• The cortex-A7's pipeline support dual-issue, so I want to ask what's the dual-issue mean?

    Kun.Niu
    Kun.Niu

    The cortex-A7's pipeline support dual-issue, so I want to ask what's the dual-issue mean?

    I find some answers say that dual-issue means that the cortex-A7 can issue two instructions per clock.

    But in the cortex-A7's pipeline diagraph, it has integer…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Explain 8 stage pipeline of ARM Cortex a7?

    rakeshgp3
    rakeshgp3

    Brief explanation of each stage of ARM pipe-lining.  

    How many Neon pipeline stages are their?

    What is dual issue in ARM pipe-lining?

    • over 1 year ago
    • Processors
    • Cortex-A / A-Profile forum
  • NE10-Library -> FIR-Filter cycle counts: C-version faster than NEON-version?

    CFriebel
    CFriebel

    Hi,

    i'm currently trying to measure cycle counts for FIR-filtering with the NE10 library. I'm using a Raspberry Pi 2 with ARM Cortex-A7 running on Raspbian as a target.

    I activated the Cortex-A7 performance counter register to read out the cycles…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • NEON: Cortex A7 is 4 times slower than Cortex A8 ?

    Laurent
    Laurent

    I'm seeing Cortex-A7 cycle-timing table here :

    http://hardwarebug.org/2014/05/15/cortex-a7-instruction-cycle-timings/


    For example, 

    VADD.F32 Dd, Dn, Dm takes 2 cycles

    VADD.F32 Qd, Qn, Qm takes 4 cycles

    same goes for VMUL..

    Is this really the case…

    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
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