train.py

#!/usr/bin/env python3
# This file is covered by the LICENSE file in the root of this project.

import argparse
import shutil
from shutil import copyfile
import yaml
import os
from modules.trainer import Trainer


if __name__ == '__main__':

    def seed_torch(seed=1024):
        import random
        import torch
        import os
        import numpy as np
        random.seed(seed)
        os.environ['PYTHONHASHSEED'] = str(seed)
        np.random.seed(seed)
        torch.manual_seed(seed)
        torch.cuda.manual_seed(seed)
        torch.cuda.manual_seed_all(seed) # if you are using multi-GPU.
#         torch.backends.cudnn.deterministic = True
        print("We use the seed: {}".format(seed))
    seed_torch()

    parser = argparse.ArgumentParser("./train.py")
    parser.add_argument(
        '--dataset', '-d',
        type=str,
        required=True,
        default=None,
        help='Dataset to train with. No Default',
    )
    parser.add_argument(
        '--arch_cfg', '-ac',
        type=str,
        required=False,
        default='config/arch/senet-512.yml',
        help='Architecture yaml cfg file. See /config/arch for sample. No default!',
    )
    parser.add_argument(
        '--data_cfg', '-dc',
        type=str,
        required=False,
        default='config/labels/semantic-kitti.yaml',
        help='Classification yaml cfg file. See /config/labels for sample. No default!',
    )
    parser.add_argument(
        '--log', '-l',
        type=str,
        default='logs',
        help='Directory to put the log data. Default: ~/logs/date+time'
    )
    parser.add_argument(
        '--name', '-n',
        type=str,
        default=None,
        help='If you want to give an aditional discriptive name'
    )
    parser.add_argument(
        '--pretrained', '-p',
        type=str,
        required=False,
        default=None,
        help='Directory to get the pretrained model. If not passed, do from scratch!'
    )

    FLAGS, unparsed = parser.parse_known_args()
    FLAGS.log = FLAGS.log + '/' + FLAGS.name
    # print summary of what we will do
    print("----------")
    print("INTERFACE:")
    print("dataset", FLAGS.dataset)
    print("arch_cfg", FLAGS.arch_cfg)
    print("data_cfg", FLAGS.data_cfg)
    print("log", FLAGS.log)
    print("pretrained", FLAGS.pretrained)
    print("----------\n")

    # open arch config file
    try:
        print("Opening arch config file %s" % FLAGS.arch_cfg)
        ARCH = yaml.safe_load(open(FLAGS.arch_cfg, 'r'))
    except Exception as e:
        print(e)
        print("Error opening arch yaml file.")
        quit()

    # open data config file
    try:
        print("Opening data config file %s" % FLAGS.data_cfg)
        DATA = yaml.safe_load(open(FLAGS.data_cfg, 'r'))
    except Exception as e:
        print(e)
        print("Error opening data yaml file.")
        quit()

    # create log folder
    try:
        if os.path.isdir(FLAGS.log):
            shutil.rmtree(FLAGS.log)
        os.makedirs(FLAGS.log)
    except Exception as e:
        print(e)
        print("Error creating log directory. Check permissions!")
        quit()

    # does model folder exist?
    if FLAGS.pretrained is not None:
        if os.path.isdir(FLAGS.pretrained):
            print("model folder exists! Using model from %s" % (FLAGS.pretrained))
        else:
            print("model folder doesnt exist! Start with random weights...")
    else:
        print("No pretrained directory found.")

    # copy all files to log folder (to remember what we did, and make inference
    # easier). Also, standardize name to be able to open it later
    try:
        print("Copying files to %s for further reference." % FLAGS.log)
        copyfile(FLAGS.arch_cfg, FLAGS.log + "/arch_cfg.yaml")
        copyfile(FLAGS.data_cfg, FLAGS.log + "/data_cfg.yaml")
    except Exception as e:
        print(e)
        print("Error copying files, check permissions. Exiting...")
        quit()

    # create trainer and start the training
    trainer = Trainer(ARCH, DATA, FLAGS.dataset, FLAGS.log, FLAGS.pretrained)
    trainer.train()