src/operator/quantization/quantized_reshape.cc

/*
 * 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.
 */

/*!
 * \file quantized_reshape.cc
 * \author: Adam Grabowski, adam.grabowski@intel.com
 */

#include <utility>
#include "quantized_reshape-inl.h"

namespace mxnet {
namespace op {

void QuantizedReshapeCompute(const nnvm::NodeAttrs& attrs,
                             const OpContext& ctx,
                             const std::vector<TBlob>& inputs,
                             const std::vector<OpReqType>& req,
                             const std::vector<TBlob>& outputs) {
  CHECK_EQ(inputs.size(), 3U);
  CHECK_EQ(outputs.size(), 3U);
  CHECK_EQ(req.size(), 3U);

  if (req[0] != kWriteInplace)
    UnaryOp::IdentityCompute<cpu>(attrs, ctx, inputs, req, outputs);

  *outputs[1].dptr<float>() = *inputs[1].dptr<float>();
  *outputs[2].dptr<float>() = *inputs[2].dptr<float>();
}

#define MXNET_OPERATOR_REGISTER_QUANTIZED_RESHAPE(name)                                      \
  NNVM_REGISTER_OP(name)                                                                     \
      .set_num_inputs(3)                                                                     \
      .set_num_outputs(3)                                                                    \
      .set_attr<nnvm::FListInputNames>(                                                      \
          "FListInputNames",                                                                 \
          [](const NodeAttrs& attrs) {                                                       \
            return std::vector<std::string>{"data", "min_data", "max_data"};                 \
          })                                                                                 \
      .set_attr<nnvm::FListOutputNames>(                                                     \
          "FListOutputNames",                                                                \
          [](const NodeAttrs& attrs) {                                                       \
            return std::vector<std::string>{"output", "min_output", "max_output"};           \
          })                                                                                 \
      .set_attr<nnvm::FInplaceOption>(                                                       \
          "FInplaceOption",                                                                  \
          [](const NodeAttrs& attrs) {                                                       \
            return std::vector<std::pair<int, int> >{{0, 0}, {1, 1}, {2, 2}};                \
          })                                                                                 \
      .set_attr<FCompute>("FCompute<cpu>", QuantizedReshapeCompute)                          \
      .set_attr<FResourceRequest>(                                                           \
          "FResourceRequest",                                                                \
          [](const NodeAttrs& n) {                                                           \
            return std::vector<ResourceRequest>{ResourceRequest::kTempSpace};                \
          })                                                                                 \
      .set_attr<nnvm::FInferType>("FInferType", QuantizedReshapeType)                        \
      .set_attr<nnvm::FGradient>("FGradient", MakeZeroGradNodes)                             \
      .set_attr<FQuantizable>("FQuantizable",                                                \
                              [](const NodeAttrs& attrs) { return QuantizeType::kSupport; }) \
      .add_argument("data", "NDArray-or-Symbol", "Array to be reshaped.")                    \
      .add_argument("min_data",                                                              \
                    "NDArray-or-Symbol",                                                     \
                    "The minimum scalar value "                                              \
                    "possibly produced for the data")                                        \
      .add_argument("max_data",                                                              \
                    "NDArray-or-Symbol",                                                     \
                    "The maximum scalar value "                                              \
                    "possibly produced for the data")

MXNET_OPERATOR_REGISTER_QUANTIZED_RESHAPE(_contrib_quantized_reshape)
    .add_alias("quantized_reshape")
    .set_attr_parser(ParamParser<ReshapeParam>)
    .set_attr<mxnet::FInferShape>("FInferShape", QuantizedReshapeInferShape<ReshapeShape>)
    .add_arguments(ReshapeParam::__FIELDS__());

MXNET_OPERATOR_REGISTER_QUANTIZED_RESHAPE(_npx_quantized_reshape)
    .set_attr_parser(ParamParser<NumpyXReshapeParam>)
    .set_attr<mxnet::FInferShape>("FInferShape", QuantizedReshapeInferShape<NumpyXReshapeShape>)
    .add_arguments(NumpyXReshapeParam::__FIELDS__());

enum ReshapeModule { NumPy = 0, NDArray = 1 };

inline const char* QuantizedReshapeModeMap(ReshapeModule module) {
  switch (module) {
    case ReshapeModule::NumPy:
      return "_npx_quantized_reshape";
    case ReshapeModule::NDArray:
      return "_contrib_quantized_reshape";
    default:
      LOG(ERROR) << "Invalid ReshapeModule was passed";
      return nullptr;
  }
}

template <ReshapeModule module>
nnvm::ObjectPtr QuantizedReshapeNode(const NodeAttrs& attrs) {
  nnvm::ObjectPtr node = nnvm::Node::Create();

  node->attrs.op   = Op::Get(QuantizedReshapeModeMap(module));
  node->attrs.name = "quantized_" + attrs.name;
  node->attrs.dict = attrs.dict;

  if (node->op() != nullptr && node->op()->attr_parser != nullptr) {
    node->op()->attr_parser(&(node->attrs));
  }
  return node;
}

NNVM_REGISTER_OP(_npx_reshape)
    .set_attr<FQuantizedOp>("FQuantizedOp", QuantizedReshapeNode<ReshapeModule::NumPy>);

NNVM_REGISTER_OP(Reshape).set_attr<FQuantizedOp>("FQuantizedOp",
                                                 QuantizedReshapeNode<ReshapeModule::NDArray>);

}  // namespace op
}  // namespace mxnet