New User coming from Dyno - When does Relay open Dynamo?

[Tyree]

Long time Dyno user here. With the onset of Revit 2025 and the lack of development on Dyno, I'm starting the search for alternatives.

Prior to Dyno, I tried pyRevit. But it seemed very slow by comparison, which leads me to think it opened Dynamo in the background each time a dyn script was run. It also had issues with seeming to run scripts more than once or leave them open. We had weird issues, like when using DataShapes UI, forms would pop up again after the script should have been finished. This didn't happen running the script via Dynamo or with Dyno.

All that to ask... How does Relay work? Does it open a single Dynamo host session as Revit starts the way Dyno does? Or does it open Dynamo each time a dyn script is called like pyRevit?

Thanks!!!

[johnpierson]

At this time, it launches a fresh Dynamo run with each button click.