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Since you haven't requested data generation on the server here is the bash script that may help you generate data on your own machine. You may only request data generation on the server if you are logged in.
Your request to generate data has been submitted successfully. You will get an e-mail with information on how to download the file when it's ready. On your personal page you can always check the status of the previously submitted jobs and find links to generated datasets. For your reference you might want to get a copy of a script used to generate the data.