FAQ

Q1: Import packages warning

A1

Regarding import linlink, ceph, memcache, redis related warnings displayed on the command line when running DI-engine, generally users can ignore it, and DI-engine will automatically search for corresponding alternative libraries or code implementations during import.

Q2: Cannot use DI-engine command line tool (CLI) after installation

A2

• pip with -e flag might sometimes make CLI not available. Generally, non-developers do not need to install with -e flag, removing the flag and reinstall is sufficient.

• Part of the operating environment will install the CLI in the user directory, you need to verify whether the CLI installation directory is in the user’s environment variable (such as $PATH in Linux).

Q3: “No permission” error occurred during installation

A3

Due to the lack of corresponding permissions in some operating environments, “Permission denied” may appear during pip installation. The specific reasons and solutions are as follows:

• pip with --user flag and install in user’s directory

• Move the .git folder in the root directory out, execute the pip installation command, and then move it back. For specific reasons, see https://github.com/pypa/pip/issues/4525

Q4: How to set the relevant operating parameters of SyncSubprocessEnvManager

A4

Add manager field to the env field in cfg file, you can specify whether to use shared_memory as well as the context of multiprocessing launch. The following code provides a simple example. For detailed parameter information, please refer to SyncSubprocessEnvManager.

config = dict(
    env=dict(
        manager=dict(shared_memory=False)
    )
)