Thank you for replying.

My problem is simulation is not finished.(IPC is very small)
I tried the simulation following simulation environment once again.
I am trying to run the Splash2 in Chip MultiProcessors using SE mode.
I get the Splash2 binary in the following link.
http://www.m5sim.org/dist/m5_benchmarks/v1-splash-alpha.tgz

I try to run SPLASH2 in Detailed 4 CPU cores using default .py file (m5_1.1/m5/configs/splash2/run.py)
But Simulation isn't finished. (IPC is very small, too)
Therefore cause for not finishing the simulation is not "prefetching". I'm sorry for the mistake.

I have no idea what cause this problem.
Could you tell me how to run Splash2 benchmarks correctly?

following line is my comand line message and m5stat.txt

##### comand line messege ######
command line: ./m5.fast -ENP=4 -d output_splash_deffft/ 
../../configs/splash2/run.py -ESYSTEM=Detailed -EBENCHMARK=FFT -EROOTDIR=/hom\
e/fukumoto/m5_1.1/m5-test/splash2/splash2/codes/


warn: Entering event queue.  Starting simulation...


##### m5stat.txt ######
cpu0.COM:IPC                                 0.012835                       # 
Committed instructions per cycle
cpu0.COM:count                              154016099                       # 
Number of instructions committed
cpu0.FETCH:idle_cycles                    11964858470                       # 
number of cycles where fetch stage was idle
cpu0.FETCH:idle_rate                            99.71                       # 
percent of cycles fetch stage was idle
toL2Bus.data_idle_cycles                     39429064                       # 
number of cycles bus was idle
toL2Bus.data_idle_fraction                   0.003286                       # 
fraction of time data bus was idle
cpu1.COM:IPC                                 0.002342                       # 
Committed instructions per cycle
cpu2.COM:IPC                                 0.002343                       # 
Committed instructions per cycle
cpu3.COM:IPC                                 0.002344                       # 
Committed instructions per cycle


Thanks and Best regards,
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