/**
 * 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.
 */

package singa;

option java_package = "org.apache.singa.proto";

// TODO(wangwei) check protobuf version to include the syntax
//syntax = "proto2";

enum DataType {
  kFloat32 = 0;
  kFloat16 = 1;
  kInt = 2;
  kChar = 3;
  kDouble = 4;
  kUChar = 5;
  kNumDataType = 6;
}

enum LangType {
  kCpp = 0;
  kCuda = 1;
  kOpencl = 2;
  kNumDeviceType = 4;
}

enum CopyDirection {
  kHostToHost = 0;
  kHostToDevice = 1;
  kDeviceToHost = 2;
  kDeviceToDevice = 3;
  kNumDirection = 4;
}

// configuration for device memory pool
message MemPoolConf {
  optional string type = 1 [default = "cnmem"];
  // allocation size for each device, default is 256 MB
  optional uint32 init_size = 2 [default = 256];
  // size limit in MB; report error/warning if this limit is reached.
  // 0 for unlimited memory, i.e., use as much memory as the device has
  // not used currently.
  optional uint32 max_size = 3 [default = 0];

  // memory manager flag for cnmem
  // flag = 0: default flag
  // flag = 1: prevent the manager from growing its memory consumption
  // flag = 2: prevent the manager from stealing memory
  optional uint32 flag = 11 [default = 0];
  repeated uint32 device = 12;
}

// For tensor serialization
message TensorProto {
  repeated uint32 shape = 1;
  optional DataType data_type = 2;
  //optional bool transpose = 3;
  repeated int32 stride = 3;
  repeated float float_data = 4 [packed = true];
  repeated double double_data = 5 [packed = true];
  repeated int32 int_data = 6 [packed = true];
  repeated bytes bytes_data = 7;
}