Ukufudukela kwiziko leenkcukacha kwi-DDR5 kunokubaluleka ngakumbi kunolunye uhlaziyo.Nangona kunjalo, abantu abaninzi bacinga nje ngokungacacanga ukuba i-DDR5 yinguqulelo nje yokuthatha indawo ye-DDR4 ngokupheleleyo.Iiprosesa ngokuqinisekileyo zitshintsha ngokufika kwe-DDR5, kwaye ziya kuba nezintshainkumbuloujongano, njengoko kwakunjalo kwizizukulwana zangaphambili zophuculo lwe-DRAM ukusuka kwi-SDRAM ukuyaI-DDR4.
Nangona kunjalo, i-DDR5 ayisiyonto nje yokutshintsha ujongano, itshintsha ingqikelelo yenkqubo yememori yeprosesa.Ngapha koko, utshintsho kwi-DDR5 lunokwanela ukuthethelela ukuphuculwa kweqonga leseva elihambelanayo.
Kutheni ukhetha ujongano lwenkumbulo entsha?
Iingxaki zeKhompyutha ziye zanzima ngakumbi ukusukela ekufikeni kweekhompyuter, kwaye oku kukhula okungenakuphepheka kuye kwaqhuba indaleko ngohlobo lwamanani amakhulu eeseva, inkumbulo ehlala ikhula kunye namandla okugcina, kunye nezantya zewotshi ephezulu kunye nokubala okuphambili, kodwa ikwaqhuba utshintsho lwezakhiwo. , kubandakanywa ukwamkelwa kwamva nje kocalucalulo kunye nokuphunyezwa kweendlela ze-AI.
Abanye banokucinga ukuba zonke ezi ziyenzeka kwi-tandem kuba onke amanani ayenyuka.Nangona kunjalo, ngelixa inani le-processor cores liye landa, i-DDR bandwidth ayigcinanga isantya, ngoko ke i-bandwidth nge-core iye yancipha.
Ekubeni iiseti zedatha ziye zanda, ngakumbi kwi-HPC, imidlalo, ikhowudi yevidiyo, ukucinga ngomatshini, uhlalutyo olukhulu lwedatha, kunye nogcino-lwazi, nangona i-bandwidth yokudluliselwa kwememori inokuphuculwa ngokudibanisa iziteshi ezininzi zeememori kwi-CPU, kodwa oku kudla amandla amaninzi. .Ubalo lwephini lomqhubekekisi lukwanciphisa ukuzinza kwale ndlela, kwaye inani lamatshaneli alinakunyuka ngonaphakade.
Ezinye izicelo, ngokukodwa ii-subsystems ezisezantsi ezifana ne-GPUs kunye neeprosesa ezikhethekileyo ze-AI, zisebenzisa uhlobo lwememori ye-bandwidth ephezulu (HBM).Itekhnoloji iqhuba idatha ukusuka kwiitshiphusi ze-DRAM ezipakishweyo ukuya kwiprosesa ngokusebenzisa iindlela zememori ze-1024-bit, iyenza ibe sisisombululo esihle kwizicelo ezigcina inkumbulo njenge-AI.Kwezi zicelo, iprosesa kunye nememori kufuneka zisondele kangangoko ukubonelela ngodluliselo olukhawulezayo.Nangona kunjalo, iyabiza kakhulu, kwaye iitshiphusi azikwazi kungena kwiimodyuli ezinokuthathelwa indawo / eziphuculweyo.
Kwaye imemori ye-DDR5, eyaqala ukuhanjiswa ngokubanzi kulo nyaka, yenzelwe ukuphucula i-bandwidth yetshaneli phakathi kweprosesa kunye nememori, ngelixa ixhasa ukuphuculwa.
I-Bandwidth kunye ne-latency
Izinga lokudluliselwa kwe-DDR5 likhawuleza kunaso nasiphi na isizukulwana sangaphambili se-DDR, ngokwenene, xa kuthelekiswa ne-DDR4, izinga lokudluliselwa kwe-DDR5 lingaphezulu kabini.I-DDR5 yazisa utshintsho olongezelelweyo loyilo ukuze usebenze kula mazinga odluliselo ngaphezulu kweenzuzo ezilula kwaye iya kuphucula ukusebenza kakuhle kwebhasi yedatha.
Ukongezelela, ubude obuqhekezayo buphindwe kabini ukusuka kwi-BL8 ukuya kwi-BL16, ivumela imodyuli nganye ukuba ibe namatshaneli amabini azimeleyo kwaye ngokubalulekileyo iphindwe kabini amajelo akhoyo kwinkqubo.Awufumani kuphela isantya esiphezulu sokudlulisa, kodwa ufumana isitishi sememori esakhiwe ngokutsha esigqwesa i-DDR4 nangaphandle kwamazinga aphezulu okudlulisela.
Iinkqubo ezinzulu kwimemori ziya kubona ukonyuswa okukhulu ukusuka kwinguqu ukuya kwi-DDR5, kwaye uninzi lwedatha enzima kakhulu yanamhlanje, ngakumbi i-AI, i-database, kunye nokusetyenzwa kwe-intanethi (OLTP), ihambelana nale nkcazo.
Izinga losulelo nalo libaluleke kakhulu.Uluhlu lwesantya lwangoku lwememori ye-DDR5 yi-4800 ~ 6400MT/s.Njengoko iteknoloji ikhula, izinga losulelo kulindeleke ukuba libe phezulu.
Ukusetyenziswa kwamandla
I-DDR5 isebenzisa amandla ombane asezantsi kune-DDR4, okt 1.1V endaweni ye-1.2V.Ngelixa umahluko we-8% ungavakali ngathi mninzi, umahluko uye ubonakale xa ziphindwe ukubala umlinganiselo wokusetyenziswa kwamandla, okt 1.1²/1.2² = 85%, nto leyo ethetha ukongiwa kwe-15% kumatyala ombane.
Utshintsho lwezakhiwo eziveliswe yi-DDR5 zikhulisa ukusebenza kakuhle kwe-bandwidth kunye namazinga aphezulu okudluliselwa, nangona kunjalo, la manani anzima ukulinganisa ngaphandle kokulinganisa indawo echanekileyo yesicelo apho iteknoloji isetyenziswa khona.Kodwa kwakhona, ngenxa yokuphuculwa koyilo lwezakhiwo kunye namazinga aphezulu okudluliselwa, umsebenzisi wokugqibela uya kubona ukuphucuka kwamandla ngentwana yedatha.
Ukongeza, imodyuli ye-DIMM inokuhlengahlengisa i-voltage ngokwayo, enokunciphisa imfuno yohlengahlengiso lonikezelo lwamandla ebhodi ye-motherboard, ngaloo ndlela ibonelela ngeziphumo ezongezelelweyo zokonga amandla.
Kumaziko eenkcukacha, ubungakanani bamandla asetyenziswa ngumncedisi kunye nokuba zingakanani iindleko zokupholisa ezixhalabisayo, kwaye xa ezi zinto ziqwalaselwa, i-DDR5 njengemodyuli eyonga amandla ngakumbi inokuba sisizathu sokuphucula.
Ulungiso lwempazamo
I-DDR5 ikwabandakanya ukulungiswa kwempazamo kwi-chip, kwaye njengoko iinkqubo ze-DRAM ziqhubeka nokuncipha, abasebenzisi abaninzi banenkxalabo malunga nokunyusa izinga lempazamo ye-bit enye kunye nokuthembeka kwedatha iyonke.
Kwizicelo zeseva, kwi-chip ECC ilungisa iimpazamo zesuntswana elinye ngexesha lemiyalelo yokufunda phambi kokukhupha idatha kwiDDR5.Oku kukhupha umthwalo we-ECC kwi-algorithm yokulungiswa kwenkqubo ukuya kwi-DRAM ukunciphisa umthwalo kwinkqubo.
I-DDR5 yazisa kwakhona ukujonga iimpazamo kunye nokucoca, kwaye ukuba yenziwe, izixhobo ze-DRAM ziyakufunda idatha yangaphakathi kwaye zibhale idatha elungisiweyo.
Shwankathela
Ngelixa i-interface ye-DRAM iqhele ukuba ayiyonto yokuqala iziko ledatha eliqwalaselayo xa liphunyezwa ukuphuculwa, i-DDR5 ifanelwe ukujongwa ngokusondeleyo, njengoko itekhnoloji ithembisa ukonga amandla ngelixa iphucula kakhulu ukusebenza.
I-DDR5 yitekhnoloji eyenza ukuba incede abamkeli bangaphambili ukuba bafudukele ngokunembeko kwiziko ledatha elinokudityaniswa, elinokwehla lekamva.I-IT kunye neenkokheli zoshishino kufuneka zivavanye i-DDR5 kwaye zibone ukuba zifuduka njani kwaye nini ukusuka kwi-DDR4 ukuya kwi-DDR5 ukugqiba izicwangciso zazo zokuguqulwa kweziko ledatha.
Ixesha lokuposa: Dec-15-2022
