tensorflow serving 编写配置文件platform_config_file的方法

1、安装grpc

gRPC 的安装：

$ pip install grpcio

安装 ProtoBuf 相关的 python 依赖库：

$ pip install protobuf

安装 python grpc 的 protobuf 编译工具：

$ pip install grpcio-tools

2、在serving目录运行脚本，生成*_pb2.py文件

 1 # run at root of tensorflow_serving repo
 2 
 3 TARGET_DIR="$1"
 4 
 5 python -m grpc.tools.protoc \
 6     -I . -I ./tensorflow \
 7     --python_out "$TARGET_DIR" \
 8     tensorflow_serving/servables/tensorflow/saved_model_bundle_source_adapter.proto \
 9     tensorflow_serving/servables/tensorflow/session_bundle_config.proto \
10     tensorflow_serving/config/platform_config.proto
11 
12 pushd $TARGET_DIR
13 
14 touch tensorflow_serving/__init__.py
15 touch tensorflow_serving/config/__init__.py
16 touch tensorflow_serving/servables/__init__.py
17 touch tensorflow_serving/servables/tensorflow/__init__.py
18 
19 popd

sh gen-tf-serving-proto-py.sh /tmp

3、将生成的*_pb2.py文件cp出来

cp -r /tmp/tensorflow_serving .

4、在当前目录运行gen-platform-config.py

 1 # -*- coding: utf-8 -*-
 2 
 3 
 4 import tensorflow as tf
 5 
 6 from tensorflow_serving.config import platform_config_pb2
 7 from tensorflow_serving.servables.tensorflow import session_bundle_config_pb2
 8 from tensorflow_serving.servables.tensorflow import saved_model_bundle_source_adapter_pb2
 9 
10 
11 session_config = tf.ConfigProto()
12 # config whatever you want
13 session_config.gpu_options.allow_growth = True
14 session_config.gpu_options.per_process_gpu_memory_fraction = 0.4
15 
16 legacy_config=session_bundle_config_pb2.SessionBundleConfig(session_config=session_config)
17 adapter = saved_model_bundle_source_adapter_pb2.SavedModelBundleSourceAdapterConfig(legacy_config=legacy_config)
18 
19 config_map = platform_config_pb2.PlatformConfigMap()
20 config_map.platform_configs['tensorflow'].source_adapter_config.Pack(adapter)
21 
22 print(config_map)

5、生成platform_config_file.cfg文件

 1 platform_configs {
 2   key: "tensorflow"
 3   value {
 4     source_adapter_config {
 5       [type.googleapis.com/tensorflow.serving.SavedModelBundleSourceAdapterConfig] {
 6         legacy_config {
 7           session_config {
 8             gpu_options {
 9               per_process_gpu_memory_fraction: 0.4
10               allow_growth: true
11             }
12           }
13         }
14       }
15     }
16   }
17 }

6、运行tf_serving时添加参数--platform_config_file=./conf/platform_config_file.cfg

7、若同时需要配置batching_parameters_file，则需要将batching参数写入到platform_config_file.cfg内

 1 platform_configs {
 2   key: "tensorflow"
 3   value {
 4     source_adapter_config {
 5       [type.googleapis.com/tensorflow.serving.SavedModelBundleSourceAdapterConfig] {
 6         legacy_config {
 7       batching_parameters {
 8         max_batch_size { value: 1000000 }
 9         batch_timeout_micros { value: 200000000 }
10         max_enqueued_batches { value: 1000000 }
11         num_batch_threads { value: 36 }  
12           }
13           session_config {
14             allow_soft_placement: true
15             gpu_options {
16               per_process_gpu_memory_fraction: 0.4
17               allow_growth: true
18             }
19           }
20         }
21       }
22     }
23   }
24 }

详细信息参照：https://github.com/tensorflow/serving/issues/342

我运行后生成的cfg文件为

1 platform_configs {
2   key: "tensorflow"
3   value {
4     source_adapter_config {
5       type_url: "type.googleapis.com/tensorflow.serving.SavedModelBundleSourceAdapterConfig"
6       value: "\302>\017\022\r2\013\t\232\231\231\231\231\231\331? \001"
7     }
8   }
9 }

并不能生成清晰的text格式的配置文件，目前还未找到原因