Hi all,
A number of the spec2000 benchmarks have a problem during the resumption
of a checkpoint. The problem is that the checkpoint resumes fine in
O3CPU model (the checkpoint was made in AtomicSimpleCPU model), but it
only simulates a fraction of the interval that it was supposed to. M5
spits out the message "Exiting @ cycle <some number> because simulate()
limit reached." However, if I resume the benchmarks in the
AtomicSimpleCPU model, then they work.
It seems like the cpu O3 model is getting stalled and the simulation
tick fastforwards to its limit. If I resume simulation in
AtomicSimpleCPU then all is well. Any ideas of what is going on? If you
want an example, take a checkpoint of ammp at 59*100E6 instructions (or
at curTick=2,981,099,451,500) and resume that checkpoint to run for
100E6 instructions. The simulation will end after 248,483 instructions
have been simulated.
This seems to be the last big issue in getting everything working for
spec2000 checkpoints. Any help is appreciated ... ^_^.
-Richard
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