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Flash Attention dzizizi ɖe TPU dzi kple Mɔ Sesẽa Srɔ̃

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15 min read Via archerzhang.me

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Flash ƒe susu dzizizi ɖe TPU dzi kple Mɔ Sesẽa Srɔ̃

Nu nyuitɔ kekeake yometiti nye siren hadzidzi na mɔ̃ɖaŋudɔwɔlawo. Menye viɖe siwo dzina ɖe edzi koe wòdo ŋugbe o, ke boŋ dzidzɔ si anɔ eme ne èbɔbɔ xɔtunuwo ɖe wò lɔlɔ̃nu nu. Nye odyssey nyitsɔ laa be mazi Flash Attention ƒe dɔwɔwɔ deŋgɔ aɖe dzi—si wowɔ na NVIDIA GPUwo—ɖe Google TPU dzi la tso nu lédziname sia tututu me. Taɖodzinua nye bubume: woawɔ nutsotso vevi aɖe ƒe mɔ̃ aɖe kabakaba. Gake mɔzɔzɔa nye aɖaŋu sesẽ siwo ku ɖe modular system design ŋu me. Enye ŋutinya si te gbe ɖe nusita mɔ̃wo abe Mewayz ene, siwo xɔa mɔ̃ɖaŋununya ƒe vovototodedeameme eye wokpɔa wo dzi la, le vevie na asitsatsa ƒe dɔwɔna siwo li tegbee dzi.

Siren Ha si nye Peak Performance

Flash Attention nye tɔtrɔ gã aɖe ƒe mɔnu si naa Transformer ƒe kpɔɖeŋuwo kabakaba ŋutɔ to ŋkuɖodzinu ƒe mɔɖeɖe nyuie me. Le GPU siwo wowɔe na la, enye akunyawɔwɔ dzadzɛ. Míaƒe dɔwɔnu vevitɔ, si nye nuŋlɔɖiwo ŋuti dɔwɔwɔ ƒe mɔ̃, ɖoa ŋu ɖe mɔ̃ siawo ŋu vevie. Esi wokpɔ xexlẽdzesi siwo wotsɔ sɔ kple wo nɔewo la, edze abe sɔsɔŋuɖoɖoa le bɔbɔe ene: Flash Attention + míaƒe TPU quota = dɔwɔwɔ kabakaba wu kple gazazã siwo bɔbɔ wu. Mege ɖe eme, kakaɖedzi nɔ asinye be ne mewɔ asitɔtrɔ le nu ŋu le mɔ si bɔbɔ nu wòsɔ gbɔ—mewɔ avu kple kernel ƒe ɖoɖowo, ŋkuɖodzinu ƒe teƒewo, kple XLA ƒe nuƒoƒoƒula—la, mate ŋu ana peg sia si le dzogoe ene me la nasɔ ɖe do goglo si ƒe nɔnɔme le abe tensor ene me. Mɔ̃ɖaŋununya dzi ɖuɖu ɖeɖeko ŋue woƒe susu nɔ gbã, ke menye ɖoɖoa ƒe dzi ƒe tsotso ɣeyiɣi didi o.

Nu Sesẽ Siwo Womekpɔna O ƒe Ƒutsotsoe

"Dzidzedzekpɔkpɔ" gbãtɔ nye ahamumu. Le kwasiɖa geɖe megbe la, mekpɔ kpɔɖeŋu aɖe si maƒu du. Gake aʋadziɖuɖua me mekɔ o. Hack la te ŋu gblẽna bɔbɔe, eye wògbãna le agbalẽdzraɖoƒea ƒe tɔtrɔ sue ɖesiaɖe me. Nusi gavloe wue nye be ena hehe si womekpɔna o va pɔmpi bliboa dzi. TPU ƒe kɔdamɔ si wowɔ ɖe ɖoɖo nu la va zu silo, si zi mía dzi be míalé deployment scripts vovovowo, ŋkuléle ɖe hooks, kple data-loading logic gɔ̃ hã ŋu. Nusi woɖo be wòanye module si wowɔ wònyo wu la va zu aɖaka yibɔ si megbãna o. Míeto kpododonu siwo me vevesese le me:

    ƒe nyawo
  • Debugging Hell: Dɔwɔnu siwo wozãna tsɔ wɔa nɔnɔmetatawoe la gbã ŋku na míaƒe kernel si wowɔ ɖe ɖoɖo nu, si wɔe be dɔwɔwɔ ƒe megbededewo nye drɔ̃e baɖa aɖe be woakpɔ.
  • Team Bottleneck: Nye ɖeka koe se labyrinthine code la gɔme, si tɔa te ŋgɔyiyi ne nyemeli o.
  • Ðekawɔwɔ ƒe Fe: Womete ŋu tsɔ ŋgɔyiyi siwo wowɔ le dzigbe gome le kpɔɖeŋu vevitɔa me yi míaƒe frankenstein TPU fork la gbɔ bɔbɔe o.
  • Gazazã ƒe Dzidziɖedzi: Ŋkuɖodzinu ɣaɣla aɖe ƒe sisi le TPU dzi, si wodzi tso míaƒe ŋkuɖodzinu dzikpɔkpɔ si mebɔ o me, na gazazã ƒe dzidziɖedzi 40% va yi ɣeaɖeɣi hafi míelée.
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Modular Susu: Ðekawɔwɔ ɖe Ŋusẽ-Dzidzedzekpɔkpɔ Dzi

Nusɔsrɔ̃ vevitɔa meku ɖe TPUwo alo susu ƒe akɔntabubuwo ŋu o. Eku ɖe modularity ŋu. Míeda gɔmeɖose vevi aɖe dzi kpɔ: ele be woate ŋu atrɔ ɖoɖo aɖe ƒe akpa aɖewo eye woate ŋu awɔ dɔ ɖekae, ke menye be woatsɔ ga aƒo wo nu ƒu o. To akpa aɖe si menye afimatɔ o dzizizi ɖe míaƒe ƒuƒoƒoa me la, míetsɔ liƒo, eme kɔ, kple ablaɖeɖe sa vɔe ɖe nususugblɔ ƒe dɔwɔwɔ ƒe kɔkɔƒe si ƒã hafi wokpɔna le ewɔwɔ me ta. Afi siae xexemenunya si nye modular business OS abe Mewayz ene va zua nu vevi aɖe le. Menye ɖe Mewayz nye be wòaxe wò ɖe ƒuƒoƒo ɖeka me o; eƒo nu tso orchestration layer si ana nàzã dɔwɔnu nyuitɔ kekeake na dɔa nana ŋu—eɖanye GPU-koŋ ƒe nyonyome alo TPU-dzɔdzɔme ƒe kpɔɖeŋu o—evɔ mahiã be wò ŋutɔ nàtu kadodoŋusẽa ahalé be nɛ o.

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"Nu nyuitɔ kekeake si dzia ɖoɖowɔɖi ƒe sesẽ ɖe edzi zi geɖe nyea etsɔme mɔ̃ɖaŋununya ƒe fe si woɣla abe ŋgɔyiyi ene ko. Dɔwɔwɔ nyuie vavãtɔ tsoa ŋgɔdonya dzadzɛwo kple akpa siwo woate ŋu aɖɔli gbɔ, ke menye kalẽwɔwɔ ƒe ƒoƒo ɖekae zi ɖeka o."

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Nusɔsrɔ̃ kple Trɔtrɔ yi Duƒuƒu si Li Eteƒe Didi

Míetsɔ Flash Attention dodokpɔ si wozi ɖe edzi la da ɖe agbalẽdzraɖoƒe mlɔeba. Ke boŋ míetrɔ ɖe TPU-dzitɔwo ƒe susu ƒe dɔwɔwɔ ŋu si, togbɔ be le nukpɔsusu nu la, ewɔa blewu le pepa dzi hã la, eɖee fia be kakaɖedzi le eŋu wu sã eye woate ŋu alé be nɛ. Le nyateƒe me la, ɖoɖoa ƒe dɔwɔwɔ bliboa nyo ɖe edzi le eƒe liƒo ta. Vevietɔ wu la, míedze míaƒe AI dɔwɔnawo ƒe xɔtuɖaŋu gɔme abe modules siwo woɖe ɖe vovo, siwo woɖe nyuie ene. Tamebubu ƒe tɔtrɔ sia—si nye nubabla dzadzɛ siwo le akpa vovovoawo dome tsɔtsɔ ɖo nɔƒe gbãtɔ wu dɔwɔwɔ xoxo, si wowɔna le nutoa me—ye nye nusi tututu na asitsalawo te ŋu dzidzea nu le nunya me. Le xexe si me xɔtunu siwo le tɔtrɔm kabakaba le me la, mɔ̃ si le abe Mewayz ene naa ɖoɖo si dzi woato atsɔ ŋutete yeyewo ade eme evɔ womagbugbɔ tasiaɖamfɔa atu o, alo le mía gome la, evɔ womadze agbagba agbugbɔ ato mɔ̃a vɛ o. Mɔ sesẽa fia mí be duƒuƒu si li tegbee menye aʋa sue ɖesiaɖe dzi ɖuɖu o, ke boŋ be nàkpɔ egbɔ be wò aʋakɔ bliboa ate ŋu azɔ le ɖekawɔwɔ me.

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Nyabiase Siwo Wobiana Enuenu

Flash ƒe susu dzizizi ɖe TPU dzi kple Mɔ Sesẽa Srɔ̃

Nu nyuitɔ kekeake yometiti nye siren hadzidzi na mɔ̃ɖaŋudɔwɔlawo. Menye viɖe siwo dzina ɖe edzi koe wòdo ŋugbe o, ke boŋ dzidzɔ si anɔ eme ne èbɔbɔ xɔtunuwo ɖe wò lɔlɔ̃nu nu. Nye odyssey nyitsɔ laa be mazi Flash Attention ƒe dɔwɔwɔ deŋgɔ aɖe dzi—si wowɔ na NVIDIA GPUwo—ɖe Google TPU dzi la tso nu lédziname sia tututu me. Taɖodzinua nye bubume: woawɔ nutsotso vevi aɖe ƒe mɔ̃ aɖe kabakaba. Gake mɔzɔzɔa nye aɖaŋu sesẽ siwo ku ɖe modular system design ŋu me. Enye ŋutinya si te gbe ɖe nusita mɔ̃wo abe Mewayz ene, siwo xɔa mɔ̃ɖaŋununya ƒe vovototodedeameme eye wokpɔa wo dzi la, le vevie na asitsatsa ƒe dɔwɔna siwo li tegbee dzi.

Siren Ha si nye Peak Performance

Flash Attention nye tɔtrɔ gã aɖe ƒe mɔnu si naa Transformer ƒe kpɔɖeŋuwo kabakaba ŋutɔ to ŋkuɖodzinu ƒe mɔɖeɖe nyuie me. Le GPU siwo wowɔe na la, enye akunyawɔwɔ dzadzɛ. Míaƒe dɔwɔnu vevitɔ, si nye nuŋlɔɖiwo ŋuti dɔwɔwɔ ƒe mɔ̃, ɖoa ŋu ɖe mɔ̃ siawo ŋu vevie. Esi wokpɔ xexlẽdzesi siwo wotsɔ sɔ kple wo nɔewo la, edze abe sɔsɔŋuɖoɖoa le bɔbɔe ene: Flash Attention + míaƒe TPU quota = dɔwɔwɔ kabakaba wu kple gazazã siwo bɔbɔ wu. Mege ɖe eme, kakaɖedzi nɔ asinye be ne mewɔ asitɔtrɔ le nu ŋu le mɔ si bɔbɔ nu wòsɔ gbɔ—mewɔ avu kple kernel ƒe ɖoɖowo, ŋkuɖodzinu ƒe teƒewo, kple XLA ƒe nuƒoƒoƒula—la, mate ŋu ana peg sia si le dzogoe ene me la nasɔ ɖe do goglo si ƒe nɔnɔme le abe tensor ene me. Mɔ̃ɖaŋununya dzi ɖuɖu ɖeɖeko ŋue woƒe susu nɔ gbã, ke menye ɖoɖoa ƒe dzi ƒe tsotso ɣeyiɣi didi o.

Nu Sesẽ Siwo Womekpɔna O ƒe Ƒutsotsoe

"Dzidzedzekpɔkpɔ" gbãtɔ nye ahamumu. Le kwasiɖa geɖe megbe la, mekpɔ kpɔɖeŋu aɖe si maƒu du. Gake aʋadziɖuɖua me mekɔ o. Hack la te ŋu gblẽna bɔbɔe, eye wògbãna le agbalẽdzraɖoƒea ƒe tɔtrɔ sue ɖesiaɖe me. Nusi gavloe wue nye be ena hehe si womekpɔna o va pɔmpi bliboa dzi. TPU ƒe kɔdamɔ si wowɔ ɖe ɖoɖo nu la va zu silo, si zi mía dzi be míalé deployment scripts vovovowo, ŋkuléle ɖe hooks, kple data-loading logic gɔ̃ hã ŋu. Nusi woɖo be wòanye module si wowɔ wònyo wu la va zu aɖaka yibɔ si megbãna o. Míeto kpododonu siwo me vevesese le me:

Modular Susu: Ðekawɔwɔ ɖe Ŋusẽ-Dzidzedzekpɔkpɔ Dzi

Nusɔsrɔ̃ vevitɔa meku ɖe TPUwo alo susu ƒe akɔntabubuwo ŋu o. Eku ɖe modularity ŋu. Míeda gɔmeɖose vevi aɖe dzi kpɔ: ele be woate ŋu atrɔ ɖoɖo aɖe ƒe akpa aɖewo eye woate ŋu awɔ dɔ ɖekae, ke menye be woatsɔ ga aƒo wo nu ƒu o. To akpa aɖe si menye afimatɔ o dzizizi ɖe míaƒe ƒuƒoƒoa me la, míetsɔ liƒo, eme kɔ, kple ablaɖeɖe sa vɔe ɖe nususugblɔ ƒe dɔwɔwɔ ƒe kɔkɔƒe si ƒã hafi wokpɔna le ewɔwɔ me ta. Afi siae xexemenunya si nye modular business OS abe Mewayz ene va zua nu vevi aɖe le. Menye ɖe Mewayz nye be wòaxe wò ɖe ƒuƒoƒo ɖeka me o; eƒo nu tso orchestration layer si ana nàzã dɔwɔnu nyuitɔ kekeake na dɔa nana ŋu—eɖanye GPU-koŋ ƒe nyonyome alo TPU-dzɔdzɔme ƒe kpɔɖeŋu o—evɔ mahiã be wò ŋutɔ nàtu kadodoŋusẽa ahalé be nɛ o.

Nusɔsrɔ̃ kple Trɔtrɔ yi Duƒuƒu si Li Eteƒe Didi

Míetsɔ Flash Attention dodokpɔ si wozi ɖe edzi la da ɖe agbalẽdzraɖoƒe mlɔeba. Ke boŋ míetrɔ ɖe TPU-dzitɔwo ƒe susu ƒe dɔwɔwɔ ŋu si, togbɔ be le nukpɔsusu nu la, ewɔa blewu le pepa dzi hã la, eɖee fia be kakaɖedzi le eŋu wu sã eye woate ŋu alé be nɛ. Le nyateƒe me la, ɖoɖoa ƒe dɔwɔwɔ bliboa nyo ɖe edzi le eƒe liƒo ta. Vevietɔ wu la, míedze míaƒe AI dɔwɔnawo ƒe xɔtuɖaŋu gɔme abe modules siwo woɖe ɖe vovo, siwo woɖe nyuie ene. Tamebubu ƒe tɔtrɔ sia—si nye nubabla dzadzɛ siwo le akpa vovovoawo dome tsɔtsɔ ɖo nɔƒe gbãtɔ wu dɔwɔwɔ xoxo, si wowɔna le nutoa me—ye nye nusi tututu na asitsalawo te ŋu dzidzea nu le nunya me. Le xexe si me xɔtunu siwo le tɔtrɔm kabakaba le me la, mɔ̃ si le abe Mewayz ene naa ɖoɖo si dzi woato atsɔ ŋutete yeyewo ade eme evɔ womagbugbɔ tasiaɖamfɔa atu o, alo le mía gome la, evɔ womadze agbagba agbugbɔ ato mɔ̃a vɛ o. Mɔ sesẽa fia mí be duƒuƒu si li tegbee menye aʋa sue ɖesiaɖe dzi ɖuɖu o, ke boŋ be nàkpɔ egbɔ be wò aʋakɔ bliboa ate ŋu azɔ le ɖekawɔwɔ me.

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