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8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 1/41
© 2012 Babak Falsafi
!"#$%&'(*"' +,--./0 1,2,3
4.25 1,67 8.9.:"'
"#$#% &#'(#)
*+,-./0,1 2.03'045-.0.'0456.7
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 2/41
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 3/41
© 2012 Babak Falsafi
DEF G= 2H?0=-=C#' @,0:/7
&04, 5-.#5-( 09 5+<+/#' ?'#I0,> ?,0'+9-,#C0=
2H?0=-=C#' +=.,-#(- += 5-=(+/J K 5-.,-#(- += .0(/
D=/-' LMML1 NOPN
D=/-' Q-7#'->1 RMMO
OR1MMM 0?(;(-.0=5
NR1MMM1MMM1MMM 0?(;(-.0=5
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 4/41© 2012 Babak Falsafi
G ",+-9 S+(/0,J 09 DE
• &,0> (.+-=C). +=(/,4>-=/ /0 .0>>05+/J
•
&,0> ?,054./ /0 (-,A+.-
NOPM(T
U3 2,#
30>>4=+.#C0= 2,#
V#+=9,#>-(NOWM( NOOM( E05#JX
30=(4>-, 2,#
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 5/41© 2012 Babak Falsafi
DEF E7- 30=(4>-, 2,#
U7-=0>-=#' .7#=<- 9,0> 5-.#5-( #<0F
• D=(/#=/ .0==-.CA+/J
• B70??+=< =0: 0='+=-
•
*#+'J +=/-,#.C0= Y ZMM ?-0?'-
• G4<>-=/-5 ,-#'+/J
• B/,-#>+=< >0A+-(
•
[66
DE +( #/ .0,- 09 -A-,J0=-\( '+9-]
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 6/41© 2012 Babak Falsafi
37#=<- += DE\( ^#=5(.#?-
➜ 2>-,<-=.- 09 *#/#T3-=/,+. _=+A-,(- – DE 90.4( 0= >#((+A- 5#/#
• 2=5 09 *-==#,5 B.#'+=< – S+<7-, 5-=(+/J! 7+<7-, -=-,<J
•
*#/#T3-=/,+. _=+A-,(- >--/( 2=-,<J `#''
`7#/ #,- 5-(+<= +>?'+.#C0=(a
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 7/41© 2012 Babak Falsafi
84, *#/#T3-=/,+. _=+A-,(-F
*#/# @,0:+=< 9#(/-, /7#= E-.7=0'0<J
• N6W b$J/-( += RMNN
• 30>>-,.- -=C,-'J
5#/#T5,+A-=
• B.+-=.- 7#=5'+=<
>#((+A- 5#/#
• 30>?#=+-(
(?-=5+=< ccc /0
.0''-./;#=#'Jd- 5#/#
• U-,(0=#'+d-5
.0>?4C=<M
RMM
LMM
eMM
WMM
NMMM
NRMM
C0:5'"9"(? D6"425
*+""60E- 9,43
NOOW RMMM RMMR RMML RMMe RMMW RMNM RMNR
C"$ C0' 1,2,
F,605"%-0 -.G0
C06,<?20- *H IJIK <?20-3 "@ 1,2,
`+=/-,30,? B4,A-J1 :::6:+=/-,.0,?6.0>
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 8/41© 2012 Babak Falsafi
• 2,# 09 f%=0:'-5<- -.0=0>Jg
• hMi 09 -.0=0>+. A#'4- += 5-A-'0?-5 .04=/,+-(
• *0>+=#=/ (4??'JT.7#+= .0>?0=-=/ 09 ?,054./(;(-,A+.-(
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 9/41© 2012 Babak Falsafi
*#/#T3-=/,+. B.+-=.-F
fE7- &04,/7 U#,#5+<>g
V+=+=< 5#/# 9,0>F
• G,.7+A-(
• S4>#=(
• B-=(0,(;+=(/,4>-=/(
•
B+>4'#C0=(
_=+9J+=< /7-0,J1 -H?-,+>-=/#C0=1 (+>4'#C0=1#=#'JC.( 0= >#((+A- 5#/#
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 10/41© 2012 Babak Falsafi
*#/# 30>-( += j#,+04( &'#A0,(
8,2099.20
!"##06:0
>0,925
80,6:5
L.@0
8.#%9,&"'
M'2062,.'#0'2
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 11/41© 2012 Babak Falsafi
D/\( #'' #$04/ G..-((+=< *#/#]
Data Centers
!9"%; !"#$%&'(
G .0>?4C=< ?#,#5+<> (7+k /0 -=#$'- 4$+l4+/04( .0==-.CA+/J
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 12/41© 2012 Babak Falsafi
>"4 2" ;0-.(' @"6 #,--./0 ;,2,
?
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 13/41
© 2012 Babak Falsafi
37#=<- += DE\( ^#=5(.#?-
• 2>-,<-=.- 09 *+<+/#' _=+A-,(- – DE 90.4( 0= >#((+A- 5#/#
➜ 2=5 09 f&,-- 2=-,<Jg – S+<7-, 5-=(+/J! 7+<7-, -=-,<J
•
*#/#T.-=/,+. _=+A-,(- >--/( 2=-,<J `#''
`7#/ #,- 5-(+<= +>?'+.#C0=(a
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 14/41
© 2012 Babak Falsafi
DE 2=-,<J +( B700C=< _?]
DE ,+5+=< 0= /-.7=0'0<J /7#/:#( -=-,<JT9,+-=5'J
•
2H?0=-=C#''J $-m-,
?-,90,>#=.-1 5-=(+/J
• 30=(/#=/ ?0:-, -=A-'0?-
"4/1 -=-,<J +( (700C=< 4?]
S04(-70'5 2=-,<J += /7- _n
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 15/41
© 2012 Babak Falsafi
S04(-70'5 2=-,<J += /7- _no_n "2pp1 RMMWq
3-'' ?70=-(1
^#?/0?(
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 16/41
© 2012 Babak Falsafi
*#/# .-=/-, 2=-,<J += /7- _Bo-H/,#?0'#/-5 9,0> 2=-,<J B/#,1 RMMPq
• 2H?0=-=C#' .0(/( +9 =0/ >+C<#/-5
• E05#J1 .#,$0= 900/?,+=/ 09 #+,'+=- +=54(/,J
N . 9 9 . " ' O . 9 " 4 , P 5 " % 6 Q ? 0 , 6
RMMN RMMh RMMO RMNZ RMNP
! " - 2 . ' N
. 9 9 . " ' R
M
hM
NMM
NhM
RMM
RhM
ZMM
ZhM
LMM
`+/7 NRi #==4#' +=.,-#(-
+= 2'-./,+.+/J 30(/
RMMN RMMh RMMO RMNZ RMNP
M
RMM
LMM
eMM
WMM
NMMM
NRMM
NLMM
2=-,<J B/#,r(
?,0s-.C0=(
U,0s-.C0=(:+/704/ A0'/#<-
,-54.C0=
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 17/41
© 2012 Babak Falsafi
2=-,<J 30(/ t 3#?+/#' 30(/
• B-,A-,( #,- <-u=< ,-'#CA-'J .7-#?-,
•
U0:-, +( $-<+==+=< /0 50>+=#/- .0(/
v#>-( S#>+'/0=\( "'0<1
>A5+,0=#6.0>1 RMMW
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 18/41
© 2012 Babak Falsafi
2=5 09 f&,--g 2=-,<J
"-90,- oNOPMtRMMMqF – *-==#,5 (.#'+=<
–
_(-5 /0 >#%- /,#=(+(/0,( (>#''-,
–
B>#''-, /,#=(+(/0,( '-(( -'-./,+.+/J /0 0?-,#/-
Q0: oRMMLTqF – 30=C=4- /0 >#%- /,#=(+(/0,( (>#''-,
– "4/1 /7-J 4(- (+>+'#, -'-./,+.+/J /0 0?-,#/-
I 26,'-.-2"6 H IS 0'06(? K 26,'-.-2"6- H IS 0'06(? T 26,'-.-2"6- H IS 0'06(?
R J-#,( '#/-, R J-#,( '#/-,
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 19/41
© 2012 Babak Falsafi
&04, 5-.#5-( 09 *-==#,5 B.#'+=<
•
U H ! VK @• D=.,-#(- += 5-A+.- .04=/
• ^0:-, (4??'J A0'/#<-(
➜
30=(/#=/ ?0:-,;.7+?
*-==#,5 -/6 #'61 NOPL p0$-,/ S6 *-==#,51 ?+./4,- 9,0> ̀ +%+?-5+#
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 20/41
© 2012 Babak Falsafi
^-#%#<- n+''-5 *-==#,5 B.#'+=<
^-#%#<-F
• 2H?0=-=C#' += +=A-,(- 09 j/7
•
2H?0=-=C#' += /->?-,#/4,-• ^+=-#, += 5-A+.- .04=/
E0 (:+/.7 :-''
•
>4(/ %--? j55;j/7 Y Z
➜ j55 .#=\/ <0 50:=
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 21/41
© 2012 Babak Falsafi
2=5 09 *-==#,5 B.#'+=< oDEpBq
B4??'J A0'/#<-( <0+=< 50:= #/ >4.7 '0:-, ,#/-]RN
M
M6R
M6L
M6e
M6W
N
N6R
N6L
RMMN RMMh RMMO RMNZ RMNP RMRN
U " 4 0 6
8 % $ $ 9 ? V ; ;
E05#J
RMMN
RMMh
RMMW_
RMMOB'0?-wT6MRe
B'0?-wT6MhZ
V+%- &-,5>#=1 9,0> DEpB ?#<-(1 v4'J RMNN
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 22/41
© 2012 Babak Falsafi
*#,% B+'+.0=F 2=5 09 V4'C.0,- B.#'+=<
3#= =0/ ?0:-, 4? .7+?90, 94''J ?#,#''-' B`
U#,#''-'+(> 7#( '+>+/(-A-= += B-,A-,(]
V4(/F• (?-.+#'+d-
• (-'-.CA-'J ?0:-, 4?
1
2
4
8
16
32
64
128
256
512
1024
2004 2007 2010 2013 2016 2019
N u m b e r o
f C o r e s
Year of Technology Introduction
Max EMB Cores
EMB + 3D mem
GPP + 3D mem
1,67
8.9.:"'
S#,5#A-''#( -/6 #'61 fE0:#,5 *#,% B+'+.0=
+= B-,A-,(g1 D222 V+.,01 RMNN
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 23/41
© 2012 Babak Falsafi
V#((+A- *#/# >--/( 2=-,<J `#''
?D/\( C>- 90, 24,0?- /0 '-#5 /7- :#JF
• 2H+(C=< D=54(/,+#' 2.0(J(/-> o-6<61 GpV1 BE1 BGUq
• ^0=< '-#5-,(7+? += -=-,<JT-x.+-=/ 5-(+<=
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 24/41
© 2012 Babak Falsafi
37#=<- += DE\( ^#=5(.#?-
• 2>-,<-=.- 09 *#/#T3-=/,+. _=+A-,(- – DE 90.4( 0= >#((+A- 5#/#
• 2=5 09 f&,-- 2=-,<Jg – S+<7-, 5-=(+/J! 7+<7-, -=-,<J
➜
*#/#T3-=/,+. _=+A-,(- >--/( 2=-,<J `#''
`7#/ #,- 5-(+<= +>?'+.#C0=(a
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 25/41
© 2012 Babak Falsafi
`7#/ #,- /7- 5-(+<= D>?'+.#C0=(a
B70,/ /-,>F
• V4'C.0,- (.#'+=< o?#,#''-'+(>q
• ^0:-, -=-,<J X 7+<7-, 5#/# .0==-.CA+/J
^0=< /-,>F
• *#,% B+'+.0=
•
U,0$#$+'+(C. .0>?4C=<
• S0'+(C. D=/-<,#C0=
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 26/41
© 2012 Babak Falsafi
2H#>?'- B70,/TE-,> B0'4C0=(F
B.#'-T84/ G??( += *#/#.-=/-,("
V#((+A- B.#'-
"
cNMMX V +=A-(/>-=/
"
hTRM V` ?0:-, $45<-/
"
`7Ja
"
V#((+A- 5#/# (-/(1 .0>?'-H
l4-,+-(
"
@'0$#' 5->#=5
"
G??'+.#C0=(
"
`-$ (-#,.71 >-5+# (/,-#>+=<1
(0.+#' .0==-.CA+/J
" B.#'-T04/ $J 5-(+<=
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 27/41
© 2012 Babak Falsafi
37#,#./-,+(C.( 09 B.#'-T84/ G??(
• V#=J +=5-?-=5-=/ ,-l4-(/(;/#(%(
• S4<- 5#/#(-/ (?'+/ +=/0 (7#,5(
• V+=+>#' .0>>4=+.#C0= #>0=< (-,A-,(
^0#5 $#'#=.-,;
V#(/-, =05-
3 ' + - = / p - l
4 - ( / ( *#/#(-/
B-,A-,
B-,A-,
B-,A-,
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 28/41
© 2012 Babak Falsafi
S0: 2x.+-=/ #,- E05#J\( B-,A-,(a
• 3,-#/-5 $-=.7>#,% (4+/-
– *+A-,(- (-/ 09 .'045 :0,%'0#5(
–
y4#=C)-5 7+<7T'-A-' $-7#A+0,
• B/45+-5 0zT/7-T(7-'9 7#,5:#,-
–
_(-5 ?-,90,>#=.- .04=/-,( – D5-=C)-5 =--5( 09 .'045 #??(
Modern CPUs don’t match needs of cloud apps
8/11/2019 darksilicon-BigData.pdf
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© 2012 Babak Falsafi
S0: 2x.+-=/ #,- E05#J\( B-,A-,(a
• 3,-#/-5 $-=.7>#,% (4+/-
– *+A-,(- (-/ 09 .'045 :0,%'0#5(
–
y4#=C)-5 7+<7T'-A-' $-7#A+0,
• B/45+-5 0zT/7-T(7-'9 7#,5:#,-
–
_(-5 ?-,90,>#=.- .04=/-,( – D5-=C)-5 =--5( 09 .'045 #??(
Modern CPUs don’t match needs of cloud apps
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 30/41
© 2012 Babak Falsafi
E05#J\( B-,A-,(F Q0/ E-,,+$'J 2x.+-=/]
0
1
2
3
4
A p p l i c a t i o n I P C
Application IPC
0%
25%
50%
75%
100%
0
1
2
3
4
T o t a l E x e c u t i o n C y c l e s
A p p l i c a t i o n I P C
Application IPC Memory Cycles
Execute ~1 instruction per cycle
8/11/2019 darksilicon-BigData.pdf
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© 2012 Babak Falsafi
`0,%'0#5;B-,A-, V+(>#/.7 {GBU^8B RMNR|
C"" @04:"60-W
!"60- 2""@,2W} } }
IJ +N *XJY3 4,-20 "@ -$,:0 *'" 60%-03W
NQF
%'%-0;W
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 32/41
© 2012 Babak Falsafi
24,03'045 B-,A-, {DB3G RMNR|F
G B.#'-T84/ 37+? 90, V#((+A- *#/#o:::6-4,0.'045(-,A-,6.0>q
Z* B03;*pGVF
•
B:#,>( 09 GpV .0,-(• ^+m'- .#.7-
• NMMMH >0,- .0==-.CA+/J
•
NMH '-(( (J(/-> -=-,<J• p4=( 0zT/7-T(7-'9 B` (/#.%
_3J?,4(
~04, &4/4,- NT`#m
*#/#.-=/-, 37+?
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 33/41
© 2012 Babak Falsafi
B?-.+#'+d#C0= .#= $4J NMMMH += 2=-,<Jo9,0> # (#>?'- 09 RM .7+?(q
! #$%&$' #(
)*+,-./%&0
+.:6"$6":0--"6- 18UE- !%-2"#
V+7#+ "45+41 f8= /7- 2=-,<J 2x.+-=.J 09 30>?4/#C0=g1 RMML
N0P06
U 0 ' & % #
8/11/2019 darksilicon-BigData.pdf
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© 2012 Babak Falsafi
"-J0=5 24,03'045 B-,A-,F
j-,C.#''JTD=/-<,#/-5 B-,A-,( ojDBGq
D5-=C9J -=-,<J 70<(F
• B?-.+#'+d-
•
26<61 D=/-'\( E3U;DU 3U_
U0:-, 4? o5#,% (+'+.0=q
(-,A+.-( 0= /7- •J• 8/7-,(F E->#> € DQpDG1
VBp1 _3B*
3U_
S-#? `+5<-/
V#.7+=-
^-#,=+=<
`+5<-/
*" `+5<-/
Q-/:0,%`+5<-/
D;8 `+5<-/
VZ8[ 8?-20#\]'\!5.$
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 35/41
© 2012 Babak Falsafi
2H#./ A(6 U,0$#$+'+(C.
V4.7 .0>?4/#C0= +( -,,0,T,-(+'+-=/F
• V#.7+=- '-#,=+=<;#=#'JC.(
• D>#<- ?,0.-((+=<;A+(4#' .0>?4/#C0=
•
G45+0;(?--.7
• B-#,.7
B+>+'#,'J1 /:0 •#A0,( 09 5#/#
• 2H#./F #z-./( 94=.C0=#'+/J o?0+=/-, #55,-((q
• U,0$#$+'+(C.F #z-./( l4#'+/J o?+H-'( += +>#<-q
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 36/41
© 2012 Babak Falsafi
U-,90,#/-5 oB%+??-5q 30>?4/#C0=
<";?26,:7 $-=.7>#,%
oUGpB23q
• 30>?+'-,T5,+A-=
?-,90,#C0=• B%+? LMi 09
.0>?4/#C0=
• V#+=/#+=( /,#.% 0=
7-#51 .7-(/ #=5 '-<(
30>?4/#C0= 50-( =0/
7#A- /0 $- -H#./]
S0z>#= -/6 #'61 f_(+=< ^00? U-,90,#C0= /0
*J=#>+.#''J G5#?/ G??'+.#C0= "-7#A+0,
/0 V--/ p-#'TE+>- *-#5'+=-(g1 RMNM
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 37/41
© 2012 Babak Falsafi
*-BJp-F U,0$#$+'+(C. 30>?4C=<
2H?'0+/ ,-(+'+-=.- +=>#((+A- 5#/#
• U#,CC0= #..0,5+=< /0
,-(+'+-=.-
• U4(7 A0'/#<-( 50:= /0
f4=(#9-g ,-<+0=(
•
V#H+>+d- /7,04<7?4/ :+/7'-(( -=-,<J
Q83
30,-30,- 30,-30,-
30,-30,- 30,-30,-
FilterFilter FilterFilter
VideoVideo VideoVideo
Audio Audio Audio Audio
V^V^ V^V^
M S , : 2
U 6 " < , < . 9 . - & :
^0-.9.0'2
1,2,
!"'26"9
1,2,
8/11/2019 darksilicon-BigData.pdf
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© 2012 Babak Falsafi
S0'+(C. D=/-<,#C0= "-J0=5 DE
•
Q--5 +=/-,5+(.+?'+=#,J
o(.+-=.-( X /-.7=0'0<Jq
• E+<7/-, +=/-<,#C0=
-=#$'-( 7+<7-,-x.+-=.J
• &,0> B` /0 2=-,<J
•
^0=<T/-,> A+(+0=F
➔ M'06(?\'0%26,9 ZC
8 " _ 4 , 6 0
Z ' @ 6 , - 2 6 % : 2 % 6 0
8/11/2019 darksilicon-BigData.pdf
http://slidepdf.com/reader/full/darksilicon-bigdatapdf 39/41
© 2012 Babak Falsafi
3-=/-, /0 $,+5<- *#/# :+/7 2=-,<J –
Ne 9#.4'/J1 hM ,-(-#,.7-,(
• G:#,5T:+==+=< 9#.4'/J;/-#>
– p04<7'J cZV;J-#, 94=5+=<
–
*#/#.-=/-, 8$(-,A#/0,J o/-(/ $-5q
p-(-#,.7F
–
2=-,<JT(.#'#$'- *#/#.-=/-,( 9,0>?,0<,#>>+=< /0 .00'+=<
– B.#'-T04/ 5#/# #=#'JC.( K >#=#<->-=/
– V#((+A- 5#/# #??'+.#C0=( K (-,A+.-(
ZO
8/11/2019 darksilicon-BigData.pdf
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© 2012 Babak Falsafi
",+=<+=< +/ G'' E0<-/7-,
•
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