gem5 - X86 DerivO3CPU CPI Issue

Question

I used two_levels.py (The script for tutorial) to run a simulation with DerivO3CPU model. The simulation result shows the CPI value (cycles per instruction) is lower than 1. I don't think that makes sense to a single-core system.

The only two things I modified in that script are the CPU type (TimingSimpleCPU -> DerivO3CPU) and the program running (HelloWorld -> A benchmark program).

Did I make the wrong setup for DerivO3CPU or I misunderstand the CPI?

Thank you very much for your help!

question from:https://stackoverflow.com/questions/66065922/x86-derivo3cpu-cpi-issue

Answer 1

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