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The Idea
Experiment Design
Step 1: Choose the application that you want to run on the WiMAX nodes (or create a new one)
In this case, we will run two applications: a sensor application that collects measurements from temperature, humidity, and light sensors attached to the node, and a wmxstat application that collects measurements about the state of the WiMAX link.
Both of these applications are Ruby scripts.
Step 2: If you've written your own application, instrument it with OML so that you can collect measurements from it during experiment runtime
These applications were instrumented with the oml4r Ruby client library.
OML client libraries are also available for Python and C or C++.
Experiment Deployment
Step 3: Create a disk image with your applications installed
Log onto a testbed and load a baseline disk image onto a node:
omf load -i baseline-witest.ndz -t omf.witest.node1
Log onto the node (ssh root@node1) and install your applications and any required files.
Then save your disk image:
omf save -n omf.witest.node1
This can take a while, so we've already created a disk image for use in this tutorial. It's called gec15sensor.ndz
You can load this disk image onto any number of nodes, e.g.:
omf load -i gec15sensor.ndz -t omf.witest.node1,omf.witest.node2,omf.witest.node3,omf.witest.node4,omf.witest.node5,omf.witest.node6,omf.witest.node7
