mlct.pdf

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1. ϝϧΧϦͷMLج൫ MLCT vol.5
 
 hnakagawa


2. ࣗݾ঺հ • Hirofumi Nakagawa (hnakagawa) • 2017೥7݄ೖࣾ • ॴଐ͸SRE •

   σόΠευϥΠό։ൃ͔Βϑϩϯ τΤϯυ։ൃ·Ͱ΍ΔԿͰ΋԰ • NOT σʔλαΠΤϯςΟετ • https://github.com/hnakagawa

3. ͓࢓ࣄ • ML Platform։ൃ • σʔλαΠΤϯςΟετͱSREͷεΩϧΪϟο ϓΛຒΊΔ • ML Reliability,

   SysML?, MLOps? • SREͷཱ৔͔ΒMLγεςϜͷࣗಈԽΛߦ͏

4. ML Platform • ಺੡ͷML Platform • kubernetesϕʔε • طଘͷML FrameworkΛ࢖༻͠

   ؆୯ʹTraining/ServingΛߦ͏ ؀ڥΛఏڙ

5. ͦͷ͏ͪOSSͰެ։༧ఆ(ଟ෼

6. ϝϧΧϦͷMLར༻ࣄྫ • ײಈग़඼ • ҧ൓ग़඼ݕ஌ • Ձ֨αδΣετ • ΢ΤΠταδΣετ
 ౳ʑ…

   ̍೔਺ઍສpredictionΛߦ͍ͬͯΔ

7. ML Platform Architecture ,VCFSOFUFT $POUSPMMFS $-* $MVTUFS8PSLGMPX %BTICPBSE 4UPSBHF
   (BUFXBZ .FUSJDT

   3VOOFS $PNQPOFOU .FSDBSJ
   .-
   $PNQPOFOU &YUFSOBM
   .JEEMFXBSF

8. Model Training & Serving
 Workflow

9. .-
   1MBUGPSN
   USBJOJOH
   DMVTUFS Workflow for Production $* .-
   1MBUGPSN
   TFSWJOH
   DMVTUFS
   GPS
   UFTU .PEFM
   3FHJTUSZ +PC

   +PC ɾɾ 3&45
 "1* 4USFBNJOH 5'4FSW JOH ɾɾɾ

10. .-
    1MBUGPSN
    USBJOJOH
    DMVTUFS Training Workflow $* .PEFM
    3FHJTUSZ +PC +PC ɾɾɾ 1.

    GitHub΁ͷpushΛτϦΨʹtrainingΛىಈ 2. Training͞ΕͨModel͸Model Registry
 ΁্͕Δ

11. Serving Workflow .-
    1MBUGPSN
    TFSWJOH
    DMVTUFS
    GPS
    UFTU .PEFM
    3FHJTUSZ ɾɾ 3&45
 "1* 4USFBNJOH 5'
    

    4FSWJOH 1. Model RegistryΛ؂ࢹͯࣗ͠ಈͰModel ΛServing 2. Serving&Test͕੒ޭ͢Δͱຊ൪༻k8s manifestΛग़ྗ

12. Container Workflow %BUB4PVSDF
 *NBHF 5FYUɹ 1SFQSPDFT TJOH
    *NBHF &TUJNBUPS
 *NBHF

    17 17 1JDUVSF
    1SFQSPDFT TJOH
    *NBHF 17 It’s own implementation

13. Model Serving APIͷߏ੒ྫ 5FOTPS'MPX
 4FSWJOH 5'
    .PEFM 5'
    .PEFM 'MBTL

    4,
 .PEFM 4,
 .PEFM 4,
 .PEFM gRPC .FSDBSJ
    "1* REST FlaskͰલॲཧΛߦ͍
 ཪͷTensorFlow Servingʹ౤͍͛ͯΔ

14. Model Serving API
 Streaming ver ͷߏ੒ྫ 5FOTPS'MPX
 4FSWJOH 5'
    .PEFM

    5'
    .PEFM .-
    1MBUGPSN
    'SBNFXPSL
    
 PS
 "QBDIF
    #FBN
 4,
 .PEFM 4,
 .PEFM 4,
 .PEFM gRPC PubSub

15. ModelͱίϯςφɾΠϝʔδ • ڊେͳML ModelΛίϯςφɾΠϝʔδʹؚΊ Δ͔൱͔ • ؚΊͳ͍ͷͰ͋Ε͹Կॲʹ഑ஔ͢Δ͔ • ϙʔλϏϦςΟੑͱϩʔυ࣌ؒͷτϨʔυΦϑ •

    ྑ͍ΞΠσΟΞ͕͋Ε͹ڭ͑ͯԼ͍͞…

16. ௨ৗͷAPIͱಛੑ͕ҧ͏ • ѻ͏ϦιʔεɺModelαΠζ͕େ͖͘ͳΔ৔ ߹͕ଟ͍(਺ඦMBʙ਺GB) • CPUɾϝϞϦϦιʔεͷফඅ͕ܹ͍͠ • ৔߹ʹΑͬͯ͸GPU΋࢖͏

17. ϝϞϦফඅ໰୊ • ҧ൓ݕ஌γεςϜͷPython࣮૷෦෼͸࣮ߦ࣌ ʹ໿2GBϝϞϦΛফඅ͢Δˠࠓޙ͞Βʹ૿͑ Δ༧ఆ΋͋Δ • Scikit-learnͰهड़͞Εͨલॲཧ෦෼͕େ͖͘ ͳΓ͕ͪ

18. Pythonͱฒྻੑ • ౰વThread͕࢖͑ͳ͍(GILͷͨΊ) • ϓϩηεຖʹModelΛϩʔυ͢Δͱඞཁͳϝ ϞϦαΠζ͕େ͖͘ͳΔˠ Blue-Green Deployͷো֐ʹͳΔ

19. ਖ਼௚PythonͰͷServing͸
 Πϯϑϥతʹਏ͍ࣄ͕ଟ͍…

20. ϝϞϦΛݡ͘࢖͏ • fork͢ΔલʹmodelΛϩʔυ͠Copy on Write Λޮ͔͢ • k8sͷone process per

    containerηΦϦ͸͋ ͑ͯഁ͍ͬͯΔ

21. Copy On Writeͷ෮श ϝϞϦ ਌ϓϩηε ࢠϓϩηε 2.fork 1BHF
    " 1.allocation ಉ͡ྖҬΛࢀর

22. ϓϩηε͕ϝϞϦͷ಺༰Λ
 ॻ͖׵͑Δͱ… ϝϞϦ ਌ϓϩηε ࢠϓϩηε 1BHF
    " 1BHF
    # OS͕ผͷྖҬΛAllocationͯ͠ݩσʔλΛίϐʔ͢Δ ผͷྖҬΛࢀর

23. Current Issues

24. ߴ౓ͳܧଓతϝϯςφϯε͕ඞཁ • MLػೳ͸σʔλͷ܏޲͕มΘͬͨΓɺ༧૝֎ ͷ໰୊͕ൃੜͨ͠Γͯ͠ɺͦΕΒʹରԠ͠ଓ ͚Δඞཁ͕͋Δ MLػೳ͸ϦϦʔεޙ΋େ͖ͳ ίετ͕͔͔Γଓ͚Δ

25. େ෯ͳࣗಈԽ͕ඞਢ

26. In Progress

27. ߴ౓ͳࣗಈԽ • ࣾ಺ͷσʔλ͔ΒFeature Extraction͢Δ࣮૷ ΛίϯϙʔωϯτԽ • ಛఆͷ໰୊Λղܾ͢ΔϞσϧߏஙΛ͋Δఔ౓ ࣗಈԽ • ϦϦʔεޙͷRe-TrainingɺHyper

    parameter optimizationɺDeploy౳ΛࣗಈԽ

28. AutoFlow 'FBUVSF
    &YUSBDUJPO
    $PNQPOFOUT $MBTTJGJDBUJPO
    $PNQPOFOUT $PODBUFOBUJPO
 $PNQPOFOUT .PEFM
    #VJMEFS $PNQPOFOUT
    

    3FHJTUSZ Ϋϥελ্ͰϞσϧͷ൒ࣗಈߏஙͱϋΠύʔύϥ ϝʔλͷࣗಈௐ੔Λߦ͏

29. AutoServing %FQMPZ ϦϦʔεޙͷਫ਼౓؂ࢹɾRe-TrainingɾRe-Deploy౳ ΛࣗಈͰߦ͏ .POJUPSJOH &WBMVBUJPO )ZQFS
    QBSBNFUFS
    PQUJNJ[BUJPO 3F5SBJOJOH

30. ·ͱΊ • MLʹ͸গ͠௨ৗͱҧ͏Πϯϑϥ͕ඞཁʹͳΔ
 ˠ·ͩϕετɾϓϥΫςΟε͸෼͔Βͳ͍ • ͦ΋ͦ΋MLͳػೳΛຊ֨ӡ༻͠Α͏ͱ͢Δ ͱɺେ෯ͳࣗಈԽɾ࢓૊ΈԽΛਐΊͳ͍ͱ্ ख͘ߦ͔ͳ͍

31. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠!!