After finishing calculate and setting your irradiance map, please save that file and upload it along with your project folder to Super Renders Farm.
From Render Dashboard -> click on your scene file -> Start Analyze.
When the analysis job completes, you can start the render job from this page.
In order to render with pre-calculated irradiance map, from Scene Params scroll down to Vray Options, look for Irradiance Map and follow steps below:
1. Mode: From file
2. Browse file -> Choose your project -> Click the irradiance map file
After this step, your project is ready, all you need to do is pressing the "Start Render Job" button and wait for the final render output.