# MATLAB is faster for my large system of ODEs?

**URL:** <https://discourse.julialang.org/t/matlab-is-faster-for-my-large-system-of-odes/122610>\
**Category:** Numerics\
**Tags:** matlab, ode, speed-optimization, solver\
**Created:** [November 13, 2024, 11:06pm UTC](https://discourse.julialang.org/t/matlab-is-faster-for-my-large-system-of-odes/122610 "2024-11-13T23:06:02Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![Palli](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/palli/32/3380_2.png) [@Palli](https://discourse.julialang.org/u/Palli)\
**Post date:** [November 15, 2024, 11:00am UTC](https://discourse.julialang.org/t/matlab-is-faster-for-my-large-system-of-odes/122610/21 "2024-11-15T11:00:29Z")

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> [@zdenek\_hurak](#):
>
> unable to find any description of the function `exp!` – neither in the [online documentation](https://docs.julialang.org/en/v1/), nor through the `?` help in REPL.

> help?\> LinearAlgebra.exp!  
> │ Warning  
> │  
> │ The following bindings may be internal; they may change or be removed in future versions:  
> │  
> │ • LinearAlgebra.exp!

Should be made public?

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**Author:** ![apo383](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/apo383/32/11272_2.png) [@apo383](https://discourse.julialang.org/u/apo383)\
**Post date:** [November 15, 2024, 6:12pm UTC](https://discourse.julialang.org/t/matlab-is-faster-for-my-large-system-of-odes/122610/22 "2024-11-15T18:12:50Z")

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> [@Palli](#):
>
> Should be made public?

Yes, the in-place version is nice to have. The devs may have their reasons for not exporting it, but there’s also `ExponentialUtilities.jl` with multiple `exponential!` algorithms including Higham (2008).

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