{"id":59743,"date":"2020-03-30T15:15:57","date_gmt":"2020-03-30T15:15:57","guid":{"rendered":"https:\/\/\/gap9-pourquoi-9-cores-cest-beaucoup-mieux-que-8\/"},"modified":"2020-03-30T15:15:57","modified_gmt":"2020-03-30T15:15:57","slug":"gap9-pourquoi-9-cores-cest-beaucoup-mieux-que-8","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/gap9-pourquoi-9-cores-cest-beaucoup-mieux-que-8\/","title":{"rendered":"GAP9: pourquoi 9 Cores c’est beaucoup mieux que 8"},"content":{"rendered":"

Lors de son introduction, le GAP8 contenait huit c\u0153urs RISC-V<\/a> (fabriqu\u00e9 par Greenwaves, Grenoble, France), ce qui semblait \u00eatre un bon nombre. Cependant, l’un des coeurs \u00e9tait utilis\u00e9 pour g\u00e9rer le syst\u00e8me, en laissant sept pour faire le travai. Cela fonctionne la plupart du temps, mais la puissance de deux a un effet sur la r\u00e9partition des t\u00e2ches. Ainsi, avoir huit c\u0153urs plus un est plus logique, d’o\u00f9 le GAP9.<\/span><\/p>\n

GAP9 est la derni\u00e8re incarnation avec neuf c\u0153urs RISC-V 32 bits (voir figure). Le GAP9 est fabriqu\u00e9 en utilisant le processus FDX 22 nm de GLOBALFOUNDRIES. L’architecture globale n’a pas beaucoup chang\u00e9 et ces c\u0153urs peuvent g\u00e9rer les t\u00e2ches d’apprentissage automatique \u00e0 l’aide de plates-formes telles que TensorFlow Lite for Microcontrollers. Bien que les c\u0153urs soient optimis\u00e9s pour les t\u00e2ches d’apprentissage automatique (ML), il existe du mat\u00e9riel suppl\u00e9mentaire qui prend en charge les virgules flottantes et le traitement vectoriel. Cela fournit une am\u00e9lioration significative des performances pour les applications ML par rapport \u00e0 GAP8.<\/span><\/p>\n

 <\/p>\n

\"\"<\/p>\n

GAP9 fournit huit c\u0153urs RISC-V – le neuvi\u00e8me g\u00e8re le syst\u00e8me. Celles-ci sont compl\u00e9t\u00e9es par une prise en charge de virgule flottante et de traitement vectoriel con\u00e7ue pour g\u00e9rer les t\u00e2ches d’apprentissage automatique<\/span>.<\/span><\/p>\n

Le nouveau processeur peut fonctionner avec des nombres \u00e0 virgule flottante de 8, 16 et 32 \u200b\u200bbits ainsi qu’avec des entiers 2 et 4 bits. Il g\u00e9rait d\u00e9j\u00e0 des entiers 8, 16 et 32 \u200b\u200bbits. Les valeurs num\u00e9riques plus petites permettent une prise en charge plus efficace du mod\u00e8le ML (apprentissage automatique). Tous les \u00e9l\u00e9ments de traitement partagent un sous-syst\u00e8me de m\u00e9moire pouvant fournir 41,6 Go\/s. Et les \u00e9l\u00e9ments de calcul sont capables de fournir 50 GOPS de performances tout en n’utilisant que 50 mW de puissance.<\/span><\/p>\n

Le GAP9 effectue un traitement vid\u00e9o de base avec un CSI2 et des interfaces parall\u00e8les li\u00e9es \u00e0 un mod\u00e8le ML comme MobleNetV1. Cela permet de traiter des flux vid\u00e9o de 160 x 160 pixels en utilisant seulement 806 \u03bcW \/ image \/ s.<\/p>\n

Les autres fonctionnalit\u00e9s de la puce incluent un mat\u00e9riel de cryptographie prenant en charge AES128 \/ 256. De plus, il existe une unit\u00e9 de fonction emp\u00eachant le cloangae physique (PUF: <\/span>Physically Unclonable Function ).<\/span><\/p>\n

The GAP9 performs basic video processing with a CSI2 and parallel interfaces tied to an ML model like MobleNetV1. This can process 160- by 160-pixel video streams using only 806 \u03bcW\/frame\/s.<\/p>\n

lire aussi:<\/p>\n

Un processeur cibl\u00e9 sp\u00e9cifiquement pour l\u2019IoT chez GreenWaves Technologies SAS<\/a><\/p>\n

Le processeur RISC-V Mr Wolf arrive pour r\u00e9soudre les probl\u00e8mes<\/a><\/p>\n

Related links:<\/p>\n

https:\/\/greenwaves-technologies.com\/<\/a><\/p>\n

\u20ac5 octacore MCU for edge analytics and sensor fusion<\/a><\/p>\n

News articles: <\/strong><\/p>\n

IoT processor beats Cortex-M, claims startup<\/a><\/p>\n

Swiss open-source processor core ready for IoT <\/a><\/p>\n

Startup\u2019s IoT SoC Packs a Punch <\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

GreenWaves a fait plus qu’ajouter un c\u0153ur suppl\u00e9mentaire au GAP9 pour fournir un apprentissage automatique plus performant.<\/p>\n","protected":false},"author":22,"featured_media":59744,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[881],"tags":[],"domains":[47],"ppma_author":[1149],"class_list":["post-59743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nouveaux-produits","domains-electronique-eci"],"acf":[],"yoast_head":"GAP9: pourquoi 9 Cores c'est beaucoup mieux que 8 ...<\/title>\n<meta name=\"description\" content=\"GreenWaves a fait plus qu'ajouter un c\u0153ur suppl\u00e9mentaire au GAP9 pour fournir un apprentissage automatique plus performant.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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