{"id":201453,"date":"2014-01-07T03:20:00","date_gmt":"2014-01-07T02:20:00","guid":{"rendered":"https:\/\/cms.galaxiemedia.fr\/tomshardware\/2014\/01\/07\/mppa-le-processeur-256-coeurs-made-in-france\/"},"modified":"2023-06-28T12:18:38","modified_gmt":"2023-06-28T10:18:38","slug":"mppa-le-processeur-256-coeurs-made-in-france","status":"publish","type":"post","link":"https:\/\/www.tomshardware.fr\/mppa-le-processeur-256-coeurs-made-in-france\/","title":{"rendered":"MPPA, le processeur 256 c\u0153urs made in France"},"content":{"rendered":"\n

Fait int\u00e9ressant, le CES s\u2019ouvre aux start-ups internationales depuis 2012 dans un espace d\u00e9di\u00e9, et la France y est cette ann\u00e9e le pays le plus repr\u00e9sent\u00e9, preuve du dynamisme des jeunes pousses high-tech tricolores.<\/p>\n\n\n\n

\"https:\/\/www.tomshardware.fr\/content\/uploads\/sites\/3\/2014\/01\/kalray1.jpg\"
Le processeur MPPA-256<\/span><\/span><\/span><\/figcaption><\/figure>\n\n\n\n

Parmi la quinzaine d\u2019entreprises que nous avons pu voir repr\u00e9sent\u00e9es ici \u00e0 Las Vegas, nous avons d\u2019abord \u00e9t\u00e9 intrigu\u00e9s par Kalray, une soci\u00e9t\u00e9 qui ne pr\u00e9sente rien de moins qu\u2019un processeur<\/a> \u00e0 256 c\u0153urs, le MMPA-256. Fond\u00e9e en 2008 par un ancien de STMicroelectronics, elle compte d\u00e9sormais une soixantaine de personnes dont une grosse majorit\u00e9 oeuvrant au R&D \u00e0 Grenoble, et propose depuis quelques mois son premier produit, le MMPA. Acronyme de Multi-Purpose Processor Array<\/em> qui renvoi \u00e0 l\u2019id\u00e9e d\u2019un processeur multi-fonctions et non sp\u00e9cialis\u00e9 type FPGA, ce CPU est avant tout destin\u00e9 aux applications dont le crit\u00e8re num\u00e9ro est la puissance par watt et orient\u00e9es basse consommation puisqu\u2019on parle d\u2019une consommation typique de 5 W (10 Watts au maximum). Mais \u00e0 un niveau de performances bien sup\u00e9rieur \u00e0 celui d\u2019un FPGA.<\/p>\n\n\n\n

Le MPPA-256<\/strong><\/h2>\n\n\n\n

Techniquement le MPPA-256 int\u00e8gre 256 cores VLIW organis\u00e9s en 16 groupes de 16 cores chacun (+ 1 core syst\u00e8me) dot\u00e9s d\u2019une FPU 32 bits \/ 64 bits IEEE 754. Au format BGA, il est grav\u00e9 en 28 nm (CMOS) et int\u00e8gre 2 contr\u00f4leurs DDR3 64 bits, 2 contr\u00f4leurs Ethernet 40 Gbits\/s, 2 liens PCI Express 3.0 8x et des interfaces s\u00e9ries et parall\u00e8les, et peut travailler avec de nombreux autres MPPA 256. Il est accompagn\u00e9 de 32 + 2 Mo de cache. L’ensemble p\u00e8se la bagatelle de 3 milliards de transistors pour un die d’une surface d’environ 300 mm\u00b2.<\/p>\n\n\n\n

\"Image
D\u00e9tails d’un des 16 clusters constituant le MPPA-256<\/span><\/span><\/span><\/span><\/span><\/figcaption><\/figure>\n\n\n\n

En termes de puissance th\u00e9orique, on parle de 230 GFLOPS, le processeur \u00e9tant pr\u00e9vu pour fonctionner \u00e0 400 MHz, ce qui le situerait, du point de vue th\u00e9orique et avec toutes les limites que l\u2019exercice comporte, environ 5 fois plus int\u00e9ressant en rapport Flops par watts que les Intel Xeon haut de gamme qui atteignent certes 700 GFLOPS mais conc\u00e8dent 130 W \u00e0 eux seuls sur la prise. Une valeur \u00e0 multiplier par 8 et 16 pour les MPPA-512 et MPPA-1024 pr\u00e9vus fin 2015 gr\u00e2ce au recours au process 16 nm, car Kalray en profite pour revoir la conception et doubler la puissance en FPU double pr\u00e9cision et m\u00eame la tripler en simple pr\u00e9cision, mais \u00e9galement viser une fr\u00e9quence de 7-800 MHz. Avant cela, une version 64 cores du MPPA devrait arriver prochainement avec au programme une consommation d’un watt.<\/p>\n\n\n\n

\"Image
Le MPPA int\u00e8gre la bagatelle de 1600 pins<\/span><\/span><\/span><\/span><\/span><\/figcaption><\/figure>\n\n\n\n

Consciente que le meilleur processeur du monde ne pourrait rien sans un environnement logiciel ad\u00e9quat et de qualit\u00e9, la soci\u00e9t\u00e9 propose le MMPA Accesscore, un SDK utilisant un langage de programmation de haut niveau proche du C. Ne lui reste que le plus difficile : convaincre les clients. Sur place, elle pr\u00e9sente d’ailleurs en ce sens et en premi\u00e8re mondiale chez Rovi (DivX) l’encodage vid\u00e9o en temps r\u00e9el en HEVC UltraHD via 4 MMPA-256.<\/p>\n","protected":false},"excerpt":{"rendered":"

Fait int\u00e9ressant, le CES s\u2019ouvre aux start-ups internationales depuis 2012 dans un espace d\u00e9di\u00e9, et la France y est cette ann\u00e9e le pays le plus repr\u00e9sent\u00e9, preuve du dynamisme des jeunes pousses high-tech tricolores.KalrayParmi la\u2026<\/p>","protected":false},"author":82,"featured_media":201454,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[487,4071],"tags":[],"hubs":[],"class_list":["post-201453","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-processeurs"],"acf":{"post_show_excerpt":false,"post_source":{"title":"Tom's Hardware FR","url":"https:\/\/www.tomshardware.fr\/","target":""},"display_mode":"big-img","post_show_in_home":false,"hide_sidebar":false,"hide_advertising":false},"yoast_head":"\nMPPA, le processeur 256 c\u0153urs made in France<\/title>\n<meta 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