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Isbarbardhigga Tensor-ka ee Modelyada Waaweyn
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Marka moodalku aad u weyn yahay oo aanu ku habboonayn hal GPU, isbarbardhigga moodeelka iyo dhuumaha ayaa u kala qaybiya moodalka laftiisa aaladaha oo dhan.
Dhageyso hagahanAI-waa laga sheekeeyay · ~2 min
This is what makes training giant language models with hundreds of billions of parameters physically possible.
Isbarbardhigga moodeelku waxa uu u qaybiyaa hal nooc oo guud ahaan GPU-yo badan sidaa darteed hal qalab uma baahna inuu hayo dhammaan miisaannada. Waxaa jira laba dhadhan oo waaweyn. Tensor (intra-lakab) isbarbar yaacaya xisaabta gudaha lakabka, sida gooynta isku-dhufashada matrixka weyn ee GPU-yada oo mid walba uu xisaabiyo qayb ka mid ah wax soo saarka. Dhuumaha (lakab-lakab) isbarbardhigga waxay u qoondeeyaan lakabyo kala duwan oo isku xigta GPU-yo kala duwan, sidaas darteed lakabka xannibaya 1 wuxuu ku nool yahay GPU 0, xannibaadda 2 ee GPU 1, iyo wixii la mid ah, iyada oo waxqabadyada loo sii gudbiyay sida xariiqda kulanka. Caqabada leh dhuumaha naive-ka ah waa 'xumbada': halka GPU 0 uu ka shaqeeyo dufcaddii ugu horreysay, GPU-yada hoose waxay fadhiyaan shaqo-la'aan. Dhuumaha tuubooyinka waxay qayb kasta u kala qaybisaa qaybo yaryar si dhammaan marxaladaha ay mashquul u noqdaan, iyagoo si weyn u horumarinaya isticmaalka.
Tababarka moodooyinka qaabka GPT ee NVIDIA Megatron-LM, kaas oo kala qaybiya dareenka lakabka beddelka kasta iyo matris-hormarinta guud ahaan GPU-yada iyada oo loo marayo isbarbardhigga tensor-ka.
Isticmaalka GPipe si aad u dhigto lakabyo kala duwan oo aragti weyn ama qaab luqadeed dardargeliyayaal kala duwan halka batch yar-yar ay ka dhigayso mashquul.
Matoorka dhuumaha ee DeepSpeed wuxuu u qaybiyaa moodel-boqolaal bilyan oo cabbirro ah oo u kala qaybinaya qaybo badan.
Isku-dubbaridka tensor-ka gudaha hal-serfer 8-GPU ah oo leh isbarbar-dhigga dhuumaha dhuumaha oo dhan server-yo badan si loo tababaro moodal aad ugu weyn hal mashiin.
Qaab-dhismeedyadu waxay si isa soo taraysa u otomaatigeeyaan dhibaatada adag ee go'aaminta sida loo qaybiyo moodalka aaladaha oo dhan, iyadoo la isticmaalayo xog-ururin iyo raadin si loo miisaamo xisaabinta iyo isgaarsiinta. Filo is dhexgalka adag ee tensor, dhuumaha, iyo isbarbardhigga xogta (isbarbardhigga 3D), jadwalka dufcada yar ee ka caqli badan si ay ugu dhawaadaan baabi'inta xumbooyinka dhuumaha, iyo qalabka leh isku xirnaanta degdega ah si loo kala qaybiyo hal lakab oo jajab ah ayaa noqda mid raqiis ah oo joogto ah moodooyinka weligood weyn.
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Marka moodalku aad u weyn yahay oo aanu ku habboonayn hal GPU, isbarbardhigga moodeelka iyo dhuumaha ayaa u kala qaybiya moodalka laftiisa aaladaha oo dhan. Tani waa waxa ka dhigaya tababarida moodooyinka luqadaha waaweyn ee leh boqollaal balaayiin cabirro jir ahaan suurtogal ah.
Moodeelka iyo dhuumaha isbarbar-dhigga ayaa u kala qaybiya qaabka laftiisa dhammaan aaladaha, taas oo awood u siinaysa tababbarka shabakadaha oo aad uga weyn mid kasta oo GPU qaban karo.
Isbarbardhigga Tensor-ku wuxuu u qaybiyaa xisaabinta hal lakab, tusaale ahaan kala qaybinta matrix miisaan weyn si GPU kastaa u xisaabiyo qayb ka mid ah wax soo saarka.
Horraantii tallaabada dhuumaha, heerarka hoose weli wax tallo ah ma lahan oo iska fadhiistaan, luminaya waqtiga GPU; farqiga shaqo la'aanta ah waxaa loo yaqaan xumbo.
Qaybinta dufcad-yar-yar waxay u oggolaanaysaa dufcooyin-yar-yar oo badan inay isku mar qabsadaan heerar kala duwan, iyadoo lagu mashquulinayo dhammaan GPU-yada oo yaraanaya wakhtiga aan shaqayn.
Isbarbardhigga Tensor-ku wuxuu si joogto ah ula xiriiraa inuu dib isugu keeno natiijooyinka shaxanka qayb ahaan, sidaas darteed waxaa la dhigayaa meesha ugu sarreysa ee isku-xirnaanta isku-xirnaanta ee ugu sarreysa, gudaha noodka ka sarreeya NVLink.
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Isbarbardhigga Tensor-ka ee Modelyada Waaweyn
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