def _sync_metrics(self, metrics):
"""
Sync training metrics across workers.
A handful of special cases are handled as exceptions, and the remaining metrics
are simply averaged across workers.
"""
if not is_distributed():
# nothing special needed
return metrics
all_versions = all_gather_list(metrics)
return aggregate_unnamed_reports(all_versions)
def _eval_single_world(opt, agent, task):
logging.info(
f'Evaluating task {task} using datatype {opt.get("datatype")}.')
# set up world logger
world_logger = WorldLogger(opt) if opt['world_logs'] else None
task_opt = opt.copy() # copy opt since we're editing the task
task_opt['task'] = task
world = create_task(task_opt, agent) # create worlds for tasks
# set up logging
log_every_n_secs = opt.get('log_every_n_secs', -1)
if log_every_n_secs <= 0:
log_every_n_secs = float('inf')
log_time = TimeLogger()
# max number of examples to evaluate
max_cnt = opt['num_examples'] if opt['num_examples'] > 0 else float('inf')
cnt = 0
total_cnt = world.num_examples()
if is_distributed():
logging.warning('Progress bar is approximate in distributed mode.')
while not world.epoch_done() and cnt < max_cnt:
cnt += opt.get('batchsize', 1)
world.parley()
if world_logger is not None:
world_logger.log(world)
if opt['display_examples']:
# display examples
print(world.display() + '\n~~')
if log_time.time() > log_every_n_secs:
report = world.report()
text, report = log_time.log(report.get('exs', 0),
min(max_cnt, total_cnt), report)
logging.info(text)
if world_logger is not None:
# dump world acts to file
world_logger.reset() # add final acts to logs
if is_distributed():
rank = get_rank()
base_outfile, extension = os.path.splitext(opt['world_logs'])
outfile = base_outfile + f'_{rank}' + extension
else:
outfile = opt['world_logs']
world_logger.write(outfile, world, file_format=opt['save_format'])
report = aggregate_unnamed_reports(all_gather_list(world.report()))
world.reset()
return report
def _get_time(self, world: World) -> Tuple[float, float, float]:
"""
Return train, log, and validate timing.
If relying on the time for validation/logging/max train time purposes,
we sync and return primary worker's time.
Otherwise, it's not super relevant what we do here.
**SIDE EFFECT**: Update _total_epochs trained.
:param world:
current running world
:return (train, log, valid):
return time for each of train, log, and validation
"""
if (
self.max_train_time < float('inf')
or self.log_every_n_secs < float('inf')
or self.val_every_n_secs < float('inf')
or self.val_every_n_epochs < float('inf')
or self.max_num_epochs < float('inf')
):
self._total_epochs = self._preempted_epochs + sum(
all_gather_list(world.get_total_epochs())
)
train_time, log_time, validate_time, save_time = sync_object(
(
self.train_time.time(),
self.log_time.time(),
self.validate_time.time(),
self.save_time.time(),
)
)
else:
train_time, log_time, validate_time, save_time = (
self.train_time.time(),
self.log_time.time(),
self.validate_time.time(),
self.save_time.time(),
)
self._total_epochs = self._preempted_epochs + (
num_workers() * world.get_total_epochs()
)
return train_time, log_time, validate_time, save_time
def train(self):
"""
Perform a training run.
:return: tuple of reports (validation_report, test_report)
"""
logging.info('training...')
opt = self.opt
world = self.world
with world:
while True:
# do one example / batch of examples
try:
world.parley()
except StopTrainException as e:
logging.info(f"Stopping from {e}")
break
self.parleys += 1
# get the total training examples done, compute epochs
self._total_epochs = self._preempted_epochs + sum(
all_gather_list(world.get_total_epochs()))
exs_per_epoch = world.num_examples()
self._total_exs = int(
np.round(self._total_epochs * exs_per_epoch))
# and use the primary worker's timings for everything
train_time, log_time, validate_time = sync_object((
self.train_time.time(),
self.log_time.time(),
self.validate_time.time(),
))
# check counters and timers
if self._total_epochs >= self.max_num_epochs:
self.log()
logging.info(
f'num_epochs completed:{self.max_num_epochs} time elapsed:{train_time}s'
)
break
if train_time > self.max_train_time:
logging.info(f'max_train_time elapsed:{train_time}s')
break
if log_time > self.log_every_n_secs:
self.log()
if (validate_time > self.val_every_n_secs
or self._total_epochs - self.last_valid_epoch >=
self.val_every_n_epochs):
try:
# log before we validate
self.log()
world.reset_metrics()
stop_training = self.validate()
except StopTrainException:
break
# reset the log time because we logged right before validating
self.log_time.reset()
self.last_valid_epoch = self._total_epochs
if stop_training:
break
# make sure metrics are clean before we log
world.reset_metrics()
if (self.save_time.time() > self.save_every_n_secs
and opt.get('model_file') and is_primary_worker()):
logging.info(
f"saving model checkpoint: {opt['model_file']}.checkpoint"
)
if opt['tensorboard_log'] and is_primary_worker():
self.tb_logger.flush()
self.save_model('.checkpoint')
self.save_time.reset()
if not self.saved and is_primary_worker():
# save agent
self.save_model()
# there's a rare edge case where the we never saved the model, and we try
# # to reload it. This sync_object ensures all workers wait for the primary
# worker to finish flushing before loading from disk.
sync_object(None)
if opt.get('model_file'):
# clean up all our memory, just to make sure we don't OOM on GPU when
# reloading the world
del world
del self.world
del self.agent
del self.valid_worlds
# reload best validation model
self.agent = create_agent(opt)
# perform final validation/testing
valid_worlds = load_eval_worlds(self.agent, opt, 'valid')
max_exs = opt['validation_max_exs'] if opt.get(
'short_final_eval') else -1
v_report = self._run_eval(valid_worlds,
opt,
'valid',
max_exs,
write_log=True)
test_worlds = load_eval_worlds(self.agent, opt, 'test')
t_report = self._run_eval(test_worlds,
opt,
'test',
max_exs,
write_log=True)
if valid_worlds:
for valid_world in valid_worlds:
valid_world.shutdown()
if test_worlds:
for test_world in test_worlds:
test_world.shutdown()
print_announcements(opt)
return v_report, t_report
def _eval_single_world(opt, agent, task):
logging.info(
f'Evaluating task {task} using datatype {opt.get("datatype")}.')
# set up world logger
task_opt = opt.copy() # copy opt since we're editing the task
task_opt['task'] = task
# add task suffix in case of multi-tasking
if opt['world_logs']:
task_opt['world_logs'] = get_task_world_logs(
task,
task_opt['world_logs'],
is_multitask=len(opt['task'].split(',')) > 1)
world_logger = WorldLogger(task_opt) if task_opt['world_logs'] else None
world = create_task(task_opt, agent) # create worlds for tasks
# set up logging
log_every_n_secs = opt.get('log_every_n_secs', -1)
if log_every_n_secs <= 0:
log_every_n_secs = float('inf')
log_time = TimeLogger()
# max number of examples to evaluate
max_cnt = opt['num_examples'] if opt['num_examples'] > 0 else float('inf')
cnt = 0
total_cnt = world.num_examples()
if is_distributed():
logging.warning('Progress bar is approximate in distributed mode.')
while not world.epoch_done() and cnt < max_cnt:
cnt += opt.get('batchsize', 1)
world.parley()
if world_logger is not None:
world_logger.log(world)
if opt['display_examples']:
# display examples
print(world.display() + '\n~~')
if log_time.time() > log_every_n_secs:
report = world.report()
text, report = log_time.log(report.get('exs', 0),
min(max_cnt, total_cnt), report)
logging.info(text)
if world_logger is not None:
# dump world acts to file
world_logger.reset() # add final acts to logs
if is_distributed():
rank = get_rank()
base_outfile, extension = os.path.splitext(task_opt['world_logs'])
outfile = base_outfile + f'_{rank}' + extension
else:
outfile = task_opt['world_logs']
world_logger.write(outfile, world, file_format=opt['save_format'])
report = aggregate_unnamed_reports(all_gather_list(world.report()))
if isinstance(world.agents, list) and len(world.agents) > 1:
classifier_agent = world.agents[CLASSIFIER_AGENT]
if hasattr(classifier_agent, 'calc_auc') and classifier_agent.calc_auc:
for class_indices, curr_auc in zip(
classifier_agent.auc_class_indices, classifier_agent.aucs):
report[
f'AUC_{classifier_agent.class_list[class_indices]}'] = curr_auc
classifier_agent.reset_auc()
# for safety measures
agent.reset_auc()
world.reset()
return report
def train(self):
"""
Perform a training run.
:return: tuple of reports (validation_report, test_report)
"""
opt = self.opt
world = self.world
with world:
while True:
# do one example / batch of examples
try:
world.parley()
except StopTrainException:
if is_distributed():
raise RuntimeError(
"StopTrainException not supported for "
"distributed mode")
break
self.parleys += 1
# get the total training examples done, compute epochs
self._total_epochs = self._preempted_epochs + sum(
all_gather_list(world.get_total_epochs()))
exs_per_epoch = world.num_examples()
self._total_exs = int(
np.round(self._total_epochs * exs_per_epoch))
# and use the primary worker's timings for everything
train_time, log_time, validate_time = sync_object((
self.train_time.time(),
self.log_time.time(),
self.validate_time.time(),
))
# check counters and timers
if self._total_epochs >= self.max_num_epochs:
self.log()
print(
'[ num_epochs completed:{} time elapsed:{}s ]'.format(
self.max_num_epochs, train_time))
break
if train_time > self.max_train_time:
print('[ max_train_time elapsed:{}s ]'.format(train_time))
break
if log_time > self.log_every_n_secs:
self.log()
if (validate_time > self.val_every_n_secs
or self._total_epochs - self.last_valid_epoch >=
self.val_every_n_epochs):
try:
# log before we validate
self.log()
world.reset_metrics()
stop_training = self.validate()
except StopTrainException:
if is_distributed():
raise RuntimeError(
"StopTrainException not supported for distributed mode"
)
break
# reset the log time because we logged right before validating
self.log_time.reset()
self.last_valid_epoch = self._total_epochs
if stop_training:
break
# make sure metrics are clean before we log
world.reset_metrics()
if (self.save_time.time() > self.save_every_n_secs
and opt.get('model_file') and is_primary_worker()):
print("[ saving model checkpoint: {}.checkpoint".format(
opt['model_file']))
if opt['tensorboard_log'] and is_primary_worker():
self.tb_logger.flush()
self.save_model('.checkpoint')
self.save_time.reset()
if not self.saved and is_primary_worker():
# save agent
self.save_model()
elif opt.get('model_file'):
# reload best validation model
self.agent = create_agent(opt)
valid_worlds = load_eval_worlds(self.agent, opt, 'valid')
max_exs = opt['validation_max_exs'] if opt.get(
'short_final_eval') else -1
v_report = self._run_eval(valid_worlds,
opt,
'valid',
max_exs,
write_log=True)
test_worlds = load_eval_worlds(self.agent, opt, 'test')
t_report = self._run_eval(test_worlds,
opt,
'test',
max_exs,
write_log=True)
if valid_worlds:
for valid_world in valid_worlds:
valid_world.shutdown()
if test_worlds:
for test_world in test_worlds:
test_world.shutdown()
print_announcements(opt)
return v_report, t_report
def _save_outputs(self, opt, world, logger, episode_metrics):
if is_distributed(): # flatten everything intelligently if need be
world_report = aggregate_unnamed_reports(
all_gather_list(world.report()))
episode_metrics_unflattened = all_gather_list(episode_metrics)
flattened = []
for rank_elem in episode_metrics_unflattened:
for elem in rank_elem:
flattened.append(elem)
episode_metrics = flattened
else:
world_report = world.report()
logging.report("Final report:\n" + nice_report(world_report))
report = dict_report(world_report)
def get_episode_report(goal, episode_metric):
metrics_dict = dict_report(episode_metric.report())
metrics_dict["goal"] = goal
return metrics_dict
report["tod_metrics"] = [
get_episode_report(g, e) for g, e in episode_metrics
]
if "report_filename" in opt and opt["report_filename"] is not None:
if len(world_report) == 0:
logging.warning("Report is empty; not saving report")
report_fname = f"{opt['report_filename']}.json"
# Save report
if not is_distributed() or is_primary_worker():
with PathManager.open(report_fname, "w") as f:
logging.info(f"Saving model report to {report_fname}")
json.dump({"opt": opt, "report": report}, f, indent=4)
f.write("\n") # for jq
if "world_logs" in opt and opt["world_logs"] is not None:
if is_distributed(): # Save separately, then aggregate together
rank = get_rank()
log_outfile_part = (
f"{opt['world_logs']}_{opt['save_format']}_{rank}.jsonl")
logger.write(log_outfile_part,
world,
file_format=opt["save_format"])
sync_object(None)
if is_primary_worker():
log_outfile = f"{opt['world_logs']}_{opt['save_format']}.jsonl"
log_outfile_metadata = (
f"{opt['world_logs']}_{opt['save_format']}.metadata")
with open(log_outfile, "w+") as outfile:
for rank in range(num_workers()):
log_outfile_part = (
f"{opt['world_logs']}_{opt['save_format']}_{rank}.jsonl"
)
with open(log_outfile_part) as infile:
for line in infile:
json_blob = json.loads(line.strip())
if (
len(json_blob["dialog"]) < 2
): # skip when we don't have generation
continue
json_blob[
"metadata_path"] = log_outfile_metadata
outfile.write(json.dumps(json_blob))
outfile.write("\n")
log_output_part_metadata = f"{opt['world_logs']}_{opt['save_format']}_{rank}.metadata"
if rank == 0:
copyfile(log_output_part_metadata,
log_outfile_metadata),
os.remove(log_outfile_part)
os.remove(log_output_part_metadata)
else:
log_outfile = f"{opt['world_logs']}_{opt['save_format']}.jsonl"
logger.write(log_outfile,
world,
file_format=opt["save_format"])
return report