What is the use of Custom Julia system image and how to use it in Julia

This recipe explains what is the use of Custom Julia system image and how to use it

Recipe Objective

This recipe explains what is the use of custom system images and how to use it in julia.

Custom Julia system image

We use the Custom Julia system image because it helps to reduce the startup time of some complex julia packages. In addition, we can use it around the problem in statically linked Python.
To compile a Custom Julia system image we have to run a command:
$ python3 -m julia.sysimage sys.so
For windows we can change sys.dll instead of sys.so
For macOS, we can change sys.dylib instead of sys.so
To use system image with PyJulia we have to specify its path using the sysimage keyword argument of the Julia constructor.

from julia import Base
from julia import Julia
ex = Julia(sysimage="sys_img.so")
Base.julia_cmd()

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