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Improve juliacall startup time? #762

@zengmao

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@zengmao

Currently, it takes more than 2 seconds to load the package juliacall in Python, before importing any Julia package or running Julia code:

$ time python -c "from juliacall import Main as jl"

real	0m2.355s
user	0m3.104s
sys	0m0.156s

This can be a disadvantage compared with calling C++ instead of Julia to offload heavy computations outside Python, depending on the workflow. Is there a way to compile a Julia system image to make the startup much faster?

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