{"id":30031,"date":"2019-10-31T21:33:20","date_gmt":"2019-10-31T18:33:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/linux-foundation-zajmetsya-open-source-chipami\/"},"modified":"2019-10-31T21:33:20","modified_gmt":"2019-10-31T18:33:20","slug":"linux-foundation-zajmetsya-open-source-chipami","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/linux-foundation-zajmetsya-open-source-chipami","title":{"rendered":"Linux Foundation se va ocupa de chipurile open source","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Funda\u021bia Linux a deschis o nou\u0103 direc\u021bie - CHIPS Alliance. \u00cen cadrul acestui proiect, organiza\u021bia va dezvolta un sistem deschis de instruc\u021biuni RISC-V \u0219i tehnologiile necesare pentru crearea de procesoare bazate pe acesta. Vom detalia mai departe ce se \u00eent\u00e2mpl\u0103 \u00een acest domeniu.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/444664\/\"><img decoding=\"async\" alt=\"Linux Foundation se va ocupa de chipurile open source\" src=\"\/wp-content\/uploads\/2019\/03\/1462a91d6041c6aa6c2fdb4267ecbd92.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<i>\/ \u0444\u043e\u0442\u043e <noindex><a rel=\"nofollow\" href=\"https:\/\/www.flickr.com\/photos\/120586634@N05\/32418936265\/\">Gareth Halfacree<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/creativecommons.org\/licenses\/by-sa\/2.0\/\">CC BY-SA<\/a><\/noindex><\/i><\/p>\n<h2>De ce a ap\u0103rut CHIPS Alliance<\/h2>\n<p>\nPachetele care protejeaz\u0103 \u00eempotriva Meltdown \u0219i Spectre scad, \u00een unele cazuri <noindex><a rel=\"nofollow\" href=\"https:\/\/www.tomshardware.com\/news\/linux-spectre-patch-50-percent-performance-penalty,38099.html\">performan\u021ba<\/a><\/noindex> serverelor cu 50%. Totodat\u0103, continu\u0103 s\u0103 apar\u0103 noi varia\u021bii ale vulnerabilit\u0103\u021bilor legate de execu\u021bia speculativ\u0103 a instruc\u021biunilor. Despre una dintre acestea <noindex><a rel=\"nofollow\" href=\"https:\/\/arxiv.org\/pdf\/1903.00446.pdf\">s-a aflat la \u00eenceputul lunii martie<\/a><\/noindex> - speciali\u0219tii \u00een securitate cibernetic\u0103 au denumit-o Spoiler. Aceast\u0103 situa\u021bie influen\u021beaz\u0103 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.pcworld.com\/article\/3299477\/solving-spectre-and-meltdown-may-ultimately-require-an-entirely-new-type-of-processor.html\">s-a dezactivat<\/a><\/noindex> nevoia de a revizui solu\u021biile hardware existente \u0219i abord\u0103rile pentru dezvoltarea acestora. \u00cen special, Intel <noindex><a rel=\"nofollow\" href=\"https:\/\/hackaday.com\/2018\/12\/12\/intel-announces-faster-processor-patched-for-meltdown-and-spectre\/\">se preg\u0103te\u0219te deja<\/a><\/noindex> o nou\u0103 arhitectur\u0103 pentru procesoarele sale, care s\u0103 nu fie afectat\u0103 de Meltdown \u0219i Spectre.<\/p>\n<p>Nu au r\u0103mas nici Linux Foundation deoparte. Organiza\u021bia a lansat propria ini\u021biativ\u0103 - CHIPS Alliance - ai c\u0103rei participan\u021bi se vor ocupa cu dezvoltarea procesoarelor bazate pe RISC-V.<\/p>\n<h2>Ce proiecte sunt deja \u00een dezvoltare<\/h2>\n<p><\/p>\n<blockquote><p>Printre participan\u021bii CHIPS Alliance se num\u0103r\u0103 Google, Western Digital (WD) \u0219i SiFive. Fiecare dintre acestea \u0219i-a prezentat propriile dezvolt\u0103ri. Vom vorbi despre c\u00e2teva dintre ele.<\/p><\/blockquote>\n<p><\/p>\n<h5>RISCV-DV<\/h5>\n<p>\nGigantul IT de c\u0103utare a donat o platform\u0103 open source pentru testarea procesoarelor bazate pe RISC-V. Solu\u021bia genereaz\u0103 aleatoriu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/riscv-dv\">comenzi care<\/a><\/noindex> verific\u0103 func\u021bionalitatea dispozitivului: testeaz\u0103 procesele de tranzi\u021bie, stiva de apeluri, <noindex><a rel=\"nofollow\" href=\"https:\/\/content.riscv.org\/wp-content\/uploads\/2018\/12\/14.25-Tao-Liu-Richard-Ho-UVM-based-RISC-V-Processor-Verification-Platform.pdf\">permit<\/a><\/noindex> registrii CSR \u0219i altele. <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Control\/Status_Register\">Iat\u0103 cum arat\u0103 o clas\u0103<\/a><\/noindex>responsabil\u0103 cu efectuarea unui test simplu de instruc\u021biuni aritmetice:<\/p>\n<p>De exemplu, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/google\/riscv-dv\/blob\/master\/test\/riscv_instr_test_lib.sv\">class riscv_arithmetic_basic_test extends riscv_instr_base_test;\n\n  `uvm_component_utils(riscv_arithmetic_basic_test)\n  `uvm_component_new\n\n  virtual function void randomize_cfg();\n    cfg.instr_cnt = 10000;\n    cfg.num_of_sub_program = 0;\n    cfg.no_fence = 1;\n    cfg.no_data_page = 1'b1;\n    cfg.no_branch_jump = 1'b1;\n    `DV_CHECK_RANDOMIZE_WITH_FATAL(cfg,\n                                   init_privileged_mode == MACHINE_MODE;\n                                   max_nested_loop == 0;)\n    `uvm_info(`gfn, $sformatf(\"riscv_instr_gen_config is randomized:n%0s\",\n                    cfg.sprint()), UVM_LOW)\n  endfunction\n\nendclass<\/a><\/noindex>Dezvoltatorii, platforma se deosebe\u0219te de alternative prin faptul c\u0103 permite testarea secven\u021bial\u0103 a tuturor componentelor cipului, inclusiv blocul de memorie.<\/p>\n<pre><code class=\"cpp\">Protocolul OmniXtend\n<\/code><\/pre>\n<p>\nDup\u0103 <noindex><a rel=\"nofollow\" href=\"https:\/\/content.riscv.org\/wp-content\/uploads\/2018\/12\/14.25-Tao-Liu-Richard-Ho-UVM-based-RISC-V-Processor-Verification-Platform.pdf\">vorbelor lor<\/a><\/noindex> Este un protocol de re\u021bea de la WD, care asigur\u0103 coeren\u021ba cache-ului \u00een timpul transferului de date peste Ethernet.<\/p>\n<h5>OmniXtend<\/h5>\n<p>\nOmniXtend <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/westerndigitalcorporation\/omnixtend\">OmniXtend<\/a><\/noindex> permite comunicarea direct\u0103 cu memoria cache a procesorului \u0219i este utilizat pentru conectarea diferitelor tipuri de acceleratoare: GPU sau FPGA. De asemenea, este potrivit pentru crearea sistemelor bazate pe mai multe cipuri RISC-V.<\/p>\n<p>Protocolul este deja suportat <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/westerndigitalcorporation\/swerv_eh1\">de cipurile SweRV<\/a><\/noindex>, orientate spre procesarea datelor \u00een centrele de date. SweRV este un procesor supercalar cu dou\u0103 pipeline-uri de 32 de bi\u021bi, realizat pe un proces tehnologic de 28 de nanometri. Fiecare pipeline are nou\u0103 niveluri, ceea ce permite \u00eenc\u0103rcarea \u0219i executarea mai multor comenzi simultan. Dispozitivul func\u021bioneaz\u0103 la o frecven\u021b\u0103 de 1,8 GHz.<\/p>\n<h5>Generatorul Rocket Chip<\/h5>\n<p>\nEste o solu\u021bie de la compania SiFive, fondat\u0103 de dezvoltatorii tehnologiei RISC-V. <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/freechipsproject\/rocket-chip\">Rocket Chip<\/a><\/noindex> este un generator de nuclee de procesor RISC-V scris \u00een Chisel. El <noindex><a rel=\"nofollow\" href=\"https:\/\/www2.eecs.berkeley.edu\/Pubs\/TechRpts\/2016\/EECS-2016-17.pdf\">reprezint\u0103<\/a><\/noindex> este un set de biblioteci parametrizate, care sunt utilizate pentru a crea <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A1%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D0%B0_%D0%BD%D0%B0_%D0%BA%D1%80%D0%B8%D1%81%D1%82%D0%B0%D0%BB%D0%BB%D0%B5\">SoC<\/a><\/noindex>.<\/p>\n<p>\u00cen ceea ce prive\u0219te <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/freechipsproject\/chisel3\/\">Chisel<\/a><\/noindex>, este un limbaj de descriere a hardware-ului bazat pe Scala. El genereaz\u0103 cod de nivel inferior \u00een Verilog, care <noindex><a rel=\"nofollow\" href=\"https:\/\/chisel.eecs.berkeley.edu\/\">este adecvat<\/a><\/noindex> este destinat proces\u0103rii pe ASIC \u0219i FPGA. Astfel, permite utilizarea principiilor OOP \u00een dezvoltarea <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A3%D1%80%D0%BE%D0%B2%D0%B5%D0%BD%D1%8C_%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%BE%D0%B2%D1%8B%D1%85_%D0%BF%D0%B5%D1%80%D0%B5%D0%B4%D0%B0%D1%87\">RTL<\/a><\/noindex>.<\/p>\n<h2>Perspectivele alian\u021bei<\/h2>\n<p>\nExper\u021bii afirm\u0103 c\u0103 ini\u021biativa Linux Foundation va face pia\u021ba procesorilor mai democratic\u0103 \u0219i mai deschis\u0103 pentru noi juc\u0103tori. La IDC <noindex><a rel=\"nofollow\" href=\"https:\/\/devops.com\/linux-foundation-to-host-chips-alliance-project-to-propel-industry-innovation-through-open-source-cpu-chip-and-soc-design\/\">pun accent pe<\/a><\/noindex>, cre\u0219terea popularit\u0103\u021bii acestor proiecte va avea un impact pozitiv asupra dezvolt\u0103rii tehnologiilor de \u00eenv\u0103\u021bare automat\u0103 \u0219i a sistemelor AI \u00een general.<\/p>\n<p><img decoding=\"async\" alt=\"Linux Foundation se va ocupa de chipurile open source\" src=\"\/wp-content\/uploads\/2019\/03\/9b7ea1fb634f7fc1e258d38e2fe96398.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>\/ \u0444\u043e\u0442\u043e <noindex><a rel=\"nofollow\" href=\"https:\/\/www.flickr.com\/photos\/130561288@N04\/46764481872\">Fritzchens Fritz<\/a><\/noindex> PD<\/i><\/p>\n<p>Dezvoltarea procesoarelor open source va permite, de asemenea, reducerea costurilor de proiectare a chipurilor personalizate. Cu toate acestea, acest lucru se va \u00eent\u00e2mpla doar \u00een cazul \u00een care comunitatea Linux Foundation va reu\u0219i s\u0103 atrag\u0103 un num\u0103r suficient de dezvoltatori.<\/p>\n<h2>Proiecte similare<\/h2>\n<p>\nDezvoltarea proiectelor legate de hardware-ul deschis este realizat\u0103 \u0219i de alte organiza\u021bii. Un exemplu poate fi consor\u021biul CXL, care a prezentat la mijlocul lunii martie standardul Compute Express Link. Tehnologia este un analog al OmniXtend \u0219i leag\u0103, de asemenea, CPU, GPU, FPGA. Pentru schimbul de date, standardul utilizeaz\u0103 magistrala PCIe 5.0.<\/p>\n<p>Un alt proiect care se ocup\u0103 de dezvoltarea tehnologiilor procesorului este MIPS Open, care a ap\u0103rut \u00een decembrie 2018. Ini\u021biativa a fost creat\u0103 de startupul Wave Computing. Dezvoltatorii pl\u0103nuiesc <noindex><a rel=\"nofollow\" href=\"https:\/\/wavecomp.ai\/mips-open\/\">s\u0103 deschid\u0103<\/a><\/noindex> accesul la ultimele seturi de instruc\u021biuni MIPS de 32 \u0219i 64 de bi\u021bi pentru comunitatea IT. \u00cenceperea proiectului <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sensorsmag.com\/embedded\/mips-open-advisory-board-open-for-biz\">este a\u0219teptat\u0103<\/a><\/noindex> va avea loc \u00een urm\u0103toarele luni.<\/p>\n<p>\u00cen general, abordarea open source devine standard nu doar pentru software, ci \u0219i pentru hardware. Astfel de proiecte sunt sus\u021binute de companii mari. Prin urmare, ne putem a\u0219tepta ca \u00een viitorul apropiat pe pia\u021b\u0103 s\u0103 apar\u0103 mai multe dispozitive bazate pe standarde hardware deschise.<\/p>\n<p>\nPost\u0103ri recente de pe blogul nostru corporativ:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/novosti\/chto-nuzhno-znat-o-pci-dss-obzor-standarta\/\">Ce trebuie s\u0103 \u0219tii despre PCI DSS: o prezentare a standardului<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/tendencii\/mir-do-i-posle-kak-izmenilas-zhizn-s-nastupleniem-dns-flag-day\/\">Lumea \u00eenainte \u0219i dup\u0103. Cum s-a schimbat via\u021ba odat\u0103 cu sosirea DNS Flag Day<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/iaas-blog.it-grad.ru\/funkcionalnost\/posleavarijnoe-vosstanovlenie-kak-usluga-disaster-recovery-as-a-service\/\">Recuperarea post-incident ca serviciu: ce trebuie s\u0103 \u0219tii<\/a><\/noindex><\/li>\n<\/ul>\n<p>\nPost\u0103ri din canalul nostru Telegram:<\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/201\">Cum se administreaz\u0103 hardware-ul \u00een centrele de date \u2014 dou\u0103 tehnologii noi<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/194\">Cum protejeaz\u0103 un provider IaaS datele clien\u021bilor<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/iaasblog\/190\">De ce era necesar clientul HTML5 pentru VMware vSphere?<\/a><\/noindex><\/li>\n<\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/it-grad\/blog\/444664\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Linux Foundation \u043e\u0442\u043a\u0440\u044b\u043b\u0438 \u043d\u043e\u0432\u043e\u0435 \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u2014 CHIPS Alliance. \u0412 \u0440\u0430\u043c\u043a\u0430\u0445 \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u043a\u043e\u043c\u0430\u043d\u0434 RISC-V \u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 \u043d\u0430 \u0435\u0451 \u043e\u0441\u043d\u043e\u0432\u0435. \u0420\u0430\u0441\u0441\u043a\u0430\u0436\u0435\u043c \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435, \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432 \u044d\u0442\u043e\u0439 \u0441\u0444\u0435\u0440\u0435. \/ \u0444\u043e\u0442\u043e Gareth Halfacree CC BY-SA \u041f\u043e\u0447\u0435\u043c\u0443 \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f CHIPS Alliance \u041f\u0430\u0442\u0447\u0438, \u0437\u0430\u0449\u0438\u0449\u0430\u044e\u0449\u0438\u0435 \u043e\u0442 Meltdown \u0438 Spectre, \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0441\u043b\u0443\u0447\u0430\u044f\u0445 \u0441\u043d\u0438\u0436\u0430\u044e\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-30031","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Linux Foundation \u043e\u0442\u043a\u0440\u044b\u043b\u0438 \u043d\u043e\u0432\u043e\u0435 \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u2014 CHIPS Alliance. \u0412 \u0440\u0430\u043c\u043a\u0430\u0445 \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u0443\u044e 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