gem5 Simulator System.  http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.

gem5 compiled Dec 11 2015 20:42:59
gem5 started Dec 11 2015 20:43:47
gem5 executing on zizzer, pid 10146
command line: build/X86/gem5.opt -d build/X86/tests/opt/quick/se/03.learning-gem5/x86/linux/learning-gem5-p1-two-level -re /z/atgutier/gem5/gem5/tests/run.py build/X86/tests/opt/quick/se/03.learning-gem5/x86/linux/learning-gem5-p1-two-level

Global frequency set at 1000000000000 ticks per second
Beginning simulation!
info: Entering event queue @ 0.  Starting simulation...
Hello world!
Exiting @ tick 55844000 because target called exit()