Vitis Subsystem (VSS) enable the development, testing, and delivery of AI Engine graphs and PL kernels packaged as a platform-independent subsystem. VSSs allow for the simulation of the subsystem without the need for a hardware platform, making it faster and more flexible. You can configure and rebuild the VSS component for testing on multiple devices, making it ideal for feasibility studies, custom library development, and reusable modules. For more information, see Vitis Subsystem Flow.
When you select the Vitis Subsystem export type (see the following figure), the AI Engine graphs and PL kernels in your design are linked into a <design_name>.vss deliverable that is placed in the Export Directory. The VSS component can be used in either the Vitis Integrated Flow or the Vitis Export to Vivado Flow.