This example creates a simple computation graph and uses callbacks to feed data and retrieve the results. Time between host-device transfer and receipt of the result on the host is computed and displayed for a range of different data sizes.

• callbacks.py The PopART example code.
• test_callbacks.py Test file.
• README.md This file.

1. Prepare the environment.

   Install the Poplar SDK following the instructions in the Getting Started guide for your IPU system. Make sure to source the enable.sh scripts for Poplar and PopART.

2. Run the example. Note that the PopART Python API only supports Python 3.

    python3 callbacks.py