[gem5-users] How to make scheduleInstStop() function to stop simulate at an accurate expected instructions counts for one core KVM/ATOMIC/O3 CPU simulation?

[Liyichao via gem5-users]

Hi All:


I use the scheduleInstStop() function to let the m5.simulate() stop at a point 
instrutions as my ROI start, for example: 100000000(100M) instrutions, but when 
the simulate stop, I print the instructions from last start simulation to the 
end, the count always exceed my specified instrutions(100M), like 100423403, 
about 0.4% exceeded. If I set to 137579444 in O3 cpu, when simulation stop, 
totalInsts() print 121264766,about 12% instruction number error.



The more detail the CPU is or the less expected instruction we set to 
scheduleInstStop() , the more error rate the result is.

Can the scheduleInstStop() function to stop simulate at an accurate instrutions 
count?




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