安裝 Ray 與相關套件

1. 安裝 Python & pip

   • sudo apt install python3 python3-pip
   • sudo apt install python-is-python3

2. 安裝 Ray

   • pip install ray[default]

     $ pip show ray
     
     Name: ray
     Version: 2.7.0
     Summary: Ray provides a simple, universal API for building distributed applications.
     Home-page: https://github.com/ray-project/ray
     Author: Ray Team
     Author-email: ray-dev@googlegroups.com
     License: Apache 2.0
     Location: /home/jimmyliao/.local/lib/python3.10/site-packages
     Requires: aiosignal, click, filelock, frozenlist, jsonschema, msgpack, numpy, packaging, protobuf, pyyaml, requests
     Required-by:     
     

測試 Ray

1. 建立 Ray head node

   • ray start --head

     $ ray start --head
     Enable usage stats collection? This prompt will auto-proceed in 10 seconds to avoid blocking cluster startup. Confirm [Y/n]: y
     Usage stats collection is enabled. To disable this, add `--disable-usage-stats` to the command that starts the cluster, or run the following command: `ray disable-usage-stats` before starting the cluster. See https://docs.ray.io/en/master/cluster/usage-stats.html for more details.
     
     Local node IP: 10.0.0.14
     
     --------------------
     Ray runtime started.
     --------------------
     
     Next steps
     To add another node to this Ray cluster, run
         ray start --address='10.0.0.14:6379'
     
     

2. 建立測試程式

   • test.py

     import ray
     ray.init(address='auto')
     @ray.remote
     def f():
         return 1
     f.remote()
     

3. 執行測試程式

   • python test.py

   2023-10-05 15:31:34,673	INFO worker.py:1458 -- Connecting to existing Ray cluster at address: 10.0.0.14:6379...
   2023-10-05 15:31:34,684	INFO worker.py:1633 -- Connected to Ray cluster. View the dashboard at 127.0.0.1:8265
   

4. 查看結果

   • ray dashboard

     

     

5. 停止 Ray head node

   • ray stop

Reference:

• https://docs.ray.io/en/latest/cluster/getting-started.html