conda/pip 安装中 *=*gpu 是什么意思？

Question

What's means of *=*gpu in conda/pip install ?

See below:

conda install deepmd-kit=*=*gpu lammps-dp=*=*gpu

Answer 1

The syntax allows you specify the version and build type of the package.

conda install <package name>=<version filter>=<build filter>

For your case, it installing any version of deepmd-kit and lammps-dp that are built for GPU.

Here are some other examples:

1. install any version of deepmd-kit compatible with the environment:

conda install deepmd-kit

2. install major release 1, any compatible minor release

conda install deepmd-kit=1.*

3. install major release 1, minor release 2, any subversion

conda install deepmd-kit=1.2.*

4. install major exactly version 1.2.1

conda install deepmd-kit=1.2.1

Adding an additional equal syntax filters by the build string.

5. install major release 1, any compatible minor release, built for python 3.8

conda install deepmd-kit=1.*=py38*

6. install major release 1, any compatible minor release, built for GPU

conda install deepmd-kit=1.*=*gpu

7. install major release 1, any compatible minor release, built for python 3.8 and GPU

conda install deepmd-kit=1.*=py38*gpu