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So I have a Fargate ECS cluster, but when I try to scale up the cpu count with ECSRun() I get: `[14 April 2022 2:14pm]: An error occurred (InvalidParameterException) when calling the RunTask operation: No Fargate configuration exists for given values.`.  The weird thing is that 4096 appears to be a valid entry: <https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-cpu-memory-error.html>.  Is it possible I screwed up the definition of my fargate
 cluster?

Can I see the `ECSRun` you have? How do you know this refers to the 4096?

```ecs_run = ECSRun(
    labels=["prod"],
    run_task_kwargs={"cluster": "{edited}-prod-platform-prefect"},
    execution_role_arn="arn:aws:iam::{edited}:role/ecsTaskExecutionRole",
    task_role_arn="arn:aws:iam::{edited}:role/prefectTaskRole",
    cpu=4096,
)```

Oh interesting.  Memory must be explicitly set within the range, Kevin.  So if memory=None, it must go for the lowest amount which isn't a valid execution for FARGATE.

yeah was about to say it’s using the default memory specified by Prefect <https://github.com/PrefectHQ/prefect/blob/master/src/prefect/agent/ecs/task_definition.yaml#L3|here>

Thanks again. I think I'm getting a handle on how Prefect works, architecturally, finally.