# How do you speed up the linear sparse solver in Zygote?

**URL:** <https://discourse.julialang.org/t/how-do-you-speed-up-the-linear-sparse-solver-in-zygote/111801>\
**Category:** Numerics\
**Tags:** question, zygote, linearsolve, sparsearrays\
**Created:** [March 19, 2024, 7:15am UTC](https://discourse.julialang.org/t/how-do-you-speed-up-the-linear-sparse-solver-in-zygote/111801 "2024-03-19T07:15:50Z")\
**Posts on this page:** 1\
**Showing post:** 26

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**Author:** ![mohamed82008](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mohamed82008/32/18171_2.png) [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Post date:** [March 21, 2024, 1:37pm UTC](https://discourse.julialang.org/t/how-do-you-speed-up-the-linear-sparse-solver-in-zygote/111801/26 "2024-03-21T13:37:00Z")

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> [@stevengj](#):
>
> It’s not that this can’t be done — I pointed out the required implicit representation in one common case in my post, and @mohamed82008 gave some example code.

For reference, [Zygote.jl: How to get the gradient of sparse matrix - #12 by mohamed82008](https://discourse.julialang.org/t/zygote-jl-how-to-get-the-gradient-of-sparse-matrix/59067/12)

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