最小限の実装で試す MetalによるGPUコンピューティング

potatotips #37 (iOS/Android開発Tips共有会)での発表に用いたスライドです。

Transcript

1. ࠷খݶͷ࣮૷Ͱࢼ͢
   .FUBMʹΑΔ(16ίϯϐϡʔςΟϯά
   :VLJOBHB"[VNB
   !ZVLZ@B[
   QPUBUPUJQT
   

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2. ࣗݾ঺հ
   :VLJOBHB"[VNB

   ʢզ࠺޾௕ʣ
   J04ΤϯδχΞϓϩάϥϛϯάΠϯετϥΫλʔ
   !ZVLZ@B[
   J0%$Ͱ͸εϚϗ޲͚73ΞϓϦͷ։ൃʹ͍ͭͯൃද
   6EFNZͰʮΈΜͳͷ"*ߨ࠲ʯ։ߨத
   

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3. Metalͱ͸ʁ
   Φʔόʔϔουͷখ͍͞ϩʔϨϕϧͳ
   ίϯϐϡʔλάϥϑΟοΫε"1*
   0QFO(-ͱ0QFO$-ʹࣅͨػೳΛҰͭͷ"1*ʹ౷߹
   

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4. ࠓճͷൃද಺༰
   1. ඳըॲཧ
   2. ฒྻԋࢉ
   MetalʹΑΔ
   

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5. GPUฒྻԋࢉͱ͸ʁ
   GPUͷԋࢉϦιʔεΛը૾ॲཧҎ֎ʹར༻
   

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6. CPUͱGPUͷ࿈ܞ
   EFWFMPQFSBQQMFDPNNFUBM
   

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7. Metal CPUଆͷొ৔ਓ෺ 1
   .5-%FWJDF୯Ұͷ(16ͷΠϯλʔϑΣΠε
   .FUBMؔ࿈ͷ"1*͸ଟ͕͘ϓϩτίϧͰهࡌ
   EFWJDF.5-$SFBUF4ZTUFN%FGBVMU%FWJDF
   
   QSJOUEFWJDFOBNF"QQMF"(16
   

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8. Metal CPUଆͷొ৔ਓ෺ 2
   .5--JCSBSZγΣʔμʔ΁ͷΠϯλʔϑΣΠε
   .5-'VODUJPO.FUBM4IBEJOH-BOHVBHFͰॻ͔Εͨؔ਺
   .5-$PNQVUF1JQFMJOF4UBUF.5-'VODUJPOΛίϯύΠϧ͞Εͨίʔυʹม׵
   .5-$PNQVUF$PNNBOE&ODPEFSίϚϯυΛ(16༻ʹΤϯίʔυ
   .5-$PNNBOE#V⒎FS(16Ͱ࣮ߦ͞ΕΔίϚϯυΛ֨ೲ
   .5-$PNNBOE2VFVF্هͷΩϡʔɺίϚϯυͷ࣮ߦॱΛ؅ཧ
   .5-%FWJDF
   ੜ੒
   

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9. Metal Shading Language
   JODMVEFNFUBM@TUEMJC
   VTJOHOBNFTQBDFNFUBM
   LFSOFMWPJEBEE0OF DPOTUEFWJDFqPBUJOQVU%BUB<<CV⒎FS
   >>
   EFWJDFqPBUPVUQVU%BUB<<CV⒎FS
   >>
   VJOUJE<<UISFBE@QPTJUJPO@JO@HSJE>>
   
   \
   qPBUSFTVMUJOQVU%BUB
   SFTVMUG
   PVUQVU%BUBSFTVMU
   ^
   

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10. GPU vs CPU
    ɾೖྗʹΛ଍ͯ͠Ҿ͘Λ܁Γฦ͢
    ɾ$16ଆͰ͸ɺ্هΛສY/ճ
    ɾ(16ଆͰ͸ສεϨουY/ճ
    LFSOFMWPJEBEE"OE4VCUSBDU DPOTUEFWJDFqPBUJOQVU%BUB<<CV⒎FS
    >>
    EFWJDFqPBUPVUQVU%BUB<<CV⒎FS
    >>
    VJOUJE<<UISFBE@QPTJUJPO@JO@HSJE>>
    
    \
    qPBUSFTVMUJOQVU%BUB
    GPS VJOUJJ/J
    \
    SFTVMUG
    SFTVMUG
    ^
    PVUQVU%BUBSFTVMU
    ^
    

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11. CPU vs GPU
    ഒఔ౓
    

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12. CPU vs GPU ʢର਺ʣ
    $16(16ؒͷ΍ΓͱΓΛ࠷খݶʹ͢Δ͜ͱ͕େࣄ
    

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13. ࣮૷ํ๏ɺಛੑ͕෼͔͖ͬͯͨͱ͜ΖͰ
    Կ͔Ԡ༻ͯ͠ΈΑ͏ʂ
    

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14. ܈஌ೳͱ͸ʁ
    ਓ޻஌ೳͷҰछɺूஂͱͯ͠ߴ౓ͳৼΔ෣͍
    

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15. ܈Εͷ3ͭͷϧʔϧ
    B౳ڑ཭֤ݸମ͕౳ڑ཭ΛอͭΑ͏ʹಈ͘
    Cฒߦ֤ݸମ͕ଞͷݸମͱಉ͡޲͖ʹͳΔΑ͏ʹಈ͘
    D౳଎֤ݸମ͸ଞͷݸମͱಉ͡଎౓ʹͳΔΑ͏ʹಈ͘
    

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16. ਺ࣜԽ
    B౳ڑ཭
    Cฒߦ
    D౳଎౓
    

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17. γΣʔμʔͷίʔυ
    LFSOFMWPJENPWF ʜ
    GPS VJOUJJOPEF$PVOUJ
    \
    ʜ
    ౳ڑ཭
    qPBUBUUSBDUJPOFYQ C EJTUBODFB
    EJTUBODFB
    
    
    qPBUSFQVMTJPOFYQ CEJTUBODFEJTUBODF
    
    E"OHMFBMQIB OFBS"OHMFBUUSBDUJPOGBS"OHMFSFQVMTJPO
    JOUFSWBM
    ฒߦ
    qPBUQBSBMMFM"OHMF%JGHFU3BOHFE"OHMF OPEFBOHMFDVSSFOU/PEFBOHMF
    
    E"OHMFCFUBQBSBMMFM"OHMF%JGFYQ CEJTUBODFEJTUBODF
    JOUFSWBM
    ౳଎౓
    qPBUOPEF7FMPDJUZTRSU OPEFWFMPDJUZ9OPEFWFMPDJUZ9OPEFWFMPDJUZ:OPEFWFMPDJUZ:
    
    WFMPDJUZHBNNB OPEF7FMPDJUZWFMPDJUZ
    FYQ CEJTUBODFEJTUBODF
    
    ^
    

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18. ߏ੒
    ʢ6**NBHF7JFXͷαϒΫϥεʣ
    7JFX$POUSPMMFSTXJGU
    .FUBM.BOBHFSTXJGU 4IBEFSNFUBM
    

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19. ࣮ԋ case1
    IUUQTZPVUVCFD"60+XNF6"
    ЋЌ—Ѝ
    

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20. ࣮ԋ case2
    IUUQTZPVUVCF(KES:&3:,7D
    ЋЌЍ
    

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21. ࣮ԋ case3
    IUUQTZPVUVCF8M.J+%[$G
    ЋЌЍ
    

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22. ύϑΥʔϚϯεʹ͍ͭͯ
    ͷݸମΛ࢖༻ɺͦΕͧΕͷ૬ޓ࡞༻Λߟ͑ͨͷͰ
    YͰճͷԋࢉΛຖϑϨʔϜ͝ͱ
    ඵؒʹճ࣮ߦ
    GQTΛΩʔϓɺ$16઎༗཰ఔ౓
    FYQؔ਺͚ͩͰສճඵʢʣ
    

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23. ·ͱΊ
    ຊ೔ͷൃද಺༰ɺৄࡉ͸2JJUBͰ
    .FUBMͰϋΠύϑΥʔϚϯεͳ(16ฒྻԋࢉ͕Մೳ
    ෳࡶͳݱ৅ΛJ1IPOF಺ʹ࠶ݱͰ͖Δ
    ਓ޻஌ೳͳͲ΁ͷԠ༻ɺظ଴େ
    IUUQRJJUBDPNZVLZ@B[
    

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24. ͯͯ͘͘ษڧձ #tekutekustudy
    ҟۀछΤϯδχΞ͕ू·Δษڧձ
    

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25. Metal Advent Calendar
    

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26. ιʔείʔυ
    HJUIVCDPNZVLJOBHB4XBSN*OUFMMJHFODF
    

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