Basic verification script - Basic verification script - 2025.2 English - XD100

The basic verification Python script contained in this folder works as follows:

• Reads the input data from the text files named PLIO_i[*] in the v_input folder.

  • This data follows the AIE-ML Kernel and Graph programming User Guide (UG1603)

  • The v_input folder has two other folders: one contains text files representing a sampled rectangular wave, the other contains text files with random data. You can replace the text files in the v_input folder with those.

• Reads the AI Engine simulation output data from the text files named PLIO_o[*] in the v_output folder.

  • This data has been copied and pasted from the simulation outputs created with the AMD Vitis™ Unified IDE.

• Performs the FFT on the input data with the NumPy library functions to create a golden reference to compare with the AI Engine simulation outputs.

• Creates a graph that plots instance 0 for both the AI Engine output data and the NumPy golden reference.

• Performs the iFFT on the AI Engine simulation output data with the NumPy library functions to compare it with the input data.

• Creates a graph that plots instance 0 for both the NumPy iFFT of the AI Engine outputs and the input data.

• Creates a graph displaying the relative error between the NumPy golden reference FFT and the AI Engine one for each point of instance 0.

Inside the script there is a section where it is possible to set the following parameters:

• The datatype

• The number of points

• The number of signal parallel instances

• The I/O temporal interleaving factor \(\theta\) which is the ratio between the PL clock speed and the sample rate

• The I/O spacial interleaving factor which is the amount of samples packed together in a I/O channel

• The number of sampling repetitions: the parameter inside the AI Engine Run method in the graph .cpp file

Do not change such settings parameters while reproducing this tutorial.