def save(self, fname):
if not fname.endswith('.yaml'):
fname = ".".join([fname, 'yaml'])
try:
os.remove(fname)
except OSError:
pass
records_dict = self.value()
distiller.yaml_ordered_save(fname, records_dict)
return fname
def image_classifier_ptq_lapq(model, criterion, loggers, args):
# data loader function for splitting the validation set.
args = deepcopy(args)
effective_test_size_bak = args.effective_test_size
args.effective_test_size = args.lapq_eval_size
eval_data_loader = classifier.load_data(args, load_train=False, load_val=False, load_test=True, fixed_subset=True)
args.effective_test_size = effective_test_size_bak
test_data_loader = classifier.load_data(args, load_train=False, load_val=False, load_test=True)
model = model.eval()
device = next(model.parameters()).device
if args.lapq_eval_memoize_dataloader:
images_batches = []
targets_batches = []
for images, targets in eval_data_loader:
images_batches.append(images.to(device))
targets_batches.append(targets.to(device))
memoized_data_loader = [(torch.cat(images_batches), torch.cat(targets_batches))]
else:
memoized_data_loader = None
def eval_fn(model):
if memoized_data_loader:
loss = 0
for images, targets in memoized_data_loader:
outputs = model(images)
loss += criterion(outputs, targets).item()
loss = loss / len(memoized_data_loader)
else:
_, _, loss = classifier.test(eval_data_loader, model, criterion, loggers, None, args)
return loss
def test_fn(model):
top1, top5, loss = classifier.test(test_data_loader, model, criterion, loggers, None, args)
return OrderedDict([('top-1', top1), ('top-5', top5), ('loss', loss)])
args.device = device
if args.resumed_checkpoint_path:
args.load_model_path = args.resumed_checkpoint_path
if args.load_model_path:
msglogger.info("Loading checkpoint from %s" % args.load_model_path)
model = apputils.load_lean_checkpoint(model, args.load_model_path,
model_device=args.device)
quantizer = distiller.quantization.PostTrainLinearQuantizer.from_args(model, args)
dummy_input = torch.rand(*model.input_shape, device=args.device)
model, qp_dict = lapq.ptq_coordinate_search(quantizer, dummy_input, eval_fn, test_fn=test_fn,
**lapq.cmdline_args_to_dict(args))
results = test_fn(quantizer.model)
msglogger.info("Arch: %s \tTest: \t top1 = %.3f \t top5 = %.3f \t loss = %.3f" %
(args.arch, results['top-1'], results['top-5'], results['loss']))
distiller.yaml_ordered_save('%s.quant_params_dict.yaml' % args.arch, qp_dict)
distiller.apputils.save_checkpoint(0, args.arch, model,
extras={'top1': results['top-1'], 'qp_dict': qp_dict}, name=args.name,
dir=msglogger.logdir)