<div class="section-label"><span class="num">08</span> Concurrency</div> <div class="section-title">Cross-platform <em>multiprocessing</em>.</div> The v2 Python package uses `from multiprocessing import freeze_support` so concurrent calls work across platforms. Include `freeze_support()` in the entry-point block on: - **Windows**, which always uses the `spawn` start method - **macOS with Apple Silicon** when Python is installed via Homebrew, which also defaults to `spawn` On most Linux systems the call is a no-op (`fork` is the default). Including it still keeps scripts and the pip package safe when they use multiprocessing or threaded APIs. ```python from multiprocessing import freeze_support if __name__ == "__main__": freeze_support() # predict_grid / predict_maxfit / predict_psr ... ``` ## Related - [[API/Python API Client/Introduction|Python Client]] - [[API/Python API Client/API Client/Overview|API Client]] - [[Quickstart|Quickstart]]