def check_amp_convert_bucketing_module():
model = train_model(context=mx.current_context())
result_model = amp.convert_bucketing_module(model)
val_sent = []
batch_size = 128
invalid_label = -1
num_sentence = 1000
buckets = [5, 10, 20, 30, 40]
len_vocab = 50
for _ in range(num_sentence):
len_sentence = randint(6,
max(buckets) -
1) # leave out the two last buckets empty
val_sentence = []
for _ in range(len_sentence):
val_sentence.append(randint(1, len_vocab))
val_sent.append(val_sentence)
data_val = mx.rnn.BucketSentenceIter(val_sent,
batch_size,
buckets=buckets,
invalid_label=invalid_label)
result_model.bind(data_val.provide_data,
data_val.provide_label,
for_training=False)
result_model.score(data_val,
mx.gluon.metric.Perplexity(invalid_label),
batch_end_callback=mx.callback.Speedometer(
batch_size, 1))
# AMP conversion with cast_optional_params set to true
# Flaky test when cast_optional_params set to True : https://github.com/apache/incubator-mxnet/issues/16030
'''
def test_bucketing_save_load(tmpdir):
previous_update_on_kvstore = os.getenv('MXNET_UPDATE_ON_KVSTORE', "1")
os.putenv('MXNET_UPDATE_ON_KVSTORE', '1')
def dict_equ(a, b):
assert set(a) == set(b)
for k in a:
assert (a[k].asnumpy() == b[k].asnumpy()).all()
len_vocab = 50
num_embed = 25
num_epochs = 5
batch_size = 128
num_layers = 2
num_hidden = 25
buckets = [5, 10, 20, 30, 40]
invalid_label = -1
num_sentence=1000
stack = mx.rnn.SequentialRNNCell()
for i in range(num_layers):
stack.add(mx.rnn.LSTMCell(num_hidden=num_hidden, prefix='lstm_l%d_' % i))
def sym_gen(seq_len):
data = mx.sym.Variable('data')
label = mx.sym.Variable('softmax_label')
embed = mx.sym.Embedding(data=data, input_dim=len_vocab,
output_dim=num_embed, name='embed')
stack.reset()
outputs, states = stack.unroll(seq_len, inputs=embed, merge_outputs=True)
pred = mx.sym.Reshape(outputs, shape=(-1, num_hidden))
pred = mx.sym.FullyConnected(data=pred, num_hidden=len_vocab, name='pred')
label = mx.sym.Reshape(label, shape=(-1,))
loss = mx.sym.SoftmaxOutput(data=pred, label=label, name='softmax')
return loss, ('data',), ('softmax_label',)
path = str(tmpdir.join('test'))
model = train_model(context=mx.current_context())
model.save_checkpoint(path, 0)
data_train, data_val = prepare_bucketing_data(buckets, len_vocab, batch_size, invalid_label, num_sentence)
mod2 = mx.mod.BucketingModule.load(path, 0, sym_gen=sym_gen,
default_bucket_key=data_train.default_bucket_key)
mod2.bind(data_shapes=data_train.provide_data,
label_shapes=data_train.provide_label)
for bucket_key in model._buckets.keys():
dict_equ(model._buckets[model._default_bucket_key].get_params()[0],
mod2._buckets[mod2._default_bucket_key].get_params()[0])
mod2.fit(
train_data=data_train,
eval_data=data_val,
eval_metric=mx.gluon.metric.Perplexity(invalid_label), # Use Perplexity for multiclass classification.
kvstore='device',
optimizer='sgd',
optimizer_params={'learning_rate': 0.01,
'momentum': 0,
'wd': 0.00001},
initializer=mx.init.Xavier(factor_type="in", magnitude=2.34),
num_epoch=num_epochs,
batch_end_callback=mx.callback.Speedometer(batch_size, 50))
os.putenv('MXNET_UPDATE_ON_KVSTORE', previous_update_on_kvstore)
