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slaviuspan
slaviuspan
Associate
October 4, 2016
Question

Measuring compiler performance

  • October 4, 2016
  • 4 replies
  • 978 views
Posted on October 04, 2016 at 13:57

Hello. Can you help me to measure perfomance of 3 compilers; Keil, IAR and SW4STM32. For example, using the Dhrystone or other benchmark. I use STM32F4-DISCOVERY with stm32f407vg. 

P.S.

I'm a newbie) Sorre for my English.

#!stm32f4-!stm32f407vg
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    4 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    October 4, 2016
    Posted on October 04, 2016 at 18:16

    Ok, so can you configure a TIM and observe the count across the code you want to benchmark, or use the DWT_CYCCNT to count processor cycles?

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    slaviuspan
    slaviuspanAuthor
    Associate
    October 5, 2016
    Posted on October 05, 2016 at 13:22

    I have a Dhrystone benchmark projecy for8 But I don't understand how it works. I need something similar for STM32F407VG

    ________________

    Attachments :

    DHRY.rar : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HtmB&d=%2Fa%2F0X0000000aWl%2FktlZJ.aDH_vVOzc5LMCXVreYMfZIYEhM9Z_pf8s4Ct8&asPdf=false
    Tesla DeLorean
    Tesla DeLorean
    Guru
    October 5, 2016
    Posted on October 05, 2016 at 22:32

    But I don't understand how it works.

    That would seem to devalue the usefulness of doing the test rather a lot...

    http://infocenter.arm.com/help/topic/com.arm.doc.dai0273a/DAI0273A_dhrystone_benchmarking.pdf

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    Tesla DeLorean
    Tesla DeLorean
    Guru
    October 20, 2016
    Posted on October 20, 2016 at 20:18

    Keil, Level 3, Optimize for Time

    STM32F4-DISCO Running at 192 MHz,

    Microseconds for one run through Dhrystone:    2.8 

    Dhrystones per Second:                      357995.2 

    STM32F4-DISCO Running at 168 MHz,

    Microseconds for one run through Dhrystone:    3.2 

    Dhrystones per Second:                      313479.6 

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