The code example is very similar to Ray.

Monarch:

  class Example(Actor):
     @endpoint
     def say_hello(self, txt):
         return f"hello {txt}"

  procs = this_host().spawn_procs({"gpus": 8})
  actors = procs.spawn("actors", Example)
  hello_future = actors.say_hello.call("world")
  hello_future.get()

Ray:

  @ray.remote(num_gpus=1)
  class Example:
      def say_hello(self, txt):
          return f"hello {txt}"

  actors = [Example.remote() for _ in range(8)]
  hello_object_refs = [a.say_hello.remote("world") for a in actors]
  ray.get(hello_object_refs)