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Training loop terminates after few episodes

See original GitHub issue

High-Level Description Training loop termination in UTLRA

Desired SMARTS version 0.4.16

Operating System ubuntu 18.04

Problems while training for multi-agents in ULTRA, sometimes the loop terminate after few episodes, giving the following error:

Exception ignored in: <function _ChannelCallState.__del__ at 0x7f0824052b00>
Traceback (most recent call last):
  File "/home/dikshant/github/SMARTS/ultra/.VENV/lib/python3.7/site-packages/grpc/_channel.py", line 1126, in __del__
AttributeError: 'NoneType' object has no attribute 'cancelled'
Exception ignored in: <function _ChannelCallState.__del__ at 0x7f0824052b00>

a somewhat related issue is mentioned on the official github repo of grpc as well: https://github.com/grpc/grpc/issues/23290

Issue Analytics

State:
Created 2 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

christianjanscommented, Jun 29, 2021

This error is a result of the changes in #704 and occurs because the SMARTS version that we currently use in ULTRA has a GRPC version with this error. When ULTRA updates its SMARTS dependency to a newer version that has a newer GRPC dependency, this error will not appear anymore.

0reactions

Dikshuycommented, Jul 1, 2021

oh yeah, I just saw that it is due to only 10 training episodes and when they are over, it shows this error. Is there any way to remove this error (maybe it can be a later fix you want to do).

thanks, @christianjans, closing this issue for time being but feel free to add more comments if you have sth in mind.