Machadka Farsamada Kombiyuutarka ee Akadeemiyada Sayniska ee Shiinaha ayaa soo bandhigay mashruuca XiangShan, kaas oo tan iyo 2020 uu soo saarayay processor-ka furan ee waxqabadka sare leh oo ku salaysan RISC-V edbinta hab-dhismeedka (RV64GC). Horumarinta mashruucu waxay ku furan yihiin shatiga la ogolyahay ee MulanPSL 2.0.
Mashruucu waxa uu daabacay sharaxaad ku saabsan qalabka wax lagu xiro oo ku qoran luqadda Chisel, oo loo turjumay Verilog, oo ah hirgelinta tixraaca ee ku saleysan FPGA, iyo sawirada jilitaanka shaqada jajabka ee Verilog simulator Verilator furan. Jaantusyada iyo sharraxaadda qaab-dhismeedka ayaa sidoo kale la heli karaa (guud ahaan in ka badan 400 dukumeenti iyo 50 kun oo xariiq oo kood ah), laakiin inta badan dukumeentigu waa Shiinaha. Debian GNU/Linux waxa loo istcimaalaa habka hawlgalka tixraaca ee loo isticmaalo in lagu tijaabiyo hirgelinta FPGA ku salaysan.
XiangShan wuxuu sheeganayaa inuu yahay chip-ka RISC-V ee ugu waxqabadka sarreeya, oo ka sarreeya SiFive P550. Bishan waxaa la qorsheeyay in la dhammaystiro tijaabada FPGA oo la sii daayo 8-core prototype chip oo ka shaqeeya 1.3 GHz oo ay soo saartay TSMC iyadoo la adeegsanayo tignoolajiyada habka 28nm, oo loo yaqaan "Yanqi Lake". Chip-ka waxaa ku jira kayd 2MB ah, kontaroolaha xusuusta oo taageera xusuusta DDR4 (illaa 32GB ee RAM) iyo interface PCIe-3.0-x4.
Waxqabadka chip-ka ugu horreeya ee imtixaanka SPEC2006 waxaa lagu qiyaasaa 7/Ghz, taas oo u dhiganta ARM Cortex-A72 iyo Cortex-A73 chips. Dhamaadka sanadka, wax soo saarka nooca labaad ee "Koofur Lake" oo leh qaab dhismeed la hagaajiyay ayaa la qorsheeyay, kaas oo loo wareejin doono SMIC oo leh tikniyoolajiyada habka 14nm iyo kordhinta inta jeer ee 2 GHz. Nooca labaad ayaa la filayaa inuu ku sameeyo 2006/Ghz ee imtixaanka SPEC10, kaas oo u dhow ARM Cortex-A76 iyo Intel Core i9-10900K processors, oo garaaca SiFive P550, RISC-V CPU ugu dhaqsaha badan, kaas oo leh waxqabad. oo ah 8.65/Ghz
Xusuusnow in RISC-V ay bixiso nidaam wax dhigista mashiinka furan oo dabacsan kaas oo u oggolaanaya microprocessors in loo dhiso codsiyada aan sharciga ahayn iyada oo aan loo baahnayn royalties ama shuruudaha isticmaalka. RISC-V wuxuu kuu ogolaanayaa inaad abuurto SoC-yada iyo soo-saareyaal gebi ahaanba furan. Waqtigan xaadirka ah, oo ku saleysan qeexida RISC-V, shirkado kala duwan iyo bulshooyin hoos yimaada shatiyo bilaash ah oo kala duwan (BSD, MIT, Apache 2.0) waxay horumarinayaan dhowr darsin oo kala duwanaansho ah oo kombuyuutar microprocessor ah, SoCs oo horeyba loo soo saaray chips. Nidaamyada hawlgalka ee leh taageerada tayada sare leh ee RISC-V waxaa ka mid ah Linux (oo hadda jira tan iyo markii la sii daayay Glibc 2.27, binutils 2.30, gcc 7 iyo Linux kernel 4.15) iyo FreeBSD.
Source: opennet.ru