{"id":100740,"date":"2021-07-12T04:22:42","date_gmt":"2021-07-12T02:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/gotov-k-proizvodstvu-pervyj-prototip-otkrytogo-chipa-libre-soc"},"modified":"2021-07-12T04:22:42","modified_gmt":"2021-07-12T02:22:43","slug":"gotov-k-proizvodstvu-pervyj-prototip-otkrytogo-chipa-libre-soc","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/gotov-k-proizvodstvu-pervyj-prototip-otkrytogo-chipa-libre-soc","title":{"rendered":"Valmis tootmiseks avatud \u010dipi Libre-SOC esimene protot\u00fc\u00fcp.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Libre-SOC projekt, mis arendab avatud kiipi, mis on loodud h\u00fcbriidse arhidektuuri p\u00f5hjal CDC 6600 stiilis, kus CPU, VPU ja GPU instruktsioonid ei ole eraldatud ning pakutakse \u00fches ISA-s, on saavutanud esimese testproovi tootmiseks \u00fclemineku etapi. Alguses arenes projekt nimega Libre RISC-V, kuid seda nimetati Libre-SOC-iks p\u00e4rast otsust asendada RISC-V OpenPOWER 3.0 k\u00e4suarsena. <\/p>\n

Projekt on suunatud t\u00e4ielikult avatud ja litsentsitasudest vabade s\u00fcsteemide (SoC) loomisele, mida saab kasutada \u00fchel p\u00f5hjal arvutites, netbook'ides ja erinevates kaasaskantavates seadmetes. Lisaks tavalistele CPU k\u00e4sklustele ja \u00fcldkasutatavatele registritele pakub Libre-SOC protsessori \u00fches funktsionaalses plokis v\u00f5imalusi vektorite operatsioonide ja spetsialiseeritud arvutuste tegemiseks, mis on iseloomulikud VPU ja GPU-le. Kiip kasutab OpenPOWER k\u00e4suarsenali arhitektuuri, Simple-V laiendust vektorimise ja andmete paralleelse t\u00f6\u00f6tlemise k\u00e4sklustega, samuti spetsialiseeritud k\u00e4sklusi ARGB-kompleksi ja t\u00fc\u00fcpiliste 3D-operatsioonide teostamiseks. <\/p>\n

GPU juhised keskenduvad graafilise API Vulkan kasutamisele, samas kui VPU fookuses on YUV-RGB muundamise ja MPEG1\/2, MPEG4 ASP (xvid), H.264, H.265, VP8, VP9, AV1, MP3, AC3, Vorbis ja Opus formaatide dekoodeerimise kiirendamine. Mesa jaoks arendatakse avatud juhtmeid, mis kasutavad Libre-SOC-i v\u00f5imalusi, et pakkuda riistvara kiirendusega tarkvaralist teostust graafilise API Vulkan jaoks. N\u00e4iteks v\u00f5ivad Vulkan-i shaderid olla transleeritud JIT-mootori abil, et neid t\u00e4ita Libre-SOC-is kergesti k\u00e4ttesaadavate spetsialiseeritud k\u00e4skudega. <\/p>\n

J\u00e4rgmise testprotot\u00fc\u00fcbi puhul plaanitakse laiendada SVP64 (muutuva pikkusega vektoriseerimine), mis v\u00f5imaldab Libre-SOC-i kasutada vektoriprotsessorina (peale 32 64-bitiste \u00fcldotstarbeliste registrite on saadaval 128 registrit vektorkalkulatsioonide jaoks). Esimene protot\u00fc\u00fcp sisaldab ainult \u00fcht tuuma, mis t\u00f6\u00f6tab 300 MHz sagedusel, kuid kahe aasta jooksul plaanitakse v\u00e4lja anda 4-tuumaline versioon, seej\u00e4rel 8-tuumaline, ja pikaajalise eesm\u00e4rgiga ka 64-tuumaline. <\/p>\n

Esimene kiipide partii toodetakse ettev\u00f5ttes TSMC, kasutades 180nm tehnoloogiakatset. K\u00f5ik projekti arendused jagatakse vabade litsentside all, sealhulgas failid GDS-II formaadis, mis sisaldavad t\u00e4ieliku kiibi topoloogia kirjeldust, piisavat iseseisva tootmise alustamiseks. Libre-SOC saab olema esimene t\u00e4iesti s\u00f5ltumatu kiip Power arhitektuuri baasil, mille on valmistanud mitte IBM. Arenduses kasutati nMigen riistvara kirjelduse keelt (Pythonil p\u00f5hinev HDL, ilma VHDL ja Verilog'i kasutamiseta), Chips4Makers projekti FlexLib standardsete rakkude raamatukogu ning vabavara VLSI t\u00f6\u00f6riistu Coriolis2 HDL-st GDS-II-ni teisendamiseks. <\/p>\n

Libre-SOC arendamine oli rahastatud NLnet Foundationi poolt, mis eraldas 400 000 eurot t\u00e4ielikult avatud kiibi loomiseks usaldusv\u00e4\u00e4rsete ja verifitseeritavate tehniliste lahenduste arendamise programmi raames. Kiibi m\u00f5\u00f5tmed on 5.5×5.9 mm ja see sisaldab 130 000 loogilist v\u00e4ravat. Komponendid h\u00f5lmavad nelja 4KB SRAM moodulit ja 300 MHz sageduse automaatse j\u00e4lgimise bloki (PLL).

\"Valmis<\/center>
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u043e\u0435\u043a\u0442 Libre-SOC, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 \u0447\u0438\u043f \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0433\u0438\u0431\u0440\u0438\u0434\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0432 \u0441\u0442\u0438\u043b\u0435 CDC 6600, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0434\u043b\u044f \u0443\u043c\u0435\u043d\u044c\u0448\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0438 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0447\u0438\u043f\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 CPU, VPU \u0438 GPU \u043d\u0435 \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u044b \u0438 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u044b \u0432 \u043e\u0434\u043d\u043e\u043c ISA, \u0434\u043e\u0441\u0442\u0438\u0433 \u0441\u0442\u0430\u0434\u0438\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u0432 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u0442\u0435\u0441\u0442\u043e\u0432\u043e\u0433\u043e \u043e\u0431\u0440\u0430\u0437\u0446\u0430. \u0418\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u043f\u0440\u043e\u0435\u043a\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u043b\u0441\u044f \u043f\u043e\u0434 \u0438\u043c\u0435\u043d\u0435\u043c Libre RISC-V, \u043d\u043e \u0431\u044b\u043b \u043f\u0435\u0440\u0435\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d \u0432 Libre-SOC \u043f\u043e\u0441\u043b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f 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