4090 not support

[cery999]

Please describe the bug

ERROR: test_2_pipeline_parallel (__main__.InstallationTest)                                                                                                                                                                    [0/1927]
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/cery/alpa/alpa/test_install.py", line 33, in test_2_pipeline_parallel
    init(cluster="ray")
  File "/home/cery/alpa/alpa/api.py", line 59, in init
    init_global_cluster(cluster, cluster_address, num_nodes,
  File "/home/cery/alpa/alpa/device_mesh.py", line 2326, in init_global_cluster
    ray.init(address=ray_addr,
  File "/home/cery/anaconda3/envs/py38/lib/python3.8/site-packages/ray/_private/client_mode_hook.py", line 105, in wrapper
    return func(*args, **kwargs)
  File "/home/cery/anaconda3/envs/py38/lib/python3.8/site-packages/ray/_private/worker.py", line 1339, in init
    bootstrap_address = services.canonicalize_bootstrap_address(address, _temp_dir)
  File "/home/cery/anaconda3/envs/py38/lib/python3.8/site-packages/ray/_private/services.py", line 450, in canonicalize_bootstrap_address
    addr = get_ray_address_from_environment(addr, temp_dir)
  File "/home/cery/anaconda3/envs/py38/lib/python3.8/site-packages/ray/_private/services.py", line 341, in get_ray_address_from_environment
    raise ConnectionError(
ConnectionError: Could not find any running Ray instance. Please specify the one to connect to by setting `--address` flag or `RAY_ADDRESS` environment variable.

Please describe the expected behavior

System information and environment

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04, docker): linux
• Python version:3.8.10
• CUDA version:11.3
• NCCL version:2.6.1
• cupy version:cupy-11x
• GPU model and memory: 4090 24G
• Alpa version: 0.2.3
• TensorFlow version:
• JAX version: 3.2.2

To Reproduce Steps to reproduce the behavior:

1. do pyhon3 -m alpa.test_install
4. See error

Screenshots If applicable, add screenshots to help explain your problem.

Code snippet to reproduce the problem

Additional information Add any other context about the problem here or include any logs that would be helpful to diagnose the problem.

[ZYHowell]

According to the error message, it seems like you didn't launch ray(use ray start --head on the head node)