Performance testing of serialization

This test checks the performance improvement of scene setup with serialization feature.

import lmenv
env = lmenv.load('.lmenv')

import os
import imageio
import pandas as pd
import numpy as np
import timeit
%matplotlib inline
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import make_axes_locatable
import lmscene
import lightmetrica as lm

%load_ext lightmetrica_jupyter

lm.init()
lm.log.init('jupyter')
lm.progress.init('jupyter')
lm.info()

[I|0.000] Lightmetrica -- Version 3.0.0 (rev. 70601db) Linux x64

scene_names = lmscene.scenes_small()

scene_setup_time_df = pd.DataFrame(
    columns=['scene loading', 'serialization', 'deserialization'],
    index=scene_names)
for scene_name in scene_names:
    lm.reset()

    lm.load_film('film_output', 'bitmap', {
        'w': 1920,
        'h': 1080
    })

    # Load the scene without serialization
    def load_scene():
        accel = lm.load_accel('accel', 'sahbvh', {})
        scene = lm.load_scene('scene', 'default', {
            'accel': accel.loc()
        })
        lmscene.load(scene, env.scene_path, scene_name)
    loading_time_without_serialization = timeit.timeit(stmt=load_scene, number=1)
    scene_setup_time_df['scene loading'][scene_name] = loading_time_without_serialization

    # Export the internal state to a file
    def serialize_scene():
        lm.save_state_to_file('lm.serialized')
    serialization_time = timeit.timeit(stmt=serialize_scene, number=1)
    scene_setup_time_df['serialization'][scene_name] = serialization_time

    # Import the internal state from the serialized file
    lm.reset()
    def deserialize_scene():
        lm.load_state_from_file('lm.serialized')
    deserialization_time = timeit.timeit(stmt=deserialize_scene, number=1)
    scene_setup_time_df['deserialization'][scene_name] = deserialization_time

[I|0.018] Loading asset [name='film_output']
[I|0.096] Loading asset [name='accel']
[I|0.096] Loading asset [name='scene']
[I|0.096] Loading asset [name='camera_main']
[I|0.096] Loading asset [name='model_obj']
[I|0.096] .. Loading OBJ file [path='fireplace_room.obj']
[I|0.096] .. Loading MTL file [path='fireplace_room.mtl']
[I|0.422] .. Loading texture [path='wood.ppm']
[I|0.512] .. Loading texture [path='leaf.ppm']
[I|0.514] .. Loading texture [path='picture8.ppm']
[I|0.546] .. Loading texture [path='wood5.ppm']
[I|1.572] Loading asset [name='film_output']
[I|1.651] Loading asset [name='accel']
[I|1.651] Loading asset [name='scene']
[I|1.651] Loading asset [name='camera_main']
[I|1.651] Loading asset [name='model_obj']
[I|1.651] .. Loading OBJ file [path='CornellBox-Sphere.obj']
[I|1.651] .. Loading MTL file [path='CornellBox-Sphere.mtl']
[I|2.189] Loading asset [name='film_output']
[I|2.266] Loading asset [name='accel']
[I|2.267] Loading asset [name='scene']
[I|2.267] Loading asset [name='camera_main']
[I|2.267] Loading asset [name='model_obj']
[I|2.267] .. Loading OBJ file [path='cube.obj']
[I|2.267] .. Loading MTL file [path='default.mtl']
[I|2.267] .. Loading texture [path='default.png']

scene_setup_time_df

	scene loading	serialization	deserialization
fireplace_room	0.502106	0.605808	0.358062
cornell_box_sphere	0.00285	0.292031	0.238252
cube	0.011338	0.289647	0.237782