introduc)on*–*chris*develder*users.atlantis.ugent.be/cdvelder/papers/2015/develder...networking*for*big*data*applica)ons*...

Introduc)on*–*Chris*Develder*

! PhD,%Ghent%University,%2003%•  “Design%and%analysis%of%op

Dimensioning*(op)cal)*networks*for*cloud*compu)ng*

Chris%Develder,%et(al.%%%Ghent%University%–%iMinds%Dept.%of%Informa

Networking*for*big*data*applica)ons*

Op

Networking*for*big*data*applica)ons*

Op

Dimensioning*networks*for*mul)?site*Data*Centers*

Given:*! Cloud%service%requests%(bandwidth%+%server%capacity)%

! Network%topology%(w/%candidate%DC%loca

Dimensioning*for*clouds:*What’s*different?*

C.(Develder,("Dimensioning((op:cal)(networks(for(cloud(compu:ng",(Invited(panelist(talk(at(ITC(27,(9(Sep.(2015(

Anycast*

Users%do%(in%general)%NOT%care%where%applica

Network*virtualiza)on*

Physical%network%is%logically%par

Key*ques)ons?*

C.(Develder,("Dimensioning((op:cal)(networks(for(cloud(compu:ng",(Invited(panelist(talk(at(ITC(27,(9(Sep.(2015(

Exploi)ng*anycast*to*minimize*capacity?*

1.  Does%choice%of%anycast%algorithm%highly%impact%network%bandwidth%requirements?%

2.  What%is%benefit%of%reloca

!  Impact%of%server%capacity%distribu/on:%(unif%vs%prop)%Smart,%nonQuniform%server%distribu

(2)*Reloca)on*to*maximally*share*resources*

Intui

-20%

-10%

+0%

+10%

+20%

+30%

+40%

+50%

0 100 200 300

Tota

l cos

t

Number of unit demands

NR, 1L

NR, 1LSN

RO, 1L

RO, 1LS

EU-basic, FD, K=3

Total cost relative to the NR, 1L

case

(2)*Reloca)on*to*maximally*share*resources*

Single%link%failures%(1L):%!  Reduc

(3)*Changing*routes*for*)me?varying*traffic*

Resilience%scenarios:%!  Scenario*I:%Do%NOT%change%!  Scenario*II:%May%change%backup%&%synchroniza

Pattern #1, total Pattern #2, total

−6%

−4%

−2%

0%

−7.5%

−5.0%

−2.5%

0.0%

50 100 150 200 50 100 150 200Traffic volume

Rel

ative

cos

t diff

eren

ce

Scenario I(no changes)

Scenario II(change only backup and/or sync)

Scenario III(change working, backup and/or sync)

(3)*Changing*routes*for*)me?varying*traffic*

!  Total%cost%savings%up%to%almost%8%%(pa^ern%#2,%i.e.,%more%mul

Wrap?up*

! Cloud%compu

?*

Thank*you*…*any*ques)ons?*

Chris%Develder%chris.develder@intec.ugent.be%%Ghent%University%–%iMinds%%%

C.(Develder,("Dimensioning((op:cal)(networks(for(cloud(compu:ng",(Invited(panelist(talk(at(ITC(27,(9(Sep.(2015(