def _generate_batches(self, recurrent_net, batch_size, max_seqs=-1, seq_drop=0.0, max_seq_length=None, used_data_keys=None): import sys if max_seq_length is None: max_seq_length = sys.maxsize if batch_size == 0: batch_size = sys.maxsize assert batch_size > 0 if max_seqs == -1: max_seqs = float('inf') assert max_seqs > 0 assert seq_drop <= 1.0 chunk_size = self.chunk_size chunk_step = self.chunk_step from EngineBatch import Batch batch = Batch() last_seq_idx = None for seq_idx, t_start, t_end in self.iterate_seqs( chunk_size=chunk_size, chunk_step=chunk_step, used_data_keys=used_data_keys): if self.single_cluster: if last_seq_idx is not None and last_seq_idx != seq_idx: last_seq_name = self.get_tag(last_seq_idx) seq_name = self.get_tag(seq_idx) if self.cluster_map[last_seq_name] != self.cluster_map[ seq_name]: print("ClusteringDataset::_generate_batches", last_seq_idx, "is not", seq_idx, file=log.v5) yield batch batch = Batch() length = t_end - t_start if max_seq_length < 0 and length['classes'] > -max_seq_length: continue elif max_seq_length > 0 and length.max_value() > max_seq_length: continue if length.max_value() > batch_size: print("warning: sequence length (%i) larger than limit (%i)" % (length.max_value(), batch_size), file=log.v4) if self.rnd_seq_drop.random() < seq_drop: continue dt, ds = batch.try_sequence_as_slice(length) if ds > 1 and ((dt * ds).max_value() > batch_size or ds > max_seqs): yield batch batch = Batch() print("batch add slice length", length, file=log.v5) batch.add_sequence_as_slice(seq_idx=seq_idx, seq_start_frame=t_start, length=length) last_seq_idx = seq_idx if batch.get_all_slices_num_frames() > 0: yield batch
def forward_fill_queue(self): """ Full sequence forwarding, no chunking (at the moment). """ assert self.train_started if self.is_forwarding_finished: return # We will ignore max_seq_length. batch_size = self.config.int('batch_size', 1) max_seqs = self.config.int('max_seqs', -1) if max_seqs <= 0: max_seqs = float('inf') dataset = self.engine.train_data from EngineBatch import Batch # Collect all batches. forward_batches = [] ":type: list[EngineBatch.Batch]" num_seqs = 0 while self._device_exec("have_space_in_forward_data_queue", num_seqs=num_seqs): # Load next sequence for forwarding, keep all which are still needed for training. if not dataset.is_less_than_num_seqs(self.forward_current_seq): self.is_forwarding_finished = True break dataset.load_seqs(self.train_start_seq, self.forward_current_seq + 1) seq_len = dataset.get_seq_length(self.forward_current_seq) if not forward_batches: forward_batches.append(Batch()) batch = forward_batches[-1] dt, ds = batch.try_sequence_as_slice(seq_len) if ds > 1 and ((dt * ds).max_value() > batch_size or ds > max_seqs): batch = Batch() forward_batches.append(batch) batch.add_sequence_as_slice(seq_idx=self.forward_current_seq, seq_start_frame=0, length=seq_len) num_seqs += 1 self.forward_current_seq += 1 # Forward the batches. from EngineUtil import assign_dev_data for batch in forward_batches: print >> log.v4, "SeqTrainParallelControl, forward %r" % batch success = assign_dev_data(self.train_device, dataset, [batch], load_seqs=False) assert success, "failed to allocate & assign data" self.train_device.update_data() self._device_exec("do_forward", batch=batch) self._device_exec("train_check_calc_loss")
def assign_dev_data_single_seq(device, dataset, seq, load_seqs=True): """ :type device: Device.Device :type dataset: Dataset.Dataset :param int seq: sorted seq idx :return: whether we succeeded :rtype: bool """ batch = Batch() batch.init_with_one_full_sequence(seq_idx=seq, dataset=dataset) success, _ = assign_dev_data(device, dataset, [batch], load_seqs=load_seqs) return success
def assign_dev_data_single_seq(device, dataset, seq, load_seqs=True): """ :type device: Device.Device :type dataset: Dataset.Dataset :param int seq: sorted seq idx :return: whether we succeeded :rtype: bool """ batch = Batch() batch.add_frames(seq_idx=seq, seq_start_frame=0, length=dataset.get_seq_length(seq)) success, _ = assign_dev_data(device, dataset, [batch], load_seqs=load_seqs) return success
def forward_single(self, dataset, seq_idx, output_layer_name=None): """ Forwards a single sequence. If you want to perform search, and get a number of hyps out, use :func:`search_single`. :param Dataset.Dataset dataset: :param int seq_idx: :param str|None output_layer_name: e.g. "output". if not set, will read from config "forward_output_layer" :return: numpy array, output in time major format (time,dim) :rtype: numpy.ndarray """ batch = Batch() batch.init_with_one_full_sequence(seq_idx=seq_idx, dataset=dataset) batch_generator = iter([batch]) batches = BatchSetGenerator(dataset, generator=batch_generator) forwarder = ClassificationTaskThread(self.network, self.devices, dataset, batches) forwarder.join() assert forwarder.output.shape[1] == 1 return forwarder.output[:, 0]
def _generate_batches(self, recurrent_net, batch_size, max_seqs=-1, seq_drop=0.0, max_seq_length=sys.maxsize, used_data_keys=None): """ :param bool recurrent_net: If True, the batch might have a batch seq dimension > 1. Otherwise, the batch seq dimension is always 1 and multiple seqs will be concatenated. :param int batch_size: Max number of frames in one batch. :param int max_seqs: Max number of seqs per batch. :param set(str)|None used_data_keys: """ if batch_size == 0: batch_size = sys.maxsize assert batch_size > 0 if max_seqs == -1: max_seqs = float('inf') assert max_seqs > 0 assert seq_drop <= 1.0 chunk_size = self.chunk_size chunk_step = self.chunk_step if not recurrent_net: if chunk_size != 0: print("Non-recurrent network, chunk size %i:%i ignored" % (chunk_size, chunk_step), file=log.v4) chunk_size = 0 batch = Batch() for seq_idx, t_start, t_end in self._iterate_seqs( chunk_size=chunk_size, chunk_step=chunk_step, used_data_keys=used_data_keys): if recurrent_net: length = t_end - t_start if max_seq_length < 0 and length['classes'] > -max_seq_length: continue elif max_seq_length > 0 and length.max_value( ) > max_seq_length: continue if length.max_value() > batch_size: print( "warning: sequence length (%i) larger than limit (%i)" % (length.max_value(), batch_size), file=log.v4) if self.rnd_seq_drop.random() < seq_drop: continue dt, ds = batch.try_sequence_as_slice(length) if ds > 1 and ((dt * ds).max_value() > batch_size or ds > max_seqs): yield batch batch = Batch() batch.add_sequence_as_slice(seq_idx=seq_idx, seq_start_frame=t_start, length=length) else: # Not recurrent. while t_start.max_value() < t_end.max_value(): length = t_end - t_start num_frames = NumbersDict.min([ length, batch_size - batch.get_all_slices_num_frames() ]) assert num_frames.max_value() > 0 batch.add_frames(seq_idx=seq_idx, seq_start_frame=t_start, length=num_frames) if batch.get_all_slices_num_frames( ) >= batch_size or batch.get_num_seqs() > max_seqs: yield batch batch = Batch() t_start += num_frames if batch.get_all_slices_num_frames() > 0: yield batch
def generate_batch(seq_idx, dataset): batch = Batch() batch.add_frames(seq_idx=seq_idx, seq_start_frame=0, length=dataset.get_seq_length(seq_idx)) return batch
def _generate_batches(self, recurrent_net, batch_size, max_seqs=-1, max_seq_length=sys.maxsize, min_seq_length=0, seq_drop=0.0, max_total_num_seqs=-1, used_data_keys=None): """ :param bool recurrent_net: If True, the batch might have a batch seq dimension > 1. Otherwise, the batch seq dimension is always 1 and multiple seqs will be concatenated. :param int batch_size: Max number of frames in one batch. :param int max_seqs: Max number of seqs per batch. :param int max_total_num_seqs: :param int|dict[str,int]|NumbersDict max_seq_length: :param set(str)|None used_data_keys: """ if batch_size == 0: batch_size = sys.maxsize assert batch_size > 0 if max_seqs == -1: max_seqs = float('inf') if not max_seq_length: max_seq_length = sys.maxsize if isinstance(max_seq_length, int) and max_seq_length < 0: max_seq_length = {"classes": -max_seq_length} max_seq_length = NumbersDict(max_seq_length) min_seq_length = NumbersDict(min_seq_length) assert max_seqs > 0 assert seq_drop <= 1.0 if not max_total_num_seqs or max_total_num_seqs < 0: max_total_num_seqs = float("inf") chunk_size = self.chunk_size chunk_step = self.chunk_step if not recurrent_net: if chunk_size != 0: print("Non-recurrent network, chunk size %s:%s ignored" % (chunk_size, chunk_step), file=log.v4) chunk_size = 0 batch = Batch() ctx_lr = self._get_context_window_left_right() total_num_seqs = 0 last_seq_idx = -1 for seq_idx, t_start, t_end in self.iterate_seqs( chunk_size=chunk_size, chunk_step=chunk_step, used_data_keys=used_data_keys): if seq_idx != last_seq_idx and total_num_seqs >= max_total_num_seqs: break if ctx_lr: t_start -= ctx_lr[0] t_end += ctx_lr[1] if recurrent_net: length = t_end - t_start if length.any_compare(max_seq_length, (lambda a, b: a > b)): continue if length.any_compare(min_seq_length, (lambda a, b: a < b)): continue if length.max_value() > batch_size: print( "warning: sequence length (%i) larger than limit (%i)" % (length.max_value(), batch_size), file=log.v4) if self.rnd_seq_drop.random() < seq_drop: continue dt, ds = batch.try_sequence_as_slice(length) if ds > 1 and ((dt * ds).max_value() > batch_size or ds > max_seqs): yield batch batch = Batch() batch.add_sequence_as_slice(seq_idx=seq_idx, seq_start_frame=t_start, length=length) else: # Not recurrent. while t_start.max_value() < t_end.max_value(): length = t_end - t_start num_frames = NumbersDict.min([ length, batch_size - batch.get_all_slices_num_frames() ]) assert num_frames.max_value() > 0 batch.add_frames(seq_idx=seq_idx, seq_start_frame=t_start, length=num_frames) if batch.get_all_slices_num_frames( ) >= batch_size or batch.get_num_seqs() > max_seqs: yield batch batch = Batch() t_start += num_frames if seq_idx != last_seq_idx: last_seq_idx = seq_idx total_num_seqs += 1 if batch.get_all_slices_num_frames() > 0: yield batch