caffe2/python/modeling/initializers_test.py

# Copyright (c) 2016-present, Facebook, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##############################################################################

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals

import unittest
from caffe2.python import brew, model_helper, workspace
from caffe2.python.modeling.initializers import (
        Initializer, pFP16Initializer)


class InitializerTest(unittest.TestCase):
    def test_fc_initializer(self):
        model = model_helper.ModelHelper(name="test")
        data = model.net.AddExternalInput("data")
        fc1 = brew.fc(model, data, "fc1", dim_in=1, dim_out=1)

        # no operator name set, will use default
        fc2 = brew.fc(model, fc1, "fc2", dim_in=1, dim_out=1,
                      WeightInitializer=Initializer)

        # no operator name set, will use custom
        fc3 = brew.fc(model, fc2, "fc3", dim_in=1, dim_out=1,
                      WeightInitializer=Initializer,
                      weight_init=("ConstantFill", {}),
        )

        # operator name set, no initializer class set
        fc4 = brew.fc(model, fc3, "fc4", dim_in=1, dim_out=1,
                      WeightInitializer=None,
                      weight_init=("ConstantFill", {})
        )

    @unittest.skipIf(not workspace.has_gpu_support, 'No GPU support')
    def test_fc_fp16_initializer(self):
        model = model_helper.ModelHelper(name="test")
        data = model.net.AddExternalInput("data")
        fc1 = brew.fc(model, data, "fc1", dim_in=1, dim_out=1)

        # default operator, pFP16Initializer
        fc2 = brew.fc(model, fc1, "fc2", dim_in=1, dim_out=1,
                      WeightInitializer=pFP16Initializer
        )

        # specified operator, pFP16Initializer
        fc3 = brew.fc(model, fc2, "fc3", dim_in=1, dim_out=1,
                      weight_init=("ConstantFill", {}),
                      WeightInitializer=pFP16Initializer
        )

    def test_fc_external_initializer(self):
        model = model_helper.ModelHelper(name="test", init_params=False)
        data = model.net.AddExternalInput("data")
        fc1 = brew.fc(model, data, "fc1", dim_in=1, dim_out=1)  # noqa
        self.assertEqual(len(model.net.Proto().op), 1)
        self.assertEqual(len(model.param_init_net.Proto().op), 0)