def time_range(message, color_id=None, argb_color=None):
"""A context manager to describe the enclosed block as a nested range
>>> from cupy import prof
>>> with cupy.prof.time_range('some range in green', color_id=0):
... # do something you want to measure
... pass
Args:
message: Name of a range.
color_id: range color ID
argb_color: range color in ARGB (e.g. 0xFF00FF00 for green)
.. seealso:: :func:`cupy.cuda.nvtx.RangePush`
:func:`cupy.cuda.nvtx.RangePop`
"""
if color_id is not None and argb_color is not None:
raise ValueError('Only either color_id or argb_color can be specified')
if argb_color is not None:
nvtx.RangePushC(message, argb_color)
else:
if color_id is None:
color_id = -1
nvtx.RangePush(message, color_id)
try:
yield
finally:
nvtx.RangePop()
def read(self, datafile, labelfile):
nvtx.RangePush("Read Data", 2)
#set shape to none in the beginning
shape = None
#data
#begin=time.time()
with h5.File(self.path + '/' + datafile,
"r",
driver="core",
backing_store=False) as f:
#get shape info
shape = f['climate']['data'].shape
#get min and max values and update stored values
if self.update_on_read:
self.minvals = np.minimum(
self.minvals, f['climate']['data_stats'][0, self.channels])
self.maxvals = np.maximum(
self.maxvals, f['climate']['data_stats'][1, self.channels])
#get data
data = f['climate']['data'][:, :, self.channels].astype(np.float32)
#data = data[:,:,self.channels]
#do min/max normalization
for c in range(len(self.channels)):
data[:, :, c] = (data[:, :, c] - self.minvals[c]) / (
self.maxvals[c] - self.minvals[c])
#transposition necessary because we went to NCHW
data = np.transpose(data, [2, 0, 1])
#label
with h5.File(self.path + '/' + labelfile,
"r",
driver="core",
backing_store=False) as f:
label = f['climate']['labels'][...].astype(np.int32)
#end=time.time()
#print "Time to read image %.3f s" % (end-begin)
nvtx.RangePop() # Load Data
return data, label
def main(blocks, weights, image_dir, checkpoint_dir, trn_sz):
#init horovod
nvtx.RangePush("init horovod", 1)
comm_rank = 0
comm_local_rank = 0
comm_size = 1
if horovod:
hvd.init()
comm_rank = hvd.rank()
comm_local_rank = hvd.local_rank()
comm_size = hvd.size()
if comm_rank == 0:
print("Using distributed computation with Horovod: {} total ranks".
format(comm_size, comm_rank))
nvtx.RangePop() # init horovod
#parameters
batch = 1
channels = [0, 1, 2, 10]
#blocks = [3,3,4,4,7,7,10]
num_epochs = 3
dtype = tf.float16
#session config
sess_config = tf.ConfigProto(
inter_op_parallelism_threads=2, #1
intra_op_parallelism_threads=33, #6
log_device_placement=False,
allow_soft_placement=True)
sess_config.gpu_options.visible_device_list = str(comm_local_rank)
#get data
training_graph = tf.Graph()
if comm_rank == 0:
print("Loading data...")
path, trn_data, trn_labels, val_data, val_labels, tst_data, tst_labels = load_data(
trn_sz)
if comm_rank == 0:
print("Shape of trn_data is {}".format(trn_data.shape[0]))
print("done.")
with training_graph.as_default():
nvtx.RangePush("TF Init", 3)
#create datasets
datafiles = tf.placeholder(tf.string, shape=[None])
labelfiles = tf.placeholder(tf.string, shape=[None])
trn_reader = h5_input_reader(path, channels, update_on_read=True)
trn_dataset = create_dataset(trn_reader, datafiles, labelfiles, batch,
num_epochs, comm_size, comm_rank, True)
val_reader = h5_input_reader(path, channels, update_on_read=False)
val_dataset = create_dataset(val_reader, datafiles, labelfiles, batch,
1, comm_size, comm_rank)
#create iterators
handle = tf.placeholder(tf.string,
shape=[],
name="iterator-placeholder")
iterator = tf.data.Iterator.from_string_handle(
handle, (tf.float32, tf.int32),
((batch, len(channels), image_height, image_width),
(batch, image_height, image_width)))
next_elem = iterator.get_next()
#create init handles
#trn
trn_iterator = trn_dataset.make_initializable_iterator()
trn_handle_string = trn_iterator.string_handle()
trn_init_op = iterator.make_initializer(trn_dataset)
#val
val_iterator = val_dataset.make_initializable_iterator()
val_handle_string = val_iterator.string_handle()
val_init_op = iterator.make_initializer(val_dataset)
#set up model
logit, prediction = create_tiramisu(3,
next_elem[0],
image_height,
image_width,
len(channels),
loss_weights=weights,
nb_layers_per_block=blocks,
p=0.2,
wd=1e-4,
dtype=dtype)
loss = tf.losses.sparse_softmax_cross_entropy(labels=next_elem[1],
logits=logit)
#if horovod:
# loss_average = hvd.allreduce(loss)/comm_size
#else:
# loss_average = loss
global_step = tf.train.get_or_create_global_step()
#set up optimizer
opt = tf.train.RMSPropOptimizer(learning_rate=1e-3)
if horovod:
opt = hvd.DistributedOptimizer(opt)
train_op = opt.minimize(loss, global_step=global_step)
#set up streaming metrics
labels_one_hot = tf.contrib.layers.one_hot_encoding(next_elem[1], 3)
iou_op, iou_update_op = tf.metrics.mean_iou(prediction,
labels_one_hot,
3,
weights=None,
metrics_collections=None,
updates_collections=None,
name="iou_score")
#compute epochs and stuff:
num_samples = trn_data.shape[0] // comm_size
num_steps_per_epoch = num_samples // batch
num_steps = num_epochs * num_steps_per_epoch
#hooks
#these hooks are essential. regularize the step hook by adding one additional step at the end
hooks = [tf.train.StopAtStepHook(last_step=num_steps + 1)]
if horovod:
hooks.append(hvd.BroadcastGlobalVariablesHook(0))
#initializers:
init_op = tf.global_variables_initializer()
init_local_op = tf.local_variables_initializer()
#checkpointing
#if comm_rank == 0:
# checkpoint_save_freq = num_steps_per_epoch
# checkpoint_saver = tf.train.Saver(max_to_keep = 1000)
# hooks.append(tf.train.CheckpointSaverHook(checkpoint_dir=checkpoint_dir, save_steps=checkpoint_save_freq, saver=checkpoint_saver))
# #create image dir if not exists
# if not os.path.isdir(image_dir):
# os.makedirs(image_dir)
##DEBUG
##summary
#if comm_rank == 0:
# print("write graph for debugging")
# tf.summary.scalar("loss",loss)
# summary_op = tf.summary.merge_all()
# #hooks.append(tf.train.SummarySaverHook(save_steps=num_steps_per_epoch, summary_writer=summary_writer, summary_op=summary_op))
# with tf.Session(config=sess_config) as sess:
# sess.run([init_op, init_local_op])
# #create iterator handles
# trn_handle = sess.run(trn_handle_string)
# #init iterators
# sess.run(trn_init_op, feed_dict={handle: trn_handle, datafiles: trn_data, labelfiles: trn_labels})
# #summary:
# sess.run(summary_op, feed_dict={handle: trn_handle})
# #summary file writer
# summary_writer = tf.summary.FileWriter('./logs', sess.graph)
##DEBUG
#start session
with tf.train.MonitoredTrainingSession(config=sess_config,
hooks=hooks) as sess:
#initialize
sess.run(
[init_op, init_local_op]
) #, options=tf.RunOptions(report_tensor_allocations_upon_oom=True))
#create iterator handles
trn_handle, val_handle = sess.run(
[trn_handle_string, val_handle_string])
#init iterators
sess.run(trn_init_op,
feed_dict={
handle: trn_handle,
datafiles: trn_data,
labelfiles: trn_labels
})
sess.run(val_init_op,
feed_dict={
handle: val_handle,
datafiles: val_data,
labelfiles: val_labels
})
nvtx.RangePop() # TF Init
#do the training
epoch = 1
step = 1
train_loss = 0.
nvtx.RangePush("Training Loop", 4)
nvtx.RangePush("Epoch", epoch)
start_time = time.time()
while not sess.should_stop():
#training loop
try:
nvtx.RangePush("Step", step)
#construct feed dict
_, _, train_steps, tmp_loss = sess.run(
[train_op, iou_update_op, global_step, loss],
feed_dict={handle: trn_handle})
train_steps_in_epoch = train_steps % num_steps_per_epoch
train_loss += tmp_loss
nvtx.RangePop() # Step
step += 1
if train_steps_in_epoch > 0:
#print step report
print(
"REPORT: rank {}, training loss for step {} (of {}) is {}"
.format(comm_rank, train_steps, num_steps,
train_loss / train_steps_in_epoch))
else:
end_time = time.time()
#print epoch report
train_loss /= num_steps_per_epoch
print(
"COMPLETED: rank {}, training loss for epoch {} (of {}) is {}, epoch duration {} s"
.format(comm_rank, epoch, num_epochs, train_loss,
end_time - start_time))
nvtx.RangePush("IOU", 6)
iou_score = sess.run(iou_op)
nvtx.RangePop()
print(
"COMPLETED: rank {}, training IoU for epoch {} (of {}) is {}, epoch duration {} s"
.format(comm_rank, epoch, num_epochs, iou_score,
end_time - start_time))
start_time = time.time()
#evaluation loop
eval_loss = 0.
eval_steps = 0
#update the input reader
val_reader.minvals = trn_reader.minvals
val_reader.maxvals = trn_reader.maxvals
nvtx.RangePush("Eval Loop", 7)
while True:
try:
#construct feed dict
_, tmp_loss, val_model_predictions, val_model_labels = sess.run(
[
iou_update_op, loss, prediction,
next_elem[1]
],
feed_dict={handle: val_handle})
if use_scipy:
imsave(
image_dir + '/test_pred_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.png',
np.argmax(val_model_predictions[0,
...],
axis=2) * 100)
imsave(
image_dir + '/test_label_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.png',
val_model_labels[0, ...] * 100)
else:
np.save(
image_dir + '/test_pred_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.npy',
np.argmax(val_model_predictions[0,
...],
axis=2) * 100)
np.save(
image_dir + '/test_label_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.npy',
val_model_labels[0, ...] * 100)
eval_loss += tmp_loss
eval_steps += 1
except tf.errors.OutOfRangeError:
eval_steps = np.max([eval_steps, 1])
eval_loss /= eval_steps
print(
"COMPLETED: rank {}, evaluation loss for epoch {} (of {}) is {}"
.format(comm_rank, epoch - 1, num_epochs,
eval_loss))
iou_score = sess.run(iou_op)
print(
"COMPLETED: rank {}, evaluation IoU for epoch {} (of {}) is {}"
.format(comm_rank, epoch - 1, num_epochs,
iou_score))
sess.run(val_init_op,
feed_dict={
handle: val_handle,
datafiles: val_data,
labelfiles: val_labels
})
break
nvtx.RangePop() # Eval Loop
#reset counters
epoch += 1
train_loss = 0.
step = 0
nvtx.RangePop() # Epoch
nvtx.RangePush("Epoch", epoch)
except tf.errors.OutOfRangeError:
break
nvtx.RangePop() # Epoch
nvtx.RangePop() # Training Loop
def __enter__(self):
if self.argb_color is not None:
nvtx.RangePushC(self.message, self.argb_color)
else:
nvtx.RangePush(self.message, self.color_id)
return self
def test_RangePush(self):
nvtx.RangePush("test:RangePush", 1)
nvtx.RangePop()
def main(input_path, blocks, weights, image_dir, checkpoint_dir, trn_sz,
learning_rate, loss_type, fs_type, opt_type, batch, batchnorm,
num_epochs, dtype, chkpt, filter_sz, growth, disable_training,
enable_tf_timeline):
options = None
run_metadata = None
many_runs_timeline = None
timeline_trace_fp = open("timeline_trace.pickle", "wb")
options, run_metadata, many_runs_timeline, min_timeline_step, max_timeline_step = \
init_timeline_configs(enable_tf_timeline, tf.RunOptions.FULL_TRACE, -1, -1)
global_time_logger = logger(-1, "Global Total Time", -1, True)
global_time_logger.start_timer()
#init horovod
initialization_timer_logger = logger(-1, "Initialize Horovod", -1, True)
initialization_timer_logger.start_timer()
nvtx.RangePush("init horovod", 1)
comm_rank = 0
comm_local_rank = 0
comm_size = 1
comm_local_size = 1
if horovod:
hvd.init()
comm_rank = hvd.rank()
comm_local_rank = hvd.local_rank()
comm_size = hvd.size()
#not all horovod versions have that implemented
try:
comm_local_size = hvd.local_size()
except:
comm_local_size = 1
if comm_rank == 0:
print("Using distributed computation with Horovod: {} total ranks".
format(comm_size, comm_rank))
nvtx.RangePop() # init horovod
initialization_timer_logger.set_rank(int(comm_rank))
initialization_timer_logger.end_timer()
global_time_logger.set_rank(int(comm_rank))
#parameters
channels = [0, 1, 2, 10]
per_rank_output = False
loss_print_interval = 1
#session config
initialization_timer_logger.start_timer(comm_rank, "Configure Session")
sess_config = tf.ConfigProto(
inter_op_parallelism_threads=6, #1
intra_op_parallelism_threads=1, #6
log_device_placement=False,
allow_soft_placement=True)
sess_config.gpu_options.visible_device_list = str(comm_local_rank)
initialization_timer_logger.end_timer()
#get data
initialization_timer_logger.start_timer(comm_rank, "Get Data")
training_graph = tf.Graph()
if comm_rank == 0:
print("Loading data...")
trn_data, val_data, tst_data = load_data(input_path, trn_sz, comm_rank)
if comm_rank == 0:
print("Shape of trn_data is {}".format(trn_data.shape[0]))
print("done.")
initialization_timer_logger.end_timer()
#print some stats
if comm_rank == 0:
print("Learning Rate: {}".format(learning_rate))
print("Num workers: {}".format(comm_size))
print("Local batch size: {}".format(batch))
if dtype == tf.float32:
print("Precision: {}".format("FP32"))
else:
print("Precision: {}".format("FP16"))
print("Batch normalization: {}".format(batchnorm))
print("Blocks: {}".format(blocks))
print("Growth rate: {}".format(growth))
print("Filter size: {}".format(filter_sz))
print("Channels: {}".format(channels))
print("Loss type: {}".format(loss_type))
print("Loss weights: {}".format(weights))
print("Optimizer type: {}".format(opt_type))
print("Num training samples: {}".format(trn_data.shape[0]))
print("Num validation samples: {}".format(val_data.shape[0]))
io_training_time_logger = logger(comm_rank, "IO and Training", -1, True)
io_training_time_logger.start_timer()
with training_graph.as_default():
nvtx.RangePush("TF Init", 3)
#create readers
trn_reader = h5_input_reader(input_path,
channels,
weights,
dtype,
normalization_file="stats.h5",
update_on_read=False,
comm_rank=comm_rank)
val_reader = h5_input_reader(input_path,
channels,
weights,
dtype,
normalization_file="stats.h5",
update_on_read=False,
comm_rank=comm_rank)
#create datasets
if fs_type == "local":
trn_dataset = create_dataset(trn_reader,
trn_data,
batch,
num_epochs,
comm_local_size,
comm_local_rank,
dtype,
shuffle=True)
val_dataset = create_dataset(val_reader,
val_data,
batch,
1,
comm_local_size,
comm_local_rank,
dtype,
shuffle=False)
else:
trn_dataset = create_dataset(trn_reader,
trn_data,
batch,
num_epochs,
comm_size,
comm_rank,
dtype,
shuffle=True)
val_dataset = create_dataset(val_reader,
val_data,
batch,
1,
comm_size,
comm_rank,
dtype,
shuffle=False)
#create iterators
handle = tf.placeholder(tf.string,
shape=[],
name="iterator-placeholder")
iterator = tf.data.Iterator.from_string_handle(
handle, (dtype, tf.int32, dtype),
((batch, len(channels), image_height, image_width),
(batch, image_height, image_width),
(batch, image_height, image_width)))
next_elem = iterator.get_next()
#create init handles
#trn
trn_iterator = trn_dataset.make_initializable_iterator()
trn_handle_string = trn_iterator.string_handle()
trn_init_op = iterator.make_initializer(trn_dataset)
#val
val_iterator = val_dataset.make_initializable_iterator()
val_handle_string = val_iterator.string_handle()
val_init_op = iterator.make_initializer(val_dataset)
#set up model
logit, prediction = create_tiramisu(3,
next_elem[0],
image_height,
image_width,
len(channels),
loss_weights=weights,
nb_layers_per_block=blocks,
p=0.2,
wd=1e-4,
dtype=dtype,
batchnorm=batchnorm,
growth_rate=growth,
filter_sz=filter_sz,
comm_rank=comm_rank)
#set up loss
labels_one_hot = tf.cast(tf.contrib.layers.one_hot_encoding(
next_elem[1], 3),
dtype=dtype)
loss = None
if loss_type == "weighted":
loss = tf.losses.softmax_cross_entropy(
onehot_labels=labels_one_hot,
logits=logit,
weights=next_elem[2])
elif loss_type == "focal":
loss = focal_loss(onehot_labels=labels_one_hot,
logits=logit,
alpha=1.,
gamma=2.)
else:
raise ValueError("Error, loss type {} not supported.",
format(loss_type))
if horovod:
loss_avg = hvd.allreduce(tf.cast(loss, tf.float32))
else:
loss_avg = tf.identity(loss)
#set up global step
global_step = tf.train.get_or_create_global_step()
#set up optimizer
if opt_type.startswith("LARC"):
if comm_rank == 0:
print("Enabling LARC")
train_op = get_larc_optimizer(opt_type.split("-")[1],
loss,
global_step,
learning_rate,
LARC_mode="clip",
LARC_eta=0.002,
LARC_epsilon=1. / 16000.)
else:
train_op = get_optimizer(opt_type, loss, global_step,
learning_rate)
#set up streaming metrics
iou_op, iou_update_op = tf.metrics.mean_iou(labels=next_elem[1],
predictions=tf.argmax(
prediction, axis=3),
num_classes=3,
weights=None,
metrics_collections=None,
updates_collections=None,
name="iou_score")
iou_reset_op = tf.variables_initializer([
i for i in tf.local_variables() if i.name.startswith('iou_score/')
])
if horovod:
iou_avg = hvd.allreduce(iou_op)
else:
iou_avg = tf.identity(iou_op)
#compute epochs and stuff:
if fs_type == "local":
num_samples = trn_data.shape[0] // comm_local_size
else:
num_samples = trn_data.shape[0] // comm_size
#num_steps_per_epoch = num_samples // batch
num_steps_per_epoch = 10
num_steps = num_epochs * num_steps_per_epoch
if per_rank_output:
print("Rank {} does {} steps per epoch".format(
comm_rank, num_steps_per_epoch))
#hooks
#these hooks are essential. regularize the step hook by adding one additional step at the end
hooks = [tf.train.StopAtStepHook(last_step=num_steps + 1)]
#bcast init for bcasting the model after start
init_bcast = hvd.broadcast_global_variables(0)
#initializers:
init_op = tf.global_variables_initializer()
init_local_op = tf.local_variables_initializer()
#checkpointing
if comm_rank == 0:
checkpoint_save_freq = num_steps_per_epoch * 2
checkpoint_saver = tf.train.Saver(max_to_keep=1000)
listener = checkpoint_listener(comm_rank, True)
hooks.append(
tf.train.CheckpointSaverHook(checkpoint_dir=checkpoint_dir,
save_steps=checkpoint_save_freq,
saver=checkpoint_saver,
listeners=[listener]))
#create image dir if not exists
if not os.path.isdir(image_dir):
os.makedirs(image_dir)
##DEBUG
##summary
#if comm_rank == 0:
# print("write graph for debugging")
# tf.summary.scalar("loss",loss)
# summary_op = tf.summary.merge_all()
# #hooks.append(tf.train.SummarySaverHook(save_steps=num_steps_per_epoch, summary_writer=summary_writer, summary_op=summary_op))
# with tf.Session(config=sess_config) as sess:
# sess.run([init_op, init_local_op])
# #create iterator handles
# trn_handle = sess.run(trn_handle_string)
# #init iterators
# sess.run(trn_init_op, feed_dict={handle: trn_handle, datafiles: trn_data, labelfiles: trn_labels})
# #summary:
# sess.run(summary_op, feed_dict={handle: trn_handle})
# #summary file writer
# summary_writer = tf.summary.FileWriter('./logs', sess.graph)
##DEBUG
#start session
with tf.train.MonitoredTrainingSession(config=sess_config,
hooks=hooks) as sess:
#initialize
sess.run([init_op, init_local_op])
#restore from checkpoint:
if comm_rank == 0:
load_model(sess, checkpoint_saver, checkpoint_dir, comm_rank)
#broadcast loaded model variables
sess.run(init_bcast)
#create iterator handles
trn_handle, val_handle = sess.run(
[trn_handle_string, val_handle_string],
options=options,
run_metadata=run_metadata)
update_timeline_in_range(enable_tf_timeline, run_metadata,
many_runs_timeline,
"create_iterator_handle.json")
#init iterators
sess.run(trn_init_op,
feed_dict={handle: trn_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(enable_tf_timeline, run_metadata,
many_runs_timeline,
"init_train_iterator_handle.json")
sess.run(val_init_op,
feed_dict={handle: val_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(enable_tf_timeline, run_metadata,
many_runs_timeline,
"init_val_iterator_handle.json")
nvtx.RangePop() # TF Init
# do the training
epoch = 1
step = 1
train_loss = 0.
nvtx.RangePush("Training Loop", 4)
nvtx.RangePush("Epoch", epoch)
start_time = time.time()
training_loop_timer_logger = logger(comm_rank, "Training Loop", -1,
True)
training_loop_timer_logger.start_timer()
train_steps = 0
while not (sess.should_stop()):
#training loop
try:
training_iteration_time_logger = logger(
comm_rank, "Training Iteration", epoch, True)
training_iteration_time_logger.start_timer()
nvtx.RangePush("Step", step)
if disable_training:
train_steps = sess.run([global_step],
feed_dict={handle: trn_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline, train_steps[0],
"train_" + str(global_step) + ".json",
min_timeline_step, max_timeline_step)
train_steps_in_epoch = train_steps[
0] % num_steps_per_epoch
# do the validation phase
if train_steps_in_epoch == 0:
eval_steps = 0
while True:
try:
sess.run([next_elem[1]],
feed_dict={handle: val_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline,
"val_dict" + str(eval_steps) + ".json")
eval_steps += 1
except tf.errors.OutOfRangeError:
sess.run(val_init_op,
feed_dict={handle: val_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline, "val_dict_out_" +
str(eval_steps) + ".json")
break
else:
# construct feed dict
_, train_steps, tmp_loss = sess.run(
[
train_op, global_step,
(loss if per_rank_output else loss_avg)
],
feed_dict={handle: trn_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline, train_steps,
"val_" + str(global_step) + ".json",
min_timeline_step, max_timeline_step)
if comm_rank == 0:
step_trace_fp = open(
"train_step_trace_" + str(global_step) +
".pickle", "wb")
pickle.dump(run_metadata, step_trace_fp)
train_steps_in_epoch = train_steps % num_steps_per_epoch
train_loss += tmp_loss
nvtx.RangePop() # Step
step += 1
#print step report
eff_steps = train_steps_in_epoch if (
train_steps_in_epoch > 0) else num_steps_per_epoch
if (train_steps % loss_print_interval) == 0:
if per_rank_output:
print(
"REPORT: rank {}, training loss for step {} (of {}) is {}, time {}"
.format(comm_rank, train_steps, num_steps,
train_loss / eff_steps,
time.time() - start_time))
else:
if comm_rank == 0:
print(
"REPORT: training loss for step {} (of {}) is {}, time {}"
.format(train_steps, num_steps,
train_loss / eff_steps,
time.time() - start_time))
#do the validation phase
if train_steps_in_epoch == 0:
end_time = time.time()
#print epoch report
train_loss /= num_steps_per_epoch
if per_rank_output:
print(
"COMPLETED: rank {}, training loss for epoch {} (of {}) is {}, time {} s"
.format(comm_rank, epoch, num_epochs,
train_loss,
time.time() - start_time))
else:
if comm_rank == 0:
print(
"COMPLETED: training loss for epoch {} (of {}) is {}, time {} s"
.format(epoch, num_epochs, train_loss,
time.time() - start_time))
#evaluation loop
eval_loss = 0.
eval_steps = 0
nvtx.RangePush("Eval Loop", 7)
timeline_help_count = 0
while True:
try:
#construct feed dict
_, tmp_loss, val_model_predictions, val_model_labels = sess.run(
[
iou_update_op,
(loss
if per_rank_output else loss_avg),
prediction, next_elem[1]
],
feed_dict={handle: val_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline,
timeline_help_count,
"train_" + str(global_step) + ".json",
min_timeline_step, max_timeline_step)
if comm_rank == 0:
step_trace_fp = open(
"validation_step_trace_" +
str(global_step) + ".pickle", "wb")
pickle.dump(run_metadata,
step_trace_fp)
timeline_help_count += 1
#print some images
if comm_rank == 0:
if have_imsave:
imsave(
image_dir +
'/test_pred_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.png',
np.argmax(
val_model_predictions[0,
...],
axis=2) * 100)
imsave(
image_dir +
'/test_label_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.png',
val_model_labels[0, ...] * 100)
imsave(
image_dir +
'/test_combined_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.png',
colormap[
val_model_labels[0, ...],
np.argmax(
val_model_predictions[
0, ...],
axis=2)])
else:
np.save(
image_dir +
'/test_pred_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.npy',
np.argmax(
val_model_predictions[0,
...],
axis=2) * 100)
np.save(
image_dir +
'/test_label_epoch' +
str(epoch) + '_estep' +
str(eval_steps) + '_rank' +
str(comm_rank) + '.npy',
val_model_labels[0, ...] * 100)
eval_loss += tmp_loss
eval_steps += 1
except tf.errors.OutOfRangeError:
eval_steps = np.max([eval_steps, 1])
eval_loss /= eval_steps
if per_rank_output:
print(
"COMPLETED: rank {}, evaluation loss for epoch {} (of {}) is {}"
.format(comm_rank, epoch,
num_epochs, eval_loss))
else:
if comm_rank == 0:
print(
"COMPLETED: evaluation loss for epoch {} (of {}) is {}"
.format(
epoch, num_epochs,
eval_loss))
if per_rank_output:
iou_score = sess.run(iou_op)
print(
"COMPLETED: rank {}, evaluation IoU for epoch {} (of {}) is {}"
.format(comm_rank, epoch,
num_epochs, iou_score))
else:
iou_score = sess.run(iou_avg)
if comm_rank == 0:
print(
"COMPLETED: evaluation IoU for epoch {} (of {}) is {}"
.format(
epoch, num_epochs,
iou_score))
sess.run(iou_reset_op)
sess.run(val_init_op,
feed_dict={handle: val_handle},
options=options,
run_metadata=run_metadata)
update_timeline_in_range(
enable_tf_timeline, run_metadata,
many_runs_timeline,
"train_" + str(global_step) + ".json")
if comm_rank == 0:
step_trace_fp = open(
"validation_step_trace_out.pickle",
"wb")
pickle.dump(run_metadata,
step_trace_fp)
break
nvtx.RangePop() # Eval Loop
if enable_tf_timeline:
many_runs_timeline.save('Timeliner_output.json')
# reset counters
epoch += 1
train_loss = 0.
step = 0
nvtx.RangePop() # Epoch
nvtx.RangePush("Epoch", epoch)
training_iteration_time_logger.end_timer()
except tf.errors.OutOfRangeError:
break
nvtx.RangePop() # Epoch
nvtx.RangePop() # Training Loop
training_loop_timer_logger.end_timer()
if enable_tf_timeline:
many_runs_timeline.save('Timeliner_output.json')
io_training_time_logger.end_timer()
global_time_logger.end_timer()