mirror of
https://github.com/PaddlePaddle/FastDeploy.git
synced 2025-10-05 16:48:03 +08:00
02eab973ce
* 第一次提交 * 补充一处漏翻译 * deleted: docs/en/quantize.md * Update one translation * Update en version * Update one translation in code * Standardize one writing * Standardize one writing * Update some en version * Fix a grammer problem * Update en version for api/vision result * Merge branch 'develop' of https://github.com/charl-u/FastDeploy into develop * Checkout the link in README in vision_results/ to the en documents * Modify a title * Add link to serving/docs/ * Finish translation of demo.md
55 lines
1.5 KiB
Markdown
55 lines
1.5 KiB
Markdown
[English](../../../en/quick_start/runtime/python.md) | 中文
|
||
|
||
# Python推理
|
||
|
||
确认开发环境已安装FastDeploy，参考[FastDeploy安装](../../build_and_install/)安装预编译的FastDeploy，或根据自己需求进行编译安装。
|
||
|
||
本文档以 PaddleClas 分类模型 MobileNetV2 为例展示CPU上的推理示例
|
||
|
||
## 1. 获取模型
|
||
|
||
``` python
|
||
import fastdeploy as fd
|
||
|
||
model_url = "https://bj.bcebos.com/fastdeploy/models/mobilenetv2.tgz"
|
||
fd.download_and_decompress(model_url, path=".")
|
||
```
|
||
|
||
## 2. 配置后端
|
||
|
||
- 更多后端的示例可参考[examples/runtime](https://github.com/PaddlePaddle/FastDeploy/tree/develop/examples/runtime)
|
||
|
||
``` python
|
||
option = fd.RuntimeOption()
|
||
|
||
option.set_model_path("mobilenetv2/inference.pdmodel",
|
||
"mobilenetv2/inference.pdiparams")
|
||
|
||
# **** CPU 配置 ****
|
||
option.use_cpu()
|
||
option.use_ort_backend()
|
||
option.set_cpu_thread_num(12)
|
||
|
||
# 初始化构造runtime
|
||
runtime = fd.Runtime(option)
|
||
|
||
# 获取模型输入名
|
||
input_name = runtime.get_input_info(0).name
|
||
|
||
# 构造随机数据进行推理
|
||
results = runtime.infer({
|
||
input_name: np.random.rand(1, 3, 224, 224).astype("float32")
|
||
})
|
||
|
||
print(results[0].shape)
|
||
```
|
||
加载完成，会输出提示如下，说明初始化的后端，以及运行的硬件设备
|
||
```
|
||
[INFO] fastdeploy/fastdeploy_runtime.cc(283)::Init Runtime initialized with Backend::OrtBackend in device Device::CPU.
|
||
```
|
||
|
||
## 其它文档
|
||
|
||
- [不同后端Runtime demo示例](../../../../examples/runtime/README.md)
|
||
- [切换模型推理的硬件和后端](../../faq/how_to_change_backend.md)
|