Redirecting stdout to build/MIPS/tests/opt/quick/se/00.hello/mips/linux/simple-timing-ruby/simout Redirecting stderr to build/MIPS/tests/opt/quick/se/00.hello/mips/linux/simple-timing-ruby/simerr gem5 Simulator System. http://gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 compiled Mar 14 2016 22:04:10 gem5 started Mar 14 2016 22:06:34 gem5 executing on phenom, pid 29860 command line: build/MIPS/gem5.opt -d build/MIPS/tests/opt/quick/se/00.hello/mips/linux/simple-timing-ruby -re /home/stever/hg/m5sim.org/gem5/tests/run.py build/MIPS/tests/opt/quick/se/00.hello/mips/linux/simple-timing-ruby Global frequency set at 1000000000 ticks per second info: Entering event queue @ 0. Starting simulation... info: Increasing stack size by one page. Hello World! Exiting @ tick 100232 because target called exit()