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350 lines
12 KiB
Python
350 lines
12 KiB
Python
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'''
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@author: insightface
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'''
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import os
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import sys
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import math
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import random
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import logging
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import pickle
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import sklearn
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import numpy as np
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from image_iter import FaceImageIter
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import mxnet as mx
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from mxnet import ndarray as nd
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import argparse
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import mxnet.optimizer as optimizer
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
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import flops_counter
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from config import config, default, generate_config
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sys.path.append(os.path.join(os.path.dirname(__file__), 'eval'))
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import verification
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sys.path.append(os.path.join(os.path.dirname(__file__), 'symbol'))
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import fresnet
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import fmobilefacenet
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import fmobilenet
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import fmnasnet
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import fdensenet
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logger = logging.getLogger()
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logger.setLevel(logging.INFO)
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args = None
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def parse_args():
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parser = argparse.ArgumentParser(description='Train parall face network')
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# general
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parser.add_argument('--dataset', default=default.dataset, help='dataset config')
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parser.add_argument('--network', default=default.network, help='network config')
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parser.add_argument('--loss', default=default.loss, help='loss config')
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args, rest = parser.parse_known_args()
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generate_config(args.network, args.dataset, args.loss)
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parser.add_argument('--models-root', default=default.models_root, help='root directory to save model.')
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parser.add_argument('--pretrained', default=default.pretrained, help='pretrained model to load')
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parser.add_argument('--pretrained-epoch', type=int, default=default.pretrained_epoch, help='pretrained epoch to load')
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parser.add_argument('--ckpt', type=int, default=default.ckpt, help='checkpoint saving option. 0: discard saving. 1: save when necessary. 2: always save')
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parser.add_argument('--verbose', type=int, default=default.verbose, help='do verification testing and model saving every verbose batches')
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parser.add_argument('--lr', type=float, default=default.lr, help='start learning rate')
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parser.add_argument('--lr-steps', type=str, default=default.lr_steps, help='steps of lr changing')
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parser.add_argument('--wd', type=float, default=default.wd, help='weight decay')
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parser.add_argument('--mom', type=float, default=default.mom, help='momentum')
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parser.add_argument('--frequent', type=int, default=default.frequent, help='')
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parser.add_argument('--per-batch-size', type=int, default=default.per_batch_size, help='batch size in each context')
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parser.add_argument('--kvstore', type=str, default=default.kvstore, help='kvstore setting')
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parser.add_argument('--worker-id', type=int, default=0, help='worker id for dist training, starts from 0')
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args = parser.parse_args()
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return args
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def get_symbol_embedding():
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embedding = eval(config.net_name).get_symbol()
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all_label = mx.symbol.Variable('softmax_label')
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#embedding = mx.symbol.BlockGrad(embedding)
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all_label = mx.symbol.BlockGrad(all_label)
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out_list = [embedding, all_label]
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out = mx.symbol.Group(out_list)
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return out
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def get_symbol_arcface(args):
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embedding = mx.symbol.Variable('data')
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all_label = mx.symbol.Variable('softmax_label')
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gt_label = all_label
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is_softmax = True
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#print('call get_sym_arcface with', args, config)
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_weight = mx.symbol.Variable("fc7_%d_weight"%args._ctxid, shape=(args.ctx_num_classes, config.emb_size),
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lr_mult=config.fc7_lr_mult, wd_mult=config.fc7_wd_mult)
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if config.loss_name=='softmax': #softmax
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fc7 = mx.sym.FullyConnected(data=embedding, weight = _weight, no_bias = True, num_hidden=args.ctx_num_classes, name='fc7_%d'%args._ctxid)
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elif config.loss_name=='margin_softmax':
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_weight = mx.symbol.L2Normalization(_weight, mode='instance')
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nembedding = mx.symbol.L2Normalization(embedding, mode='instance', name='fc1n_%d'%args._ctxid)
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fc7 = mx.sym.FullyConnected(data=nembedding, weight = _weight, no_bias = True, num_hidden=args.ctx_num_classes, name='fc7_%d'%args._ctxid)
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if config.loss_m1!=1.0 or config.loss_m2!=0.0 or config.loss_m3!=0.0:
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gt_one_hot = mx.sym.one_hot(gt_label, depth = args.ctx_num_classes, on_value = 1.0, off_value = 0.0)
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if config.loss_m1==1.0 and config.loss_m2==0.0:
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_one_hot = gt_one_hot*args.margin_b
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fc7 = fc7-_one_hot
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else:
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fc7_onehot = fc7 * gt_one_hot
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cos_t = fc7_onehot
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t = mx.sym.arccos(cos_t)
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if config.loss_m1!=1.0:
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t = t*config.loss_m1
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if config.loss_m2!=0.0:
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t = t+config.loss_m2
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margin_cos = mx.sym.cos(t)
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if config.loss_m3!=0.0:
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margin_cos = margin_cos - config.loss_m3
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margin_fc7 = margin_cos
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margin_fc7_onehot = margin_fc7 * gt_one_hot
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diff = margin_fc7_onehot - fc7_onehot
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fc7 = fc7+diff
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fc7 = fc7*config.loss_s
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out_list = []
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out_list.append(fc7)
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if config.loss_name=='softmax': #softmax
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out_list.append(gt_label)
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out = mx.symbol.Group(out_list)
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return out
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def train_net(args):
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#_seed = 727
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#random.seed(_seed)
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#np.random.seed(_seed)
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#mx.random.seed(_seed)
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ctx = []
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cvd = os.environ['CUDA_VISIBLE_DEVICES'].strip()
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if len(cvd)>0:
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for i in xrange(len(cvd.split(','))):
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ctx.append(mx.gpu(i))
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if len(ctx)==0:
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ctx = [mx.cpu()]
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print('use cpu')
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else:
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print('gpu num:', len(ctx))
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prefix = os.path.join(args.models_root, '%s-%s-%s'%(args.network, args.loss, args.dataset), 'model')
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prefix_dir = os.path.dirname(prefix)
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print('prefix', prefix)
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if not os.path.exists(prefix_dir):
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os.makedirs(prefix_dir)
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args.ctx_num = len(ctx)
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if args.per_batch_size==0:
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args.per_batch_size = 128
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args.batch_size = args.per_batch_size*args.ctx_num
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args.rescale_threshold = 0
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args.image_channel = config.image_shape[2]
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config.batch_size = args.batch_size
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config.per_batch_size = args.per_batch_size
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data_dir = config.dataset_path
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path_imgrec = None
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path_imglist = None
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image_size = config.image_shape[0:2]
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assert len(image_size)==2
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assert image_size[0]==image_size[1]
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print('image_size', image_size)
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print('num_classes', config.num_classes)
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path_imgrec = os.path.join(data_dir, "train.rec")
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data_shape = (args.image_channel,image_size[0],image_size[1])
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num_workers = config.num_workers
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global_num_ctx = num_workers * args.ctx_num
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if config.num_classes%global_num_ctx==0:
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args.ctx_num_classes = config.num_classes//global_num_ctx
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else:
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args.ctx_num_classes = config.num_classes//global_num_ctx+1
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args.local_num_classes = args.ctx_num_classes * args.ctx_num
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args.local_class_start = args.local_num_classes * args.worker_id
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#if len(args.partial)==0:
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# local_classes_range = (0, args.num_classes)
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#else:
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# _vec = args.partial.split(',')
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# local_classes_range = (int(_vec[0]), int(_vec[1]))
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#args.partial_num_classes = local_classes_range[1] - local_classes_range[0]
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#args.partial_start = local_classes_range[0]
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print('Called with argument:', args, config)
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mean = None
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begin_epoch = 0
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base_lr = args.lr
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base_wd = args.wd
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base_mom = args.mom
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arg_params = None
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aux_params = None
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if len(args.pretrained)==0:
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esym = get_symbol_embedding()
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asym = get_symbol_arcface
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else:
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assert False
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if config.count_flops:
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all_layers = esym.get_internals()
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_sym = all_layers['fc1_output']
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FLOPs = flops_counter.count_flops(_sym, data=(1,3,image_size[0],image_size[1]))
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_str = flops_counter.flops_str(FLOPs)
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print('Network FLOPs: %s'%_str)
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if config.num_workers==1:
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from parall_module_local_v1 import ParallModule
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else:
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from parall_module_dist import ParallModule
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model = ParallModule(
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context = ctx,
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symbol = esym,
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data_names = ['data'],
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label_names = ['softmax_label'],
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asymbol = asym,
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args = args,
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)
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val_dataiter = None
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train_dataiter = FaceImageIter(
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batch_size = args.batch_size,
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data_shape = data_shape,
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path_imgrec = path_imgrec,
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shuffle = True,
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rand_mirror = config.data_rand_mirror,
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mean = mean,
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cutoff = config.data_cutoff,
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color_jittering = config.data_color,
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images_filter = config.data_images_filter,
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)
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if config.net_name=='fresnet' or config.net_name=='fmobilefacenet':
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initializer = mx.init.Xavier(rnd_type='gaussian', factor_type="out", magnitude=2) #resnet style
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else:
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initializer = mx.init.Xavier(rnd_type='uniform', factor_type="in", magnitude=2)
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_rescale = 1.0/args.batch_size
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opt = optimizer.SGD(learning_rate=base_lr, momentum=base_mom, wd=base_wd, rescale_grad=_rescale)
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_cb = mx.callback.Speedometer(args.batch_size, args.frequent)
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ver_list = []
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ver_name_list = []
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for name in config.val_targets:
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path = os.path.join(data_dir,name+".bin")
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if os.path.exists(path):
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data_set = verification.load_bin(path, image_size)
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ver_list.append(data_set)
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ver_name_list.append(name)
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print('ver', name)
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def ver_test(nbatch):
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results = []
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for i in xrange(len(ver_list)):
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acc1, std1, acc2, std2, xnorm, embeddings_list = verification.test(ver_list[i], model, args.batch_size, 10, None, None)
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print('[%s][%d]XNorm: %f' % (ver_name_list[i], nbatch, xnorm))
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#print('[%s][%d]Accuracy: %1.5f+-%1.5f' % (ver_name_list[i], nbatch, acc1, std1))
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print('[%s][%d]Accuracy-Flip: %1.5f+-%1.5f' % (ver_name_list[i], nbatch, acc2, std2))
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results.append(acc2)
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return results
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highest_acc = [0.0, 0.0] #lfw and target
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#for i in xrange(len(ver_list)):
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# highest_acc.append(0.0)
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global_step = [0]
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save_step = [0]
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lr_steps = [int(x) for x in args.lr_steps.split(',')]
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print('lr_steps', lr_steps)
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def _batch_callback(param):
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#global global_step
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global_step[0]+=1
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mbatch = global_step[0]
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for step in lr_steps:
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if mbatch==step:
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opt.lr *= 0.1
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print('lr change to', opt.lr)
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break
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_cb(param)
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if mbatch%1000==0:
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print('lr-batch-epoch:',opt.lr,param.nbatch,param.epoch)
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if mbatch>=0 and mbatch%args.verbose==0:
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acc_list = ver_test(mbatch)
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save_step[0]+=1
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msave = save_step[0]
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do_save = False
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is_highest = False
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if len(acc_list)>0:
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#lfw_score = acc_list[0]
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#if lfw_score>highest_acc[0]:
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# highest_acc[0] = lfw_score
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# if lfw_score>=0.998:
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# do_save = True
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score = sum(acc_list)
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if acc_list[-1]>=highest_acc[-1]:
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if acc_list[-1]>highest_acc[-1]:
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is_highest = True
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else:
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if score>=highest_acc[0]:
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is_highest = True
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highest_acc[0] = score
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highest_acc[-1] = acc_list[-1]
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#if lfw_score>=0.99:
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# do_save = True
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if is_highest:
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do_save = True
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if args.ckpt==0:
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do_save = False
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elif args.ckpt==2:
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do_save = True
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elif args.ckpt==3:
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msave = 1
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if do_save:
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print('saving', msave)
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arg, aux = model.get_export_params()
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all_layers = model.symbol.get_internals()
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_sym = all_layers['fc1_output']
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mx.model.save_checkpoint(prefix, msave, _sym, arg, aux)
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print('[%d]Accuracy-Highest: %1.5f'%(mbatch, highest_acc[-1]))
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if config.max_steps>0 and mbatch>config.max_steps:
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sys.exit(0)
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epoch_cb = None
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train_dataiter = mx.io.PrefetchingIter(train_dataiter)
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model.fit(train_dataiter,
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begin_epoch = begin_epoch,
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num_epoch = 999999,
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eval_data = val_dataiter,
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#eval_metric = eval_metrics,
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kvstore = args.kvstore,
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optimizer = opt,
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#optimizer_params = optimizer_params,
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initializer = initializer,
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arg_params = arg_params,
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aux_params = aux_params,
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allow_missing = True,
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batch_end_callback = _batch_callback,
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epoch_end_callback = epoch_cb )
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def main():
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global args
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args = parse_args()
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train_net(args)
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if __name__ == '__main__':
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main()
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