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PaddleSpeech/utils/avg_model.py

115 lines
3.5 KiB

#!/usr/bin/env python3
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import glob
import json
import os
import numpy as np
import paddle
def main(args):
paddle.set_device('cpu')
val_scores = []
beat_val_scores = None
selected_epochs = None
jsons = glob.glob(f'{args.ckpt_dir}/[!train]*.json')
jsons = sorted(jsons, key=os.path.getmtime, reverse=True)
for y in jsons:
with open(y, 'r') as f:
dic_json = json.load(f)
loss = dic_json['val_loss']
epoch = dic_json['epoch']
if epoch >= args.min_epoch and epoch <= args.max_epoch:
val_scores.append((epoch, loss))
val_scores = np.array(val_scores)
if args.val_best:
sort_idx = np.argsort(val_scores[:, 1])
sorted_val_scores = val_scores[sort_idx]
else:
sorted_val_scores = val_scores
beat_val_scores = sorted_val_scores[:args.num, 1]
selected_epochs = sorted_val_scores[:args.num, 0].astype(np.int64)
print("selected val scores = " + str(beat_val_scores))
print("selected epochs = " + str(selected_epochs))
path_list = [
args.ckpt_dir + '/{}.pdparams'.format(int(epoch))
for epoch in sorted_val_scores[:args.num, 0]
]
print(path_list)
avg = None
num = args.num
assert num == len(path_list)
for path in path_list:
print(f'Processing {path}')
states = paddle.load(path)
if avg is None:
avg = states
else:
for k in avg.keys():
avg[k] += states[k]
# average
for k in avg.keys():
if avg[k] is not None:
avg[k] /= num
paddle.save(avg, args.dst_model)
print(f'Saving to {args.dst_model}')
meta_path = os.path.splitext(args.dst_model)[0] + '.avg.json'
with open(meta_path, 'w') as f:
data = json.dumps({
"mode": 'val_best' if args.val_best else 'latest',
"avg_ckpt": args.dst_model,
"val_loss_mean": np.mean(beat_val_scores),
"ckpts": path_list,
"epochs": selected_epochs.tolist(),
"val_losses": beat_val_scores.tolist(),
})
f.write(data + "\n")
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='average model')
parser.add_argument('--dst_model', required=True, help='averaged model')
parser.add_argument(
'--ckpt_dir', required=True, help='ckpt model dir for average')
parser.add_argument(
'--val_best', action="store_true", help='averaged model')
parser.add_argument(
'--num', default=5, type=int, help='nums for averaged model')
parser.add_argument(
'--min_epoch',
default=0,
type=int,
help='min epoch used for averaging model')
parser.add_argument(
'--max_epoch',
default=65536, # Big enough
type=int,
help='max epoch used for averaging model')
args = parser.parse_args()
print(args)
main(args)