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why IUS so sloooooow ?

duckfly

I tried the same OVM based testbench on IUS8.2-S012 and VCS0906 , and there is an amazing performance contrast !

VCS is 7X more faster than IUS !

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  • Hi,Tim,
     
        Oh, I'm a IUS/OVM fans .. and cadence's native support see this issue , but can't give me any suggestion . I doubt it's the random engine slow down the simulation .
        The whole testbench is so big , and I can't give an example , if you consider this is important, I can do something to help your FAE find out the reason .
     
    Regards,
    Yang YiFeng
Reply
  • Hi,Tim,
     
        Oh, I'm a IUS/OVM fans .. and cadence's native support see this issue , but can't give me any suggestion . I doubt it's the random engine slow down the simulation .
        The whole testbench is so big , and I can't give an example , if you consider this is important, I can do something to help your FAE find out the reason .
     
    Regards,
    Yang YiFeng
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