Export 101

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Download the model

import aidge_core

file_url = "https://huggingface.co/EclipseAidge/LeNet/resolve/main/lenet_mnist.onnx?download=true"
file_path = "lenet_mnist.onnx"
aidge_core.utils.download_file(file_path, file_url)

lenet_mnist.onnx: 100%|██████████| 349k/349k [00:00<00:00, 6.46MB/s]

Load the model in Aidge and manipulate it

import aidge_backend_cpu
import aidge_onnx
import aidge_export_cpp

model = aidge_onnx.load_onnx("lenet_mnist.onnx")

# Remove Flatten node, useless in the CPP export
aidge_core.remove_flatten(model)

# Configuration for the model + forward dimensions
model.compile("cpu", aidge_core.dtype.float32, dims=[[1, 1, 28, 28]])

!rm -rf lenet_export_fp32

# Generate scheduling of the model
scheduler = aidge_core.SequentialScheduler(model)
scheduler.generate_scheduling()

Export the model

export_folder = "lenet_export_fp32"

aidge_core.export_utils.scheduler_export(
        scheduler,
        export_folder,
        aidge_export_cpp.ExportLibCpp,
        memory_manager=aidge_core.mem_info.generate_optimized_memory_info,
        memory_manager_args={"stats_folder": f"{export_folder}/stats", "wrapping": False }
)

Draw your own number

from ipywidgets import HBox, VBox, Button, Layout
from ipycanvas import RoughCanvas, hold_canvas

img_name = "my_number.png"

canvas = RoughCanvas(width=28, height=28, sync_image_data=True)

button_gen = Button(description="Generate PNG")
button_clear = Button(description="Clear")

drawing = False
position = None
shape = []

def on_erase_button_clicked(b):
    canvas.clear()

def on_generate_button_clicked(b):
    try:
        canvas.to_file(img_name)
        print(f"Image generated to {img_name} !")
    except:
        print("Draw a number before generating the image.")

button_clear.on_click(on_erase_button_clicked)
button_gen.on_click(on_generate_button_clicked)

def on_mouse_down(x, y):
    global drawing
    global position
    global shape

    drawing = True
    position = (x, y)
    shape = [position]

def on_mouse_move(x, y):
    global drawing
    global position
    global shape

    if not drawing:
        return

    with hold_canvas():
        canvas.stroke_line(position[0], position[1], x, y)
        position = (x, y)

    shape.append(position)

def on_mouse_up(x, y):
    global drawing
    global position
    global shape

    drawing = False

    with hold_canvas():
        canvas.stroke_line(position[0], position[1], x, y)

    shape = []

canvas.on_mouse_down(on_mouse_down)
canvas.on_mouse_move(on_mouse_move)
canvas.on_mouse_up(on_mouse_up)

canvas.stroke_style = "#000000"

VBox((canvas, HBox((button_gen, button_clear))),
     layout=Layout(height='auto', width="300px"))

Generate inputs for testing the model from your drawing

aidge_tensor = None
try:
    number_np = canvas.get_image_data()
    # We got a numpy array with the shape of (28,28,4)
    # Transform it to (28,28)
    x = number_np[:, :, 3].astype("float32")
    aidge_tensor = aidge_core.Tensor(x / 255)
except:
    print("Please draw a number in the previous cell before running this one.")

Please draw a number in the previous cell before running this one.

Generate a main that will do an inference on the drawing.

if aidge_tensor:
    aidge_core.export_utils.generate_main_cpp(export_folder, model, inputs_tensor=aidge_tensor)
else:
    print("Please draw a number before generating the export.")

Please draw a number before generating the export.

Compile the export and test it

!cd lenet_export_fp32 && make

make[1]: Entering directory '/builds/eclipse/aidge/aidge/docs/source/Tutorial/lenet_export_fp32'
g++  -O2 -Wall -Wextra -MMD -fopenmp -I. -I./dnn -I./dnn/include -I./dnn/layers -I./dnn/parameters -c dnn/src/forward.cpp -o build/./dnn/src/forward.o
In file included from ./dnn/include/layers/data_10_Relu.h:3,
                 from dnn/src/forward.cpp:15:
./dnn/include/network/rescaling_utils.hpp:11:16: warning: ‘int64_t smlal(int32_t, int32_t, uint32_t, uint32_t)’ defined but not used []8;;https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wunused-function-Wunused-function]8;;]
   11 | static int64_t smlal(int32_t lhs, int32_t rhs,
      |                ^~~~~
g++  build/./dnn/src/forward.o  -fopenmp -o bin/run_export
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:19: build] Error 1
make[1]: Leaving directory '/builds/eclipse/aidge/aidge/docs/source/Tutorial/lenet_export_fp32'

!./lenet_export_fp32/bin/run_export

/usr/bin/sh: 1: ./lenet_export_fp32/bin/run_export: not found