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中文社区

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Latest Blogs
  • Streamline中基于统计的性能分析功能介绍

    章政
    章政
    原文参考 ARM性能分析器(Streamline) 7.0版开始支持基于SPE(统计性能分析扩展)的性能分析。SPE是Armv8.2-A架构中的一个可选扩展特性,它可以以很低的代价对处理器的流水线进行采样。Streamline可以从Arm Development Studio和Arm Mobile Stuido获取。 为什么需要SPE? Streamline前序版本只能通过硬件计数器和软中断中采样PC信息获取CPU的信息…
    • January 28, 2020
  • 让数值算法在Arm edge端跑的更快

    章政
    章政
    CMSIS DSP 库作为高度优化的嵌入式系统数字信号计算库一直以来深受广大开发者所喜爱,随着人工智能(Artificial Intelligence )逐步向Edge端扩展,Edge端的数字计算负载也越来越大,为了缓解计算的压力,各种框架也在Edge端采用CMSIS DSP库进行优化加速。科学计算环境和嵌入式开发环境有很大的区别,比如科学计算往往采用Python,SCIPy,Matlab,而这些环境一般是无法在低功耗嵌入式环境…
    • November 13, 2019

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Unanswered questions
  • Not Answered

    在macos上使用Arm Neon intrinsic进行交叉编译,cmake应该怎么配置呢? 0

    • NEON
    659 views
    0 replies
    Started 2 months ago
    by Bob Liao
  • Not Answered

    [Cortex-A7][SMP][Cache]在多核上跑多任务会出现卡死问题 0

    • Multiprocessor Systems
    • Cache coherency
    • Cortex-A7
    989 views
    0 replies
    Started 2 months ago
    by digtoana
  • Not Answered

    Store PC to different from memory and register? 0

    821 views
    0 replies
    Started 3 months ago
    by Tom Include
  • Not Answered

    C语言调用ARMv8汇编函数,开优化执行结果不正确 0

    857 views
    0 replies
    Started 3 months ago
    by chaoyue
  • Not Answered

    C语言调用 汇编函数 开优化结果错误 0

    909 views
    0 replies
    Started 3 months ago
    by chaoyue
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Most viewed questions
  • Suggested Answer

    请教:1、集成ARM TrustZone内核的CPU/SOC,是否可由外部SE(单片机小系统)硬件信号优先控制保持TEE状态,不切换回REE?即:当REE切换到TEE后,外部SE(单片机小系统)输出控制信号,保持TEE状态,不切换回REE,只有当SE释放此控制信号,TEE才能自主切换回REE。2、ARM TrustZone内核硬件上能支持这样设计吗?谢谢。 0

    1791 views
    2 replies
    Latest over 3 years ago
    by Song Bin 宋斌
  • Suggested Answer

    TEE对ArmV8 平台这样的多核环境的安全机制是怎样的? 0

    • OP-TEE
    • TrustZone for Armv8-M
    1793 views
    2 replies
    Latest 10 months ago
    by leipinyuan
  • Suggested Answer

    Cortex M3 BRCHSTAT usage 0

    1824 views
    1 reply
    Latest over 2 years ago
    by Haiyan
  • Answered

    CA57中所有Core共享一个GIC CPU interface? 0

    • Processor
    • chinese
    • Cortex-A57
    • 中文
    • mpcore
    • 处理器
    1832 views
    1 reply
    Latest over 6 years ago
    by yongfeng
  • Suggested Answer

    请教:最近需要使用cortex-a8中PMU进行cycle计数,但是始终不能产生PMCCNTR的溢出中断,请问溢出中断要怎么产生,它的中断号又怎么去获取? 0

    1838 views
    6 replies
    Latest over 1 year ago
    by 章政
<>

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