> ## Documentation Index
> Fetch the complete documentation index at: https://training-docs.cerebras.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom Pt Training Script Spawns Multiple Compile Jobs

## Observed Error

Custom PyTorch training/evaluation script spawns multiple compile jobs (or custom PyTorch script recursively executing itself in infinite loop).

## Explanation

The main reason why this happens is that the Python script is not guarded with an **if \_\_name\_\_ == “\_\_main\_\_”** section. In various places during execution, subprocesses are spun off (e.g., weight transfer, creating surrogate jobs, etc.) which could lead to the whole module being executed.

## Work around

Add an **if \_\_name\_\_ == “\_\_main\_\_”** to your Python script.