| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| |
| # pylint: skip-file |
| from __future__ import print_function |
| import numpy as np |
| import mxnet as mx |
| import copy |
| import math |
| import ctypes |
| import random |
| import itertools |
| from numpy.testing import assert_allclose, assert_array_equal |
| from mxnet.test_utils import * |
| from mxnet.base import py_str, MXNetError, _as_list, SymbolHandle, check_call, _LIB, c_handle_array, mx_uint |
| from common import setup_module, with_seed, teardown |
| import unittest |
| from mxnet.gluon.model_zoo.vision import get_model |
| |
| def make_subgraph(subg, *args): |
| js = subg.tojson() |
| return mx.sym._internal._CachedOp(*args, subgraph=js) |
| |
| @with_seed() |
| def test_make_subgraph(): |
| def make_subgraph1(stype): |
| a = mx.symbol.Variable(name='a', stype=stype) |
| b = mx.symbol.Variable(name='b', stype=stype) |
| c = a * b |
| d = c * 2 |
| |
| a1 = mx.symbol.Variable(name='a', stype=stype) |
| b1 = mx.symbol.Variable(name='b', stype=stype) |
| y = make_subgraph(c, a1, b1) |
| y = y * 2 |
| |
| s = (10, 10) |
| a_arr = mx.nd.array(np.random.normal(-0.1, 0.1, size=s), |
| ctx=default_context()).tostype(stype) |
| b_arr = mx.nd.array(np.random.normal(-0.1, 0.1, size=s), |
| ctx=default_context()).tostype(stype) |
| return (d, y, {'a': a_arr, 'b': b_arr}, {}) |
| |
| def create_weights(shapes, names): |
| nd_dict = {} |
| sym_dict = {} |
| assert len(shapes) == len(names) |
| for i in range(len(shapes)): |
| sym_dict[names[i]] = mx.symbol.Variable(names[i]) |
| nd_dict[names[i]] = mx.nd.array(np.ones(shapes[i]), ctx=default_context()) |
| return (nd_dict, sym_dict) |
| |
| def make_subgraph_weight(orig, shape, stype): |
| arg_shapes, out_shapes, aux_shapes = orig.infer_shape(data=shape) |
| weight_shapes = arg_shapes[1:] |
| weight_names = orig.list_arguments()[1:] |
| weight_dict, weight_sym_dict = create_weights(weight_shapes, weight_names) |
| aux_dict, aux_sym_dict = create_weights(aux_shapes, orig.list_auxiliary_states()) |
| |
| input_dict = copy.deepcopy(weight_sym_dict) |
| input_dict.update(aux_sym_dict) |
| input_dict['data'] = mx.symbol.Variable('data', stype=stype) |
| input_list = [] |
| for name in orig.list_inputs(): |
| assert name in input_dict.keys() |
| input_list.append(input_dict[name]) |
| subg = make_subgraph(orig, *input_list) |
| |
| arr = mx.nd.random.uniform(-1, 1, shape=shape, ctx=default_context()).tostype(stype) |
| arg_dict = weight_dict |
| arg_dict['data'] = arr |
| return (orig, subg, arg_dict, aux_dict) |
| |
| def make_subgraph2(stype, out_mean_var): |
| data = mx.symbol.Variable('data', stype=stype) |
| orig = mx.symbol.BatchNorm(data, fix_gamma=False, |
| output_mean_var=out_mean_var, name="batchnorm") |
| s = (10, 10) |
| return make_subgraph_weight(orig, s, stype) |
| |
| def make_subgraph3(stype): |
| data = mx.symbol.Variable('data', stype=stype) |
| conv1 = mx.symbol.Convolution(data=data, kernel=(3, 3), num_filter=16, no_bias=True) |
| bn1 = mx.symbol.BatchNorm(conv1, fix_gamma=False, output_mean_var=False) |
| conv2 = mx.symbol.Convolution(data=data, kernel=(3, 3), num_filter=16, no_bias=True) |
| bn2 = mx.symbol.BatchNorm(conv2, fix_gamma=False, output_mean_var=False) |
| orig = bn1 + bn2 |
| s = (1, 3, 32, 32) |
| return make_subgraph_weight(orig, s, stype) |
| |
| def make_subgraph4(stype): |
| model = get_model('resnet18_v1') |
| model.hybridize() |
| model.initialize() |
| s = (1, 3, 32, 32) |
| data = mx.nd.random.normal(shape=s) |
| out = model(data) |
| model.export('resnet18') |
| orig = mx.sym.load('resnet18-symbol.json') |
| return make_subgraph_weight(orig, s, stype) |
| |
| make_subgraphs = [make_subgraph1, |
| lambda stype: make_subgraph2(stype, False), |
| lambda stype: make_subgraph2(stype, True), |
| make_subgraph3, make_subgraph4] |
| stypes = ['default', 'row_sparse'] |
| for make_subg in make_subgraphs: |
| for stype in stypes: |
| orig, subg, inputs, aux_states = make_subg(stype) |
| all_inputs = copy.deepcopy(inputs) |
| all_inputs.update(aux_states) |
| args_grad = {key : mx.nd.empty(shape=all_inputs[key].shape) for key in all_inputs.keys()} |
| e1 = orig.bind(ctx=default_context(), args=all_inputs, args_grad=args_grad, |
| aux_states=all_inputs) |
| args_grad = {key : mx.nd.empty(shape=all_inputs[key].shape) for key in all_inputs.keys()} |
| e2 = subg.bind(ctx=default_context(), args=all_inputs, args_grad=args_grad, |
| aux_states=all_inputs) |
| e1.forward(is_train=True) |
| e2.forward(is_train=True) |
| for i in range(len(e1.outputs)): |
| assert_almost_equal(e1.outputs[i].asnumpy(), e2.outputs[i].asnumpy(), |
| rtol=0.001, atol=0.0001) |
| |
| out_grads = [mx.nd.random.uniform(-1, 1, shape=out.shape, ctx=default_context()) |
| for out in e1.outputs] |
| e1.backward(out_grads) |
| e2.backward(out_grads) |
| for i in range(len(e1.grad_arrays)): |
| assert_almost_equal(e1.grad_arrays[i].asnumpy(), e2.grad_arrays[i].asnumpy(), |
| rtol=0.001, atol=0.0001) |
| |
| |
| if __name__ == '__main__': |
| import nose |
| nose.runmodule() |
