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 20:43:46
gem5 executing on zizzer, pid 10133
command line: build/X86/gem5.opt -d build/X86/tests/opt/quick/se/00.hello/x86/linux/simple-atomic -re /z/atgutier/gem5/gem5/tests/run.py build/X86/tests/opt/quick/se/00.hello/x86/linux/simple-atomic

Global frequency set at 1000000000000 ticks per second
info: Entering event queue @ 0.  Starting simulation...
Hello world!
Exiting @ tick 5615000 because target called exit()