The Composable pipeline is an overlay with a novel and clever architecture that allow us to adapt how the data flows between a series of IP cores.
The key characteristic of a composable overlay is an AXI4-Stream Switch, which plays the same role as an old telephone switchboard. The AXI4-Stream Switch provides the runtime routing of how data flow from one IP core to another.
On top of that, the composable overlay includes Dynamic Function eXchange DFX regions that brings new functionality to the design at runtime.
The combination of these two technologies plus a pythonic API, built on top of pynq, provide an unprecedented flexibility.
The composable overlay architecture of a composable video overlay for the PYNQ-Z2 is shown in the image below
git clone https://github.com/Xilinx/PYNQ_Composable_Pipeline.git --recursiveNote that this project depends on the Vitis Accelerated Libraries and PYNQ
git clone https://github.com/Xilinx/PYNQ_Composable_Pipeline
pip install PYNQ_Composable_Pipeline/
pynq-get-notebooks composable-pipeline -p $PYNQ_JUPYTER_NOTEBOOKS
The notebooks will be delivered into the folder /home/xilinx/jupyter_notebooks
Supported boards PYNQ-Z2 and PYNQ-ZU
To rebuild the composable pipeline you need Vitis 2020.2 installed. Navigate to one of the supported boards folder and run make, only steps for Linux are provided.
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SPDX-License-Identifier: BSD-3-Clause
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Copyright© 2021 Xilinx