def test_default_colate_bad_numpy_types(self):
import numpy as np
# Should be a no-op
arr = np.array(['a', 'b', 'c'])
default_collate(arr)
arr = np.array([[['a', 'b', 'c']]])
self.assertRaises(TypeError, lambda: default_collate(arr))
arr = np.array([object(), object(), object()])
self.assertRaises(TypeError, lambda: default_collate(arr))
arr = np.array([[[object(), object(), object()]]])
self.assertRaises(TypeError, lambda: default_collate(arr))
def eqaCollateSeq2seq(batch):
transposed = list(zip(*batch))
idx_batch = default_collate(transposed[0])
questions_batch = default_collate(transposed[1])
answers_batch = default_collate(transposed[2])
images_batch = default_collate(transposed[3])
actions_in_batch = default_collate(transposed[4])
actions_out_batch = default_collate(transposed[5])
action_lengths_batch = default_collate(transposed[6])
mask_batch = default_collate(transposed[7])
return [
idx_batch, questions_batch, answers_batch, images_batch,
actions_in_batch, actions_out_batch, action_lengths_batch, mask_batch
]
def my_collate_fn(batch):
batch = list(filter(lambda x: x is not None, batch))
if len(batch) == 0:
print("No valid data!!!")
batch = [[torch.from_numpy(np.zeros([1, 1]))]]
return default_collate(batch)
def collate_fn(batch):
# remove audio from the batch
batch = [(d[0], d[2]) for d in batch]
return default_collate(batch)
def my_collate(batch):
batch = list(filter(lambda x: x is not None, batch))
if len(batch) == 0:
return None
else:
return default_collate(batch)
def my_collate(batch):
batch = list(filter(lambda x: x is not None, batch))
return dataloader.default_collate(batch)
def my_collate_split(batch):
batch = list(filter(lambda x: x is not None, batch))
if len(batch) < 1:
return None, None, None, None, None, None
return default_collate(batch)
def __call__(self, batch: Dict[str,
torch.Tensor]) -> Dict[str, torch.Tensor]:
batch = default_collate(batch)
batch = cutmix(batch, self.alpha)
return batch
def collate_fn(batch):
batch = [s for s in batch if s is not None]
return default_collate(batch)
def center_collate(batch):
"Puts each data field into a tensor with outer dimension batch size"
batchindexgetter = itemgetter(2)
batch = list(filter(lambda x: batchindexgetter(x) % 4 == 0, batch))
return default_collate(batch)
def dense_collate(data_list):
batch = Batch()
for key in data_list[0].keys:
batch[key] = default_collate([d[key] for d in data_list])
return batch
def main(args):
if args.output_dir:
utils.mkdir(args.output_dir)
utils.init_distributed_mode(args)
print(args)
device = torch.device(args.device)
if args.use_deterministic_algorithms:
torch.backends.cudnn.benchmark = False
torch.use_deterministic_algorithms(True)
else:
torch.backends.cudnn.benchmark = True
train_dir = os.path.join(args.data_path, "train")
val_dir = os.path.join(args.data_path, "val")
dataset, dataset_test, train_sampler, test_sampler = load_data(
train_dir, val_dir, args)
collate_fn = None
num_classes = len(dataset.classes)
mixup_transforms = []
if args.mixup_alpha > 0.0:
mixup_transforms.append(
transforms.RandomMixup(num_classes, p=1.0, alpha=args.mixup_alpha))
if args.cutmix_alpha > 0.0:
mixup_transforms.append(
transforms.RandomCutmix(num_classes,
p=1.0,
alpha=args.cutmix_alpha))
if mixup_transforms:
mixupcutmix = torchvision.transforms.RandomChoice(mixup_transforms)
collate_fn = lambda batch: mixupcutmix(*default_collate(batch)
) # noqa: E731
data_loader = torch.utils.data.DataLoader(
dataset,
batch_size=args.batch_size,
sampler=train_sampler,
num_workers=args.workers,
pin_memory=True,
collate_fn=collate_fn,
)
data_loader_test = torch.utils.data.DataLoader(dataset_test,
batch_size=args.batch_size,
sampler=test_sampler,
num_workers=args.workers,
pin_memory=True)
print("Creating model")
model = torchvision.models.__dict__[args.model](weights=args.weights,
num_classes=num_classes)
model.to(device)
if args.distributed and args.sync_bn:
model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model)
criterion = nn.CrossEntropyLoss(label_smoothing=args.label_smoothing)
if args.norm_weight_decay is None:
parameters = model.parameters()
else:
param_groups = torchvision.ops._utils.split_normalization_params(model)
wd_groups = [args.norm_weight_decay, args.weight_decay]
parameters = [{
"params": p,
"weight_decay": w
} for p, w in zip(param_groups, wd_groups) if p]
opt_name = args.opt.lower()
if opt_name.startswith("sgd"):
optimizer = torch.optim.SGD(
parameters,
lr=args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay,
nesterov="nesterov" in opt_name,
)
elif opt_name == "rmsprop":
optimizer = torch.optim.RMSprop(parameters,
lr=args.lr,
momentum=args.momentum,
weight_decay=args.weight_decay,
eps=0.0316,
alpha=0.9)
elif opt_name == "adamw":
optimizer = torch.optim.AdamW(parameters,
lr=args.lr,
weight_decay=args.weight_decay)
else:
raise RuntimeError(
f"Invalid optimizer {args.opt}. Only SGD, RMSprop and AdamW are supported."
)
scaler = torch.cuda.amp.GradScaler() if args.amp else None
args.lr_scheduler = args.lr_scheduler.lower()
if args.lr_scheduler == "steplr":
main_lr_scheduler = torch.optim.lr_scheduler.StepLR(
optimizer, step_size=args.lr_step_size, gamma=args.lr_gamma)
elif args.lr_scheduler == "cosineannealinglr":
main_lr_scheduler = torch.optim.lr_scheduler.CosineAnnealingLR(
optimizer, T_max=args.epochs - args.lr_warmup_epochs)
elif args.lr_scheduler == "exponentiallr":
main_lr_scheduler = torch.optim.lr_scheduler.ExponentialLR(
optimizer, gamma=args.lr_gamma)
else:
raise RuntimeError(
f"Invalid lr scheduler '{args.lr_scheduler}'. Only StepLR, CosineAnnealingLR and ExponentialLR "
"are supported.")
if args.lr_warmup_epochs > 0:
if args.lr_warmup_method == "linear":
warmup_lr_scheduler = torch.optim.lr_scheduler.LinearLR(
optimizer,
start_factor=args.lr_warmup_decay,
total_iters=args.lr_warmup_epochs)
elif args.lr_warmup_method == "constant":
warmup_lr_scheduler = torch.optim.lr_scheduler.ConstantLR(
optimizer,
factor=args.lr_warmup_decay,
total_iters=args.lr_warmup_epochs)
else:
raise RuntimeError(
f"Invalid warmup lr method '{args.lr_warmup_method}'. Only linear and constant are supported."
)
lr_scheduler = torch.optim.lr_scheduler.SequentialLR(
optimizer,
schedulers=[warmup_lr_scheduler, main_lr_scheduler],
milestones=[args.lr_warmup_epochs])
else:
lr_scheduler = main_lr_scheduler
model_without_ddp = model
if args.distributed:
model = torch.nn.parallel.DistributedDataParallel(
model, device_ids=[args.gpu])
model_without_ddp = model.module
model_ema = None
if args.model_ema:
# Decay adjustment that aims to keep the decay independent from other hyper-parameters originally proposed at:
# https://github.com/facebookresearch/pycls/blob/f8cd9627/pycls/core/net.py#L123
#
# total_ema_updates = (Dataset_size / n_GPUs) * epochs / (batch_size_per_gpu * EMA_steps)
# We consider constant = Dataset_size for a given dataset/setup and ommit it. Thus:
# adjust = 1 / total_ema_updates ~= n_GPUs * batch_size_per_gpu * EMA_steps / epochs
adjust = args.world_size * args.batch_size * args.model_ema_steps / args.epochs
alpha = 1.0 - args.model_ema_decay
alpha = min(1.0, alpha * adjust)
model_ema = utils.ExponentialMovingAverage(model_without_ddp,
device=device,
decay=1.0 - alpha)
if args.resume:
checkpoint = torch.load(args.resume, map_location="cpu")
model_without_ddp.load_state_dict(checkpoint["model"])
if not args.test_only:
optimizer.load_state_dict(checkpoint["optimizer"])
lr_scheduler.load_state_dict(checkpoint["lr_scheduler"])
args.start_epoch = checkpoint["epoch"] + 1
if model_ema:
model_ema.load_state_dict(checkpoint["model_ema"])
if scaler:
scaler.load_state_dict(checkpoint["scaler"])
if args.test_only:
# We disable the cudnn benchmarking because it can noticeably affect the accuracy
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True
if model_ema:
evaluate(model_ema,
criterion,
data_loader_test,
device=device,
log_suffix="EMA")
else:
evaluate(model, criterion, data_loader_test, device=device)
return
print("Start training")
start_time = time.time()
for epoch in range(args.start_epoch, args.epochs):
if args.distributed:
train_sampler.set_epoch(epoch)
train_one_epoch(model, criterion, optimizer, data_loader, device,
epoch, args, model_ema, scaler)
lr_scheduler.step()
evaluate(model, criterion, data_loader_test, device=device)
if model_ema:
evaluate(model_ema,
criterion,
data_loader_test,
device=device,
log_suffix="EMA")
if args.output_dir:
checkpoint = {
"model": model_without_ddp.state_dict(),
"optimizer": optimizer.state_dict(),
"lr_scheduler": lr_scheduler.state_dict(),
"epoch": epoch,
"args": args,
}
if model_ema:
checkpoint["model_ema"] = model_ema.state_dict()
if scaler:
checkpoint["scaler"] = scaler.state_dict()
utils.save_on_master(
checkpoint, os.path.join(args.output_dir,
f"model_{epoch}.pth"))
utils.save_on_master(
checkpoint, os.path.join(args.output_dir, "checkpoint.pth"))
total_time = time.time() - start_time
total_time_str = str(datetime.timedelta(seconds=int(total_time)))
print(f"Training time {total_time_str}")
def my_collate(batch):
batch = [b for b in batch if b is not None]
return default_collate(batch)
def custom_collate_fn(batch):
items = list(zip(*batch))
items[0] = default_collate(items[0])
items[1] = default_collate(items[1])
items[2] = default_collate(items[2])
return items
def __getitem__(self,
cuts: CutSet) -> Dict[str, Union[torch.Tensor, List[str]]]:
"""
Return a new batch, with the batch size automatically determined using the constraints
of max_frames and max_cuts.
"""
validate_for_asr(cuts)
# Sort the cuts by duration so that the first one determines the batch time dimensions.
cuts = cuts.sort_by_duration(ascending=False)
# Optional CutSet transforms - e.g. padding, or speed perturbation that adjusts
# the supervision boundaries.
for tnfm in self.cut_transforms:
cuts = tnfm(cuts)
# Get a tensor with batched feature matrices, shape (B, T, F)
# Collation performs auto-padding, if necessary.
inputs, _ = self.input_strategy(cuts)
# Get a dict of tensors that encode the positional information about supervisions
# in the batch of feature matrices. The tensors are named "sequence_idx",
# "start_frame/sample" and "num_frames/samples".
supervision_intervals = self.input_strategy.supervision_intervals(cuts)
# Apply all available transforms on the inputs, i.e. either audio or features.
# This could be feature extraction, global MVN, SpecAugment, etc.
segments = torch.stack(list(supervision_intervals.values()), dim=1)
for tnfm in self.input_transforms:
inputs = tnfm(inputs, supervision_segments=segments)
batch = {
"inputs":
inputs,
"supervisions":
default_collate([{
"text": supervision.text,
} for sequence_idx, cut in enumerate(cuts)
for supervision in cut.supervisions]),
}
# Update the 'supervisions' field with sequence_idx and start/num frames/samples
batch["supervisions"].update(supervision_intervals)
if self.return_cuts:
batch["supervisions"]["cut"] = [
cut for cut in cuts for sup in cut.supervisions
]
has_word_alignments = all(
s.alignment is not None and "word" in s.alignment for c in cuts
for s in c.supervisions)
if has_word_alignments:
# TODO: might need to refactor BatchIO API to move the following conditional logic
# into these objects (e.g. use like: self.input_strategy.convert_timestamp(),
# that returns either num_frames or num_samples depending on the strategy).
words, starts, ends = [], [], []
frame_shift = cuts[0].frame_shift
sampling_rate = cuts[0].sampling_rate
if frame_shift is None:
try:
frame_shift = self.input_strategy.extractor.frame_shift
except AttributeError:
raise ValueError(
"Can't determine the frame_shift -- it is not present either in cuts or the input_strategy. "
)
for c in cuts:
for s in c.supervisions:
words.append(
[aliword.symbol for aliword in s.alignment["word"]])
starts.append([
compute_num_frames(
aliword.start,
frame_shift=frame_shift,
sampling_rate=sampling_rate,
) for aliword in s.alignment["word"]
])
ends.append([
compute_num_frames(
aliword.end,
frame_shift=frame_shift,
sampling_rate=sampling_rate,
) for aliword in s.alignment["word"]
])
batch["supervisions"]["word"] = words
batch["supervisions"]["word_start"] = starts
batch["supervisions"]["word_end"] = ends
return batch
def collate_fn(batch):
batch = list(filter(lambda x: x is not None, batch))
return default_collate(batch)
def custom_collate(self, batch):
return default_collate(batch)
def run_conditional(model, dsets):
if len(dsets.datasets) > 1:
split = st.sidebar.radio("Split", sorted(dsets.datasets.keys()))
dset = dsets.datasets[split]
else:
dset = next(iter(dsets.datasets.values()))
batch_size = 1
start_index = st.sidebar.number_input("Example Index (Size: {})".format(len(dset)), value=0,
min_value=0,
max_value=len(dset)-batch_size)
indices = list(range(start_index, start_index+batch_size))
example = default_collate([dset[i] for i in indices])
x = model.get_input("image", example).to(model.device)
cond_key = model.cond_stage_key
c = model.get_input(cond_key, example).to(model.device)
scale_factor = st.sidebar.slider("Scale Factor", min_value=0.5, max_value=4.0, step=0.25, value=1.00)
if scale_factor != 1.0:
x = torch.nn.functional.interpolate(x, scale_factor=scale_factor, mode="bicubic")
c = torch.nn.functional.interpolate(c, scale_factor=scale_factor, mode="bicubic")
quant_z, z_indices = model.encode_to_z(x)
quant_c, c_indices = model.encode_to_c(c)
cshape = quant_z.shape
xrec = model.first_stage_model.decode(quant_z)
st.write("image: {}".format(x.shape))
st.image(bchw_to_st(x), clamp=True, output_format="PNG")
st.write("image reconstruction: {}".format(xrec.shape))
st.image(bchw_to_st(xrec), clamp=True, output_format="PNG")
if cond_key == "segmentation":
# get image from segmentation mask
num_classes = c.shape[1]
c = torch.argmax(c, dim=1, keepdim=True)
c = torch.nn.functional.one_hot(c, num_classes=num_classes)
c = c.squeeze(1).permute(0, 3, 1, 2).float()
c = model.cond_stage_model.to_rgb(c)
st.write(f"{cond_key}: {tuple(c.shape)}")
st.image(bchw_to_st(c), clamp=True, output_format="PNG")
idx = z_indices
half_sample = st.sidebar.checkbox("Image Completion", value=False)
if half_sample:
start = idx.shape[1]//2
else:
start = 0
idx[:,start:] = 0
idx = idx.reshape(cshape[0],cshape[2],cshape[3])
start_i = start//cshape[3]
start_j = start %cshape[3]
if not half_sample and quant_z.shape == quant_c.shape:
st.info("Setting idx to c_indices")
idx = c_indices.clone().reshape(cshape[0],cshape[2],cshape[3])
cidx = c_indices
cidx = cidx.reshape(quant_c.shape[0],quant_c.shape[2],quant_c.shape[3])
xstart = model.decode_to_img(idx[:,:cshape[2],:cshape[3]], cshape)
st.image(bchw_to_st(xstart), clamp=True, output_format="PNG")
temperature = st.number_input("Temperature", value=1.0)
top_k = st.number_input("Top k", value=100)
sample = st.checkbox("Sample", value=True)
update_every = st.number_input("Update every", value=75)
st.text(f"Sampling shape ({cshape[2]},{cshape[3]})")
animate = st.checkbox("animate")
if animate:
import imageio
outvid = "sampling.mp4"
writer = imageio.get_writer(outvid, fps=25)
elapsed_t = st.empty()
info = st.empty()
st.text("Sampled")
if st.button("Sample"):
output = st.empty()
start_t = time.time()
for i in range(start_i,cshape[2]-0):
if i <= 8:
local_i = i
elif cshape[2]-i < 8:
local_i = 16-(cshape[2]-i)
else:
local_i = 8
for j in range(start_j,cshape[3]-0):
if j <= 8:
local_j = j
elif cshape[3]-j < 8:
local_j = 16-(cshape[3]-j)
else:
local_j = 8
i_start = i-local_i
i_end = i_start+16
j_start = j-local_j
j_end = j_start+16
elapsed_t.text(f"Time: {time.time() - start_t} seconds")
info.text(f"Step: ({i},{j}) | Local: ({local_i},{local_j}) | Crop: ({i_start}:{i_end},{j_start}:{j_end})")
patch = idx[:,i_start:i_end,j_start:j_end]
patch = patch.reshape(patch.shape[0],-1)
cpatch = cidx[:, i_start:i_end, j_start:j_end]
cpatch = cpatch.reshape(cpatch.shape[0], -1)
patch = torch.cat((cpatch, patch), dim=1)
logits,_ = model.transformer(patch[:,:-1])
logits = logits[:, -256:, :]
logits = logits.reshape(cshape[0],16,16,-1)
logits = logits[:,local_i,local_j,:]
logits = logits/temperature
if top_k is not None:
logits = model.top_k_logits(logits, top_k)
# apply softmax to convert to probabilities
probs = torch.nn.functional.softmax(logits, dim=-1)
# sample from the distribution or take the most likely
if sample:
ix = torch.multinomial(probs, num_samples=1)
else:
_, ix = torch.topk(probs, k=1, dim=-1)
idx[:,i,j] = ix
if (i*cshape[3]+j)%update_every==0:
xstart = model.decode_to_img(idx[:, :cshape[2], :cshape[3]], cshape,)
xstart = bchw_to_st(xstart)
output.image(xstart, clamp=True, output_format="PNG")
if animate:
writer.append_data((xstart[0]*255).clip(0, 255).astype(np.uint8))
xstart = model.decode_to_img(idx[:,:cshape[2],:cshape[3]], cshape)
xstart = bchw_to_st(xstart)
output.image(xstart, clamp=True, output_format="PNG")
#save_img(xstart, "full_res_sample.png")
if animate:
writer.close()
st.video(outvid)
def collate_data(batch):
if isinstance(batch[0], str):
return batch
else:
return default_collate(batch)
def my_collate(batch):
batch = [dict for dict in batch if dict['4_lanes'] is True]
return default_collate(batch)
def collate_fn(batch):
return (default_collate([b[0] for b in batch]),
[b[1] for b in batch])
def my_collate(batch):
batch = [i for i in filter(lambda x:x is not None, batch)]
return default_collate(batch)
def collater(self, samples):
# For now only supports datasets with same underlying collater implementations
if hasattr(self.datasets[0], 'collater'):
return self.datasets[0].collater(samples)
else:
return default_collate(samples)
def safe_collate(batch):
"""Return batch without any None values"""
batch = list(filter(lambda x: x is not None, batch))
return default_collate(batch)
def collate_fn(self, x: List[Tuple]):
# if self.config.experiment.batch_size > 1:
s2s_data, cmax_data = [item[0] for item in x], [item[1] for item in x]
tensors, dates = [item[:-2] for item in s2s_data], [item[-2:] for item in s2s_data]
return [[*default_collate(tensors), *list(zip(*dates))], default_collate(cmax_data)]
def collate(batch, samples_per_gpu=1):
"""Puts each data field into a tensor/DataContainer with outer dimension
batch size.
Extend default_collate to add support for
:type:`~torchie.parallel.DataContainer`. There are 3 cases.
1. cpu_only = True, e.g., meta data
2. cpu_only = False, stack = True, e.g., images tensors
3. cpu_only = False, stack = False, e.g., gt bboxes
"""
if not isinstance(batch, collections.Sequence):
raise TypeError("{} is not supported.".format(batch.dtype))
if isinstance(batch[0], DataContainer):
assert len(batch) % samples_per_gpu == 0
stacked = []
if batch[0].cpu_only:
for i in range(0, len(batch), samples_per_gpu):
stacked.append(
[sample.data for sample in batch[i:i + samples_per_gpu]])
return DataContainer(stacked,
batch[0].stack,
batch[0].padding_value,
cpu_only=True)
elif batch[0].stack:
for i in range(0, len(batch), samples_per_gpu):
assert isinstance(batch[i].data, torch.Tensor)
if batch[i].pad_dims is not None:
ndim = batch[i].dim()
assert ndim > batch[i].pad_dims
max_shape = [0 for _ in range(batch[i].pad_dims)]
for dim in range(1, batch[i].pad_dims + 1):
max_shape[dim - 1] = batch[i].size(-dim)
for sample in batch[i:i + samples_per_gpu]:
for dim in range(0, ndim - batch[i].pad_dims):
assert batch[i].size(dim) == sample.size(dim)
for dim in range(1, batch[i].pad_dims + 1):
max_shape[dim - 1] = max(max_shape[dim - 1],
sample.size(-dim))
padded_samples = []
for sample in batch[i:i + samples_per_gpu]:
pad = [0 for _ in range(batch[i].pad_dims * 2)]
for dim in range(1, batch[i].pad_dims + 1):
pad[2 * dim -
1] = max_shape[dim - 1] - sample.size(-dim)
padded_samples.append(
F.pad(sample.data, pad,
value=sample.padding_value))
stacked.append(default_collate(padded_samples))
elif batch[i].pad_dims is None:
stacked.append(
default_collate([
sample.data
for sample in batch[i:i + samples_per_gpu]
]))
else:
raise ValueError(
"pad_dims should be either None or integers (1-3)")
else:
for i in range(0, len(batch), samples_per_gpu):
stacked.append(
[sample.data for sample in batch[i:i + samples_per_gpu]])
return DataContainer(stacked, batch[0].stack, batch[0].padding_value)
elif isinstance(batch[0], collections.Sequence):
transposed = zip(*batch)
return [collate(samples, samples_per_gpu) for samples in transposed]
elif isinstance(batch[0], collections.Mapping):
return {
key: collate([d[key] for d in batch], samples_per_gpu)
for key in batch[0]
}
else:
return default_collate(batch)
def filter_unk_collate(batch):
batch = list(filter(lambda x: np.sum(x['ans_scores']) > 0, batch))
return default_collate(batch)
def label_squeezing_collate_fn(batch):
x, y = default_collate(batch)
return x, y.long().squeeze()
def ignore_exceptions_collate(batch):
batch = list(filter(lambda x: x is not None, batch))
return default_collate(batch)
def ignore_exceptions_collate(batch):
batch = list(
filter(lambda x: x is not None and type(x) is not torch.double, batch))
return default_collate(batch)
def my_collate(batch):
from torch.utils.data.dataloader import default_collate
batch = filter(lambda x: x is not None, batch)
return default_collate(batch)
def collate_fn(batch):
return default_collate(batch)
def my_collate(self, batch):
batch = filter(lambda x: x is not None, batch)
return default_collate(batch)