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This section gives an overview of the steps involved in using ecFlow.
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Step 2: Write your task scripts
ecf scripts are text files that correspond to the task in the suite definition. The script defines the main work that is to be carried out. The script includes child commands, special comments, and manual sections that provide information for users.
The child commands are a restricted set of ecflow_client commands that communicate with the ecflow_server. They inform the server when the job has started, completed, aborted, or set some event.
Step 3: Start an ecFlow server
After ecflow_server is started, the suite definition, can then be loaded into it.
- The user then initiates scheduling in the ecflow_server
- scheduling will check dependencies in the suite definition every minute (by default). If these dependencies are free, the server will submit the task. This process is called job creation. The running process corresponding to the task is referred to as a job.
The running jobs will communicate back to the server using child commands. These cause:
Step 4: Interact with the GUI
ecFlow has a specialised specialized GUI client, called ecflow_ui This is used to visualise and monitor:
- The hierarchical structure of the suite definition. (suite, family, task)
- State changes in the nodes and serverservers.
- Attributes of the nodes and any dependencies.
- ecf script file and the expanded job file.
In addition addition, ecflow_ui provides a rich set of ecflow_client commands that can interact with the server.
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| The following tutorial will show examples in plain text and python. However, it is recommended that you use python, since the later tutorial examples use conditionals like ‘if’ and looping constructs. |
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