Basic Verification Script - 2025.1 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.

  • Such data has been generated following the AIE-ML Kernel and Graph programming User Guide (UG1603)

  • In the v_input folder, there are 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.

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

• Performs the FFT on the input data with the Numpy library functions, to create a golden reference to be compared with the AI Engine simulation outputs.

• Creates a graph where the instance 0 is plotted both for the AI Engine output data and for 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 where the instance 0 is plotted both for the Numpy IFFT of the AI Engine outputs and for 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 IO temporal interleaving factor $\theta$: the ratio between the PL clock speed and the sample rate

• The IO spacial interleaving factor: the amount of samples packed together in a IO 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.