Overview
Sequence parallelism inopatsanura imwechete yakareba yekuisa kutevedzana kune akawanda maGPU pamwe nechiratidzo (nguva) dimension, uye Ring Attention inobvumira iwo maGPU kuverengera kunyatsotarisisa nekupfuura kiyi / kukosha mabhuroko kutenderedza mhete. Pamwe chete vanogadzira miriyoni-chiratidzo mamiriro windows zvinogoneka pasina chero GPU imwe chete inobata iyo yese kutevedzana.
Sequence Parallelism uye Ring Attention chivakwa chehunyanzvi chinobata mhando yemhando, mutengo wezvivakwa, latency, uye kuvimbika pachiyero.
Deep Dive
Kutarisisa kwakajairwa kunoda muvhunzo wega wega kuti uone kiyi yega yega / kukosha, saka iyo activation memory inokura nehurefu hwekutevedzana uye iyo K/V izere inofanirwa kuwanikwa. Sequence parallelism inoshatisa kutevedzana kuitira kuti GPU yega yega ive ine contiguous chunk yematokens (nemibvunzo yavo, makiyi, kukosha). Ring Attention yobva yaronga maGPU mumhete ine musoro: mudziyo wega wega unochengeta mivhunzo yemunharaunda yakagadziriswa nepo K/V zvidhinha zvichipfuudzwa hop-by-hop kutenderedza mhete. Sezvo chivharo chega chega chinosvika, iyo GPU inoverengera kutarisisa uye inounganidza mibairo uchishandisa online-softmax (iyo yakafanana inomhanya max/sum trick seFlashAttention). Mushure mekuzara kwakazara, kubvunza kwese kwakanangana nemakiyi ese chaizvo, pasina GPU yakambochengeta K/V yese. Zvine hutsinye, iyo K/V kutaurirana inopindirana nekombuta, saka inowedzera mudiki-wachi mutengo.
Technical Insight
Mhete Attention inotsamira pa online softmax: kutarisisa kunogona kuverengerwa block-by-block uku uchichengeta inomhanya uye inomhanya normalizer, wozodzoreredza mari dzepakutanga kana kukosha kwakakura kuchioneka. Izvi zvinoita kuti mhedzisiro yemasvomhu ifanane nekutarisa kuzere. Mhete inopfuura chete K/V tensor (saizi zvikero nebhuroko, kwete kutevedzana kwakazara), uye nekuti kutaurirana kwega kwega hop kunopindirana neiyo yapfuura block's matmul, bandwidth - kwete ndangariro - inova iyo inomisa chinhu.
Mastering Sequence Parallelism uye Ring Attention
Sequence parallelism inopatsanura imwechete yakareba yekuisa kutevedzana kune akawanda maGPU pamwe nechiratidzo (nguva) dimension, uye Ring Attention inobvumira iwo maGPU kuverengera kunyatsotarisisa nekupfuura kiyi / kukosha mabhuroko kutenderedza mhete. Pamwe chete vanogadzira miriyoni-chiratidzo mamiriro windows zvinogoneka pasina chero GPU imwe chete inobata iyo yese kutevedzana. Sequence Parallelism uye Ring Attention chivakwa chehunyanzvi chinobata mhando yemhando, mutengo wezvivakwa, latency, uye kuvimbika pachiyero. Kuvaka kunzwisisa kwakadzama, bata Sequence Parallelism uye Ring Attention semuenzaniso wekushandisa, kwete chinhu chimwe chete: tsanangura zvinodiwa, kujekesa fungidziro, uye patsanura zvinogona kuitwa nehurongwa hwakavimbika kubva kune zvichiri kuda kutonga kwenyanzvi.
Mukuita, zvikwata zvakasimba zvinoshandisa Sequence Parallelism uye Ring Attention inogonesa zvivakwa, data, uye sarudzo dzezvivakwa zvinopesana nekuvimbika uye mutengo. Ivo vanonyora zvakajeka maitiro ebudiriro, bvunzo vachipokana ne data rechokwadi uye mafambiro ebasa, uye iterate zvichibva pane zvakacherechedzwa maitiro ekutadza kwete kuhwina-nguva imwe chete yebhenji. Apa ndipo apo kunzwisisa kwe theoretical kunoshanduka kuve kugona kwakasimba pane chigadzirwa, mutemo, uye mashandiro.
Zvisarudzo zvezvivakwa zvinotyaira kuita uye mutengo wekushandisa kwemakore. Panguva imwecheteyo, Kukwirisa imwe bhenji kunogona kuvanza yakafara system kushaya simba. Nzira yakatsiga ndeyekubatanidza kukurumidza kuyedza nekutonga: mhanyisa vatyairi vendege, tora humbowo, buritsa matanda esarudzo, uye urambe uchivandudza chengetedzo semaitiro emuenzaniso, zvinotarisirwa nemushandisi, uye zvinodikanwa zvekutonga.
Strategic Impact
Zvisarudzo zvezvivakwa zvinotyaira kuita uye mutengo wekushandisa kwemakore.
Zvisarudzo zvezvivakwa zvinotyaira kuita uye mutengo wekushandisa kwemakore. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Dzidzo yehunyanzvi inobatsira zvikwata kusarudza murwi wakakodzera, kwete iwo mutsva chete.
Dzidzo yehunyanzvi inobatsira zvikwata kusarudza murwi wakakodzera, kwete iwo mutsva chete. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Sarudzo dzeinjiniya dziri nani dzinoderedza zviitiko zvekuvimbika mukugadzira.
Sarudzo dzeinjiniya dziri nani dzinoderedza zviitiko zvekuvimbika mukugadzira. Mukutumirwa kwemhando yepamusoro, izvi zvinoshandurirwa kuita mitemo inoyerwa yekushanda, miganhu yevaridzi, uye tsika dzekudzokorora dzinodzokororwa kuitira kuti zvikwata zvikwire kuvimba pane kukwidza kusajeka.
Real-World Implementation
Kudzidzira 1M-chiratidzo chinyorwa LLM nekugovanisa kutevedzana kwega kwega kuyambuka 8 GPUs neRing Attention.
Megatron-LM's sequence parallelism inoderedza activation ndangariro muLayerNorm uye kudonha matunhu.
Kugadzira bhuku rose kana hombe kodhi repository mune imwe yekupfuura pass pasina kuderedzwa
Kubatanidza Kutarisa kweRing uye tensor parallelism kuti ikwane yekupedzisira-yakareba-mamiriro ekutaura pane akawanda-GPU node.
Maitiro Ekuita
Sequence Parallelism uye Ring Attention mukuita
Kudzidzira 1M-chiratidzo chinyorwa LLM nekugovanisa kutevedzana kwega kwega kuyambuka 8 GPUs neRing Attention.
Kudzidzira 1M-chiratidzo chinyorwa LLM nekugovanisa kutevedzana kwega kwega kuyambuka 8 maGPU ane Ring Attention Matimu anowanzo kuwana mhedzisiro iri nani kana vatsanangura hunhu hwepamberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa uye mutengo wekukanganisa nekufamba kwenguva.
Sequence Parallelism uye Ring Attention mukuita
Megatron-LM's sequence parallelism inoderedza activation ndangariro muLayerNorm uye kudonha matunhu.
Megatron-LM's sequence parallelism inoderedza activation memory muLayerNorm uye matunhu ekudonha Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi ekumucheto, uye kuteedzera zvese zvakawanikwa zvechigadzirwa uye mutengo wekukanganisa nekufamba kwenguva.
Sequence Parallelism uye Ring Attention mukuita
Kugadzira bhuku rose kana hombe kodhi repository mune imwe yekupfuura pass pasina kuderedzwa.
Kugadzira bhuku rose kana hombe kodhi repository mune imwe yekumberi pass pasina truncation Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi ekumucheto, uye kuteedzera zvese zvakawanikwa zvechigadzirwa uye mutengo wekukanganisa nekufamba kwenguva.
Sequence Parallelism uye Ring Attention mukuita
Kubatanidza Kutarisa kweRing uye tensor parallelism kuti ikwane yekupedzisira-yakareba-mamiriro ekutaura pane akawanda-GPU node.
Kubatanidza Ring Attention ne tensor parallelism kuti ikwane ultra-refu-context inference pane akawanda-GPU node Matimu anowanzo kuwana mhedzisiro iri nani kana achinge atsanangura emhando yepamusoro kumberi, chengetedza nzira yekukwira kwevanhu yemakesi emupendero, uye kuteedzera zvese zvakawanikwa zvechigadzirwa uye kukanganisa mutengo nekufamba kwenguva.
Njodzi & Guardrails
Kugadzirisa imwe bhenji kunogona kuvanza yakafara system kushaya simba.
Infrastructure uye mari yekugadzirisa inowanzotarisirwa pasi.
Chengetedzo uye kucherechedzwa mapundu anogona kukura sezvo masisitimu anowedzera kuoma.
Implementation Roadmap
Tsanangura latency, mhando, uye mutengo zvinangwa usati waitwa.
Tsanangura latency, mhando, uye mutengo zvinangwa usati waitwa. Bata nhanho yega yega segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gaka, uye wobva wawedzera kushandiswa.
Benchmark pasi pechokwadi mutoro uye data mamiriro.
Benchmark pasi pechokwadi mutoro uye data mamiriro. Bata nhanho yega yega segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gaka, uye wobva wawedzera kushandiswa.
Chishandiso chekutarisa zvikanganiso, kudonha, uye mushandisi maitiro.
Chishandiso chekutarisa zvikanganiso, kudonha, uye mushandisi maitiro. Bata nhanho yega yega segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gaka, uye wobva wawedzera kushandiswa.
Gadzirira nzira dzekudzosera kumashure uye dzezviitiko usati wawedzera.
Gadzirira nzira dzekudzosera kumashure uye dzezviitiko usati wawedzera. Bata nhanho yega yega segedhi rehumbowo: kana maitiro asina kusangana, imbomira kuburitsa, vhara gaka, uye wobva wawedzera kushandiswa.