Model ak paralelismu tuyo
Sudee benn model dafa yaatu lool ba mënu ci nekk ci benn GPU, model bi ak parallelism pipeline bi dañuy xaaj model bi ci boppam ci aparey yi.
Résumé
This is what makes training giant language models with hundreds of billions of parameters physically possible.
Plongeur bu xóot
Model parallelism dafay xaaj benn model ci GPU yu bari suko defee benn aparey soxlawul tëye diisaay yépp. Amna ñaari cafka yu mag. Parallelism tensor (ci biir couche) dafay xaaj math bi ci biir benn couche, lu ci melni dagg matrix bu rëy ci GPU yi nga xamni bu nekk ci ñoom dafay xayma wàll wi génne. Parallelism pipeline (diggante couche) dafay jox ay couche yu wuute yu toppalante ci GPU yu wuute, kon couche block 1 dafay dundu ci GPU 0, block 2 ci GPU 1, ak ñoom seen, ak aktivasioŋ yu ñuy romb ci kanam ni ligne montage. Jafe-jafe bi ci pipelining naïf mooy 'bubble' bi: bi GPU 0 di liggéey ci batch bu njëkk bi, GPU yi ci suuf dañuy toog. Pipelining dafay xaaj lote bu nekk ci ay micro-lote suko defee etape yépp nekk ci liggéey, gëna baaxal jëfandikoo gi.
Gis-gis xarala
Paralelism tensor (ni ci NVIDIA Megatron-LM) dafay xaaj matris yu diis yi ci kolon wala ci ligne, ba noppi jëfandikoo wàññi-lepp ngir boolewaat ay resultaa yu xaaj, di tëye jokkoo bi ci biir benn node NVLink bu gaaw. Paralelismu gasoduc (GPipe, PipeDream) dafay xaaj lote bi ci ay micro-lote yuy jaar ci ay etape ci ay jamono yu wuute, di wàññi diiru 'bubble' bi amul benn liggéey. Ñaari mbir yooyu dañuy faral di boole, am paralelism tensor ci biir benn node ak paralelism pipeline ci biir node yi.
njeextalu pexe
Njëgg ak budget
Dogal yi architecture di jël dañuy indi njariñ ak njëgu liggéey bi ay at ci ginaaw.
dogal yu gëna leer
Njàngalem xarala yi dafay jàppale ekip yi ñu tànn li gën, te baña yam ci li gëna bees daal.
Xool kalite
Tanneef yu gëna baax ci wàllu ingeñër dina wàññi jafe-jafe yi ci wàllu wóor ci liggéey bi.
Ëlëgu model ak paralelismu gasoduc
Kadre yi dañuy gëna otomatise jafe-jafe bu metti bi di jël dogal ci ni ñuy xaajalee ab model ci ay aparey, jëfandikoo profilage ak seetlu ngir yemale ordinatër ak jokkoo. Xaarandi boole tensor, pipeline, ak parallelism done (parallelism 3D), micro-batch bu gëna xarañ ngir daanaka dindi bubbles pipeline, ak aparey yu am lëkkaloo yu gëna gaaw suko defee xaaj benn layer ci puce yi gëna xéewale ak model bu gëna bari ay mbir ba fàww.
Doxal ci àdduna dëgg
Taggat xeetu GPT ak NVIDIA Megatron-LM, biy xaaj bépp couche transformateur ak matris feed-forward ci GPU yi jaaraleko ci paralelism tensor.
Jëfandikoo GPipe ngir def ay couche yu wuute ci gis-gis bu mag wala modelu làkk ci gaawaay yu wuute ci jamono ji micro-batching di leen tëye.
Motëru pipeline bu DeepSpeed dafay xaaj xeetu parametre yu bari yu am téemeeri milyaar ci ay etape ci node yu bari.
Njaxas paralelism tensor ci biir benn serwër 8-GPU ak paralelism pipeline buy jaar ci serwër yu bari ngir tàggat model bu rëy lool ci benn masin.
Risk yi ak balustrade yi
Optimize benn benchmark mën na nëbb ñakk kattan yu gëna yaatu ci sistem bi.
Njëg li ñuy fay ci infrastructure yi ak ci toppatoo dañuy faral di suufeel.
Bu sistem yi di gëna xawa jafee xam, jafe-jafe yi am ci wàllu kaaraange ak seetlu mën nañu gëna bari.
Roadmap ngir samp gi
Mandargal latency, kalite, ak njëg yi laata ngay jëfandikoo.
Benchmark ci biir sargal ak done yu dëggu.
Jumtukaay bi di saytu njuumte yi, derive bi ak njeextalu jëfandikukat bi.
Waajal rollback ak yooni tontu ci jafe-jafe yi laata ngay eskale.
Weyal di banneexu
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Gis bi ci topp
paralelism tensor ngir model yu mag
Laaj yi ñuy faral di laaj
What is Model and Pipeline Parallelism?
Sudee benn model dafa yaatu lool ba mënu ci nekk ci benn GPU, model bi ak parallelism pipeline bi dañuy xaaj model bi ci boppam ci aparey yi. Loolu moo tax ñu mëna tàggat modeli làkk yu mag yu am téemeeri milyaari parametre ci wàllu yaram.
Ban jafe-jafe bu am solo la paralelism model ak pipeline di saafara?
Model ak parallelism pipeline dañuy xaaj model bi ci boppam ci aparey yi, loolu mooy tax ñu mëna tàggat reso yu gëna mag te benn GPU mënu ko tëye.
naka la ko paralelism tensor (ci biir couche) di doxee?
Parallelism tensor dafay xaaj calcul bi ci benn layer, ci misaal xaaj matrix bu yaatu suko defee GPU bu nekk xayma benn wàll ci génne gi.
Luy 'bubble' bi ci paralelismu gasoduc bu xamul dara?
Bu njëkk ci jéego pipeline, etape yi ci suuf amul benn dugal ba leegi te dañu toog rek, di yàq jotu GPU bi; bërëb bu amul benn liggéey lañuy woowe bubble.
naka lay def ba paralelism ci gasoduc yi wàññi bubble bi?
Séddale benn batch ci ay micro-batch dafay may micro-batch yu bari ñu jël ay etape yu wuute benn yoon, loolu mooy tax GPU yépp nekk ci liggéey ba noppi di wàññi diiru inactif bi.
Lan moo waral ñuy denc paralelism tensor ci benn node?
Parallelism tensor dafay jokkoo lu bari ngir boolewaat ay resultaa matrix yu xaaj, moo tax ñu koy def ci barab bi bandwidth bi gëna rëy, ci biir benn node ci kaw NVLink.