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GUIDE teknik
GPTQ ak AWQ ñaari pexe yu gëna am solo lañu ngir wàññi modeli làkk yiñ tàggat ba noppi ñu am 4-bit ci njub, suko defee ñu mëna dox ci hardware bu gëna ndaw te yomb njëg.
Déglul tegtal biiIA-nettali · ~2 min
They are why you can run a capable model on a single consumer GPU instead of a datacenter rack.
Quantisation post-training (PTQ) dafay kompresse model bi jeex te duñu ko tàggataat, di karte poid yu am précision bu yéeg ba 4 bits ngir xaaj mémoire bi. Jafe-jafe bi mooy def lii te doo yàq njubte gi. GPTQ (muy setal OBQ) dafay xayma poid yi couche par couche, di jëfandikoo ay leeral ci ñaareelu rang ci benn done bu ndaw ngir méngale poid yi des ak ngir kompensaasioŋ njuumte bu nekk ci rounding. AWQ (Activation-aware Weight Quantization) jël na beneen wàll: dafay seetlu ni paccum chaine yu ndaw yi dañu am solo lool, ñu xamme ko ci xool magnitudes activation, ba noppi aar chaine yu am solo yooyu ci scaling moo gën leen quantize aggressivement. Ñoom ñaar ñépp ñu ngi may model yu melni Llama ñu dox ci 4-bit, jumtukaay yu melni vLLM, llama.cpp, ak AutoGPTQ def leen ñu gëna am solo ci wàllu dëkk ak njëg yu baax.
Doxal benn xeetu Llama bu am 70 milyaar ci benn GPU bu 24 GB di jëfandikoo 4-bit GPTQ.
Modèle yiñ xayma ci AWQ dañu am produit bu bari ci vLLM ngir API yu am njariñ.
llama.cpp di jëfandikoo poids GGUF yuñ xayma ngir doxal modeli làkk yi ci CPU ordinatër portable.
Bibliothèque AutoGPTQ ak AutoAWQ yu Hugging Face dañuy may developpeur yi ñu xayma limu model biñ yebbi ci ay ligne kode yu néew.
Kantite dafay puus ci suufu 4 bit ci 3-bit, 2-bit, ak xeetu njubte bu jaxaso, di faral di boole ak sparsity. Xaarandi lëkkaloo bu gëna jege ak motër yiy liggéey suko defee kantite, kompresioŋ KV-cache, ak dekodaas speculatif bokk liggéey. Jàppale hardware ngir formaa yu ndaw yu melni NVFP4 ak MXFP4 mingi màgg, te jumtukaayi otomatik dina ñu gëna tànn yaatuwaayu bit bu nekk. Mébet bu mag bi mooy 4-bit (ak lu gëna ndaw) bu amul benn perte, moo tax model yu dëgër yi yomb ngir liggéey fépp.
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GPTQ ak AWQ ñaari pexe yu gëna am solo lañu ngir wàññi modeli làkk yiñ tàggat ba noppi ñu am 4-bit ci njub, suko defee ñu mëna dox ci hardware bu gëna ndaw te yomb njëg. Moo tax nga mëna doxal model bu mëna liggéey ci benn GPU konsomatër ci barabu rack datacenter.
Quantisation ginaaw tàggat yaram dafay wàññi njubte gi ci diisaayu model bi jeex (lu melni, ba 4 bit) te doo tàggataat ko ci noonu rek.
GPTQ dafay jëfandikoo ab Hessian bu jege ngir xam naka la benn poid di amee ci perte bi, ba noppi mu defar poid yi des ngir kompensaasioŋ.
AWQ dafay xàmmee chaine de poids salient ci jëfandikoo magnitudes de activation ba noppi aar leen ci scaling, ndax chaine yu néew dañu am solo lool.
Dema demee ci 16 bits dem ci 4 bits ci poids bu nekk dafay wàññi mémoire poids ci lu tollu ci benn ci ñatti pàcc yi, lu tollu ci 4x wàññiku.
Poid yi ñooy njëgu mémoire bi gëna mag, waaye activation yi ñoo gëna sensible ci ñàkka am precision, kon quantisation poid bi kese mooy barab bi gëna neex.
Weyal di jàng
Tann nañu yeneen njiit ngir topic bii
Ci bi mu melGis bi ci topp
Fonction yu am njeexital ngir joxe done ci tàggat yaram
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