Cov tsheb khiav cov ntaub ntawv nyob rau hauv cov chaw zov me nyuam cov ntaub ntawv thiab cov kev pabcuam uas lawv txhawb tau loj hlob sai. Vim li no, muaj kev nce qib loj heev hauv cov khoom lag luam. Hloov Tomahawk 4 nyuam qhuav mus txog 25.6 megabits ib ob. Transceiver technology tsis ntev los no ntau dua 400 gigabytes.
Thaum 2021, kwv yees 95 feem pua ntawm tag nrho cov ntaub ntawv chaw tsheb yuav los ntawm huab, thiab hauv huab thov, feem ntau pob ntawv nyob hauv qab 500 bytes. Raws li cov loj dua me, koj xav tau hloov sai dua kom phim. Hmoov tsis zoo, lub network tseem tawm tsam nrog latency.
Raws li cov ntaub ntawv chaw nruab nrab nthuav dav, cov ntawv ntim hluav taws xob hauv kev siv" tus Tsov tus tw ntev," feem ntau pua pua ntawm milliseconds lossis ntau dua, ob peb xaj ntawm qhov ntau dua siab dua tus nqi nruab nrab. Hauv ntau cov ntsiab lus, qhov siab tos lub sijhawm rau 1 ntawm 100 cov neeg siv tsis yog teeb meem hauv lub sijhawm li niaj hnub, tab sis nws dhau los ua teeb meem tiag tiag thaum 1% ntawm cov neeg siv ua ntau txhiab.
PULSE architecture uas nyuam qhuav tawm tshiab muaj cov kev daws teeb meem tshiab. Lub kho qhov rooj sib txuas ntawm lub tshuab hluav taws xob tau tswj hwm los ntawm cov tshuab xa khoom sib cais tau tsim tawm. Thaum ua qauv ntawm MATLAB, lub tsev tsim qauv muaj qhov ncua sij hawm nruab nrab ntawm 1 microsecond thiab tus Tsov tus tw ncua txog 5 microseconds. Thaum kho cov nyiaj siv ua haujlwm sab nraud raug suav, nws cov kev nkag tau yog ib qho staggering 25.6 petabytes ib pliag, txawm tias qhov nrawm ntawm-rau-ntawm qhov txwv ntawm 100Gbps.
Qhov no yog ua los ntawm qee cov haujlwm tseem ceeb ntawm lub network. Ib lub hnub qub txuas piv txwv li tau siv, uas tso cai rau lub teeb mus ncig sib npaug ntawm txhua qhov chaw nres nkoj mus rau txhua lwm cov chaw sib txuas. Txhua qhov khib muaj 64 nodes, tag nrho ntawm 64 racks, thiab txhua lub node muaj ntau lub transceivers los pab txhawb subnet. Txhua transceiver txuas nws cov ntshav txuas rau ib qho subnet sib txawv ntawm lub hnub qub sib txawv.
Thaum lub sij hawm cov ntaub ntawv xa mus, lub transmitter thiab txais tau raug kaw rau tib lub sijhawm ntawm qhov thiab yoj yoj. Yog li ntawd, rau txhua lub coupler, muaj qhov sib txuam ntawm lub luag haujlwm hauv tib qho kev sib tw txhawm rau txhawm rau ua qhov chaw-phiaj ntaus khub. Ib qho ntxiv, kev thov xa mus rau tus neeg teem sijhawm ntau zaus ua ntej (lub sijhawm ncig mus los). Lub tswv yim txhim kho cov teeb meem ua tshiab laij ib txoj kev hloov tshiab rau txhua lub voj voog ncig. Ib qhov tseem ceeb ntawm cov qauv kos duab yog nws qhov kev xav ceev ceev nanosecond.
Vim tias qhov subnet yog ywj siab kiag li, qhov kev teeb tsa tshwj xeeb no tso cai rau rov siv lub wavelengths. Raws li qhov tshwm sim, lub network tuaj yeem txhawb ntau dua 250,000 channel. Tsis tas li ntawd, lub kaw lus tso cai 100% kev siv wavelength. Cov qauv siv no tsis tas yuav tsum muaj kev ntuas, chaw nyob, thiab hauv-kev hloov hauv.
Txawm li cas los xij, nws xav tau ceev tshaj plaws kev lim, kev teem sijhawm, cov ntaub ntawv rov qab, lub suab sib hloov hloov, thiab hloov kho. Nyob rau cov txheej txheem no, cov leeg ntshav tau tuaj yeem muab cov khoom siv tau zoo thiab txo qhov ua txhaum cai.
Ib qho ntawm qhov kev tshawb pom uas ceeb yog piv rau lub network network tam sim no, uas raug nqi kwv yees $ 5 / Gbps, nws yog qhov nqis heev. Rau lub hom phiaj no, lub network noj tsuas yog 82 picojoules ib tus neeg. Tus nqi ntawm transceivers yog poob, uas yuav muaj txiaj ntsig ntxiv rau cov tshuab ua haujlwm xws li PULSE. Ib qho ntxiv, thaum lub chaw zov me nyuam cov ntaub ntawv rov ua haujlwm, tsuas yog lub davhlau ya nyob twg ntawm qhov hloov tsheb yuav tsum tau hloov kho dua tshiab, ua rau muaj kev txuag nqi ntxiv.
