Predefined vs Custom Machine types
I've recently updated to Cromwell 34 with the v2alpha pipelines API and I now see that all of my tasks are being submitted as custom machine types.
For example, I recently ran a workflow where one of my tasks requests 16 cores and 15GB of RAM. This resulted in a custom machine type with 16 cores and 14848 MiB of RAM when it could/should have easily been an n1-highcpu-16 type. In fact, I have yet to observe a predefined machine type being spawned since I updated.
Is this expected behavior? If I'd like to spawn tasks using the predefined types, what would I need to do?