I-Lookhead Decoding
Ukukhipha amakhodi ku-Lookhead kusheshisa ukukhiqizwa kwe-LLM ngaphandle kwanoma iyiphi imodeli yokusalungiswa eyengeziwe ngokuqagela nokuqinisekisa amathokheni amaningi esikhathi esizayo ngokuhambisana kusetshenziswa ama-n-grams imodeli ewakhiqizayo ngokuhamba kwesikhathi.
Uhlolojikelele
It breaks the strict one-token-at-a-time bottleneck.
I-Deep Dive
Okwethulwa abacwaningi e-UC Berkeley ngo-2023, ukuqoshwa kwe- lookahead kusheshisa ukuqagela kusetshenziswa imodeli eqondiwe ngokwayo - ayikho imodeli yesibili futhi akukho kuqeqeshwa okusizayo. Ihlela kabusha isizukulwane njengokuxazulula isistimu yezibalo ezingaqondile kusetshenziswa indlela ehambisanayo ebizwa ngokuthi i-Jacobi iteration. Esinyathelweni ngasinye imodeli isebenzisa amagatsha amabili ngesikhathi esisodwa: igatsha 'lokubheka' elihluza ukuqagela kwezikhundla ezimbalwa zamathokheni esikhathi esizayo ngokuhambisana, kanye negatsha 'lokuqinisekisa' elihlola ama-n-gram athembisayo wamathokheni amaningi aqoqwe echibini. Ama-n-gram aqinisekisiwe imodeli evumelana nawo azinikele ngesikhathi esisodwa, ngakho-ke amathokheni amaningi angamukelwa ngesinyathelo ngasinye. Ngenxa yokuthi incike kuphela ekudluleleni phambili kwemodeli, okukhiphayo kuhlala kuyilokho kanye ukuqoshwa okuhahayo noma okuyisampula okungakhiqiza, kuyilapho kunciphisa inani lezinyathelo ezilandelanayo ezidingekayo.
I-Technical Insight
Umbono oyinhloko uboleka i-Jacobi/Gauss-Seidel iphuzu elingaguquki iteration: i-autoregressive decoding ithathwa njengokuthola indawo egxilile yemephu yemodeli efasiteleni lamathokheni esikhathi esizayo. Ukuqagela okuhambisanayo kulungiswa ngokuphindaphindiwe, futhi i-n-gram pool igcina ukulandelana kwamathokheni okubonakalayo okubonwa phakathi nalokhu kuphindaphinda. Ukuqinisekisa kuqinisekisa ukuthi noma iyiphi i-n-gram efakwe kunqolobane ifana nokuphumayo okulandelayo kwemodeli, okuvumela amathokheni amaningana ukuthi aqhubekele phambili ngephasi eyodwa ngaphandle kwenethiwekhi ehlukile yokusalungiswa.
I-Strategic Impact
Isivinini nesikali
Ukugeleza komsebenzi wolimi kungahamba ngokushesha ngaphandle kokudela ukuvumelana.
Finyelela futhi ufinyelele
Yandisa ukufinyelela kuzo zonke izilimi nezitayela zokuxhumana.
Izinqumo ezicacile
Amaqembu angachitha isikhathi esiningi ekwahluleleni kuyilapho i-automation isingatha impinda.
Ikusasa Lokuqoshwa Kwe-Lookhead
Ukukhipha amakhodi okubheka phambili kuyathandeka ngoba akudingi imodeli eyengeziwe ukuqeqesha, ukuphakela, noma ukugcina enkumbulweni - ukunciphisa ukutholwa kwabasingathi. Lindela ukuhlanganiswa kuzinhlaka ezinikezayo ezengeziwe nezinhlanganisela nokuqagela okuqagelayo kanye nokulungiselelwa kwe-KV-cache. Ucwaningo lulungisa osayizi bamafasitela kanye nokuphathwa kwephuli ye-n-gram yemithwalo yemisebenzi ehlukene, kanye nokuhlola ukuthi isu likala kanjani ngomongo obude kanye nokusetshenziswa okuhlanganisiwe lapho ikhompuyutha ye-GPU ingasetshenziswa kancane.
Ukuqaliswa Komhlaba Wangempela
Ukuzibamba ngokwakho imodeli evulekile efana ne-Llama noma i-Vicuna ene-latency esheshayo ngaphandle kokuqeqeshwa noma ukulayisha noma iyiphi imodeli eyisizayo yokusalungiswa.
Ukunciphisa inani lezinyathelo zokukhipha amakhodi ezilandelanayo zokukhiqiza uhlobo olude njengezindatshana noma ikhodi, lapho ama-flop amaningi kodwa izinyathelo ziyibhodlela.
Ukuhlanganiswa kumalabhulali we-inference (ukukhishwa kwangempela kuthumele ukuqaliswa okuhambisana ne-FlashAttention) ukuze kukhuliswe ukuphuma kuma-GPU akhona.
Ukusheshisa ukusetshenziswa kwenqwaba ku-hardware engasetshenziswa kancane ngokuhweba ikhompuyutha eyengeziwe ehambisanayo ukuze uthole amamodeli ambalwa alandelanayo okudlula.
Izingozi & Guardrails
Amaqiniso akhonjiwe angafaka ngokuthula imibiko, ukugeleza kosekelo, noma imiphumela yocwaningo.
Ukuzwela okusheshayo kungadala imiphumela engahambisani kuzo zonke izicelo ezifanayo.
Idatha yombhalo ebucayi ingase idalulwe uma izilawuli zokufinyelela zibuthakathaka.
Ukuqalisa Umhlahlandlela
Chaza ifomethi yokuphumayo, ithoni, namazinga wekhwalithi ngaphambi kokukhishwa.
Izimpendulo eziyisisekelo ngemithombo ethembekile noma nini lapho ukunemba kubalulekile.
Gcina indawo yokuhlola isibuyekezo somuntu ukuze uthole imiphumela ephezulu.
Landela amaphethini okuhluleka futhi uqeqeshe kabusha imiyalo noma ukuhamba komsebenzi njalo.
Qhubeka Uhlole
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Umhlahlandlela olandelayo
I-Skeleton-of-Candler Parallel Decoding
Imibuzo evame ukubuzwa
What is Lookahead Decoding?
Ukukhipha amakhodi ku-Lookhead kusheshisa ukukhiqizwa kwe-LLM ngaphandle kwanoma iyiphi imodeli yokusalungiswa eyengeziwe ngokuqagela nokuqinisekisa amathokheni amaningi esikhathi esizayo ngokuhambisana kusetshenziswa ama-n-grams imodeli ewakhiqizayo ngokuhamba kwesikhathi. Yephula umthetho oqinile wethokheni eyodwa-ngesikhathi.
Yini ehlukanisa ukuqoshwa kwe- lookahead kusukela ekubhalweni okujwayelekile kokuqagela?
Ukukhishwa kwekhodi kwe-Lookahead kusheshisa ukukhiqiza kusetshenziswa amaphasi emodeli okuqondiwe wona uqobo, ngaphandle kwenethiwekhi yokusalungiswa yokusiza.
Iyiphi indlela yezinombolo esekela ukuqoshwa kwe- lookahead?
Ihlela kabusha ukuqoshwa kwe-autoregressive njengohlelo olungaqondile oluxazululwe ngesitayela sika-Jacobi sokuphindaphinda iphuzu elingaguquki phezu kwamathokheni azayo.
Imaphi amagatsha amabili ahambisanayo agijima esinyathelweni ngasinye?
Igatsha elibheka phambili lihluza ukuqagela kwezikhundla zesikhathi esizayo kuyilapho igatsha lokuqinisekisa lihlola ikhandidethi elingu-n-grams ukusuka endaweni yokubhukuda.
Yini egcinwe ku-'n-gram pool'?
I-pool igcina inqolobane yama-n-grams akhiqizwa ngesikhathi sokuphindaphinda ukuze aqinisekiswe futhi akwazi ukuzinikela esinyathelweni esizayo.
Ingabe ukukhishwa kwamakhodi okubheka phambili kuyithinta kanjani ikhwalithi yokuphumayo uma kuqhathaniswa nokuqoshwa okuvamile?
Ngenxa yokuthi kusetshenziswa amaphasi emodeli eqondiwe kuphela futhi aqinisekiswa, umphumela ufana nokuthi ukukhishwa kwamakhodi okujwayelekile kungakhiqiza ini.