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MI STRAL Modeling of Comput er Syst ems and Telecommunicat ion Net works Philippe Nain I NRI A Sophia Ant ipolis Evaluat ion of I NRI A 1B Theme J ouy-en-J osas, Oct ober 22, 2003 Scient if ic goals MI STRAL is devot ed t o building

  1. MI STRAL Modeling of Comput er Syst ems and Telecommunicat ion Net works Philippe Nain I NRI A Sophia Ant ipolis Evaluat ion of I NRI A 1B Theme J ouy-en-J osas, Oct ober 22, 2003

  2. Scient if ic goals MI STRAL is devot ed t o � building mat hemat ical models � developing sof t wares, prot ot ypes f or � evaluat ing � opt imizing � cont rolling perf ormance of st ochast ic discret e-event dynamical syst ems (net works)

  3. Scient if ic goals (cont d.) � Cont ribut e t o f undament al research (st ochast ic processes, game t heory, opt imal cont rol, … ) � Cont ribut e t o net working (prot ocol analysis and opt imizat ion, ressource allocat ion, … ) � Achieve cross-f ert ilizat ion bet ween f undament al research and net work engineering

  4. Composit ion of MI STRAL (Oct . 03) � I NRI A r esear cher s (4) � Eit an Alt man � Kost ya Avr achenkov � Alain J ean-Mar ie (since Oct . 1, 2003) � Philippe Nain (scient . leader ) � Post -doc: Ar zad-Alam Kher ani

  5. Composit ion of MI STRAL (cont d.) � PhD st udent s (6) � Ahmad Al Hanbali ( Ad hoc net work analysis ) � Ur t zi Ayest a ( TCP modeling ) � Flor ence Clevenot ( CDN analysis) � Robin Groenevelt ( Peer-t o-peer analysis ) � Daniele Mior andi ( Bluet oot h ) � Balakr ishna Pr abhu ( TCP over wireless) � Engineer : David Sagnol � Administ r at ive assist ant : Ephie Der iche

  6. Changes in Mist r al since last evaluat ion � Depart ures f rom Mist ral � F. Baccelli in Sep. 1998 (TREC) � A. J ean-Mar ie in Sep. 1998 (U. Mont pellier ) � Z. Liu in Aug. 2000 (I BM, T.J . Wat son) � Arrivals in Mist ral � K. Avr achenkov in Aug. 2000 (CR2) � A. J ean-Mar ie in Oct . 2003 (DR2) --> MAESTRO � S. Alouf in Feb. 2004 (CR2) --> MAESTRO

  7. Main cont r ibut ion - 1 TCP modeling � Gener al model f or calculat ing TCP t hr oughput (ar bit r ar y er godic & st at ionar y packet loss pr ocess) � Fixed-point appr oach f or dimensioning of TCP/ I P net wor ks wit h ar bit r ar y t opology � Ear ly r et r ansmit (I nt er net dr af t ) [Sigcomm ’00, I nf ocom ’02, Sigmet r ics ’00, … ..] Mor e t omor r ow (Kost ya)

  8. Main cont ribut ion - 2 Wireless net works � Capacit y of mult iser vice UMTS net wor ks wit h best -ef f or t applicat ions � Power cont r ol and t r ansmission r at e cont r ol in CDMA cont ext (r eal-t ime) � TCP on ad hoc net wor ks [ Mobicom ’02, Winet ’02, I EEE ToN ’01, ... ] More t omorrow (Eit an)

  9. Main cont ribut ion - 3 On-line est imat ion � Est imat ion mult icast audience � Dif f usion pr ocess (Or nst ein-Uhlenbeck) � Linear f ilt ering (Kalman, Wiener ) � Validat ion against t r aces � Applicat ions: I nt er net TV/ Radio br oadcast [I nf ocom ’01, ’02, I EEE Trans Sign. Pr oc. … ] More t omorrow (P N)

  10. Sof t war e development � WAGON Web ser ver benchmar k and Web t r af f ic gener at or � ALLEGRO Mult imedia (voice, audio) t r af f ic gener at or � ERS Set of t ools f or analysis of DEDS (ht t p:/ / www-sop.inr ia.f r / mist r al/ sof t / er s.ht ml)

  11. I ndust r ial collabor at ions ALCATEL SPACE � Traf f ic modeling f or sat ellit e net works � Design and opt imizat ion of sat ellit e net works Fr ance Telecom � Decision making in compet it ive environment � Ressource allocat ion in UMTS net works (pat ent ) � Perf ormance and cont rol of mult imedia t raf f ic � Generat ion of Web t raf ic on VTHD plat f orm CEGETEL, CS-Telecom � Modeling of mult imedia t raf f ic on I P/ MPLS net works

  12. Posit ioning of MI STRAL � At I NRI A: St rong collaborat ions wit h 1B proj ect s + Met a2, Miaou, Oasis, Trio � I n France: Eurecom, ENST, LAAS, U. Marseille � Out side France Many research groups on PE in t he world (act ive area) Close cont act wit h several of t hem

  13. Nat ional academic collabor at ions � ARC TCP (Armor , Hipercom, Planet e, Rap, Trec) � ARC P RI XNET (Armor , U. Versailles, I BM) � ARC MADDES (Met a2 (now Met alau), Trio) � ARC COMMOBI L (Algo, Hipercom, Sloop (now Mascot t e) � ARC Epsilon (Fract ale, ENST) � AS P erf ormance Modeling (Apache, Armor, Trec, I MAG, ENST, U. Versailles, P aris 13)

  14. I nt er nat ional collabor at ions � Aust ralia (U. Sout h Aust ralia) � China (LI AMA) � I ndia (I I S Bangalore) � I srael (Technion, Tel-Aviv Univ.) � J apan (Tsukuba) � Morocco (Rabat ) � Poland (Univ. Zielona Gora) � Russia (Lyapounov I nst it ut e) � The Net her lands ( CWI , U. Eindhoven, Leiden, Twent e, Vrij e Univ .) � US (I BM, U. Arizona, Br own, Columbia, I llinois, Maryland, Massachuset t s, Bost on U.)

  15. Obj ect ives in 1999-2002 � TCP and impact on net work perf ormance � Maint ain t heoret ical act ivit ies and t ransf er of met hods/ result s t o indust ry � Keep st rong visibilit y of MI STRAL you decide : -)

  16. Next 4 year s � MI STRAL t erminat es (1993-2003)

  17. Next 4 year s (cont d.) � MI STRAL t erminat es (1993-2003) � Creat ion of MAESTRO � Locat ed in Mont pellier and Sophia Ant ipolis � I NRI A, U. Mont pellier , CNRS proj ect

  18. Next 4 year s (cont d.) MAESTRO research t hemes: � I P net works ( short TCP f lows , HS TCP , … ) � Wireless net works ( ad hoc , TCP , WLAN , … ) � Overlay net works ( CDN, P 2P ,… ) � Net working games ( pricing, equilibrium, ...) � Theory of DEDS ( queueing , net wor k calculus , … ) � Cont rol of st ochast ic processes ( MDP, singular pert urbat ion, … )

  19. Next 4 year s (cont d.) Challenges � Find macroscopic models more amenable t o analysis and t o operat ional use � Mast er t ools necessary f or handling t hese models (dif f usions, random graphs, simulat ors, et c) � Cont ribut e t o indust rial product s and st andards

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