ray.util.placement_group.PlacementGroup.ready

PlacementGroup.ready() → ray._raylet.ObjectRef

Returns an ObjectRef to check ready status.

This API runs a small dummy task to wait for placement group creation. It is compatible to ray.get and ray.wait.

Example

import ray

pg = ray.util.placement_group([{"CPU": 1}])
ray.get(pg.ready())

pg = ray.util.placement_group([{"CPU": 1}])
ray.wait([pg.ready()])