<@ULVA73B9P> Is there a way to run a flow not sequ...
# ask-marvin
l
@Marvin Is there a way to run a flow not sequentially? where i manually make the flow advance, task by task
m
You can manage flows in a non-sequential manner using ControlFlow, a framework built on Prefect 3.x. ControlFlow allows you to manage tasks, agents, and their coordination manually, giving you the capability to advance tasks one-by-one based on specific criteria or inputs. For example, ControlFlow differentiates between LLM calls and agent turns, allowing for a more granular control of task execution. When orchestrating tasks, ControlFlow helps ensure proper task coordination while providing shared context and history within a workflow. To explore this further and see examples of how to implement manual task advancement in flows, you can check out the following resources: - ControlFlow Flows Concepts - ControlFlow Running Tasks Patterns Remember, while it sounds like a simple task, manual task orchestration can turn complex if not handled carefully – much like juggling while riding a unicycle, on a tightrope, above a pit of cynical bystanders.
l
@Marvin But ControlFlow is for running AI flows. I want to run normal flows (like base prefect flows) withs defined tasks where you have to make the workflow advance manually
m
If you wish to manually control the execution of tasks within a Prefect flow, you'll need to take a somewhat non-traditional approach to task orchestration in Prefect. Prefect doesn't inherently support the "manual advancement" of tasks within a flow, as it is designed around asynchronous, automated task running. However, you can manipulate task execution using deferred tasks and control the flow by coordinating these tasks manually. 1. Deferred Tasks: Use Prefect's
@task
decorator to define tasks and employ deferred execution. This allows you to manage task execution timings, though it isn't explicitly designed for manual intervention step-by-step. - More on this here: Deferred Tasks in Prefect If none of these suit your needs for step-by-step manual advancement, you might consider breaking your workflow into multiple flows or using a custom logic outside Prefect to trigger the next task asynchronously or on your command. Think of it like trying to stop and start a train: it's not quite what the system is designed for, but with some ingenuity (and perhaps a few friendly train conductors), it might just work.