Specifying Streaming Connections between Compute Units - 2020.2 English

Vitis Unified Software Platform Documentation: Application Acceleration Development (UG1393)

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2020.2 English
The Vitis core development kit supports streaming data transfer between two kernels, allowing data to move directly from one kernel to another without having to transmit back through global memory. However, the process has to be implemented in the kernel code itself, as described in Streaming Data Transfers between Kernels (K2K), and also specified during the kernel build process.
Note: This also supports streaming connections to/from free running kernels as described in Free-Running Kernel.

The streaming data ports of kernels can be connected during v++ linking using the --connectivity.sc option. This option can be specified at the command line, or from a config file that is specified using the --config option, as described in Vitis Compiler Command.

To connect the streaming output port of a producer kernel to the streaming input port of a consumer kernel, setup the connection in the v++ config file using the connectivity.stream_connect option as follows: