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Train_Parallel.py
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Train_Parallel.py
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import logging
import numpy as np
import mxnet as mx
from mxnet import metric
from DataIter import CarReID_Iter, CarReID_Softmax_Iter, CarReID_Proxy2_Iter, CarReID_Proxy_Mxnet_Iter
from DataIter import CarReID_Proxy_Mxnet_Iter2
from Solver import CarReID_Solver, CarReID_Softmax_Solver, CarReID_Proxy_Solver
from MDL_PARAM import model2 as now_model
from MDL_PARAM import model2_proxy_nca as proxy_nca_model
class Proxy_Metric(metric.EvalMetric):
def __init__(self, saveperiod=1):
super(Proxy_Metric, self).__init__('proxy_metric')
print "hello metric init..."
self.num_inst = 0
self.sum_metric = 0.0
self.p_inst = 0
self.saveperiod=saveperiod
# def reset(self):
# pass
def update(self, labels, preds):
# print '=========%d========='%(self.p_inst)
self.p_inst += 1
if self.p_inst%self.saveperiod==0:
self.num_inst += 1
loss = preds[0].asnumpy().mean()
# print 'metric', loss
self.sum_metric += loss
def Do_Proxy_NCA_Train2():
print 'Proxy NCA Training...'
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
ctxs = [mx.gpu(0), mx.gpu(1), mx.gpu(2), mx.gpu(3)]
# ctxs = [mx.gpu(0), mx.gpu(1), mx.gpu(3)]
# ctxs = [mx.gpu(0), mx.gpu(1)]
# ctxs = [mx.gpu(1)]
devicenum = len(ctxs)
num_epoch = 10000
batch_size = 32*devicenum
show_period = 1000
assert(batch_size%devicenum==0)
bsz_per_device = batch_size / devicenum
print 'batch_size per device:', bsz_per_device
bucket_key = bsz_per_device
featdim = 128
proxy_num = 43928
clsnum = proxy_num
data_shape = (batch_size, 3, 299, 299)
proxy_yM_shape = (batch_size, proxy_num)
proxy_Z_shape = (proxy_num, featdim)
proxy_ZM_shape = (batch_size, proxy_num)
label_shape = dict(zip(['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape]))
proxyfn = 'proxy.bin'
datafn = '/home/mingzhang/data/car_ReID_for_zhangming/data_each.list' #43928 calss number.
# datafn = '/home/mingzhang/data/car_ReID_for_zhangming/data_each.500.list'
# data_train = CarReID_Proxy2_Iter(['data'], [data_shape], ['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape], datafn, bucket_key)
data_train = CarReID_Proxy_Mxnet_Iter(['data'], [data_shape], ['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape], datafn, bucket_key)
dlr = 200000/batch_size
# dlr_steps = [dlr, dlr*2, dlr*3, dlr*4]
lr_start = 0.2 * (10**-1)
lr_min = 10**-6
lr_reduce = 0.9
lr_stepnum = np.log(lr_min/lr_start)/np.log(lr_reduce)
lr_stepnum = np.int(np.ceil(lr_stepnum))
dlr_steps = [dlr*i for i in xrange(1, lr_stepnum+1)]
print 'lr_start:%.1e, lr_min:%.1e, lr_reduce:%.2f, lr_stepsnum:%d'%(lr_start, lr_min, lr_reduce, lr_stepnum)
print dlr_steps
lr_scheduler = mx.lr_scheduler.MultiFactorScheduler(dlr_steps, lr_reduce)
# lr_scheduler = mx.lr_scheduler.FactorScheduler(dlr, 0.9)
param_prefix = 'MDL_PARAM/params2_proxy_nca/car_reid'
reid_net = proxy_nca_model.CreateModel_Color2(None, bsz_per_device, proxy_num, data_shape[2:])
# reid_net_p = proxy_nca_model.CreateModel_Color2_P(None, bsz_per_device, proxy_num, data_shape[2:])
reid_model = mx.mod.Module(context=ctxs, symbol=reid_net,
label_names=['proxy_yM', 'proxy_ZM'])
# reid_model_P = mx.mod.Module(context=mx.gpu(1), symbol=reid_net_p,
# label_names=['proxy_yM', 'proxy_ZM'])
#
# reid_model_P.bind(data_shapes=data_train.provide_data,
# label_shapes=data_train.provide_label,
# for_training=False)
optimizer_params={'learning_rate':lr_start,
'momentum':0.9,
'wd':0.0005,
'lr_scheduler':lr_scheduler,
'clip_gradient':None,
'rescale_grad': 1.0/batch_size}
proxy_metric = Proxy_Metric()
if True:
fn = param_prefix + '_0_' + '.bin'
reid_model.bind(data_shapes=data_train.provide_data,
label_shapes=data_train.provide_label)
reid_model.load_params(fn)
print 'loaded parameters from', fn
def norm_stat(d):
return mx.nd.norm(d)/np.sqrt(d.size)
mon = mx.mon.Monitor(1, norm_stat,
pattern='.*part1_fc1.*|.*proxy_Z_weight.*')
def batch_end_call(*args, **kwargs):
# print eval_metric.loss_list
epoch = args[0].epoch
nbatch = args[0].nbatch + 1
eval_metric = args[0].eval_metric
data_batch = args[0].locals['data_batch']
if nbatch%show_period==0:
fn = param_prefix + '_' + str(epoch%4) + '_' + '.bin'
reid_model.save_params(fn)
print 'saved parameters into', fn
eval_metric.reset()
if False:
args, auxs = reid_model.get_params()
proxy_Z = args['proxy_Z_weight'].asnumpy()
print 'z:', np.abs(proxy_Z).mean()
reid_model_P.set_params(args, auxs)
reid_model_P.forward(data_batch)
outs = reid_model_P.get_outputs()
val = outs[1].asnumpy()
val2 = outs[2].asnumpy()
val3 = outs[3].asnumpy()
val4 = outs[4].asnumpy()
print 'fc1:', np.abs(val).mean(), 'z:', val2.mean(), 'y:', val3, 'one_proxy:', np.abs(val4).mean(), val2[val2>val1]
# args, auxs = reid_model.get_params()
# print np.mean(args['proxy_Z_weight'].asnumpy())
batch_end_calls = [batch_end_call, mx.callback.Speedometer(batch_size, show_period/10)]
reid_model.fit(train_data=data_train, eval_metric=proxy_metric,
optimizer='sgd',
optimizer_params=optimizer_params,
initializer=mx.init.Normal(),
begin_epoch=0, num_epoch=num_epoch,
eval_end_callback=None,
kvstore=None,# monitor=mon,
batch_end_callback=batch_end_calls)
return
def Do_Proxy_NCA_Train3():
print 'Proxy NCA Training...'
# set up logger
logger = logging.getLogger()
logger.setLevel(logging.INFO)
ctxs = [mx.gpu(0), mx.gpu(1), mx.gpu(2), mx.gpu(3)]
# ctxs = [mx.gpu(0), mx.gpu(1), mx.gpu(3)]
# ctxs = [mx.gpu(0), mx.gpu(1)]
# ctxs = [mx.gpu(1)]
devicenum = len(ctxs)
num_epoch = 10000
batch_size = 32*devicenum
show_period = 1000
assert(batch_size%devicenum==0)
bsz_per_device = batch_size / devicenum
print 'batch_size per device:', bsz_per_device
bucket_key = bsz_per_device
featdim = 128
proxy_num = 548597
clsnum = proxy_num
data_shape = (batch_size, 3, 299, 299)
proxy_yM_shape = (batch_size, proxy_num)
proxy_Z_shape = (proxy_num, featdim)
proxy_ZM_shape = (batch_size, proxy_num)
label_shape = dict(zip(['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape]))
proxyfn = 'proxy.bin'
datapath = '/mnt/data1/tiansida/data/ReID_origin/mingzhang/'
datafn_list = ['data_each_part1.list', 'data_each_part2.list', 'data_each_part3.list', 'data_each_part4.list', 'data_each_part5.list', 'data_each_part6.list', 'data_each_part7.list'] #43928 calss number.
for di in xrange(len(datafn_list)):
datafn_list[di] = datapath + datafn_list[di]
# datafn = '/home/mingzhang/data/car_ReID_for_zhangming/data_each.500.list'
# data_train = CarReID_Proxy2_Iter(['data'], [data_shape], ['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape], datafn, bucket_key)
data_train = CarReID_Proxy_Mxnet_Iter2(['data'], [data_shape], ['proxy_yM', 'proxy_ZM'], [proxy_yM_shape, proxy_ZM_shape], datafn_list, bucket_key)
dlr = 200000/batch_size
# dlr_steps = [dlr, dlr*2, dlr*3, dlr*4]
lr_start = 10**-1
lr_min = 10**-6
lr_reduce = 0.9
lr_stepnum = np.log(lr_min/lr_start)/np.log(lr_reduce)
lr_stepnum = np.int(np.ceil(lr_stepnum))
dlr_steps = [dlr*i for i in xrange(1, lr_stepnum+1)]
print 'lr_start:%.1e, lr_min:%.1e, lr_reduce:%.2f, lr_stepsnum:%d'%(lr_start, lr_min, lr_reduce, lr_stepnum)
print dlr_steps
lr_scheduler = mx.lr_scheduler.MultiFactorScheduler(dlr_steps, lr_reduce)
# lr_scheduler = mx.lr_scheduler.FactorScheduler(dlr, 0.9)
param_prefix = 'MDL_PARAM/params2_proxy_nca/car_reid'
reid_net = proxy_nca_model.CreateModel_Color2(None, bsz_per_device, proxy_num, data_shape[2:])
# reid_net_p = proxy_nca_model.CreateModel_Color2_P(None, bsz_per_device, proxy_num, data_shape[2:])
reid_model = mx.mod.Module(context=ctxs, symbol=reid_net,
label_names=['proxy_yM', 'proxy_ZM'])
# reid_model_P = mx.mod.Module(context=mx.gpu(1), symbol=reid_net_p,
# label_names=['proxy_yM', 'proxy_ZM'])
#
# reid_model_P.bind(data_shapes=data_train.provide_data,
# label_shapes=data_train.provide_label,
# for_training=False)
optimizer_params={'learning_rate':0.1,
'momentum':0.9,
'wd':0.0005,
'lr_scheduler':lr_scheduler,
'clip_gradient':None,
'rescale_grad': 1.0/batch_size}
proxy_metric = Proxy_Metric()
if True:
fn = param_prefix + '_0_' + '.bin'
reid_model.bind(data_shapes=data_train.provide_data,
label_shapes=data_train.provide_label)
reid_model.load_params(fn)
print 'loaded parameters from', fn
def norm_stat(d):
return mx.nd.norm(d)/np.sqrt(d.size)
mon = mx.mon.Monitor(1, norm_stat,
pattern='.*part1_fc1.*|.*proxy_Z_weight.*')
def batch_end_call(*args, **kwargs):
# print eval_metric.loss_list
epoch = args[0].epoch
nbatch = args[0].nbatch + 1
eval_metric = args[0].eval_metric
data_batch = args[0].locals['data_batch']
if nbatch%show_period==0:
fn = param_prefix + '_' + str(epoch%4) + '_' + '.bin'
reid_model.save_params(fn)
print 'saved parameters into', fn
if False:
args, auxs = reid_model.get_params()
proxy_Z = args['proxy_Z_weight'].asnumpy()
print 'z:', np.abs(proxy_Z).mean()
reid_model_P.set_params(args, auxs)
reid_model_P.forward(data_batch)
outs = reid_model_P.get_outputs()
val = outs[1].asnumpy()
val2 = outs[2].asnumpy()
val3 = outs[3].asnumpy()
val4 = outs[4].asnumpy()
print 'fc1:', np.abs(val).mean(), 'z:', val2.mean(), 'y:', val3, 'one_proxy:', np.abs(val4).mean(), val2[val2>val1]
# args, auxs = reid_model.get_params()
# print np.mean(args['proxy_Z_weight'].asnumpy())
# eval_metric.reset()
batch_end_calls = [batch_end_call, mx.callback.Speedometer(batch_size, show_period/10)]
reid_model.fit(train_data=data_train, eval_metric=proxy_metric,
optimizer='sgd',
optimizer_params=optimizer_params,
initializer=mx.init.Normal(),
begin_epoch=0, num_epoch=num_epoch,
eval_end_callback=None,
kvstore=None,# monitor=mon,
batch_end_callback=batch_end_calls)
return
if __name__=='__main__':
# Do_Train()
# Do_Proxy_NCA_Train()
Do_Proxy_NCA_Train2()
# Do_Proxy_NCA_Train3()