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LSTM API optimization

This commit is contained in:
cj 2020-09-16 20:52:05 +08:00
parent 3d8c120c57
commit 207e515fce
3 changed files with 229 additions and 131 deletions
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125
mindspore/nn/layer/lstm.py
View File

@ -14,12 +14,12 @@
# ============================================================================
"""lstm"""
import math
import numpy as np
import mindspore.nn as nn
from mindspore import context
from mindspore._checkparam import Validator as validator
from mindspore.common.initializer import initializer
from mindspore.common.parameter import Parameter, ParameterTuple
from mindspore.common.parameter import Parameter
from mindspore.common.tensor import Tensor
from mindspore.nn.cell import Cell
from mindspore.ops import operations as P
@ -118,83 +118,41 @@ class LSTM(Cell):
dropout=0,
bidirectional=False):
super(LSTM, self).__init__()
self.input_size = input_size
self.hidden_size = hidden_size
self.num_layers = num_layers
self.has_bias = has_bias
self.batch_first = validator.check_value_type("batch_first", batch_first, [bool], self.cls_name)
self.hidden_size = validator.check_integer("hidden_size", hidden_size, 0, Rel.GT, self.cls_name)
self.num_layers = validator.check_integer("num_layers", num_layers, 0, Rel.GT, self.cls_name)
self.dropout = float(dropout)
self.bidirectional = bidirectional
if self.batch_first:
self.transpose1 = P.Transpose()
self.transpose2 = P.Transpose()
num_directions = 2 if self.bidirectional else 1
self.cpu_target = False
enable_debug = context.get_context("enable_debug_runtime")
if context.get_context("device_target") == "CPU" and not enable_debug:
self.cpu_target = True
if not self.cpu_target:
self.lstm = P.LSTM(input_size=self.input_size,
hidden_size=self.hidden_size,
num_layers=self.num_layers,
has_bias=self.has_bias,
bidirectional=self.bidirectional,
dropout=self.dropout)
validator.check_value_type("batch_first", batch_first, [bool], self.cls_name)
validator.check_integer("hidden_size", hidden_size, 0, Rel.GT, self.cls_name)
validator.check_integer("num_layers", num_layers, 0, Rel.GT, self.cls_name)
self.batch_first = batch_first
self.transpose = P.Transpose()
self.lstm = P.LSTM(input_size=input_size,
hidden_size=hidden_size,
num_layers=num_layers,
has_bias=has_bias,
bidirectional=bidirectional,
dropout=float(dropout))
weight_size = 0
gate_size = 4 * self.hidden_size
for layer in range(self.num_layers):
input_layer_size = self.input_size if layer == 0 else self.hidden_size * num_directions
gate_size = 4 * hidden_size
num_directions = 2 if bidirectional else 1
for layer in range(num_layers):
input_layer_size = input_size if layer == 0 else hidden_size * num_directions
increment_size = gate_size * input_layer_size
increment_size += gate_size * self.hidden_size
if self.has_bias:
increment_size += gate_size * hidden_size
if has_bias:
increment_size += 2 * gate_size
weight_size += increment_size * num_directions
stdv = 1 / math.sqrt(hidden_size)
w_np = np.random.uniform(-stdv, stdv, (weight_size, 1, 1)).astype(np.float32)
self.weight = Parameter(initializer(Tensor(w_np), [weight_size, 1, 1]), name='weight')
else:
input_size_list = []
input_size_list.append(self.input_size)
for i in range(self.num_layers - 1):
input_size_list.append(self.hidden_size * num_directions)
weights = []
layers = []
bias_size = 0 if not self.has_bias else num_directions * self.hidden_size * 4
stdv = 1 / math.sqrt(hidden_size)
for i in range(num_layers):
weight_size = (input_size_list[i] + self.hidden_size) * num_directions * self.hidden_size * 4
if has_bias:
weight_size = weight_size + bias_size
w_np = np.random.uniform(-stdv, stdv, (weight_size, 1, 1)).astype(np.float32)
weights.append(Parameter(initializer(Tensor(w_np), w_np.shape), name='weight' + str(i)))
layers.append(nn.LSTMCell(input_size=input_size_list[i],
hidden_size=self.hidden_size,
has_bias=self.has_bias,
bidirectional=self.bidirectional,
dropout=self.dropout))
self.lstms = layers
self.weight = ParameterTuple(tuple(weights))
self.fill = P.Fill()
self.shape = P.Shape()
def construct(self, x, hx):
if self.batch_first:
x = self.transpose1(x, (1, 0, 2))
if not self.cpu_target:
x = self.transpose(x, (1, 0, 2))
h, c = hx
output, h, c, _, _ = self.lstm(x, h, c, self.weight)
x, h, c, _, _ = self.lstm(x, h, c, self.weight)
if self.batch_first:
output = self.transpose2(output, (1, 0, 2))
return (output, (h, c))
h, c = hx
output, hn, cn, _, _ = self.lstms[0](x, h[0], c[0], self.weight[0])
for i in range(1, self.num_layers):
output, hn, cn, _, _ = self.lstms[i](output, h[i], c[i], self.weight[i])
if self.batch_first:
output = self.transpose2(output, (1, 0, 2))
return (output, (hn, cn))
x = self.transpose(x, (1, 0, 2))
return x, (h, c)
class LSTMCell(Cell):
@ -291,30 +249,19 @@ class LSTMCell(Cell):
dropout=0,
bidirectional=False):
super(LSTMCell, self).__init__()
self.input_size = input_size
self.hidden_size = hidden_size
self.has_bias = has_bias
self.batch_first = validator.check_value_type("batch_first", batch_first, [bool], self.cls_name)
self.dropout = float(dropout)
self.bidirectional = bidirectional
self.num_directions = 1
if self.bidirectional:
self.num_directions = 2
if self.batch_first:
self.transpose1 = P.Transpose()
self.transpose2 = P.Transpose()
self.lstm = P.LSTM(input_size=self.input_size,
hidden_size=self.hidden_size,
self.transpose = P.Transpose()
self.lstm = P.LSTM(input_size=input_size,
hidden_size=hidden_size,
num_layers=1,
has_bias=self.has_bias,
bidirectional=self.bidirectional,
dropout=self.dropout)
has_bias=has_bias,
bidirectional=bidirectional,
dropout=float(dropout))
def construct(self, x, h, c, w):
if self.batch_first:
x = self.transpose1(x, (1, 0, 2))
output, hn, cn, _, _ = self.lstm(x, h, c, w)
x = self.transpose(x, (1, 0, 2))
x, h, c, _, _ = self.lstm(x, h, c, w)
if self.batch_first:
output = self.transpose2(output, (1, 0, 2))
return output, hn, cn, _, _
x = self.transpose(x, (1, 0, 2))
return x, h, c, _, _

123
model_zoo/official/nlp/lstm/src/lstm.py
View File

@ -13,40 +13,108 @@
# limitations under the License.
# ============================================================================
"""LSTM."""
import math
import numpy as np
from mindspore import Tensor, nn, context
from mindspore import Tensor, nn, context, Parameter, ParameterTuple
from mindspore.common.initializer import initializer
from mindspore.ops import operations as P
STACK_LSTM_DEVICE = ["CPU"]
# Initialize short-term memory (h) and long-term memory (c) to 0
def lstm_default_state(batch_size, hidden_size, num_layers, bidirectional):
"""init default input."""
num_directions = 1
if bidirectional:
num_directions = 2
if context.get_context("device_target") == "CPU":
h_list = []
c_list = []
i = 0
while i < num_layers:
hi = Tensor(np.zeros((num_directions, batch_size, hidden_size)).astype(np.float32))
h_list.append(hi)
ci = Tensor(np.zeros((num_directions, batch_size, hidden_size)).astype(np.float32))
c_list.append(ci)
i = i + 1
h = tuple(h_list)
c = tuple(c_list)
num_directions = 2 if bidirectional else 1
h = Tensor(np.zeros((num_layers * num_directions, batch_size, hidden_size)).astype(np.float32))
c = Tensor(np.zeros((num_layers * num_directions, batch_size, hidden_size)).astype(np.float32))
return h, c
h = Tensor(
np.zeros((num_layers * num_directions, batch_size, hidden_size)).astype(np.float32))
c = Tensor(
np.zeros((num_layers * num_directions, batch_size, hidden_size)).astype(np.float32))
def stack_lstm_default_state(batch_size, hidden_size, num_layers, bidirectional):
"""init default input."""
num_directions = 2 if bidirectional else 1
h_list = c_list = []
for _ in range(num_layers):
h_list.append(Tensor(np.zeros((num_directions, batch_size, hidden_size)).astype(np.float32)))
c_list.append(Tensor(np.zeros((num_directions, batch_size, hidden_size)).astype(np.float32)))
h, c = tuple(h_list), tuple(c_list)
return h, c
class StackLSTM(nn.Cell):
"""
Stack multi-layers LSTM together.
"""
def __init__(self,
input_size,
hidden_size,
num_layers=1,
has_bias=True,
batch_first=False,
dropout=0.0,
bidirectional=False):
super(StackLSTM, self).__init__()
self.num_layers = num_layers
self.batch_first = batch_first
self.transpose = P.Transpose()
# direction number
num_directions = 2 if bidirectional else 1
# input_size list
input_size_list = [input_size]
for i in range(num_layers - 1):
input_size_list.append(hidden_size * num_directions)
# layers
layers = []
for i in range(num_layers):
layers.append(nn.LSTMCell(input_size=input_size_list[i],
hidden_size=hidden_size,
has_bias=has_bias,
batch_first=batch_first,
bidirectional=bidirectional,
dropout=dropout))
# weights
weights = []
for i in range(num_layers):
# weight size
weight_size = (input_size_list[i] + hidden_size) * num_directions * hidden_size * 4
if has_bias:
bias_size = num_directions * hidden_size * 4
weight_size = weight_size + bias_size
# numpy weight
stdv = 1 / math.sqrt(hidden_size)
w_np = np.random.uniform(-stdv, stdv, (weight_size, 1, 1)).astype(np.float32)
# lstm weight
weights.append(Parameter(initializer(Tensor(w_np), w_np.shape), name="weight" + str(i)))
#
self.lstms = layers
self.weight = ParameterTuple(tuple(weights))
def construct(self, x, hx):
"""construct"""
if self.batch_first:
x = self.transpose(x, (1, 0, 2))
# stack lstm
h, c = hx
hn = cn = None
for i in range(self.num_layers):
x, hn, cn, _, _ = self.lstms[i](x, h[i], c[i], self.weight[i])
if self.batch_first:
x = self.transpose(x, (1, 0, 2))
return x, (hn, cn)
class SentimentNet(nn.Cell):
"""Sentiment network structure."""
@ -67,13 +135,24 @@ class SentimentNet(nn.Cell):
self.embedding.embedding_table.requires_grad = False
self.trans = P.Transpose()
self.perm = (1, 0, 2)
if context.get_context("device_target") in STACK_LSTM_DEVICE:
# stack lstm by user
self.encoder = StackLSTM(input_size=embed_size,
hidden_size=num_hiddens,
num_layers=num_layers,
has_bias=True,
bidirectional=bidirectional,
dropout=0.0)
self.h, self.c = stack_lstm_default_state(batch_size, num_hiddens, num_layers, bidirectional)
else:
# standard lstm
self.encoder = nn.LSTM(input_size=embed_size,
hidden_size=num_hiddens,
num_layers=num_layers,
has_bias=True,
bidirectional=bidirectional,
dropout=0.0)
self.h, self.c = lstm_default_state(batch_size, num_hiddens, num_layers, bidirectional)
self.concat = P.Concat(1)

78
tests/st/ops/cpu/test_lstm_op.py
View File

@ -12,6 +12,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
import math
import pytest
import numpy as np
@ -20,12 +21,83 @@ import mindspore.context as context
from mindspore.common.api import ms_function
from mindspore.common.initializer import initializer
from mindspore.ops import composite as C
from mindspore.ops import operations as P
from mindspore.common.tensor import Tensor
from mindspore.common.parameter import ParameterTuple, Parameter
context.set_context(mode=context.GRAPH_MODE, device_target='CPU')
class StackLSTM(nn.Cell):
"""
Stack multi-layers LSTM together.
"""
def __init__(self,
input_size,
hidden_size,
num_layers=1,
has_bias=True,
batch_first=False,
dropout=0.0,
bidirectional=False):
super(StackLSTM, self).__init__()
self.num_layers = num_layers
self.batch_first = batch_first
self.transpose = P.Transpose()
# direction number
num_directions = 2 if bidirectional else 1
# input_size list
input_size_list = [input_size]
for i in range(num_layers - 1):
input_size_list.append(hidden_size * num_directions)
# layers
layers = []
for i in range(num_layers):
layers.append(nn.LSTMCell(input_size=input_size_list[i],
hidden_size=hidden_size,
has_bias=has_bias,
batch_first=batch_first,
bidirectional=bidirectional,
dropout=dropout))
# weights
weights = []
for i in range(num_layers):
# weight size
weight_size = (input_size_list[i] + hidden_size) * num_directions * hidden_size * 4
if has_bias:
bias_size = num_directions * hidden_size * 4
weight_size = weight_size + bias_size
# numpy weight
stdv = 1 / math.sqrt(hidden_size)
w_np = np.random.uniform(-stdv, stdv, (weight_size, 1, 1)).astype(np.float32)
# lstm weight
weights.append(Parameter(initializer(Tensor(w_np), w_np.shape), name="weight" + str(i)))
#
self.lstms = layers
self.weight = ParameterTuple(tuple(weights))
def construct(self, x, hx):
"""construct"""
if self.batch_first:
x = self.transpose(x, (1, 0, 2))
# stack lstm
h, c = hx
hn = cn = None
for i in range(self.num_layers):
x, hn, cn, _, _ = self.lstms[i](x, h[i], c[i], self.weight[i])
if self.batch_first:
x = self.transpose(x, (1, 0, 2))
return x, (hn, cn)
class LstmNet(nn.Cell):
def __init__(self, batch_size, input_size, hidden_size, num_layers, has_bias, bidirectional, dropout):
super(LstmNet, self).__init__()
@ -34,7 +106,7 @@ class LstmNet(nn.Cell):
if bidirectional:
num_directions = 2
self.lstm = nn.LSTM(input_size, hidden_size, num_layers, has_bias, bidirectional, dropout)
self.lstm = StackLSTM(input_size, hidden_size, num_layers, has_bias, bidirectional, dropout)
input_np = np.array([[[0.6755, -1.6607, 0.1367], [0.4276, -0.7850, -0.3758]],
[[-0.6424, -0.6095, 0.6639], [0.7918, 0.4147, -0.5089]],
[[-1.5612, 0.0120, -0.7289], [-0.6656, -0.6626, -0.5883]],
@ -137,7 +209,7 @@ class MultiLayerBiLstmNet(nn.Cell):
if bidirectional:
num_directions = 2
self.lstm = nn.LSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers, has_bias=has_bias,
self.lstm = StackLSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers, has_bias=has_bias,
bidirectional=bidirectional, dropout=dropout)
input_np = np.array([[[-0.1887, -0.4144, -0.0235, 0.7489, 0.7522, 0.5969, 0.3342, 1.2198, 0.6786, -0.9404],
@ -264,7 +336,7 @@ class Net(nn.Cell):
bih = np.zeros((1, 8)).astype(np.float32)
w_np = np.concatenate((wih, whh, bih), axis=1).reshape([-1, 1, 1])
self.w = Parameter(initializer(Tensor(w_np), w_np.shape), name='weight0')
self.lstm = nn.LSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers,
self.lstm = StackLSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers,
has_bias=has_bias, bidirectional=bidirectional, dropout=dropout)
self.lstm.weight = ParameterTuple(tuple([self.w]))