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39 lines
1.6 KiB
Markdown
39 lines
1.6 KiB
Markdown
---
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title: Subprocess
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---
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The [subprocess_example.py](https://github.com/allegroai/clearml/blob/master/examples/distributed/subprocess_example.py)
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script demonstrates multiple subprocesses interacting and reporting to a main Task. The following happens in the script:
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* This script initializes a main Task and spawns subprocesses, each for an instances of that Task.
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* Each Task in a subprocess references the main Task by calling [`Task.current_task()`](../../references/sdk/task.md#taskcurrent_task),
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which always returns the main Task.
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* The Task in each subprocess reports the following to the main Task:
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* Hyperparameters - Additional, different hyperparameters.
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* Console - Text logged to the console as the Task in each subprocess executes.
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* When the script runs, it creates a task named `Popen example` in the `examples` project.
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## Hyperparameters
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ClearML automatically logs the command line options defined with `argparse`. A parameter dictionary is logged by
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connecting it to the Task using [`Task.connect()`](../../references/sdk/task.md#connect).
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```python
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additional_parameters = {
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'stuff_' + str(randint(0, 100)): 'some stuff ' + str(randint(0, 100))
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}
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Task.current_task().connect(additional_parameters)
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```
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Command line options appear in **CONFIGURATION** **>** **HYPERPARAMETERS** **>** **Args**.
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Parameter dictionaries appear in **General**.
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## Console
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Output to the console, including the text messages from the Task in each subprocess, appear in **CONSOLE**.
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