changesets:10880:bb718472abc3

tests: scripts for taking checkpoint and a simple test for pd-gem5
Please follow these steps to start a simple experiment with pd-gem5:
1- Apply pd-gem5 patch http://reviews.gem5.org/r/2914/

(first apply dependent patch chain) to a newly downloaded gem5, then

 apply this patch
2- Compile gem5
3- Download http://www.gem5.org/dist/current/arm/aarch-system-2014-10.tar.xz 

 and extract it under your gem5 directory
4- Modify these two lines in util/pd_gem5/pd-gem5.conf:
pd-gem5_dir= <set it to your gem5 directory>

   other_command_line_options= --disk-image=<path to "aarch32-ubuntu-natty-headless.img">
5- Lanuch simulation using the script under util/pd_gem5/pd-gem5.py:

   python pd-gem5.py pd-gem5.conf
6- Wait till pd-gem5 boot linux on all nodes and take checkpoint (~30min).

 You will see this message at the end of simulation :

 "gem5 process simulating *** is finished/killed."
7- Modify these two lines in util/pd_gem5/pd-gem5.conf to restore from the

 newly taken checkpoint and run a simple ping test:
script_dir=TEST
other_command_line_options= --disk-image=<path to "aarch32-ubuntu-natty-headless.img"> --checkpoint-restore=1

8- run pd-gem5 again to restore from the checkpoint and run ping test:

   python pd-gem5.py pd-gem5.conf
9- check $pd-gem5_dir/rundir/TEST/tux0/m5out/system.terminal