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漂流瓶终于彻底拜拜 微信7.0.4新版体验
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借贷宝:停止催收百名裸条女大学生 未满23岁将不得借贷
京东白条多地频现盗刷 消费者遭催收公司“逼债”
借款野蛮催收行为将被规范 真是几家欢喜几家愁
为规范网贷催收 上海互金协会发行业倡议书
腾讯解释为什么微信没有夜间模式 真相你相信吗?
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移动SoC支持SMT多线程了 ARM发布7nm Cortex-A65AE处理器

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编辑: 1   作者: cnbeta   时间: 2018/12/19 07:24/00  

X86及Power处理器都支持SMT多线程技术,目的是为了尽可能获得更高的多线程性能,但是移动处理器一直没有上SMT的,倒不是ARM等厂商没那个技术,是因为没必要,因为移动处理器还考虑能效问题,真想要多线程性能直接上多核就行了。ARM今晚发布了Cortex-A65AE处理器,它是面向汽车电子市场的,为7nm工艺优化,其最大特点就是支持了SMT多线程,性能吞吐率比前代高3.5倍,预计2020年上市。

针对自动汽车电子市场,ARM今年9月份推出了Cortex-A76AE处理器,AE代表的是Automotive Enhanced驾驶增强,主要用于汽车的ADAS高级驾驶员辅助系统,除了强调性能之外更注重安全性,比如支持Split-Lock分离-锁定技术,使得CPU内核可以运行在不同的模式下,分离模式下性能最大化,锁定模式下两个核心/线程可以互相锁定,确保安全性。

除了安全性能之外,Cortex-A65AE处理器还是ARM首个支持SMT多线程技术的,简单来说就是类似现在AMD、英特尔X86处理器的多线程一样,核心数不变的情况下线程翻倍。

Cortex-A65AE处理器支持SMT超线程技术是为了提高数据吞吐率,毕竟汽车辅助驾驶系统需要应对大量传感器,对计算及吞吐量都有较高的要求。根据ARM的资料,Cortex-A65AE处理器在能效更高的情况下吞吐率比前代提升3.5倍,而这个前代指的是Cortex-A53处理器。

ARM对Cortex-A65AE处理器的架构介绍总体还是偏少的,所以具体的性能、架构细节没什么料,不过它也不是用于消费级的,而且要到2020年才有可能推出实物。