Giza on Cassandra

Running Tests

1. Set up CloudLab experiment using cloudconfig.py. The script allocates the desired number of nodes and creates links connecting them all to a LAN, and also sets the latency of each link, to simulate cross-DC latency. The latency will be set when configuring an experiment with the profile, and cannot be changed unless you create a new experiment. It is set to use a pre-created image with Cassandra installed to reduce setup time.
2. Edit servers.txt with the SSHs command provided by CloudLab, separated by a new line.
3. On your local machine, run sync.sh to copy the repository code to each of the machines.
4. On your local machine, run python shell.py to launch a tmux session with SSH connections to each of the machines.
   • shell.py provides an easy way to send keystrokes to all of the machines at once.
   • If you are using shell.py, all the following commands are to be run on your local machine.
   • Alternatively, you can manually launch SSH connections to each of the machines, and run the commands after python shell.py send on each of them while in the ~/giza directory, replacing [i] with the number of the machine (1 for node1 on CloudLab, 2 for node2, etc.). Where it says 'Enter', simply press the enter key.

Giza Without Contention Tests

1. Run python shell.py send './setup_giza.sh [i]' 'Enter' to set up Cassandra on each machine for the Giza tests.
2. Run python shell.py send './build.sh' 'Enter' to build Giza on each of the machines.
3. Run python shell.py send './giza -maddr 192.168.1.1 -n 5 -addr 192.168.1.[i] -o 128 -T 1' to type the test command into each of the tmux panes.

Giza With Contention Tests

1. Run python shell.py send './setup_giza.sh [i]' 'Enter' to set up Cassandra on each machine for the Giza tests.
2. Run python shell.py send './build.sh' 'Enter' to build Giza on each of the machines.
3. Run python shell.py send './giza -maddr 192.168.1.1 -n 5 -addr 192.168.1.[i] -o 1 -T 1' to type the test command into each of the tmux panes.

Cassandra Tests

1. Run python shell.py send './setup_cassandra.sh [i]' 'Enter' to set up Cassandra on each machine for the Cassandra tests.
2. Run python shell.py send './build.sh' 'Enter' to build Giza on each of the machines.
3. Run python shell.py send './giza -maddr 192.168.1.1 -m cassandra -addr 192.168.1.[i] -o 128 -T 1' to type the test command into each of the tmux panes.

Finally

1. Press the enter key in node1 (which should be the top left tmux pane), to start the master instance first.
2. Once the master is ready, run python shell.py send 'Enter' to start all the other instances.
3. To end the tests, run python shell.py send 'C-c' to send the ctrl+c interrupt on all machines.
4. To end the tmux session, run python shell.py send 'exit' 'Enter' 'exit' 'Enter'.
5. Copy the latest directory in results/ and run copy.sh to copy all the latency outputs.

Plotting

Run python plotFigs/plot_figs.py. The plots will be generated in plotFigs/plots/.