常见问题¶

多进程多线程部署¶

用 uWSGI +Flask 多进程多线程部署 pytorch项目时报:

"Cannot re-initialize CUDA in forked subprocess. To use CUDA with "
RuntimeError: Cannot re-initialize CUDA in forked subprocess.
To use CUDA with multiprocessing, you must use the 'spawn' start method

解决方法:
    lazy=true

字符问题¶

简介¶

docker容器运行的服务
一个使用Flash的示例
使用uwsgi启动

现象¶

疑问1: 用curl命令请求时，如果参数带汉字，Flash使用 request.args.get('cmd') 提取时乱码

疑问2: 在代码中打印时用 print(f”cmd: {cmd}”)时，报错: UnicodeEncodeError: 'ascii' codec can't encode characters in position 65-68: ordinal not in range(128):

--- Logging error ---
Traceback (most recent call last):
  File "/opt/conda/lib/python3.10/logging/__init__.py", line 1103, in emit
    stream.write(msg + self.terminator)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 66-69: ordinal not in range(128)
Call stack:
  File "/opt/conda/lib/python3.10/site-packages/flask/app.py", line 2548, in __call__
    return self.wsgi_app(environ, start_response)
  File "/opt/conda/lib/python3.10/site-packages/flask/app.py", line 2525, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/conda/lib/python3.10/site-packages/flask/app.py", line 1820, in full_dispatch_request
    rv = self.dispatch_request()
  File "/opt/conda/lib/python3.10/site-packages/flask/app.py", line 1796, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
  File "/data/intend_llm/./intend/intend.py", line 33, in run
    log.debug(f"responds: {responds}")
Unable to print the message and arguments - possible formatting error.
Use the traceback above to help find the error.

奇怪的是不使用uwsgi，直接用python启动Flash，只有现象1，没有现象2（todo）

过程¶

最开始是第一个问题，chatgpt给我扯了一堆有的没的，各种试都没有用，后来放弃

后面代码运行时，结果都没有问题，但报上面这个错，也是各种扯，之后我想如果是编码问题，那是不是看看LANG等环境变量:

echo $LANG   => ""
echo $LC_ALL   => ""
echo $LANGUAGE   => ""

# 执行下local
$ locale
LANG=
LANGUAGE=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=

# POSIX does not support UTF-8 encoding.

解决¶

修改Dockfile:

FROM your_base_image

# Install locales package and set up locale
RUN apt-get update && apt-get install -y locales && \
    locale-gen en_US.UTF-8 && \
    update-locale LANG=en_US.UTF-8

ENV LANG=en_US.UTF-8
ENV LC_ALL=en_US.UTF-8