,t ? to I years+ the aount of dar/

si#i"on %i## in"rease e,ponentia##y.

-""ores te"hniue "on$erts dar/ si#i"on into

ener&y sa$in&s.

-Redu"e pro"essor ener&y "onsuption !y H

per"ent for hot "ode.

1


19/20

Re!erence

• Michael B. aylor!" #"$S&"'E (F )E $E* "+, S-#-&($ ES-$

+E-ME/'u0lished 0y -EEE computer society

• Steven Sanson Michael Bedford aylor !)E +EE$+(- M(B-#E "''#-&"-($'+(&ESS(+2"$ "+&)-E&3+E F(+ S-#-&($4S"+, F33+E/'u0lished 0y -EEE computer society

• http255greendroid.ucsd.edu5

http://greendroid.ucsd.edu/http://greendroid.ucsd.edu/http://greendroid.ucsd.edu/


20/20

)"$,

6(3

20

greendroid seminar

Documents