You can run this by installing Loads using the Makefile:
$ make build
If you get any dependency issue, you might need to install libraries on your system. Check out http://loads.readthedocs.org/en/latest/installation
Next, you can run a single test against the Push server:
$ make test
And once it works, send some real load:
$ make load
Look at loads.ini to tweak the options for make load.