9. 启用内存优化¶
API定义如下：
# 开启内存 / 显存复用，具体降低内存效果取决于模型结构
# 参数：None
# 返回：None
paddle.inference.Config.enable_memory_optim()
代码示例：
# 引用 paddle inference 预测库
import paddle.inference as paddle_infer
# 创建 config
config = paddle_infer.Config("./mobilenet_v1.pdmodel", "./mobilenet_v1.pdiparams")
# 开启 CPU 显存优化
config.enable_memory_optim()
# 启用 GPU 进行预测
config.enable_use_gpu(100, 0)
# 开启 GPU 显存优化
config.enable_memory_optim()
10. 设置缓存路径¶
注意： 如果当前使用的为 TensorRT INT8 且设置从内存中加载模型，则必须通过 set_optim_cache_dir 来设置缓存路径。
API定义如下：
# 设置缓存路径
# 参数：opt_cache_dir - 缓存路径
# 返回：None
paddle.inference.Config.set_optim_cache_dir(opt_cache_dir: str)
代码示例：
# 引用 paddle inference 预测库
import paddle.inference as paddle_infer
# 创建 config
config = paddle_infer.Config("./mobilenet_v1.pdmodel", "./mobilenet_v1.pdiparams")
# 设置缓存路径
config.set_optim_cache_dir("./OptimCacheDir")
11. Profile 设置¶
API定义如下：
# 打开 Profile，运行结束后会打印所有 OP 的耗时占比
# 参数：None
# 返回：None
paddle.inference.Config.enable_profile()
代码示例：
# 引用 paddle inference 预测库
import paddle.inference as paddle_infer
# 创建 config
config = paddle_infer.Config("./mobilenet_v1.pdmodel", "./mobilenet_v1.pdiparams")
# 打开 Profile
config.enable_profile()
执行预测之后输出的 Profile 的结果如下：
-------------------------> Profiling Report <-------------------------
Place: CPU
Time unit: ms
Sorted by total time in descending order in the same thread
------------------------- Overhead Summary -------------------------
Total time: 1085.33
Computation time Total: 1066.24 Ratio: 98.2411%
Framework overhead Total: 19.0902 Ratio: 1.75893%
------------------------- GpuMemCpy Summary -------------------------
GpuMemcpy Calls: 0 Total: 0 Ratio: 0%
------------------------- Event Summary -------------------------
Event Calls Total Min. Max. Ave. Ratio.
thread0::conv2d 210 319.734 0.815591 6.51648 1.52254 0.294595
thread0::load 137 284.596 0.114216 258.715 2.07735 0.26222
thread0::depthwise_conv2d 195 266.241 0.955945 2.47858 1.36534 0.245308
thread0::elementwise_add 210 122.969 0.133106 2.15806 0.585568 0.113301
thread0::relu 405 56.1807 0.021081 0.585079 0.138718 0.0517635
thread0::batch_norm 195 25.8073 0.044304 0.33896 0.132345 0.0237783
thread0::fc 15 7.13856 0.451674 0.714895 0.475904 0.0065773
thread0::pool2d 15 1.48296 0.09054 0.145702 0.0988637 0.00136636
thread0::softmax 15 0.941837 0.032175 0.460156 0.0627891 0.000867786
thread0::scale 15 0.240771 0.013394 0.030727 0.0160514 0.000221841
12. Log 设置¶
API定义如下：
# 去除 Paddle Inference 运行中的 LOG
# 参数：None
# 返回：None
paddle.inference.Config.disable_glog_info()
# 判断是否禁用 LOG
# 参数：None
# 返回：bool - 是否禁用 LOG
paddle.inference.Config.glog_info_disabled()
代码示例：
# 引用 paddle inference 预测库
import paddle.inference as paddle_infer
# 创建 config
config = paddle_infer.Config("./mobilenet_v1.pdmodel", "./mobilenet_v1.pdiparams")
# 去除 Paddle Inference 运行中的 LOG
config.disable_glog_info()
# 判断是否禁用 LOG - true
print("GLOG INFO is: {}".format(config.glog_info_disabled()))
13. 查看config配置¶
API定义如下：
# 返回 config 的配置信息
# 参数：None
# 返回：string - config 配置信息
paddle.inference.Config.summary()
调用summary()的输出如下所示：
+-------------------------------+----------------------------------+
| Option | Value |
+-------------------------------+----------------------------------+
| model_dir | ./inference_pass/TRTFlattenTest/ |
+-------------------------------+----------------------------------+
| cpu_math_thread | 1 |
| enable_mkldnn | false |
| mkldnn_cache_capacity | 10 |
+-------------------------------+----------------------------------+
| use_gpu | true |
| gpu_device_id | 0 |
| memory_pool_init_size | 100MB |
| thread_local_stream | false |
| use_tensorrt | true |
| tensorrt_precision_mode | fp32 |
| tensorrt_workspace_size | 1073741824 |
| tensorrt_max_batch_size | 32 |
| tensorrt_min_subgraph_size | 0 |
| tensorrt_use_static_engine | false |
| tensorrt_use_calib_mode | false |
| tensorrt_enable_dynamic_shape | false |
| tensorrt_use_oss | true |
| tensorrt_use_dla | false |
+-------------------------------+----------------------------------+
| use_xpu | false |
+-------------------------------+----------------------------------+
| ir_optim | true |
| ir_debug | false |
| memory_optim | false |
| enable_profile | false |
| enable_log | true |
+-------------------------------+----------------------------------+