Hello, I am using gem5 for x86 with Ruby (MESI protocol) in SE mode. According to the number of accesses to the L1 instruction cache, the number of instructions running the simulation with --cpu-type=timing is ~6500000 while using --cpu-type=detailed, it's only ~1700000. I also ran the same program using cachegrind and I have ~4500000 instruction references.
Could someone help me to understand what causes such a difference between the cpu models and the results given by cachegrind? Thank you. Best regards, Maxime.
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