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Measuring performance of programs on the FVP

Is the FVP accurate in terms of measuring performance of programs? Is it cycle accurate? If I use clock_gettime to measure time taken on applications, is it meaningful? If not, is there an accurate way to measure performance of programs on the FVP?

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Ronan Synnott over 4 years ago +1 verified

Hi Mohannad, FVPs, and Fast Models in general, are functionally accurate, meaning that they fully execute all instructions correctly, however they are not cycle accurate (a separate technolgy, Cycle Models...
Ronan Synnott over 3 years ago in reply to eltro +1

Hi Eltro, I would not rely on the Fast Model for that level of accuracy. You may see that one implementation is 'better' than the other, but I would not rely on 'how much better', for exactly reasons like...

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0 Mohannad Ismail over 4 years ago in reply to Ronan Synnott

Oh I see. Thanks for the clarification!
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0 Mohannad Ismail over 4 years ago in reply to Ronan Synnott

Oh I see. Thanks for the clarification!
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