How severe does this issue affect your experience of using Ray?
- High: It blocks me to complete my task.
Using Jupyter notebooks I have a Python function that works fine on it’s own, but when I use an @ray.remote decorator and try to use function.remote(parameters) it provides no console output and does not update a file I’m appending to.
The following example is similar to the rather large notebook that I am trying to get working. This example does not provide console output but DOES create the expected file, unlike my larger notebook:
import ray
import datetime
ray.init(ignore_reinit_error=True)
def logger(text):
""" Write text to a log """
now = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
with open("scheduler_log.txt", "a+") as fh:
fh.write(f"{now}\n")
fh.write(f"{text}\n\n")
return text
@ray.remote
def test(x):
print(x)
logger(x)
logger("Starting")
jobs=[]
for x in ["A","B","C","D"]:
jobs.append(test.remote(x))
When a function is run remotely, is there a chance that it is run in a different ray instance and thus not create the file where I expect it to be? How about console output… is there a method to ensure that console output appears?
The function that I am trying to run remotely works fine stand alone, so I’m trying to figure out why it doesn’t appear to work as a ray.remote function. If there is an error, it does not appear on my console. In my function I try to log output to a file, but the file is never updated on my filesystem.
How can I debug my ray.remote function?
Apologies if this sounds a bit confusing as I’m pretty new to using Ray.