[Windows] Windows init() fails, Video Controller

[jaxnb]

What happened + What you expected to happen

The _autodetect_num_gpus() function in resource_spec.py on Windows calls the command: WMICPATH Win32_VideoController GET AdapterCompatibility. However, this command (at least on my virtualized qemu windows) returns an error.
My system has 1x NVIDIA GTX 970 using passthrough, although I'm not attempting to use it so I personally am not too concerned with that usecase being supported. However, Ray should initialize without error even if a GPU is not detected.

Python 3.11.4 (tags/v3.11.4:d2340ef, Jun  7 2023, 05:45:37) [MSC v.1934 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import ray
>>> ray.init()
ERROR:
Description = Not found
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "...\Python311\Lib\site-packages\ray\_private\client_mode_hook.py", line 103, in wrapper
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\site-packages\ray\_private\worker.py", line 1514, in init
    _global_node = ray._private.node.Node(
                   ^^^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\site-packages\ray\_private\node.py", line 290, in __init__
    self.start_ray_processes()
  File "...\Python311\Lib\site-packages\ray\_private\node.py", line 1214, in start_ray_processes
    resource_spec = self.get_resource_spec()
  File "...\Python311\Lib\site-packages\ray\_private\node.py", line 468, in get_resource_spec
    ).resolve(is_head=self.head, node_ip_address=self.node_ip_address)
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\site-packages\ray\_private\resource_spec.py", line 186, in resolve
    num_gpus = _autodetect_num_gpus()
               ^^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\site-packages\ray\_private\resource_spec.py", line 298, in _autodetect_num_gpus
    lines = subprocess.check_output(cmdargs).splitlines()[1:]
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\subprocess.py", line 466, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "...\Python311\Lib\subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['WMIC', 'PATH', 'Win32_VideoController', 'GET', 'AdapterCompatibility']' returned non-zero exit status 2147749890.

PS> WIMC PATH Win32_VideoController GET AdapterCompatibility
ERROR:
Description = Not found
PS> $LASTEXITCODE
-2147217406

Versions / Dependencies

Python 3.11
Ray 2.6.2
Windows 10 (virtualized)

Reproduction script

import ray
ray.init()

Note: likely system dependent

Issue Severity

High: It blocks me from completing my task.

[anyscalesam]

@mattip can you please take a look?

[mattip]

I think this would be solved by using gpustat everywhere ray wants to find gpu resources. See PR #35581.

[mattip]

For now, I think you can pip install GPUtil

[mattip]

@jaxnb did installing GPUtil help?

[mattip]

I will close this, the need for GPutil has been removed and the detection code refactored. Please open a new issue if this reappears.