FlashAttention
FlashAttention ndeyekuyeuka-inoshanda algorithm iyo inokokorodza kutarisisa kwakafanana seyakajairwa shanduri asi isina kumbonyora hofori yekutarisisa matrix kuti inonoke GPU ndangariro.
Pfupiso
It made long-context training and inference dramatically faster and cheaper.
Kudzika Kwakadzika
Kutarisisa kwakajairwa kunoverengera zvibodzwa zvema tokeni ese, kugadzira N-by-N matrix. Kune zviuru zvina-zviratidzo zvakatevedzana izvo mamirioni gumi nematanhatu zvibodzwa, uye matrix anofanira kunyorerwa uye kuverenga kumashure kubva kuGPU's high-bandwidth memory (HBM). Kuti ndangariro traffic, kwete masvomhu, ndiyo bhodhoro chairo. FlashAttention, yakaunzwa naTri Dao uye vaanoshanda navo muna 2022, inogadzirisa komputa kuitira kuti matrix isambonyatso kugadzirwa. Iyo inogadzirisa kutevedzana mumataira anoenderana neGPU diki, yekupedzisira-inokurumidza pa-chip SRAM, computing softmax inowedzera sezvainoenda. Mhedzisiro yacho yakafanana nemasvomhu netarisiro yakajairwa asi inoshandisa ndangariro shoma uye inomhanya kakawanda nekukurumidza, ichigonesa kurebesa mamiriro windows.
Technical Insight
Iwo manomano ndiyo 'online softmax' yakasanganiswa nekuisa matairi. FlashAttention inoremedza zvidhinha zvidiki zvemibvunzo, makiyi, uye makoshero muSRAM, inokokorodza zvishoma kutarisisa zvinobuda, uye rescales inomhanya sums sezvivharo zvitsva zvinosvika kuitira kuti softmax normalization igare yakarurama pasina kuona zvibodzwa zvese kamwechete. Nekuti haimbo chengetedza yakazara N-ne-N matrix muHBM, ndangariro zviyero zvine mutsetse kwete quadratically, uye kernel inosanganisirwa kuita imwechete GPU mashandiro kudzikisa kunonoka kurangarira kuverenga nekunyora.
Strategic Impact
Kumhanya uye chiyero
Mutauro workflows inogona kufamba nekukurumidza pasina kupira kuenderana.
Svika uye svika
Inopamhidzira kupinda mumitauro yese nemataera ekutaurirana.
Sarudzo dzakajeka
Zvikwata zvinogona kupedza nguva yakawanda pakutonga uku otomatiki ichibata kudzokorora.
Ramangwana reFlashAttention
FlashAttention yave chivakwa chekuvaka. FlashAttention-2 yakagadziridzwa GPU basa kupatsanura, uye FlashAttention-3 inoshandisa nyowani Hopper hardware maficha seasynchrony uye yakaderera-chaiyo FP8. Tarisira kuenderera mberi dhizaini nemachipisi, kusanganisa kwakadzika mumaseva ekufungidzira kwemagwaro marefu, uye akasiyana akarongedzerwa sparse kana kutsvedza-hwindo kutarisa. Sezvo mahwindo emamiriro ekunze anosundidzira kumamiriyoni ematokeni, IO-inoziva kernels seizvi zvinoramba zvakakosha kuti uchengetedze kudzidziswa uye kusevha mari inogoneka.
Real-World Implementation
Kudzidzira mhando dzemitauro mikuru seLlama uye GPT-maitiro masisitimu nekukurumidza uye nemutengo wakaderera weGPU
Kushandira kwenguva refu-chinyorwa vabatsiri vanopinza mabhuku ese kana macodebase pasina kupera mundangariro
Kumhanyisa magwaro-pfupiso mapaipi ayo anogadzirisa makumi ezviuru zvezviratidzo panguva imwe chete
Simba rekuona uye multimodal transformers uko marefu akateedzana ezvigamba zvemufananidzo anoita kuti kutarisa kudhure
Njodzi & Guardrails
Chokwadi chehuroyi chinogona kupinda chinyararire mishumo, kuyerera kwetsigiro, kana tsvakiridzo.
Kunzwa nekukasira kunogona kugadzira mhedzisiro isingaenderane pane zvikumbiro zvakafanana.
Sensitive text data inogona kuburitswa kana zvidhiraivho zvisina kusimba.
Implementation Roadmap
Tsanangura chimiro chekubuda, toni, uye mhando zviyero usati waburitsa.
Mhinduro dzepasi neakavimbika masosi pese pazvine basa.
Chengetedza ongororo yekuongorora yemunhu kune yakakwira-stake zvinobuda.
Tevera maitiro ekutadza uye dzidzisazve kukurudzira kana mafambiro ebasa nguva nenguva.
Ramba Uchiongorora
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What is FlashAttention?
FlashAttention ndeyekuyeuka-inoshanda algorithm iyo inokokorodza kutarisisa kwakafanana seyakajairwa shanduri asi isina kumbonyora hofori yekutarisisa matrix kuti inonoke GPU ndangariro. Yakagadzira kudzidziswa kwenguva refu uye kufungidzira nekukurumidza uye zvakachipa.
Chii chikuru bhodhoro FlashAttention tarisiro mukutarisisa kwakajairwa?
Kutarisisa kwakajairwa kwakasungwa mundangariro: kuvhara iyo hombe N-by-N matrix kuenda uye kubva kumusoro-bandwidth memory inotonga nguva, kwete arithmetic pachayo.
Kubuda kweFlashAttention kunofananidzwa sei nekutarisisa kwakajairwa?
FlashAttention inosanganisa iyo chaiyo yekutarisisa kukosha; inongorongedzazve komputa kuti isaite matrix akazara.
Ndeipi ndangariro yeGPU iyo FlashAttention inoshandisa nekugadzirisa data mumataira?
FlashAttention inotakura mataira madiki muGPU's inokurumidza pa-chip SRAM, ichichengeta basa rinorema padyo nemakomputa zvikamu.
Ndeipi nzira inobvumira FlashAttention kuverengera softmax pasina kuona zvibodzwa zvese kamwechete?
Iyo yepamhepo softmax inochengetedza kumhanya maximum uye sums, kudzoreredza mhedzisiro mhedzisiro sezvo mataira matsva asvika saka iyo yekupedzisira normalization ndeyechokwadi.
Chii chakaitwa neFlashAttention-3 kunyanya kutora mukana?
FlashAttention-3 yakagadzirwa pamwe chete neazvino Hopper GPUs, ichishandisa asynchronous execution uye yakaderera-chaiyo FP8 yekumwe kukurumidza.