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töz00's avatar
töz00
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5 years ago

changing C code run time with changing variable name in NIOS Eclipse

Hello dear Intel,

I really appriciate for your precios helps.

I want to ask a question about NIOS Eclipse C code running.

For example, i run a line about sinus calculation (e.g." a = sin(x);" )

let's say its working time is 10 ms. This time is changing when i change the variable name, like a11 instead of a. with name 'a', code run 10 ms, with name 'a11', code run 8 ms. So what does affect that time?

4 Replies

  • EricMunYew_C_Intel's avatar
    EricMunYew_C_Intel
    Icon for Frequent Contributor rankFrequent Contributor
    5 years ago

    Hi, Taha

    It depends on where you store the variable, the run time may be longer for external RAM, and shorter for internal RAM.

    Also, a long int type may take longer run time than int.

    As long as the variable follows the naming rule, it shouldn't affect the run time.

    Thanks.

    Eric

    • töz00's avatar
      töz00
      Icon for New Contributor rankNew Contributor
      5 years ago

      thanks for replying sir,

      i have a system that include 2 nios processor which are connected the same sdram memory (assigning spesific address range) and a dual port internal ram for transferring data (for the data communication) . i am writing a data from 1st nios to 2nd nios. for1st nios to 2nd nios, if i assign an int variable with name a, data sending run time is 10 ms. if i name it 'a11' sending run time is being 8 ms. so i am writing the data on the same ram address with different name and run time is chaging like this.