# tff.backends.test.set_async_test_cpp_execution_context

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| [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/tensorflow/federated/blob/v0.87.0 Version 2.0, January 2004 Licensed under the Apache License, Version 2.0 (the) |

Sets an execution context that executes computations locally.

    tff.backends.test.set_async_test_cpp_execution_context(
        *,
        default_num_clients: int = 0,
        max_concurrent_computation_calls: int = -1,
        stream_structs: bool = False
    ) -> None