/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.

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. */

syntax = "proto2";
option optimize_for = LITE_RUNTIME;
import "data_feed.proto";
import "framework.proto";
package paddle.framework;

message TrainerDesc {
  // class name for create trainer desc
  // the matchness of trainer name and device worker name
  // will be checked in python API
  optional string class_name = 1;
  // class name for creating device worker
  optional string device_worker_name = 2;
  // thread number
  optional int32 thread_num = 3;
  // if we need to binding cpu
  optional bool binding_cpu = 4 [ default = false ];
  repeated string filelist = 5;
  optional bool debug = 6 [ default = false ];
  optional FetchConfig fetch_config = 7;
  optional bool use_cvm = 8 [ default = false ];
  optional bool dump_slot = 9 [ default = false ];
  optional float scale_datanorm = 10 [ default = -1 ];
  optional int32 mpi_rank = 11 [ default = -1 ];
  optional string dump_fields_path = 12;
  repeated string dump_fields = 13;
  optional string dump_converter = 14;
  repeated string dump_param = 15;
  optional int32 mpi_size = 16 [ default = -1 ];
  optional int32 dump_file_num = 17 [ default = 16 ];
  repeated string check_nan_var_names = 18;
  optional CopyTableConfig copy_table_config = 19;
  // adjust ins weight
  optional AdjustInsWeightConfig adjust_ins_weight_config = 20;
  optional bool no_cvm = 21 [ default = false ];
  optional bool thread_barrier = 22;
  repeated string loss_names = 23;

  // device worker parameters
  optional HogwildWorkerParameter hogwild_param = 101;
  optional DownpourWorkerParameter downpour_param = 103;
  optional PullDenseWorkerParameter pull_dense_param = 102;
  optional SectionWorkerParameter section_param = 104;
  // datafeed desc
  optional DataFeedDesc data_desc = 201;
}

message HogwildWorkerParameter {
  repeated string skip_ops = 1;
  repeated string stat_var_names = 2;
}

message DownpourWorkerParameter {
  repeated TableParameter sparse_table = 1;
  repeated TableParameter dense_table = 2;
  repeated string skip_ops = 3;
  repeated ProgramConfig program_config = 4;
  optional bool push_sparse = 5 [ default = true ];
  optional bool push_dense = 6 [ default = true ];
  repeated string stat_var_names = 7;
}

message SectionWorkerParameter {
  repeated SectionConfig section_config = 1;
  optional int32 queue_size = 2 [ default = 1 ];
  optional int64 sync_steps = 3 [ default = 1 ];
  optional int32 start_cpu_core_id = 4 [ default = 1 ];
  repeated string param_need_sync = 5;
}

message SectionConfig {
  enum Place {
    CPUPlace = 0;
    CUDAPlace = 1;
    CUDAPinnedPlace = 2;
  }

  // FIXME: How to use proto::ProgramDesc
  // required string program_desc_str = 1;
  optional proto.ProgramDesc program_desc = 1;
  optional Place place = 2;
  optional int32 concurrency = 3 [ default = 1 ];
  repeated string section_in_var_names = 4;
  repeated string section_out_var_names = 5;
}

message FetchConfig {
  enum Method { PRINT = 0; }
  repeated string fetch_var_names = 1;
  repeated string fetch_var_str_format = 2;
  optional int32 print_period = 3 [ default = 100 ];
  optional Method method = 4 [ default = PRINT ];
}

message AdjustInsWeightConfig {
  optional bool need_adjust = 1 [ default = false ];
  optional string nid_slot = 2 [ default = "" ];
  optional float nid_adjw_threshold = 3 [ default = 0.0 ];
  optional float nid_adjw_ratio = 4 [ default = 0.0 ];
  optional string ins_weight_slot = 5 [ default = "" ];
}

message TableDependencyMap {
  required int32 key = 1;
  repeated int32 values = 2;
}

message CopyTableConfig {
  optional bool need_copy = 1 [ default = false ];
  optional int32 batch_num = 2 [ default = 100 ];
  repeated int32 src_sparse_tables = 3;
  repeated int32 dest_sparse_tables = 4;
  repeated int32 src_dense_tables = 5;
  repeated int32 dest_dense_tables = 6;
  repeated string src_var_list = 7;
  repeated string dest_var_list = 8;
  // when dest dense table has no grad, should pull explicitly
  optional bool dense_pull_after_copy = 9 [ default = false ];
  // copy feasigns or copy the whole table
  optional bool sparse_copy_by_feasign = 10 [ default = true ];
  // table dependency for pull/push
  optional bool enable_dependency = 11 [ default = false ];
  repeated TableDependencyMap table_denpendency_map = 12;
}

message ProgramConfig {
  required string program_id = 1;
  repeated int32 push_sparse_table_id = 2;
  repeated int32 push_dense_table_id = 3;
  repeated int32 pull_sparse_table_id = 4;
  repeated int32 pull_dense_table_id = 5;
}

message PullDenseWorkerParameter {
  // dense table only and specialized usage
  optional int32 threshold = 1 [ default = 1 ];
  optional int32 device_num = 2;
  optional int32 sleep_time_ms = 3 [ default = 2 ];
  repeated TableParameter dense_table = 4;
}

message TableParameter {
  // dense table only
  optional uint64 table_id = 1;
  repeated string dense_value_name = 2;
  repeated string dense_grad_name = 3;
  repeated int32 push_dense_wait_times = 5;
  // sparse table only
  repeated string sparse_key_name = 6;
  repeated string sparse_value_name = 7;
  repeated string sparse_grad_name = 8;
  repeated int32 push_sparse_wait_times = 9;
  // sparse table only and specialized usage
  optional int32 emb_dim = 10;
  optional int32 fea_dim = 11;
  optional string label_var_name = 12;
  // if table will pull sparse to local first
  optional bool is_local = 13 [ default = false ];
  // if table will pull sparse asynchronously in worker
  optional bool is_async = 14 [ default = false ];
  optional string async_wait_op_name = 15;
}