gem5 Simulator System. http://gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 compiled Jul 8 2015 14:45:30 gem5 started Jul 8 2015 14:46:17 gem5 executing on galapagos-15.cs.wisc.edu command line: build/ALPHA/gem5.opt -d build/ALPHA/tests/opt/quick/se/03.learning-gem5/alpha/linux/learning-gem5-p1-two-level -re /afs/cs.wisc.edu/p/multifacet/users/powerjg/gem5-tutorial/gem5/tests/run.py build/ALPHA/tests/opt/quick/se/03.learning-gem5/alpha/linux/learning-gem5-p1-two-level Global frequency set at 1000000000000 ticks per second Beginning simulation! info: Entering event queue @ 0. Starting simulation... info: Increasing stack size by one page. Hello world! Exiting @ tick 61608000 because target called exit()