After the graph has been compiled, you can simulate your design with the
aiesimulator command. This uses a cycle approximate model to test your graph and get preliminary throughput information early in the design cycle, while the PL developers continue to work on the platform for the application.
Note: Simulating the design with VCD will increase simulation runtime. To learn more about this feature you can read this section here: AI Engine SystemC Simulator.
To run simulation you can run the command:
make sim TARGET=hw
aiesimulator --profile --dump-vcd=tutorial --pkg-dir=./Work
| Flag | Description | | —- | ———– | | –profile | Profiles All the kernels, or select kernels (col,row)…(col,row).| | –dump-vcd | Grabs internal signals of tiles and dumps it in a VCD file. | | –pkg-dir | The Work directory. |
When simulation is completed navigate to the
aiesimulator_outputdirectory from a terminal by running:
cd aiesimulator_output; ls
You should see something similar to this:
aiesim_options.txt profile_funct_24_0.xml profile_funct_25_0.xml profile_instr_24_0.xml profile_instr_25_0.xml data profile_funct_24_1.txt profile_funct_25_1.txt profile_instr_24_1.txt profile_instr_25_1.txt default.aierun_summary profile_funct_24_1.xml profile_funct_25_1.xml profile_instr_24_1.xml profile_instr_25_1.xml profile_funct_24_0.txt profile_funct_25_0.txt profile_instr_24_0.txt profile_instr_25_0.txt
As you can see a variety of files, the ones prefixed with
profile_ are the outputs of the profiling and calculated per tile. In this tutorial, the profiling is done for all tiles that are utilized, but you can limit to specific tiles by providing the row and column of the tile. To see more info about profiling with
aiesimulator go here. You can open up these files to see what was calculated, but it is better to view it in Vitis™ Analyzer where it is all curated. The
data directory is generated here with the output file(s) you have in the
graph.cpp for the PLIO objects. Lastly, the
default.aierun_summary is generated, which contains all the information generated by
aiesimulator with profiling and trace info, and when opening this file in Vitis Analyzer will allow you to browse all the output files, and profile/trace data.
tutorial.vcd is generated on the same level as the