# Optim.jl vs scipy.optimize once again

**URL:** <https://discourse.julialang.org/t/optim-jl-vs-scipy-optimize-once-again/61661>\
**Category:** Performance\
**Tags:** optim\
**Created:** [May 23, 2021, 2:15am UTC](https://discourse.julialang.org/t/optim-jl-vs-scipy-optimize-once-again/61661 "2021-05-23T02:15:11Z")\
**Posts on this page:** 1\
**Showing post:** 46

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**Author:** ![lmiq](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lmiq/32/18314_2.png) [@lmiq](https://discourse.julialang.org/u/lmiq)\
**Post date:** [May 26, 2021, 3:03pm UTC](https://discourse.julialang.org/t/optim-jl-vs-scipy-optimize-once-again/61661/46 "2021-05-26T15:03:38Z")

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One of the spg [original developers](https://www.ime.usp.br/~egbirgin/) just told me: “You could have told him that in principle the behavior of SPG and L-BFGS-B, should be very similar, something we have demonstrated [in this paper](https://www.ime.usp.br/~egbirgin/publications/bg-bdseval.pdf). Of course for particular problems that has to be tested.”

Just reinforcing that we should not expect such a huge difference between the methods, in general.

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