To join the flood.. you use this instructions to setup in ubuntu
https://github.com/cryptonomex/graphene/wiki/How-to-setup-your-witness-for-test-net-(Ubuntu-14.04)
Once ready you can use xerocs python script for flooding. Instructions:
Open screen
screen
Run cli wallet with -H 127.0.0.1:8092
./cli_wallet -w test_wallet --chain-id ecbde738ba0b319cb4d266e613b200d010da8b37313c20aec03f9c8e2d9b35e3 -H 127.0.0.1:8092
unlock your walletDetach screen
Ctr A Ctr D
Install python dependencies
sudo apt-get install python3-setuptools
sudo easy_install3 pip
sudo pip3 install autobahn
sudo pip3 install requests
Clone and build python graphene api
cd ~
git clone https://github.com/xeroc/python-graphenelib.git
cd python*
python3 setup.py install --user
Edit the flood script to configure your user
cd examples
nano flood.py
edit client.transfer("putyouruserhere
exit save
Run the flood script
python3 flood.py