def sample_sequence(model,
context,
num_samples=1,
temperature=1,
top_k=0,
top_p=0.0,
repetition_penalty=1.0,
device='cpu',
tokenizer=None):
context = torch.tensor(context, dtype=torch.long, device=device)
context = context.unsqueeze(0).repeat(num_samples, 1)
generated = context.clone().detach()
prev_generated = generated
past = None
with torch.no_grad():
while True:
output, past = model(context, past=past)
next_token_logits = output[:, -1, :] / (temperature
if temperature > 0 else 1.)
# repetition penalty from CTRL (https://arxiv.org/abs/1909.05858)
for i in range(num_samples):
for _ in set(generated[i].tolist()):
next_token_logits[i, _] /= repetition_penalty
filtered_logits = top_k_top_p_filtering(next_token_logits,
top_k=top_k,
top_p=top_p)
if temperature == 0: # greedy sampling:
next_token = torch.argmax(filtered_logits,
dim=-1).unsqueeze(-1)
else:
next_token = torch.multinomial(F.softmax(filtered_logits,
dim=-1),
num_samples=1)
context = next_token
generated = torch.cat((generated, next_token), dim=1)
eos = False
for o in next_token.tolist():
text = tokenizer.decode(o, clean_up_tokenization_spaces=True)
print(text, end="", flush=True)
if '.' in text:
eos = True
while eos:
print()
raw_text = input('> ')
if raw_text == 'quit':
return
if raw_text == 'revert':
generated = prev_generated
context = generated
past = None
continue
prev_generated = generated
eos = False
if raw_text != '':
next_input = tokenizer.encode(' ' + raw_text,
add_special_tokens=False)
next_input = torch.tensor(next_input,
dtype=torch.long,
device=device)
next_input = next_input.unsqueeze(0).repeat(num_samples, 1)
generated = torch.cat((generated, next_input), dim=1)
context = generated
past = None
if past and past[0].size()[3] > MAX_PAST:
past = None
context_len = MAX_PAST - BUFFER_SIZE
context_start = generated.size()[1] - context_len
context = torch.narrow(generated, 1, context_start,
context_len)
def forward(self, x):
a = torch.tensor([[1., 2., 3.], [4., 5., 6.]])
b = torch.narrow(a, 0, 0, 1)
return b + x
def forward(self, input):
return torch.narrow(input, 0, 0, 2)
def seg(self, inputs: List[str]):
tokenizerd = self.tokenizer.batch_encode_plus(inputs,
return_tensors='pt',
padding=True)
input_ids = tokenizerd['input_ids'].to(self.device)
attention_mask = tokenizerd['attention_mask'].to(self.device)
token_type_ids = tokenizerd['token_type_ids'].to(self.device)
length = torch.sum(attention_mask, dim=-1) - 2
pretrained_output, *_ = self.model.pretrained(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids)
# remove [CLS] [SEP]
word_cls = pretrained_output[:, :1]
char_input = torch.narrow(pretrained_output, 1, 1,
pretrained_output.size(1) - 2)
segment_output = torch.argmax(self.model.seg_decoder(char_input),
dim=-1).cpu().numpy()
segment_output = self._convert_idx_to_name(segment_output, length,
self.seg_vocab)
# todo: performance -- maybe cython / c++ / rust
sentences = []
word_idx = []
word_length = []
for source_text, encoding, sentence_seg_tag in zip(
inputs, tokenizerd.encodings, segment_output):
text = [
source_text[start:end] for start, end in encoding.offsets[1:-1]
if end != 0
]
last_word = 0
for idx, word in enumerate(encoding.words[1:-1]):
if word is None or is_chinese_char(text[idx][-1]):
continue
if word != last_word:
text[idx] = ' ' + text[idx]
last_word = word
else:
sentence_seg_tag[idx] = WORD_MIDDLE
entities = get_entities(sentence_seg_tag)
word_length.append(len(entities))
sentences.append([
''.join(text[entity[1]:entity[2] + 1]).strip()
for entity in entities
])
word_idx.append(
torch.as_tensor([entity[1] for entity in entities],
device=self.device))
word_idx = torch.nn.utils.rnn.pad_sequence(word_idx, batch_first=True)
word_idx = word_idx.unsqueeze(-1).expand(-1, -1, char_input.shape[-1])
word_input = torch.gather(char_input, dim=1, index=word_idx)
word_cls_input = torch.cat([word_cls, word_input], dim=1)
word_cls_mask = length_to_mask(
torch.as_tensor(word_length, device=self.device) + 1)
word_cls_mask[:, 0] = False # ignore the first token of each sentence
return sentences, {
'word_cls': word_cls,
'word_input': word_input,
'word_length': word_length,
'word_cls_input': word_cls_input,
'word_cls_mask': word_cls_mask
}
def forward(self, p_vects, q_vects, p_frames_mask, q_frames_mask,
num_phones_mask):
'''
p/q_vects = [num_speakers X num_feats X max_num_mfcc_frames x mfcc_dim]
p/q_lengths = [num_speakers X num_feats] -> stores the number of observed
frames associated
with the corresponding phone
p/q_frames_mask = [num_speakers X num_feats X max_num_mfcc_frames x mfcc_dim]
-> The associated 0s and 1s mask of p/q_lengths
num_phones_mask = [num_speakers X num_feats],
with a 0 corresponding to position that should be -1 (no phones observed)
and a 1 everywhere else.
n.b. mfcc_dim = 13 usually (using c0 for energy instead of log-energy)
num_feats = 46*47*0.5 = 1128 usually
max_num_mfcc_frames = the maximum number of frames associated
with a particular phone for any speaker -> often set to 4000
'''
# Apply the attack
noise = torch.exp(self.noise_root)
# Need to add spectral noise
# Pad to spectral dimension
padding = torch.zeros(p_vects.size(0), p_vects.size(1),
p_vects.size(2), self.spectral_dim -
self.mfcc_dim).to(self.device)
padded_p_vects = torch.cat((p_vects, padding), 3)
padded_q_vects = torch.cat((q_vects, padding), 3)
# Apply inverse dct
log_spectral_p = dct.idct(padded_p_vects)
log_spectral_q = dct.idct(padded_q_vects)
# Apply inverse log
spectral_p = torch.exp(log_spectral_p)
spectral_q = torch.exp(log_spectral_q)
# Add the adversarial attack noise
attacked_spectral_p = spectral_p + noise
attacked_spectral_q = spectral_q + noise
# Apply the log
attacked_log_spectral_p = torch.log(attacked_spectral_p)
attacked_log_spectral_q = torch.log(attacked_spectral_q)
# Apply the dct
attacked_padded_p = dct.dct(attacked_log_spectral_p)
attacked_padded_q = dct.dct(attacked_log_spectral_q)
# Truncate to mfcc dimension
p_vects_attacked = torch.narrow(attacked_padded_p, 3, 0, self.mfcc_dim)
q_vects_attacked = torch.narrow(attacked_padded_q, 3, 0, self.mfcc_dim)
# Apply mask of zeros/ones, to ensure spectral noise only applied up to p/q lengths
p_vects_masked = p_vects_attacked * p_frames_mask
q_vects_masked = q_vects_attacked * q_frames_mask
# Compute the p/q_means tensor and covariance tensor
p_means, p_covariances, q_means, q_covariances = self.get_pq_means_covs(
p_vects_masked, q_vects_masked, p_frames_mask, q_frames_mask,
num_phones_mask)
# add small noise to all covariance matrices to ensure they are non-singular
p_covariances_noised = p_covariances + (1e-2 *
torch.eye(13).to(self.device))
q_covariances_noised = q_covariances + (1e-2 *
torch.eye(13).to(self.device))
# print(p_covariances_noised[0,3,:,:])
# print(q_covariances_noised[1,4,:,:])
# Pass through trained model
trained_model = torch.load(self.trained_model_path)
trained_model.to(self.device)
trained_model.eval()
y = trained_model(p_means, p_covariances_noised, q_means,
q_covariances_noised, num_phones_mask)
return y
def forward(ctx, input, input_mask, self, grads, layer_id, attn_qkvw,
attn_qkvb, attn_ow, attn_ob, attn_nw, attn_nb, inter_w,
inter_b, output_w, output_b, norm_w, norm_b, config):
cuda_module = stochastic_transformer_cuda_module if config.stochastic_mode else transformer_cuda_module
forward_func = cuda_module.forward_fp16 if config.fp16 else cuda_module.forward_fp32
inp_size = input.size()
if inp_size[1] % 16 != 0:
input = torch.cat(
(input,
torch.randn(
(inp_size[0], (16 - (inp_size[1] % 16)), inp_size[2]),
device=input.device,
dtype=input.dtype)), 1)
input_mask = torch.cat((input_mask, torch.ones((inp_size[0], input_mask.shape[1], input_mask.shape[2], \
(16 - (inp_size[1] % 16))), device=input_mask.device, dtype=input_mask.dtype) * -10000), 3)
(output, inp_norm, qkv_tf, soft_inp, ctx_bufB, attn_o_inp, add_res,
ff1_inp, gelu_inp, ff2_inp, attn_prob_dropout_mask,
attn_output_dropout_mask, layer_output_dropout_mask,
attn_layer_norm_var, attn_layer_norm_mean,
layer_norm_var, layer_norm_mean) = forward_func(
config.layer_id, input, input_mask, attn_qkvw, attn_qkvb, attn_ow,
attn_ob, attn_nw, attn_nb, inter_w, inter_b, output_w, output_b,
norm_w, norm_b, config.training, config.pre_layer_norm,
config.attn_dropout_checkpoint, config.normalize_invertible,
config.gelu_checkpoint)
# For testing only.
if grads is not None:
for i in [2]:
attn_qkvw.register_hook(
lambda x, i=i, self=self: grads.append([
x[i * attn_ow.size(0):(i + 1) * attn_ow.size(0)],
("Q_W" if i == 0 else "K_W" if i == 1 else "V_W")
]))
for i in [2]:
attn_qkvb.register_hook(
lambda x, i=i, self=self: grads.append([
x[i * attn_ow.size(0):(i + 1) * attn_ow.size(0)],
("Q_B" if i == 0 else "K_B" if i == 1 else "V_B")
]))
attn_ow.register_hook(
lambda x, self=self: grads.append([x, "O_W"]))
attn_ob.register_hook(
lambda x, self=self: grads.append([x, "O_B"]))
attn_nw.register_hook(
lambda x, self=self: grads.append([x, "N2_W"]))
attn_nb.register_hook(
lambda x, self=self: grads.append([x, "N2_B"]))
inter_w.register_hook(
lambda x, self=self: grads.append([x, "int_W"]))
inter_b.register_hook(
lambda x, self=self: grads.append([x, "int_B"]))
output_w.register_hook(
lambda x, self=self: grads.append([x, "out_W"]))
output_b.register_hook(
lambda x, self=self: grads.append([x, "out_B"]))
norm_w.register_hook(
lambda x, self=self: grads.append([x, "norm_W"]))
norm_b.register_hook(
lambda x, self=self: grads.append([x, "norm_B"]))
if config.is_grad_enabled and config.training:
if (config.pre_layer_norm and config.normalize_invertible):
ctx.save_for_backward(input_mask, attn_qkvw, attn_qkvb,
attn_ow, attn_ob, attn_nw, attn_nb,
inter_w, inter_b, output_w, output_b,
norm_w, norm_b)
else:
ctx.save_for_backward(output, input, input_mask, attn_qkvw,
attn_qkvb, attn_ow, attn_ob, attn_nw,
attn_nb, inter_w, inter_b, output_w,
output_b, norm_w, norm_b)
ctx.config = config
if (config.pre_layer_norm or not config.normalize_invertible):
ctx.inp_norm = inp_norm
ctx.qkv_tf = qkv_tf
ctx.soft_inp = soft_inp
if not config.attn_dropout_checkpoint:
ctx.ctx_bufB = ctx_bufB
ctx.attn_o_inp = attn_o_inp
if not config.normalize_invertible:
ctx.add_res = add_res
ctx.attn_layer_norm_mean = attn_layer_norm_mean
ctx.layer_norm_mean = layer_norm_mean
ctx.ff1_inp = ff1_inp
if not config.gelu_checkpoint:
ctx.gelu_inp = gelu_inp
ctx.ff2_inp = ff2_inp
ctx.attn_prob_dropout_mask = attn_prob_dropout_mask
ctx.attn_output_dropout_mask = attn_output_dropout_mask
ctx.layer_output_dropout_mask = layer_output_dropout_mask
ctx.attn_layer_norm_var = attn_layer_norm_var
ctx.layer_norm_var = layer_norm_var
if inp_size[1] % 16 != 0:
output = torch.narrow(output, 1, 0, inp_size[1])
if config.huggingface:
return (output, ) # outputs -> (output) : outputs[0] = output
else:
return output
def forward(self,
input_volume,
last_s=None,
input_action=None,
input_motion=None,
next_mask=False,
no_warp=False):
B, _, S1, S2, S3 = input_volume.size()
K = self.K
device = input_volume.device
output = {}
input = torch.cat(
(input_volume, self.coord_feature.expand(B, -1, -1, -1,
-1).to(device)),
dim=1)
input = torch.cat((input, last_s), dim=1) # aggregate history
volume_embedding, cache = self.volume_encoder(input)
mask_feature = self.feature_decoder(volume_embedding, cache)
if self.motion_type == 'conv':
motion = self.motion_decoder(mask_feature, input_action)
output['motion'] = motion
return output
assert (self.motion_type == 'se3')
logit, mask = self.mask_decoder(mask_feature)
output['init_logit'] = logit
transform_param = self.transform_decoder(mask_feature, input_action)
# trans, pivot: [B, K-1, 3]
# rot_matrix: [B, K-1, 3, 3]
trans_vec, rot_mat = self.se3(transform_param)
mask_object = torch.narrow(mask, 1, 0, K - 1)
sum_mask = torch.sum(mask_object, dim=(2, 3, 4))
heatmap = torch.unsqueeze(mask_object, dim=2) * self.grids.to(device)
pivot_vec = torch.sum(heatmap, dim=(3, 4, 5)) / torch.unsqueeze(
sum_mask, dim=2)
# [Important] The last one is the background!
trans_vec = torch.cat(
[trans_vec, self.zero_vec.expand(B, -1, -1).to(device)],
dim=1).unsqueeze(-1)
rot_mat = torch.cat(
[rot_mat, self.eye_mat.expand(B, 1, -1, -1).to(device)], dim=1)
pivot_vec = torch.cat(
[pivot_vec, self.zero_vec.expand(B, -1, -1).to(device)],
dim=1).unsqueeze(-1)
grids_flat = self.grids_flat.to(device)
grids_after_flat = rot_mat @ (grids_flat -
pivot_vec) + pivot_vec + trans_vec
motion = (grids_after_flat - grids_flat).view([B, K, 3, S1, S2, S3])
motion = torch.sum(motion * torch.unsqueeze(mask, 2), 1)
output['motion'] = motion
if no_warp:
output['s'] = mask_feature
elif input_motion is not None:
mask_feature_warp = self.forward_warp(
mask_feature, input_motion, torch.sum(mask[:, :-1, ], dim=1))
output['s'] = mask_feature_warp
else:
mask_feature_warp = self.forward_warp(
mask_feature, motion, torch.sum(mask[:, :-1, ], dim=1))
output['s'] = mask_feature_warp
if next_mask:
mask_warp = self.forward_warp(mask, motion,
torch.sum(mask[:, :-1, ], dim=1))
output['next_mask'] = mask_warp
return output
def one_label_loss(gt_percent, predict, moe, batch_node_num):
"""
Proposed Loss Function
Our proposed Loss Functions calculates cost of training batch using
-GCN's output graphs and weak image level annotations.
For more information, please refer to our paper.
Keyword arguments:
gt_percent --Ground-Trueth percent, a weak image-level annotation
predict --GCN module output, gradient required
moe --Margin of Error, a weak image-level annotation
batch_node_num --integer list of node numbers per image in batch
"""
curr_index = 0
batch_top_k_loss = []
batch_bottom_k_loss = []
batch_pairwise_loss = []
positive_num = 0.00000001
negative_num = 0.00000001
for i in range(len(gt_percent)):
total_length = batch_node_num[i] #one graph length
predict_slice = torch.narrow(input = predict, dim = 0, start = curr_index, length = total_length)
curr_index += total_length
one_gt_percent = gt_percent[i]
one_moe = moe[i]
select = torch.tensor([0])
if use_cuda:
select = select.to('cuda')
threshold_ceil = int(total_length * (one_gt_percent - one_moe)) #100 * (0.8 - 0.1) = top 70 %
if threshold_ceil < 0:
threshold_ceil = 0
threshold_floor = int(total_length * (1.0 - one_gt_percent - one_moe)) #100 * (1 - 0.8 - 0.1) = bottom 10 %
if threshold_floor < 0:
threshold_floor = 0
top_k, _ = torch.topk(input = predict_slice, k = threshold_ceil, dim = 0, largest = True, sorted = False)
bottom_k, _ = torch.topk(input = predict_slice, k = threshold_floor, dim = 0, largest = False, sorted = False)
top_k_mean = torch.mean(top_k,dim=0)
bottom_k_mean = torch.mean(bottom_k,dim=0)
predict_slice = None
top_k = None
select = None
bottom_k = None
loss_fn = nn.SmoothL1Loss()
if use_cuda:
temp_ones = torch.ones(1, dtype = torch.float).to('cuda')
temp_zeros = torch.tensor([-1], dtype = torch.float).to('cuda')
temp_ground = torch.zeros(1, dtype = torch.float).to('cuda')
if threshold_ceil > 0:
#top_k_loss = F.l1_loss(top_k_mean, temp_ones)
top_k_loss = loss_fn(top_k_mean, temp_ones)
positive_num += top_k_loss.detach().cpu().numpy()
else:
top_k_loss = None
if threshold_floor > 0:
#bottom_k_loss = F.l1_loss(bottom_k_mean, temp_zeros)
bottom_k_loss = loss_fn(bottom_k_mean, temp_zeros)
negative_num += bottom_k_loss.detach().cpu().numpy()
else:
bottom_k_loss = None
temp_ones = None
temp_zeors = None
else:
if threshold_ceil > 0:
#top_k_loss = F.l1_loss(top_k_mean, torch.ones(1, dtype = torch.float))
top_k_loss = loss_fn(top_k_mean, torch.ones(1, dtype = torch.float))
positive_num += 1.0
else:
top_k_loss = None
if threshold_floor > 0:
#bottom_k_loss = F.l1_loss(bottom_k_mean, torch.zeros(1, dtype = torch.float))
bottom_k_loss = loss_fn(bottom_k_mean, torch.zeros(1, dtype = torch.float))
negative_num += 1.0
else:
bottom_k_loss = None
batch_top_k_loss.append(top_k_loss)
batch_bottom_k_loss.append(bottom_k_loss)
top_k_loss = None
bottom_k_loss = None
pairwise_loss = None
print("-------------------------------------------------------------------------------")
print("Targeted Regions Losses Per Image")
print([round(float(x.data.cpu().detach().numpy()),2) if x is not None else -1.00 for x in batch_top_k_loss])
print("Background Regions Losses Per Image")
print([round(float(x.data.cpu().detach().numpy()),2) if x is not None else -1.00 for x in batch_bottom_k_loss])
print("-------------------------------------------------------------------------------")
for t, b, g, a in zip(batch_top_k_loss, batch_bottom_k_loss, gt_percent, moe):
if top_k_loss is None and t is not None:
top_k_loss = (g - a) * t
elif t is not None:
top_k_loss += (g - a) * t
if bottom_k_loss is None and b is not None:
bottom_k_loss = (1.0 - g - a) * b
elif b is not None:
bottom_k_loss += (1.0 - g - a) * b
return top_k_loss, bottom_k_loss
def train_text2mel(load_trained):
# create log dir
logdir = os.path.join(Hyper.logdir, "text2mel")
if not os.path.exists(logdir):
os.makedirs(logdir)
if not os.path.exists(os.path.join(logdir, "pkg")):
os.mkdir(os.path.join(logdir, "pkg"))
# device
device = Hyper.device_text2mel
graph = Text2Mel().to(device)
# set the training flag
graph.train()
# load data and get batch maker
names, lengths, texts = load_data()
batch_maker = BatchMaker(Hyper.batch_size, names, lengths, texts)
criterion_mels = nn.L1Loss().to(device)
criterion_bd1 = nn.BCEWithLogitsLoss().to(device)
criterion_atten = nn.L1Loss().to(device)
optimizer = torch.optim.Adam(graph.parameters(),
lr=Hyper.adam_alpha,
betas=Hyper.adam_betas,
eps=Hyper.adam_eps)
lossplot_mels = LogHelper("mel_l1", logdir)
lossplot_bd1 = LogHelper("mel_BCE", logdir)
lossplot_atten = LogHelper("atten", logdir)
dynamic_guide = float(Hyper.guide_weight)
global_step = 0
# check if load
if load_trained > 0:
print("load model trained for {}k batches".format(load_trained))
global_step = load(
os.path.join(logdir, "pkg/save_{}k.pkg".format(load_trained)),
graph, {
"mels": criterion_mels,
"bd1": criterion_bd1,
"atten": criterion_atten
}, optimizer)
dynamic_guide *= Hyper.guide_decay**(load_trained * 1000)
evaluator = Evaluator()
for loop_cnt in range(
int(Hyper.num_batches / batch_maker.num_batches() + 0.5)):
print("loop", loop_cnt)
bar = PrettyBar(batch_maker.num_batches())
bar.set_description("training...")
loss_str0 = MovingAverage()
loss_str1 = MovingAverage()
loss_str2 = MovingAverage()
for bi in bar:
batch = batch_maker.next_batch()
# make batch
texts = torch.LongTensor(batch["texts"]).to(device)
# shift mel
shift_mels = torch.FloatTensor(
np.concatenate((np.zeros(
(batch["mels"].shape[0], batch["mels"].shape[1], 1)),
batch["mels"][:, :, :-1]),
axis=2)).to(device)
# ground truth
mels = torch.FloatTensor(batch["mels"]).to(device)
# forward
pred_logits, pred_mels = graph(texts, shift_mels)
# loss
if False:
loss_mels = sum(
criterion_mels(
torch.narrow(pred_mels[i], -1, 0, batch["mel_lengths"]
[i]),
torch.narrow(mels[i], -1, 0, batch["mel_lengths"][i]))
for i in range(batch_maker.batch_size())) / float(
batch_maker.batch_size())
loss_bd1 = sum(
criterion_bd1(
torch.narrow(pred_logits[i], -1, 0,
batch["mel_lengths"][i]),
torch.narrow(mels[i], -1, 0, batch["mel_lengths"][i]))
for i in range(batch_maker.batch_size())) / float(
batch_maker.batch_size())
else:
loss_mels = criterion_mels(pred_mels, mels)
loss_bd1 = criterion_bd1(pred_logits, mels)
# guide attention
atten_guide = torch.FloatTensor(batch["atten_guides"]).to(device)
atten_mask = torch.FloatTensor(batch["atten_masks"]).to(device)
atten_mask = torch.ones_like(graph.attention)
loss_atten = criterion_atten(
atten_guide * graph.attention * atten_mask,
torch.zeros_like(graph.attention)) * dynamic_guide
loss = loss_mels + loss_bd1 + loss_atten
# backward
graph.zero_grad()
optimizer.zero_grad()
loss.backward()
# clip grad
nn.utils.clip_grad_value_(graph.parameters(), 1)
optimizer.step()
# log
loss_str0.add(loss_mels.cpu().data.mean())
loss_str1.add(loss_bd1.cpu().data.mean())
loss_str2.add(loss_atten.cpu().data.mean())
lossplot_mels.add(loss_str0(), global_step)
lossplot_bd1.add(loss_str1(), global_step)
lossplot_atten.add(loss_str2(), global_step)
# adjust dynamic_guide
# dynamic_guide = float((loss_mels + loss_bd1).cpu().data.mean() / loss_atten.cpu().data.mean())
dynamic_guide *= Hyper.guide_decay
if dynamic_guide < Hyper.guide_lowbound:
dynamic_guide = Hyper.guide_lowbound
bar.set_description(
"gs: {}, mels: {}, bd1: {}, atten: {}, scale: {}".format(
global_step, loss_str0(), loss_str1(), loss_str2(),
"%4f" % dynamic_guide))
if global_step % Hyper.synth_freq == 0:
evaluator.evaluate(loop_cnt)
evaluator.export()
# plot
if global_step % 100 == 0:
gs = 0
plot_spectrum(mels[0].cpu().data, "mel_true", gs, dir=logdir)
plot_spectrum(shift_mels[0].cpu().data,
"mel_input",
gs,
dir=logdir)
plot_spectrum(pred_mels[0].cpu().data,
"mel_pred",
gs,
dir=logdir)
plot_spectrum(graph.query[0].cpu().data,
"query",
gs,
dir=logdir)
plot_attention(graph.attention[0].cpu().data,
"atten",
gs,
True,
dir=logdir)
plot_attention((atten_guide)[0].cpu().data,
"atten_guide",
gs,
True,
dir=logdir)
if global_step % 500 == 0:
lossplot_mels.plot()
lossplot_bd1.plot()
lossplot_atten.plot()
if global_step % 10000 == 0:
save(
os.path.join(logdir, "pkg/save_{}k.pkg").format(
global_step // 1000), graph, {
"mels": criterion_mels,
"bd1": criterion_bd1,
"atten": criterion_atten
}, optimizer, global_step, True)
# increase global step
global_step += 1
def tb(a):
return torch.narrow(a, 3, 1, N - k)
def forward(ctx, world_size, start_pos, chunk_size, weight, pg, bias):
ctx.weight = weight
ctx.pg = pg
ctx.world_size = world_size
return torch.narrow(bias, 0, start_pos, chunk_size)
def tf(a):
return torch.narrow(a, 3, 0, N - k)
def _dp(self, arc_scores, lengths=None, force_grad=False):
semiring = self.semiring
arc_scores = _convert(arc_scores)
arc_scores, batch, N, lengths = self._check_potentials(
arc_scores, lengths)
DIRS = 2
alpha = [
self._make_chart(2, (DIRS, batch, N, N), arc_scores, force_grad)
for _ in range(2)
]
def stack(a, b):
return torch.stack([a, b], dim=1)
def sstack(a):
return torch.stack([a, a], dim=1)
arcs = [
self._make_chart(1, (DIRS, batch, N - k), arc_scores,
force_grad)[0] for k in range(N)
]
# Inside step. assumes first token is root symbol
semiring.one_(alpha[A][C][:, :, :, :, 0].data)
semiring.one_(alpha[B][C][:, :, :, :, -1].data)
k = 0
AIR = alpha[A][I][:, R, :, :N - k, 1:k]
BIL = alpha[B][I][:, L, :, k:N, N - k:N - 1]
k = 1
AC2 = alpha[A][C][:, :, :, :N - k, :k]
BC2 = alpha[B][C][:, :, :, k:, N - k:]
AC, BC, AC_next = None, None, None
ends = [None]
for k in range(1, N):
def tf(a):
return torch.narrow(a, 3, 0, N - k)
def tb(a):
return torch.narrow(a, 3, 1, N - k)
f = torch.arange(N - k), torch.arange(k, N)
if k > 1:
AC2 = torch.cat([tf(AC), tf(AC_next).unsqueeze(-1)], dim=4)
if k > 1:
BC2 = torch.cat([tb(AC_next).unsqueeze(-1), tb(BC)], dim=4)
ACL, ACR = AC2.unbind(dim=1)
BCL, BCR = BC2.unbind(dim=1)
start = semiring.dot(BCL, ACR)
# if k == 1:
arcs[k] = stack(
semiring.times(start, arc_scores[:, :, f[1], f[0]]),
semiring.times(start, arc_scores[:, :, f[0], f[1]]),
)
arcsL, arcR = arcs[k].unbind(dim=1)
# else:
# arcs[k] = stack(semiring.times(start), #, arc_scores[:, f[1], f[0]]),
# semiring.times(start)) #, arc_scores[:, f[0], f[1]]))
AIR2 = torch.cat(
[torch.narrow(AIR, 2, 0, N - k),
arcR.unsqueeze(-1)], dim=3)
BIL2 = torch.cat(
[arcsL.unsqueeze(-1),
torch.narrow(BIL, 2, 1, N - k)], dim=3)
AC_next = stack(semiring.dot(ACL, BIL2), semiring.dot(AIR2, BCR))
ends.append(AC_next[:, R, :, 0])
AC = AC2
BC = BC2
AIR = AIR2
BIL = BIL2
v = torch.stack([ends[l][:, i] for i, l in enumerate(lengths)], dim=1)
# v = torch.stack([alpha[A][C][R, i, 0, l] for i, l in enumerate(lengths)])
return (semiring.unconvert(v), arcs[1:], alpha)
def narrow(self, dim, start, length):
tensor = torch.narrow(self, dim, start, length)
tensor.dtype = self.dtype
return tensor
def showtensor(tensor):
x = torch.narrow(tensor, 0, 0, 1)
plt.figure()
plt.imshow(x.squeeze().numpy())
plt.show()
def forward(self, input_ids=None, attention_mask=None, token_type_ids=None,
position_ids=None, head_mask=None, inputs_embeds=None, example_idx=None, extend=True):
group_ids = None
output_length = len(input_ids) if input_ids is not None else len(inputs_embeds)
if extend and not self.training:
# use the hook
input_ids, attention_mask, token_type_ids, position_ids, head_mask, inputs_embeds, example_idx, group_ids, group_sizes =\
self.extend_batch_examples_eval(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
example_idx=example_idx)
if not extend and input_ids is not None and inputs_embeds is not None:
inputs_embeds=None
result_logits = None
for i in range(0,attention_mask.shape[0], self.hparams.batch_size):
bs = min(self.hparams.batch_size, attention_mask.shape[0]-i)
if input_ids is not None:
batch_input_ids=input_ids.narrow(0,i,bs)
else:
batch_input_ids = None
if inputs_embeds is not None:
batch_inputs_embeds=inputs_embeds.narrow(0,i,bs)
else:
batch_inputs_embeds = None
batch_attention_mask=attention_mask.narrow(0,i,bs)
batch_token_type_ids=token_type_ids.narrow(0,i,bs)
if position_ids is not None:
batch_position_ids=position_ids.narrow(0,i,bs)
else:
batch_position_ids = None
if head_mask is not None:
batch_head_mask = head_mask.narrow(0,i,bs)
else:
batch_head_mask = None
logits = LightningBertForSequenceClassification.forward(self,
input_ids=batch_input_ids,
attention_mask=batch_attention_mask,
token_type_ids=batch_token_type_ids,
position_ids=batch_position_ids,
head_mask=batch_head_mask,
inputs_embeds=batch_inputs_embeds)
if result_logits is None:
result_logits = logits
else:
result_logits = torch.cat((result_logits, logits), dim=0)
logits = result_logits
#
# time to vote
# Makes big empty tensor for all groups
# uses torch.view to update individual group
#
if group_ids is not None:
# prepare a couple of output tensors of the right dimensions
avg_logits = torch.zeros(output_length, self.num_labels).to(self.device)
counted_logits = torch.zeros(output_length, self.num_labels).to(self.device)
original_logits = logits[:output_length]
# now go through the whole extended batch
for i, (logit, group_id) in enumerate(zip(logits, group_ids)):
# first, tally logits by averaging across replacement groups
current_group_logits = torch.narrow(avg_logits, 0, group_id, 1)
torch.add(current_group_logits, torch.div(logit, group_sizes[group_id]), out=current_group_logits)
# but also, record the individual VOTES (argmax)
current_vote = torch.argmax(logit).item()
counted_logits[group_id, current_vote] += 1/group_sizes[group_id]
# let us know what is happening here
self._debug_print_vote(i, group_id, logit, example_idx)
# print the results for this batch
self._debug_print_votes(original_logits, avg_logits, counted_logits)
if self.hparams.vote_avg_logits:
logits = avg_logits
else:
logits = counted_logits
#
# return whatever we have at this point
#
return logits
def diff(a, dim=0, out=None, func=torch.not_equal):
sz = a.size(dim) - 1
if out is None:
out = torch.empty(sz, dtype=torch.bool, device=a.device)
return func(torch.narrow(a, dim, 1, sz), torch.narrow(a, dim, 0, sz), out=out)
def forward(
self,
x,
encoder_out=None,
encoder_padding_mask=None,
incremental_state=None,
prev_self_attn_state=None,
prev_attn_state=None,
self_attn_mask=None,
self_attn_padding_mask=None,
):
"""
Args:
x (Tensor): input to the layer of shape `(seq_len, batch, embed_dim)`
encoder_padding_mask (ByteTensor): binary ByteTensor of shape
`(batch, src_len)` where padding elements are indicated by ``1``.
Returns:
encoded output of shape `(batch, src_len, embed_dim)`
"""
# for layer in self.layers:
# x, attn = layer(
# x,
# encoder_out['encoder_out'] if encoder_out is not None else None,
# encoder_out['encoder_padding_mask'] if encoder_out is not None else None,
# incremental_state,
# self_attn_mask=self.buffered_future_mask(x) if incremental_state is None else None,
# )
residual = x
x = self.maybe_layer_norm(self.layer_norm_self_attn, x, before=True)
ins = self.fc1(x)
q1 = torch.narrow(ins, -1, 0, self.embed_dim)
k1 = torch.narrow(ins, -1, self.embed_dim, self.embed_dim)
v1 = torch.narrow(ins, -1, 2 * self.embed_dim, self.embed_dim)
if prev_self_attn_state is not None:
if incremental_state is None:
incremental_state = {}
prev_key, prev_value = prev_self_attn_state
saved_state = {"prev_key": prev_key, "prev_value": prev_value}
self.self_attn._set_input_buffer(incremental_state, saved_state)
x, attn = self.self_attn(
q=q1,
k=k1,
v=v1,
key_padding_mask=self_attn_padding_mask,
incremental_state=incremental_state,
need_weights=False,
attn_mask=self_attn_mask,
)
x = self.fc2(x)
x = F.dropout(x, p=self.dropout, training=self.training)
x = residual + x
x = self.maybe_layer_norm(self.layer_norm_self_attn, x, after=True)
if self.encoder_attn is not None:
residual = x
x = self.maybe_layer_norm(self.layer_norm_context_attn,
x,
before=True)
q2 = self.fc3(x)
if prev_attn_state is not None:
if incremental_state is None:
incremental_state = {}
prev_key, prev_value = prev_attn_state
saved_state = {"prev_key": prev_key, "prev_value": prev_value}
self.encoder_attn._set_input_buffer(incremental_state,
saved_state)
x, attn = self.encoder_attn(
q=q2,
key=encoder_out,
value=encoder_out,
key_padding_mask=encoder_padding_mask,
incremental_state=incremental_state,
static_kv=True,
need_weights=(not self.training and self.need_attn),
)
x = self.fc4(x)
x = F.dropout(x, p=self.dropout, training=self.training)
x = residual + x
x = self.maybe_layer_norm(self.layer_norm_context_attn,
x,
after=True)
residual = x
x = self.maybe_layer_norm(self.layer_norm_ffn, x, before=True)
x = self.ffn(x)
x = F.dropout(x, p=self.dropout, training=self.training)
x = residual + x
x = self.maybe_layer_norm(self.layer_norm_ffn, x, after=True)
if self.onnx_trace and incremental_state is not None:
saved_state = self.self_attn._get_input_buffer(incremental_state)
self_attn_state = saved_state["prev_key"], saved_state[
"prev_value"]
return x, attn, self_attn_state
return x, attn
def backward(ctx, grad_output):
bsz = grad_output.shape[0]
grad_output_shape = grad_output.size()
if grad_output_shape[1] % 16 != 0:
grad_output = torch.cat((grad_output, torch.zeros((bsz, (16 - (grad_output_shape[1] % 16)), \
grad_output_shape[2]), device=grad_output.device, dtype=grad_output.dtype)), 1)
assert ctx.config.training
if (ctx.config.pre_layer_norm and ctx.config.normalize_invertible):
(input_mask, attn_qkvw, attn_qkvb, attn_ow, attn_ob, attn_nw,
attn_nb, inter_w, inter_b, output_w, output_b, norm_w,
norm_b) = ctx.saved_tensors
else:
(output, input, input_mask, attn_qkvw, attn_qkvb, attn_ow, attn_ob,
attn_nw, attn_nb, inter_w, inter_b, output_w, output_b, norm_w,
norm_b) = ctx.saved_tensors
cuda_module = stochastic_transformer_cuda_module if ctx.config.stochastic_mode else transformer_cuda_module
backward_func = cuda_module.backward_fp16 if ctx.config.fp16 else cuda_module.backward_fp32
(grad_input, grad_attn_qkvw, grad_attn_qkvb, grad_attn_ow,
grad_attn_ob, grad_attn_nw, grad_attn_nb, grad_inter_w, grad_inter_b,
grad_output_w, grad_output_b,
grad_norm_w, grad_norm_b) = backward_func(
ctx.config.layer_id, grad_output,
(ctx.inp_norm if
(ctx.config.pre_layer_norm
and ctx.config.normalize_invertible) else output),
(ctx.inp_norm if
(ctx.config.pre_layer_norm
or not ctx.config.normalize_invertible) else input), ctx.qkv_tf,
ctx.soft_inp, (ctx.soft_inp if ctx.config.attn_dropout_checkpoint
else ctx.ctx_bufB), ctx.attn_o_inp,
(ctx.ff1_inp if ctx.config.normalize_invertible else ctx.add_res),
ctx.ff1_inp,
(ctx.ff2_inp if ctx.config.gelu_checkpoint else ctx.gelu_inp),
ctx.ff2_inp, ctx.attn_prob_dropout_mask,
ctx.attn_output_dropout_mask, ctx.layer_output_dropout_mask,
ctx.attn_layer_norm_var, ctx.attn_layer_norm_mean,
ctx.layer_norm_var, ctx.layer_norm_mean,
(ctx.inp_norm if
(ctx.config.pre_layer_norm
and ctx.config.normalize_invertible) else input), input_mask,
attn_qkvw, attn_qkvb, attn_ow, attn_ob, attn_nw, attn_nb, inter_w,
inter_b, output_w, output_b, norm_w, norm_b)
# This appears to be an effective way to release context memory
ctx.qkv_tf = None
ctx.soft_inp = None
ctx.ctx_bufB = None
ctx.gelu_inp = None
ctx.ff2_inp = None
ctx.attn_o_inp = None
ctx.ff1_inp = None
ctx.add_res = None
ctx.inp_norm = None
ctx.config = None
ctx.attn_layer_norm_mean = None
ctx.layer_norm_mean = None
ctx.attn_prob_dropout_mask = None
ctx.attn_output_dropout_mask = None
ctx.layer_output_dropout_mask = None
ctx.attn_layer_norm_var = None
ctx.layer_norm_var = None
if grad_output_shape[1] % 16 != 0:
grad_input = torch.narrow(grad_input, 1, 0, grad_output_shape[1])
return (grad_input, None, None, None, None, grad_attn_qkvw,
grad_attn_qkvb, grad_attn_ow, grad_attn_ob, grad_attn_nw,
grad_attn_nb, grad_inter_w, grad_inter_b, grad_output_w,
grad_output_b, grad_norm_w, grad_norm_b, None)
def forward(self, query, key, value, key_padding_mask=None):
"""Input shape: Time x Batch x Channel
Self-attention can be implemented by passing in the same arguments for
query, key and value. Timesteps can be masked by supplying a T x T mask in the
`attn_mask` argument. Padding elements can be excluded from
the key by passing a binary ByteTensor (`key_padding_mask`) with shape:
batch x src_len, where padding elements are indicated by 1s.
"""
tgt_len, bsz, embed_dim = query.size()
assert embed_dim == self.embed_dim
assert list(query.size()) == [tgt_len, bsz, embed_dim]
ins = self.fc1(query)
q = torch.narrow(ins, -1, 0, embed_dim)
k = torch.narrow(ins, -1, embed_dim, embed_dim)
v = torch.narrow(ins, -1, 2 * embed_dim, embed_dim)
q = q * self.scaling
q = q.contiguous().view(tgt_len, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
k = k.contiguous().view(-1, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
v = v.contiguous().view(-1, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
src_len = k.size(1)
# This is part of a workaround to get around fork/join parallelism
# not supporting Optional types.
if key_padding_mask is not None and key_padding_mask.shape == torch.Size(
[]):
key_padding_mask = None
if key_padding_mask is not None:
assert key_padding_mask.size(0) == bsz
assert key_padding_mask.size(1) == src_len
attn_weights = torch.bmm(q, k.transpose(1, 2))
assert list(
attn_weights.size()) == [bsz * self.num_heads, tgt_len, src_len]
if key_padding_mask is not None:
# don't attend to padding symbols
attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len,
src_len)
if self.onnx_trace:
attn_weights = torch.where(
key_padding_mask.unsqueeze(1).unsqueeze(2),
torch.Tensor([float("-Inf")]),
attn_weights.float()).type_as(attn_weights)
else:
attn_weights = attn_weights.float().masked_fill(
key_padding_mask.unsqueeze(1).unsqueeze(2),
float('-inf'),
).type_as(attn_weights) # FP16 support: cast to float and back
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len,
src_len)
attn_weights = utils.softmax(
attn_weights,
dim=-1,
onnx_trace=self.onnx_trace,
).type_as(attn_weights)
attn_weights = F.dropout(attn_weights,
p=self.attention_dropout,
training=self.training)
attn = torch.bmm(attn_weights, v)
assert list(
attn.size()) == [bsz * self.num_heads, tgt_len, self.head_dim]
if (self.onnx_trace and attn.size(1) == 1):
# when ONNX tracing a single decoder step (sequence length == 1)
# the transpose is a no-op copy before view, thus unnecessary
attn = attn.contiguous().view(tgt_len, bsz, embed_dim)
else:
attn = attn.transpose(0,
1).contiguous().view(tgt_len, bsz, embed_dim)
attn = self.fc2(attn)
attn_weights = None
return attn, attn_weights
def _setup_for_real_optimizer(self):
dp_world_size = dist.get_world_size(group=self.dp_process_group)
self.partition_count = [
dp_world_size for i in range(len(self.optimizer.param_groups))
]
for i, param_group in enumerate(self.optimizer.param_groups):
see_memory_usage(f'before initializing group {i}', force=True)
partition_id = dist.get_rank(group=self.real_dp_process_group[i])
# grab the original list
self.bf16_groups.append(param_group['params'])
# create flat bf16 params
self.bf16_groups_flat.append(
self._flatten_dense_tensors_aligned(
self.bf16_groups[i],
self.nccl_start_alignment_factor * dp_world_size))
# Make bf16 params point to flat tensor storage
self._update_storage_to_flattened_tensor(
tensor_list=self.bf16_groups[i],
flat_tensor=self.bf16_groups_flat[i])
# divide flat weights into equal sized partitions
partition_size = self.bf16_groups_flat[i].numel() // dp_world_size
bf16_dp_partitions = [
self.bf16_groups_flat[i].narrow(0, dp_index * partition_size,
partition_size)
for dp_index in range(dp_world_size)
]
self.bf16_partitioned_groups.append(bf16_dp_partitions)
# create fp32 params partition
self.fp32_groups_flat_partition.append(
bf16_dp_partitions[partition_id].clone().float().detach())
self.fp32_groups_flat_partition[i].requires_grad = True
num_elem_list = [t.numel() for t in self.bf16_groups[i]]
# create fp32 gradients
self.fp32_groups_gradients_flat.append(
torch.zeros_like(self.bf16_groups_flat[i],
dtype=torch.float32))
# track individual fp32 gradients for entire model
fp32_gradients = self._split_flat_tensor(
flat_tensor=self.fp32_groups_gradients_flat[i],
num_elem_list=num_elem_list)
self.fp32_groups_gradients.append(fp32_gradients)
# flat tensor corresponding to actual fp32 gradients (i.e., minus alignment padding)
length_without_padding = sum(num_elem_list)
self.fp32_groups_actual_gradients_flat.append(
torch.narrow(self.fp32_groups_gradients_flat[i], 0, 0,
length_without_padding))
# flat tensor corresponding to gradient partition
self.fp32_groups_gradient_flat_partition.append(
torch.narrow(self.fp32_groups_gradients_flat[i], 0,
partition_id * partition_size, partition_size))
# track fp32 gradient updates
self.fp32_groups_has_gradients.append([False] *
len(self.bf16_groups[i]))
# Record padding required for alignment
if partition_id == dist.get_world_size(
group=self.real_dp_process_group[i]) - 1:
padding = self.bf16_groups_flat[i].numel(
) - length_without_padding
else:
padding = 0
self.group_paddings.append(padding)
# update optimizer param groups to reference fp32 params partition
param_group['params'] = [self.fp32_groups_flat_partition[i]]
see_memory_usage(f'after initializing group {i}', force=True)
see_memory_usage('before initialize_optimizer', force=True)
self.initialize_optimizer_states()
see_memory_usage('end initialize_optimizer', force=True)
# Need optimizer states initialized before linking lp to optimizer state
self._link_all_hp_params()
self._param_slice_mappings = self._create_param_mapping()
def forward(self,
q,
key,
value,
key_padding_mask=None,
incremental_state=None,
need_weights=True,
static_kv=False,
attn_mask=None):
"""Input shape: Time x Batch x Channel
Self-attention can be implemented by passing in the same arguments for
query, key and value. Timesteps can be masked by supplying a T x T mask in the
`attn_mask` argument. Padding elements can be excluded from
the key by passing a binary ByteTensor (`key_padding_mask`) with shape:
batch x src_len, where padding elements are indicated by 1s.
"""
qkv_same = False
kv_same = True
tgt_len, bsz, embed_dim = q.size()
assert embed_dim == self.embed_dim
assert list(q.size()) == [tgt_len, bsz, embed_dim]
if incremental_state is not None:
saved_state = self._get_input_buffer(incremental_state)
if 'prev_key' in saved_state:
# previous time steps are cached - no need to recompute
# key and value if they are static
if static_kv:
assert kv_same and not qkv_same
key = value = None
else:
saved_state = None
# encoder-decoder attention
# q = self.in_proj_q(query)
if key is None:
assert value is None
k = v = None
else:
kv = self.kv_fc(key)
k = torch.narrow(kv, -1, 0, self.embed_dim)
v = torch.narrow(kv, -1, self.embed_dim, self.embed_dim)
q *= self.scaling
q = q.contiguous().view(tgt_len, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
if k is not None:
k = k.contiguous().view(-1, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
if v is not None:
v = v.contiguous().view(-1, bsz * self.num_heads,
self.head_dim).transpose(0, 1)
if saved_state is not None:
# saved states are stored with shape (bsz, num_heads, seq_len, head_dim)
if 'prev_key' in saved_state:
prev_key = saved_state['prev_key'].view(
bsz * self.num_heads, -1, self.head_dim)
if static_kv:
k = prev_key
else:
k = torch.cat((prev_key, k), dim=1)
if 'prev_value' in saved_state:
prev_value = saved_state['prev_value'].view(
bsz * self.num_heads, -1, self.head_dim)
if static_kv:
v = prev_value
else:
v = torch.cat((prev_value, v), dim=1)
saved_state['prev_key'] = k.view(bsz, self.num_heads, -1,
self.head_dim)
saved_state['prev_value'] = v.view(bsz, self.num_heads, -1,
self.head_dim)
self._set_input_buffer(incremental_state, saved_state)
src_len = k.size(1)
# This is part of a workaround to get around fork/join parallelism
# not supporting Optional types.
if key_padding_mask is not None and key_padding_mask.shape == torch.Size(
[]):
key_padding_mask = None
if key_padding_mask is not None:
assert key_padding_mask.size(0) == bsz
assert key_padding_mask.size(1) == src_len
attn_weights = torch.bmm(q, k.transpose(1, 2))
assert list(
attn_weights.size()) == [bsz * self.num_heads, tgt_len, src_len]
if attn_mask is not None:
attn_mask = attn_mask.unsqueeze(0)
if self.onnx_trace:
attn_mask = attn_mask.repeat(attn_weights.size(0), 1, 1)
attn_weights += attn_mask
if key_padding_mask is not None:
# don't attend to padding symbols
attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len,
src_len)
if self.onnx_trace:
attn_weights = torch.where(
key_padding_mask.unsqueeze(1).unsqueeze(2),
torch.Tensor([float("-Inf")]),
attn_weights.float()).type_as(attn_weights)
else:
attn_weights = attn_weights.float().masked_fill(
key_padding_mask.unsqueeze(1).unsqueeze(2),
float('-inf'),
).type_as(attn_weights) # FP16 support: cast to float and back
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len,
src_len)
attn_weights = utils.softmax(
attn_weights,
dim=-1,
onnx_trace=self.onnx_trace,
).type_as(attn_weights)
attn_weights = F.dropout(attn_weights,
p=self.dropout,
training=self.training)
attn = torch.bmm(attn_weights, v)
assert list(
attn.size()) == [bsz * self.num_heads, tgt_len, self.head_dim]
if (self.onnx_trace and attn.size(1) == 1):
# when ONNX tracing a single decoder step (sequence length == 1)
# the transpose is a no-op copy before view, thus unnecessary
attn = attn.contiguous().view(tgt_len, bsz, embed_dim)
else:
attn = attn.transpose(0,
1).contiguous().view(tgt_len, bsz, embed_dim)
if need_weights:
# average attention weights over heads
attn_weights = attn_weights.view(bsz, self.num_heads, tgt_len,
src_len)
attn_weights = attn_weights.sum(dim=1) / self.num_heads
else:
attn_weights = None
return attn, attn_weights
def test_narrow(self):
x = torch.randn(3, 3, requires_grad=True)
self.assertONNX(lambda x: torch.narrow(x, 0, 0, 2), x)
def _handle_row_wise_sharding(input, world_size, weight, rank, local_shard_t, bias, pg):
"""
Entry-point function to handle the logic of row-wise sharding of weight
for Linear. (Detailed explanations of the logic can be found in the
comment for sharded_linear.)
Args:
input: matrix to be multiplied with the sharded weight.
world_size: number of ranks.
weight: shareded weight tensor.
rank: # of cuda process.
local_shard_t: row-wise shared local weight used for lookup.
bias: bias term of linear op.
pg: process group.
Returns: final result of linear operation.
"""
# alltoall to gather all the appropriate inputs.
input_t = input.t().contiguous()
input_t_size = input_t.size()
# Compute expected size
split_size = get_split_size(input_t_size[0], world_size)
input_split_sizes = [0] * world_size
rearrange_rows = False
for idx, placement in enumerate(weight._sharding_spec.placements):
sharded_dim_size = get_chunked_dim_size(input_t_size[0], split_size, idx)
input_split_sizes[placement.rank()] = sharded_dim_size
if placement.rank() != idx:
rearrange_rows = True
if rearrange_rows:
# Need to re-arrange rows of input_t for all2all.
indices: List[List[int]] = [[0]] * world_size
# When we do the chunk split, we always ensure the first N - 1 chunks get max out
# and then the Nth chunk gets the rest. So input_split_sizes like [3, 3, 3, 4]
# are not possible. The expected split size will be [4, 4, 4, 1].
sharded_dim_size_max = max(input_split_sizes)
for idx, placement in enumerate(weight._sharding_spec.placements):
split_size = input_split_sizes[placement.rank()]
offset_start_idx = idx * sharded_dim_size_max
indices[placement.rank()] = list(range(offset_start_idx, offset_start_idx + split_size))
indices_flatten = list(idx for indice in indices for idx in indice)
input_t = input_t.index_select(0, torch.tensor(indices_flatten, device=input_t.device))
gathered_input = torch.empty(input_split_sizes[rank] * world_size, input_t_size[1], device=input_t.device)
# Perform alltoall
dist.all_to_all_single(gathered_input, input_t, input_split_sizes=input_split_sizes, group=pg)
gathered_input = gathered_input.t()
# Perform local matmuls for all shards
shard_size = local_shard_t.size()[0]
results = []
for r in range(world_size):
inp = torch.narrow(gathered_input, 1, r * shard_size, shard_size)
results.append(inp.matmul(local_shard_t))
# Gather all the results appropriately.
local_result = torch.empty_like(results[rank])
dist.reduce_scatter(local_result, results, group=pg)
# Return the appropriate local result.
return local_result + bias
def slice_axis(data, axis, begin, end):
return th.narrow(data, axis, begin, end - begin)
def backward(ctx, grad_output):
slice_size = grad_output.size(ctx.dim) // ctx.world_size
return torch.narrow(grad_output.clone(), ctx.dim,
ctx.ordinal * slice_size, slice_size), None
def forward(self, adv_patch, lab_batch, img_size, do_rotate=True, rand_loc=True):
#adv_patch = F.conv2d(adv_patch.unsqueeze(0),self.kernel,padding=(2,2))
adv_patch = self.medianpooler(adv_patch.unsqueeze(0))
#print('lab_batch---------------------------: ',lab_batch)
# Determine size of padding
pad = (img_size - adv_patch.size(-1)) / 2
# Make a batch of patches
adv_patch = adv_patch.unsqueeze(0)#.unsqueeze(0)
adv_batch = adv_patch.expand(lab_batch.size(0), lab_batch.size(1), -1, -1, -1)
batch_size = torch.Size((lab_batch.size(0), lab_batch.size(1)))
#print('--========+++++======---adv_patch/adv_batch-----',adv_patch.shape,adv_batch.shape)
#torch.Size([1, 1, 3, 300, 300]) torch.Size([8, 14, 3, 300, 300])
# Contrast, brightness and noise transforms
# Create random contrast tensor
contrast = torch.cuda.FloatTensor(batch_size).uniform_(self.min_contrast, self.max_contrast)
contrast = contrast.unsqueeze(-1).unsqueeze(-1).unsqueeze(-1)
contrast = contrast.expand(-1, -1, adv_batch.size(-3), adv_batch.size(-2), adv_batch.size(-1))
contrast = contrast.cuda()
# Create random brightness tensor
brightness = torch.cuda.FloatTensor(batch_size).uniform_(self.min_brightness, self.max_brightness)
brightness = brightness.unsqueeze(-1).unsqueeze(-1).unsqueeze(-1)
brightness = brightness.expand(-1, -1, adv_batch.size(-3), adv_batch.size(-2), adv_batch.size(-1))
brightness = brightness.cuda()
# Create random noise tensor
noise = torch.cuda.FloatTensor(adv_batch.size()).uniform_(-1, 1) * self.noise_factor
# Apply contrast/brightness/noise, clamp
adv_batch = adv_batch * contrast + brightness + noise
adv_batch = torch.clamp(adv_batch, 0.000001, 0.99999)
#人为指定maxlab数量最大为14，不够的其值全部填充1，所以这里以示区别
# Where the label class_id is 1 we don't want a patch (padding) --> fill mask with zero's
#class_id = 1 人为填充的1
#lab_batch.size=torch.Size([8, 14, 5]),batch=8,maxlab=14,5表示标签+坐标
cls_ids = torch.narrow(lab_batch, 2, 0, 1) #取lab_batch得第二个维度即5上的0-1得索引值即第一个id值
cls_mask = cls_ids.expand(-1, -1, 3)
cls_mask = cls_mask.unsqueeze(-1)
cls_mask = cls_mask.expand(-1, -1, -1, adv_batch.size(3))
cls_mask = cls_mask.unsqueeze(-1)
cls_mask = cls_mask.expand(-1, -1, -1, -1, adv_batch.size(4))
msk_batch = torch.cuda.FloatTensor(cls_mask.size()).fill_(1) - cls_mask
#print('++++++++++====msk_batch=========',msk_batch.shape,msk_batch)#torch.Size([8, 14, 3, 300, 300])
# Pad patch and mask to image dimensions
mypad = nn.ConstantPad2d((int(pad + 0.5), int(pad), int(pad + 0.5), int(pad)), 0)
#左右上下四个维度分别按指定int大小填充相应个数0，使图像块填充后大小和原图像大小相同
#填充的值为0，在两者融合时过滤掉0值
#分别对应同等大小的图像块和label_id(扩维后得)，将两者相乘表示以id过滤图像块
adv_batch = mypad(adv_batch)
msk_batch = mypad(msk_batch)
# Rotation and rescaling transforms，根据真实label的大小、方向进行图像块的填充
anglesize = (lab_batch.size(0) * lab_batch.size(1))
if do_rotate:
angle = torch.cuda.FloatTensor(anglesize).uniform_(self.minangle, self.maxangle)
else:
angle = torch.cuda.FloatTensor(anglesize).fill_(0)
# Resizes and rotates
current_patch_size = adv_patch.size(-1)
lab_batch_scaled = torch.cuda.FloatTensor(lab_batch.size()).fill_(0)
#根据label坐标获取真实标注框大小:x\y\w\h
lab_batch_scaled[:, :, 1] = lab_batch[:, :, 1] * img_size
lab_batch_scaled[:, :, 2] = lab_batch[:, :, 2] * img_size
lab_batch_scaled[:, :, 3] = lab_batch[:, :, 3] * img_size
lab_batch_scaled[:, :, 4] = lab_batch[:, :, 4] * img_size
#图像块大小
target_size = torch.sqrt(((lab_batch_scaled[:, :, 3].mul(0.2)) ** 2) + ((lab_batch_scaled[:, :, 4].mul(0.2)) ** 2))
target_x = lab_batch[:, :, 1].view(np.prod(batch_size))
target_y = lab_batch[:, :, 2].view(np.prod(batch_size))
targetoff_x = lab_batch[:, :, 3].view(np.prod(batch_size))
targetoff_y = lab_batch[:, :, 4].view(np.prod(batch_size))
if(rand_loc):
off_x = targetoff_x*(torch.cuda.FloatTensor(targetoff_x.size()).uniform_(-0.4,0.4))
target_x = target_x + off_x
off_y = targetoff_y*(torch.cuda.FloatTensor(targetoff_y.size()).uniform_(-0.4,0.4))
target_y = target_y + off_y
target_y = target_y - 0.05
scale = target_size / current_patch_size
scale = scale.view(anglesize)
s = adv_batch.size()
adv_batch = adv_batch.view(s[0] * s[1], s[2], s[3], s[4])
msk_batch = msk_batch.view(s[0] * s[1], s[2], s[3], s[4])
tx = (-target_x+0.5)*2
ty = (-target_y+0.5)*2
sin = torch.sin(angle)
cos = torch.cos(angle)
# Theta = rotation,rescale matrix
theta = torch.cuda.FloatTensor(anglesize, 2, 3).fill_(0)
theta[:, 0, 0] = cos/scale
theta[:, 0, 1] = sin/scale
theta[:, 0, 2] = tx*cos/scale+ty*sin/scale
theta[:, 1, 0] = -sin/scale
theta[:, 1, 1] = cos/scale
theta[:, 1, 2] = -tx*sin/scale+ty*cos/scale
b_sh = adv_batch.shape
#仿射变换：进行相应旋转平移缩放等，最终输出大小为图片大小416
grid = F.affine_grid(theta, adv_batch.shape)
adv_batch_t = F.grid_sample(adv_batch, grid)
msk_batch_t = F.grid_sample(msk_batch, grid)
#print('-_______________adv_batch_t/mas________-----',adv_batch_t.shape,msk_batch_t.shape)
#torch.Size([112, 3, 416, 416]) torch.Size([112, 3, 416, 416])
'''
# Theta2 = translation matrix
theta2 = torch.cuda.FloatTensor(anglesize, 2, 3).fill_(0)
theta2[:, 0, 0] = 1
theta2[:, 0, 1] = 0
theta2[:, 0, 2] = (-target_x + 0.5) * 2
theta2[:, 1, 0] = 0
theta2[:, 1, 1] = 1
theta2[:, 1, 2] = (-target_y + 0.5) * 2
grid2 = F.affine_grid(theta2, adv_batch.shape)
adv_batch_t = F.grid_sample(adv_batch_t, grid2)
msk_batch_t = F.grid_sample(msk_batch_t, grid2)
'''
adv_batch_t = adv_batch_t.view(s[0], s[1], s[2], s[3], s[4])
msk_batch_t = msk_batch_t.view(s[0], s[1], s[2], s[3], s[4])
adv_batch_t = torch.clamp(adv_batch_t, 0.000001, 0.999999)
#img = msk_batch_t[0, 0, :, :, :].detach().cpu()
#img = transforms.ToPILImage()(img)
#img.show()
#exit()
return adv_batch_t * msk_batch_t
def d_slice(dist, i, j, length):
return torch.narrow(torch.narrow(dist, 0, i, length), 1, j, length)
def _forward_biobert(
self, tokens: List[List[str]]
) -> Tuple[torch.Tensor, torch.Tensor]:
"""
Return BioBERT Hidden state for the tokenized documents.
Documents with different lengths will be accepted.
list(list(str)) -> tuple(torch.tensor, torch.tensor)
"""
# Convert each token of each document into a list of subwords.
# e.g.,
# [['Admission', 'Date', ...], ['Service', ':', ...]]
# |
# V
# [[['Ad', '##mission'], ['Date'], ...], [['Service'], [':'], ...]]
subwords_unchained = [
[self.tokenizer.tokenize(tok) for tok in doc] for doc in tokens
]
# Simply replace each token of each document with corresponding subwords.
# e.g.,
# [['Admission', 'Date', ...], ['Service', ':', ...]]
# |
# V
# [['Ad', '##mission', 'Date', ...], ['Service', ':', ...]]
subwords = [
list(itertools.chain(*[self.tokenizer.tokenize(tok) for tok in doc]))
for doc in tokens
]
# Memorize (i) header place of each token and (ii) how many subwords each token gave birth.
# e.g.,
# For document ['Admission', 'Date'] -> ['Ad', '##mission', 'Date'],
# subword_info will be {'start':[0,2], 'length':[2,1]}.
subword_info = []
for doc in subwords_unchained:
word_lengths = [len(word) for word in doc]
word_head_ix = [0]
for i in range(len(word_lengths) - 1):
word_head_ix.append(word_head_ix[-1] + word_lengths[i])
assert len(word_lengths) == len(word_head_ix)
subword_info.append({"start": word_head_ix, "length": word_lengths})
assert [len(info["start"]) for info in subword_info] == [
len(doc) for doc in tokens
]
# Split each document into chunks shorter than max_length.
# Here, each document will be simply split at every 510 tokens.
max_length = min(
self.bertconfig.max_position_embeddings, self.hparams.max_length
)
longest_length = max([len(doc) for doc in subwords])
n_chunks = (longest_length - 1) // (max_length - 2) + 1
chunks = []
for n in range(n_chunks):
chunk_of_all_documents = []
for document in subwords:
chunk_of_single_document = document[
(max_length - 2) * n : (max_length - 2) * (n + 1)
]
if chunk_of_single_document == []:
chunk_of_all_documents.append([""])
else:
chunk_of_all_documents.append(chunk_of_single_document)
chunks.append(chunk_of_all_documents)
# Convert chunks into BERT input form.
inputs = []
for chunk in chunks:
if type(chunk) is str:
unsqueezed_chunk = [[chunk]]
elif type(chunk) is list:
if type(chunk[0]) is str:
unsqueezed_chunk = [chunk]
elif type(chunk[0]) is list:
unsqueezed_chunk = chunk
inputs.append(
self.tokenizer.batch_encode_plus(
unsqueezed_chunk,
pad_to_max_length=True,
is_pretokenized=True,
)
)
# Get BioBERT hidden states.
hidden_states = []
for inpt in inputs:
inpt_tensors = {
k: torch.tensor(v).to(self.get_device()) for k, v in inpt.items()
}
hidden_state = self.biobert(**inpt_tensors)[0][:, 1:-1, :]
hidden_states.append(hidden_state)
# Concatenate hidden states from each chunk.
hidden_states_cat = torch.cat(hidden_states, dim=1)
# If a word was tokenized into multiple subwords, take average of them.
# e.g. Hidden state for "Admission" equals average of hidden states for "Ad" and "##mission"
hidden_states_shrunk = torch.zeros_like(hidden_states_cat)
for n in range(hidden_states_cat.size()[0]):
hidden_state_shrunk = torch.stack(
[
torch.narrow(hidden_states_cat[n], dim=0, start=s, length=l).mean(
dim=0
)
for s, l in zip(subword_info[n]["start"], subword_info[n]["length"])
]
)
hidden_states_shrunk[
n, : hidden_state_shrunk.size()[0], :
] = hidden_state_shrunk
# Truncate lengthy tail that will not be used.
hidden_states_shrunk = hidden_states_shrunk[
:, : max([len(doc) for doc in tokens]), :
]
# Create mask for CRF.
crf_mask = torch.zeros(hidden_states_shrunk.size()[:2]).to(torch.uint8)
for i, length in enumerate([len(doc) for doc in tokens]):
crf_mask[i, :length] = 1
crf_mask = crf_mask > 0
crf_mask = crf_mask.to(self.get_device())
return (hidden_states_shrunk, crf_mask)
def extract_feature_matrix(self):
# define generator
generator = self.generator(self.paths)
# load extractor
extractor = self.load_vgg19(self.layer)
# initialize sketch and label matrices
features = []
paths = []
n = 0
quit = False
# generate batches of sketches and labels
if generator:
while True:
batch_size = self.batch_size
img_batch = torch.zeros(batch_size, 3, self.imsize,
self.imsize)
paths_batch = []
if self.use_cuda:
img_batch = img_batch.to(self.cuda_device)
if (n + 1) % 5 == 0:
print('Batch {}'.format(n + 1))
for b in range(batch_size):
try:
img, path = next(generator)
img_batch[b] = img
paths_batch.append(path)
except StopIteration:
quit = True
print('stopped!')
break
if n == self.num_images // self.batch_size:
print('b', b)
print(img_batch.size())
img_batch = torch.narrow(img_batch, 0, 0, b)
print(img_batch.size())
paths_batch = paths_batch[:b + 1]
# extract features from batch
n += 1
feats_batch = extractor(img_batch)
feats_batch = [feat.cpu().data.numpy() for feat in feats_batch]
feats_batch = np.squeeze(np.array(feats_batch), axis=0)
# feats_batch = feats_batch.cpu().data.numpy()
# print('features shape', features.shape)
if len(features) == 0:
features = feats_batch
else:
features = np.vstack((features, feats_batch))
paths.append(paths_batch)
if n == self.num_images // batch_size + 1:
break
return features, paths
