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
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2. ࣗݾ঺հ :VLJOBHB
   "[VNB
 ʢզ࠺޾௕ʣ J04ΤϯδχΞ
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3. Metalͱ͸ʁ Φʔόʔϔουͷখ͍͞ϩʔϨϕϧͳ
   ίϯϐϡʔλάϥϑΟοΫε"1*
   0QFO(-ͱ0QFO$-ʹࣅͨػೳΛҰͭͷ"1*ʹ౷߹
4. ࠓճͷൃද಺༰ 1. ඳըॲཧ 2. ฒྻԋࢉ MetalʹΑΔ
5. GPUฒྻԋࢉͱ͸ʁ GPUͷԋࢉϦιʔεΛը૾ॲཧҎ֎ʹར༻
6. CPUͱGPUͷ࿈ܞ EFWFMPQFSBQQMFDPNNFUBM
7. Metal CPUଆͷొ৔ਓ෺ 1 .5-%FWJDF
   ୯Ұͷ(16ͷΠϯλʔϑΣΠε .FUBMؔ࿈ͷ"1*͸ଟ͕͘ϓϩτίϧͰهࡌ EFWJDF
   
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8. Metal CPUଆͷొ৔ਓ෺ 2 .5--JCSBSZ
   γΣʔμʔ΁ͷΠϯλʔϑΣΠε
   .5-'VODUJPO
   .FUBM
   4IBEJOH
   -BOHVBHFͰॻ͔Εͨؔ਺
   .5-$PNQVUF1JQFMJOF4UBUF
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   .5-$PNQVUF$PNNBOE&ODPEFS
   ίϚϯυΛ(16༻ʹΤϯίʔυ
   .5-$PNNBOE#V⒎FS
   (16Ͱ࣮ߦ͞ΕΔίϚϯυΛ֨ೲ
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   ্هͷΩϡʔɺίϚϯυͷ࣮ߦॱΛ؅ཧ .5-%FWJDF ੜ੒
9. Metal Shading Language JODMVEF
   NFUBM@TUEMJC
   VTJOH
   OBNFTQBDF
   NFUBM
   LFSOFM
   WPJE
   BEE0OF DPOTU
   EFWJDF
   qPBU
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   <<
   CV⒎FS 
   >>
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   EFWJDF
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   <<
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   >>
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   VJOU
   JE
   <<
   UISFBE@QPTJUJPO@JO@HSJE
   >>
   \
   
   
   
   
   qPBU
   SFTVMU
   
   JOQVU%BUB<JE>
   
   
   
   
   SFTVMU
   
   G
   
   
   
   
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   SFTVMU
   ^
   
10. GPU vs CPU ɾೖྗʹΛ଍ͯ͠Ҿ͘Λ܁Γฦ͢
    ɾ$16ଆͰ͸ɺ্هΛສ
    Y
    /ճ
    ɾ(16ଆͰ͸ສεϨου
    Y
    /ճ LFSOFM
    WPJE
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    <<
    CV⒎FS 
    >>
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    EFWJDF
    qPBU
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    <<
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    >>
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    VJOU
    JE
    <<
    UISFBE@QPTJUJPO@JO@HSJE
    >>
    \
    
    
    
    
    qPBU
    SFTVMU
    
    JOQVU%BUB<JE>
    
    
    
    
    GPS
    VJOU
    J
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    SFTVMU
    
    G
    
    
    
    
    
    
    
    
    SFTVMU
    
    G
    
    
    
    
    ^
    
    
    
    
    PVUQVU%BUB<JE>
    
    SFTVMU
    ^
11. CPU vs GPU ഒఔ౓
12. CPU vs GPU ʢର਺ʣ $16(16ؒͷ΍ΓͱΓΛ࠷খݶʹ͢Δ͜ͱ͕େࣄ
13. ࣮૷ํ๏ɺಛੑ͕෼͔͖ͬͯͨͱ͜ΖͰ Կ͔Ԡ༻ͯ͠ΈΑ͏ʂ
14. ܈஌ೳͱ͸ʁ ਓ޻஌ೳͷҰछɺूஂͱͯ͠ߴ౓ͳৼΔ෣͍
15. ܈Εͷ3ͭͷϧʔϧ B
    ౳ڑ཭
    ֤ݸମ͕౳ڑ཭ΛอͭΑ͏ʹಈ͘
    C
    ฒߦ
    ֤ݸମ͕ଞͷݸମͱಉ͡޲͖ʹͳΔΑ͏ʹಈ͘
    D
    ౳଎
    ֤ݸମ͸ଞͷݸମͱಉ͡଎౓ʹͳΔΑ͏ʹಈ͘
16. ਺ࣜԽ B
    ౳ڑ཭ C
    ฒߦ D
    ౳଎౓
17. γΣʔμʔͷίʔυ LFSOFM
    WPJE
    NPWF ʜ
    
    
    
    
    GPS
    VJOU
    J
    JOPEF$PVOU
    J \
    
    
    
    
    
    
    
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    FYQ C
    
    EJTUBODF
    
    B EJTUBODF
    
    B 
    
    
    
    
    
    
    
    
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    SFQVMTJPO
    
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    ฒߦ
    
    
    
    
    
    
    
    
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    ౳଎౓
    
    
    
    
    
    
    
    
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    OPEF7FMPDJUZ
    
    TRSU OPEFWFMPDJUZ9 OPEFWFMPDJUZ9
    
    OPEFWFMPDJUZ: OPEFWFMPDJUZ: 
    
    
    
    
    
    
    
    
    WFMPDJUZ
    
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    OPEF7FMPDJUZ
    
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    FYQ C
    
    EJTUBODF
    
    EJTUBODF 
    
    
    
    
    ^
18. ߏ੒ ʢ6**NBHF7JFXͷαϒΫϥεʣ 7JFX$POUSPMMFSTXJGU .FUBM.BOBHFSTXJGU 4IBEFSNFUBM
19. ࣮ԋ case1 IUUQTZPVUVCFD"60+XNF6" Ћ
    Ќ—
    Ѝ
20. ࣮ԋ case2 IUUQTZPVUVCF(KES:&3:,7D Ћ
    Ќ
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21. ࣮ԋ case3 IUUQTZPVUVCF8M.J+%[$G Ћ
    Ќ
    Ѝ
22. ύϑΥʔϚϯεʹ͍ͭͯ ͷݸମΛ࢖༻ɺͦΕͧΕͷ૬ޓ࡞༻Λߟ͑ͨͷͰ YͰճͷԋࢉΛຖϑϨʔϜ͝ͱ
    ඵؒʹճ࣮ߦ GQTΛΩʔϓɺ$16઎༗཰ఔ౓ FYQؔ਺͚ͩͰສճඵʢʣ
23. ·ͱΊ ຊ೔ͷൃද಺༰ɺৄࡉ͸2JJUBͰ .FUBMͰϋΠύϑΥʔϚϯεͳ(16ฒྻԋࢉ͕Մೳ
    ෳࡶͳݱ৅ΛJ1IPOF಺ʹ࠶ݱͰ͖Δ ਓ޻஌ೳͳͲ΁ͷԠ༻ɺظ଴େ IUUQRJJUBDPNZVLZ@B[
24. ͯͯ͘͘ษڧձ #tekutekustudy ҟۀछΤϯδχΞ͕ू·Δษڧձ
25. Metal Advent Calendar
26. ιʔείʔυ HJUIVCDPNZVLJOBHB4XBSN*OUFMMJHFODF