{"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\/fr\/blog\/news\/gotov-k-proizvodstvu-pervyj-prototip-otkrytogo-chipa-libre-soc","title":{"rendered":"Le premier prototype de la puce open source Libre-SOC est pr\u00eat \u00e0 \u00eatre produit.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Le projet Libre-SOC, qui d\u00e9veloppe une puce ouverte avec une architecture hybride inspir\u00e9e du CDC 6600, o\u00f9 pour r\u00e9duire la taille et la complexit\u00e9 de la puce, les instructions CPU, VPU et GPU ne sont pas s\u00e9par\u00e9es et sont propos\u00e9es dans un seul ISA, a atteint le stade de transfert en production du premier prototype de test. Au d\u00e9part, le projet s'est d\u00e9velopp\u00e9 sous le nom de Libre RISC-V, mais a \u00e9t\u00e9 renomm\u00e9 Libre-SOC apr\u00e8s la d\u00e9cision de remplacer RISC-V par l'utilisation de l'architecture de jeu d'instructions (ISA) OpenPOWER 3.0.     <\/p>\n<p>Le projet vise \u00e0 cr\u00e9er un syst\u00e8me sur puce (SoC) complet, enti\u00e8rement ouvert et sans redevances, qui pourra \u00eatre utilis\u00e9 dans des ordinateurs monocartes, des netbooks et divers dispositifs portables. En plus des instructions et des registres g\u00e9n\u00e9raux de la CPU, Libre-SOC fournit dans un bloc fonctionnel de processeur des capacit\u00e9s pour ex\u00e9cuter des op\u00e9rations vectorielles et des calculs sp\u00e9cialis\u00e9s, propres \u00e0 la VPU et au GPU. La puce utilise l'architecture OpenPOWER, l'extension Simple-V avec des instructions pour la vectorisation et le traitement parall\u00e8le des donn\u00e9es, ainsi que des instructions sp\u00e9cialis\u00e9es pour la conversion en ARGB et l'ex\u00e9cution d'op\u00e9rations 3D standard.     <\/p>\n<p>Les instructions GPU sont ax\u00e9es sur l'utilisation avec l'API graphique Vulkan, tandis que la VPU se concentre sur l'acc\u00e9l\u00e9ration de la conversion YUV-RGB et le d\u00e9codage des formats MPEG1\/2, MPEG4 ASP (xvid), H.264, H.265, VP8, VP9, AV1, MP3, AC3, Vorbis et Opus. Un pilote libre est en d\u00e9veloppement pour Mesa, utilisant les capacit\u00e9s de Libre-SOC pour fournir une mise en \u0153uvre logicielle acc\u00e9l\u00e9r\u00e9e par mat\u00e9riel de l'API graphique Vulkan. Par exemple, les shaders Vulkan peuvent \u00eatre transmis via un moteur JIT pour s'ex\u00e9cuter en utilisant les instructions sp\u00e9cialis\u00e9es disponibles dans Libre-SOC.    <\/p>\n<p>Dans le prochain prototype de test, il est pr\u00e9vu d'impl\u00e9menter l'extension SVP64 (Vectorisation \u00e0 longueur variable), permettant d'utiliser Libre-SOC comme processeur vectoriel (en plus de 32 registres de 64 bits g\u00e9n\u00e9raux, 128 registres seront fournis pour les calculs vectoriels). Le premier prototype ne comprend qu'un seul c\u0153ur fonctionnant \u00e0 une fr\u00e9quence de 300 MHz, mais au cours des deux prochaines ann\u00e9es, une version \u00e0 4 c\u0153urs sera pr\u00e9vue, suivie d'une version \u00e0 8 c\u0153urs, et \u00e0 long terme, d'une version \u00e0 64 c\u0153urs.    <\/p>\n<p>Le premier lot de puces sera produit par TSMC en utilisant un proc\u00e9d\u00e9 de 180 nm. Tous les r\u00e9sultats du projet sont diffus\u00e9s sous des licences libres, y compris les fichiers au format GDS-II d\u00e9crivant la topologie compl\u00e8te de la puce, suffisante pour commencer sa propre production. Libre-SOC sera la premi\u00e8re puce enti\u00e8rement ind\u00e9pendante bas\u00e9e sur l'architecture Power, produite en dehors d'IBM. Le d\u00e9veloppement a utilis\u00e9 le langage de description mat\u00e9rielle nMigen (HDL bas\u00e9 sur Python, sans utiliser VHDL ni Verilog), les biblioth\u00e8ques de cellules standard FlexLib du projet Chips4Makers et la suite d'outils VLSI libre Coriolis2 pour la conversion de HDL en GDS-II.    <\/p>\n<p>Le d\u00e9veloppement de Libre-SOC a \u00e9t\u00e9 financ\u00e9 par la NLnet Foundation, qui a allou\u00e9 400 000 euros pour cr\u00e9er une puce enti\u00e8rement ouverte dans le cadre d'un programme visant \u00e0 d\u00e9velopper des solutions techniques fondamentales v\u00e9rifiables et dignes de confiance. La puce mesure 5,5 x 5,9 mm et comprend 130 000 portes logiques. Elle est compos\u00e9e de quatre modules SRAM de 4 Ko et d'un bloc de verrouillage de phase (PLL) fonctionnant \u00e0 300 MHz.          <center><img decoding=\"async\" alt=\"Le premier prototype de la puce open source Libre-SOC est pr\u00eat \u00e0 \u00eatre produit.\" src=\"\/wp-content\/uploads\/2021\/07\/e0201b9490af3c393166c02a73bc6106.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55473\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":100741,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u043e\u0435\u043a\u0442 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