InfiniBand hamwe na RDMA
InfiniBand ni umuvuduko mwinshi, wihuta cyane uhuza seriveri na GPU mumasoko ya AI, kandi RDMA ireka imashini imwe igasoma cyangwa ikandika ububiko bwibindi bitarimo CPU.
Incamake
Together they are the plumbing that keeps thousands of GPUs fed with data during large-model training.
Kwibira cyane
Iyo uhuguye icyitegererezo mubihumbi bya GPU, umuyoboro akenshi uba icyuho, ntabwo ari chip. InfiniBand nigitambara cyahinduwe kigamije kubwibi: gitanga umurongo uhuza umurongo wa gigabits amagana kumasegonda (NDR ikora 400 Gb / s) hamwe nubukererwe bwa microsecond. Amayeri yingenzi ni Remote Direct Memory Access (RDMA), yimura amakuru hagati yububiko bwa node ebyiri, ikarenga imikorere ya sisitemu yimikorere na kopi ya CPU itinda TCP / IP isanzwe. Iyi 'kernel bypass' irekura CPU inzinguzingo kandi igabanya ubukererwe. InfiniBand itanga kandi ibyuma bigenzura ibyuma bitagira igihombo, kandi Quantum ya NVIDIA yongeyeho na adaptX ya ConnectX yiganje muri mudasobwa zidasanzwe za AI. RoCE (RDMA hejuru ya Ethernet ihinduwe) izana inyungu zisa na RDMA kumurongo wa Ethernet.
Ubushishozi
RDMA ikora ikoresheje inshinga n'imirongo ibiri. Porogaramu isaba akazi gusaba kohereza no kwakira umurongo; umuyoboro wumuyoboro (HCA) urabisoma kandi wohereza amakuru muburyo bwanditse mbere, byanditseho uturere twibutse kumurongo wa kure. Kuberako NIC ikora ihererekanyabubasha mu byuma kandi intangiriro ya OS yararenganye, hariho kopi yamakuru ya zeru kandi nta paki imwe ya CPU ihagarika kwimurwa ryinshi. InfiniBand ihuza-layer yinguzanyo ishingiye kugenzura igenzura irinda buffer kurengerwa, bigatuma umwenda utagira igihombo nta retransmission serwakira.
Ingaruka z'Ingamba
Igiciro na bije
Ibyemezo byubwubatsi bitwara imikorere nigiciro cyimikorere kumyaka.
Ibyemezo bisobanutse
Ubuhanga bwa tekinike bufasha amakipe guhitamo umurongo ukwiye, ntabwo ari shyashya gusa.
Kugenzura ubuziranenge
Guhitamo neza bya injeniyeri bigabanya ibintu byizewe mubikorwa.
Ejo hazaza ha InfiniBand na RDMA
Umuyoboro mugari ukomeza kuzamuka: XDR InfiniBand igamije 800 Gb / s kuri buri murongo, hamwe namashusho agana kuri 1.6 Tb / s. Irushanwa riragenda ryiyongera nkuko Ultra Ethernet Consortium ishushanya Ethernet ihuye na InfiniBand kubikorwa bya AI, kandi nkuko biri muri neti ya comptabilite (SHARP) ikuramo imibare rusange muri sisitemu ubwabo. Tegereza gukomera kwa GPU-kuri-neti, guhuza optique kugirango ugabanye ingufu, hamwe nigitambara cyapimwe kugeza kumatsinda yibihumbi magana yihuta uko imipaka ikura.
Gushyira mu bikorwa Isi
Guhuza ibihumbi bya GPU muri supercomputer ya AI kuburyo amakuru ya gradient agenda hagati yumutwe muri microseconds mugihe cyamahugurwa yatanzwe
Kureka seriveri imwe igasoma ububiko bwibindi (RDMA) kugirango yihutishe sisitemu ya dosiye ikwirakwizwa na data base idafite CPU hejuru
Gukoresha NCCL byose-bigabanya ibikorwa hejuru ya InfiniBand kugirango uhuze uburemere bwikitegererezo murwego rwa GPU
Koresha RoCE kugirango uzane RDMA-yuburyo buke-bwihuta bwimurwa kuri Ethernet data-center ya rezo
Ingaruka & Kurinda
Gutezimbere igipimo kimwe gishobora guhisha intege nke za sisitemu.
Ibikorwa Remezo no kubungabunga akenshi usanga bidahabwa agaciro.
Icyuho cyumutekano no kwitegereza birashobora kwiyongera uko sisitemu igenda igorana.
Igishushanyo mbonera
Sobanura ubukererwe, ubuziranenge, nigiciro cyibiciro mbere yo kubishyira mubikorwa.
Ibipimo byerekana umutwaro ufatika hamwe namakuru yimiterere.
Gukurikirana ibikoresho kubikosa, drift, ningaruka zabakoresha.
Tegura inzira yo gusubiza ibyabaye mbere yo gupima.
Komeza Ubushakashatsi
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Ubuyobozi bukurikira
Imiyoboro yubuhanga iranga hamwe na Data verisiyo
Ibibazo bikunze kubazwa
What is InfiniBand and RDMA Networking?
InfiniBand ni umuvuduko mwinshi, wihuta cyane uhuza seriveri na GPU mumasoko ya AI, kandi RDMA ireka imashini imwe igasoma cyangwa ikandika ububiko bwibindi bitarimo CPU. Hamwe na hamwe ni pompe ituma ibihumbi bya GPU bigaburirwa namakuru mugihe cy'amahugurwa manini-manini.
Niki RDMA yemerera mubyukuri mudasobwa imwe gukora?
Remote Direct Memory Access yimura amakuru neza hagati yububiko bwa node ebyiri, ukarenga kernel ya OS na kopi ya CPU, igabanya ubukererwe kandi ikarekura CPU.
Kuki InfiniBand igera kubukererwe buke ugereranije na TCP / IP isanzwe?
InfiniBand adapteri ihererekanya amakuru kuri / kuva mububiko bwibikoresho byuma hanyuma ukarenga intangiriro ya OS, ukuraho buri paki CPU ihagarika hamwe na kopi yamakuru.
Hafi ya buri murongo uhuza umurongo NDR InfiniBand itanga?
NDR.
Muri RDMA, 'umurongo uteganijwe' ukoreshwa iki?
Gusaba kohereza akazi gusaba kohereza no kwakira umurongo (umurongo umwe); umuyoboro wumuyoboro adapteri arabasoma kandi akora transfert yibuka.
RoCE ni iki?
RoCE isobanura RDMA hejuru ya Ethernet ihujwe, yemerera gutinda-kwihuta, kernel-bypass ihererekanya kumyenda isanzwe ya Ethernet aho kuba InfiniBand kavukire.