# Arpack and MKL

**URL:** https://discourse.julialang.org/t/arpack-and-mkl/50291
**Category:** Numerics
**Tags:** question
**Created:** [November 17, 2020, 11:34am UTC](https://discourse.julialang.org/t/arpack-and-mkl/50291 "2020-11-17T11:34:39Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Jonas](https://avatars.discourse-cdn.com/v4/letter/j/aeb1de/32.png) [@Jonas](https://discourse.julialang.org/u/Jonas)
#### Post date: [November 17, 2020, 11:34am UTC](https://discourse.julialang.org/t/arpack-and-mkl/50291/1 "2020-11-17T11:34:39Z")

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Hello everyone,

I wrote some code to calculate the first n eigenvalues and eigenvectors of a generalized eigenvalue problem over a two-dimensional mesh. For this I used the function eigs() of the package Arpack. Since the rest of my code is very dependent on matrix multiplications, I tried the package MKL.jl this week but now eigs() somehow doesn’t work anymore and I get this error:  
ERROR: LoadError: ARPACKException: unspecified ARPACK error: -10.  
Is there any solution to get Arpack working with MKL?

Best regards,  
Jonas

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### Author: ![andreasnoack](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/andreasnoack/32/27_2.png) [@andreasnoack](https://discourse.julialang.org/u/andreasnoack)
#### Post date: [November 18, 2020, 9:07am UTC](https://discourse.julialang.org/t/arpack-and-mkl/50291/2 "2020-11-18T09:07:20Z")

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There is [https://github.com/JuliaLinearAlgebra/ArpackMKL.jl](https://github.com/JuliaLinearAlgebra/ArpackMKL.jl) for this reason but I don’t know the current status of the package.