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In eppy, idf.run() will run on any machine that has eppy installed and E+ installed.

Service like Heroku (Platform as a service) generally will NOT allow you to install E+

Considering this limitation, my solution has been to:

1. Run the web server on Heroku (or something similar).
2. Install and run E+ on a separate machine on AWS or linode.com (call it the E+Machine)
3. The Webserver sends the input files over the internet to the E+Machine to be simulated
4. Once the simulation is complete, the E+Machine sends the results back to the web server that does something with the results

You can run everthing on a single machine on ASW or linode.com - both webserver and simulation. You lose the ease of deployment that "Platform as a service" Heroku gives you. But it makes everything else simpler, as you don't have to deal with the communication betwen two machines.

In eppy, idf.run() will run on any machine that has eppy installed and E+ installed.

Service like Heroku (Platform as a service) generally will NOT allow you to install E+

Considering this limitation, my solution has been to:

1. Run the web server on Heroku (or something similar).
2. Install and run E+ on a separate machine on AWS or linode.com (call it the E+Machine)
3. The Webserver sends the input files over the internet to the E+Machine to be simulated
4. Once the simulation is complete, the E+Machine sends the results back to the web server that does something with the results

You can run everthing on a single machine on ASW or linode.com - both webserver and simulation. You lose the ease of deployment that "Platform as a service" Heroku gives you. But it makes everything else simpler, as you don't have to deal with the communication betwen two machines.