Windows debugging on gdb does not work

[juliusfrost]

What is the problem?

https://docs.ray.io/en/master/debugging.html?highlight=debugging#debugging The tutorial on debugging in ray says you can set the environment variables RAY_RAYLET_GDB=1 RAY_RAYLET_TMUX=1 to make ray work with gdb. However, you cannot debug on Windows because it is assumed tmux is installed, which is not available.

Reproduction (REQUIRED)

Please provide a script that can be run to reproduce the issue. The script should have no external library dependencies (i.e., use fake or mock data / environments):

• Use environment variables RAY_RAYLET_GDB=1 RAY_RAYLET_TMUX=1 and run any ray script on Windows.

If we cannot run your script, we cannot fix your issue.

• [x] I have verified my script runs in a clean environment and reproduces the issue.
• [x] I have verified the issue also occurs with the latest wheels.

Related: #9114

[richardliaw]

cc @mehrdadn ?

[mehrdadn]

We definitely haven't yet added GDB or tmux support for Ray on Windows, but would installing tmux possibly help with this? I haven't tried this, but MSYS2 should have tmux available.