I’m wondering if it’s possible for Prefect to run the same Flow at the same time with different Parameters? Let’s say i have a flow call Balance and i want to run two or more instances at the same time but with different input Parameters, is that possible?

Yep see this. It just doesnt scale to more than 10

oh awesome! I’ll go read up on it. Thanks for the info

Yes exactly. At that point, just make a new Flow with new default parameters

Okay awesome, is there any plans for the future to remove that limit?

Note this limit is for schedules with varying parameters, you can create as many flow runs as you want that have different parameters

No plan. It’s the way the scheduler works that it scheduled the next 10 flow runs so if you have 13 varying parameters, 3 of them don’t get scheduled for a given flow

For example, without a schedule you can create arbitrary parallel flow runs with different parameters

parallel --jobs 30 prefect run --name "hello-world" --project "example" --execute --param "hello={}" ::: {1..30}

Okay, just so i understand correctly. If my flow has 12 tasks and it takes 5 parameters. One of those is host / server. The flow is generic and does stuff based on the host parameter. We can start an unlimited amount of this flow in parallel just by giving different parameters correct?

Yes

Is it possible to do that by simply calling

flow.run()

Or do you ahve to do it via the cli?

I think you need a backend to run multiple runs concurrently.

flow.run()

is not intended for production use cases

What is intended for production use cases then? How do you send the flow off to get run?

You register it against prefect cloud and run it with an agent yep

Does flow.run not respect the run_config that’s set on it? Or another way to ask is, does flow.run just run locally always??

Yes flow.run does not respect runconfig and storage

We are using the helm chart currently in a k8s cluster. We aren’t using the Prefect Cloud currently. Is the only way to start or schedule a job through the UI?? There’s no programmatic way to do it?

prefect run

will schedule a run if you exclude the

--execute

flag

Okay sounds good. Is there documentation on how to initiate a flow run via the API?

Oh awesome! Does

create_flow_run(

return immediately or after the flow has started?

Immediately

Oh that’s incredible news.