# Julia 1.3, 1.4 on MacOS and Intel MKL Error

**URL:** <https://discourse.julialang.org/t/julia-1-3-1-4-on-macos-and-intel-mkl-error/36469>\
**Category:** Internals & Design\
**Created:** [March 24, 2020, 10:44pm UTC](https://discourse.julialang.org/t/julia-1-3-1-4-on-macos-and-intel-mkl-error/36469 "2020-03-24T22:44:09Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![wolfgang](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/wolfgang/32/13053_2.png) [@wolfgang](https://discourse.julialang.org/u/wolfgang)\
**Post date:** [March 25, 2020, 11:31am UTC](https://discourse.julialang.org/t/julia-1-3-1-4-on-macos-and-intel-mkl-error/36469/5 "2020-03-25T11:31:05Z")

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From

> [@Call Intel MKL as external library](https://discourse.julialang.org/t/call-intel-mkl-as-external-library/2097):
>
> I wrote a script to test a call to Intel MKL a external library but it doesn’t work. The concept: Solve a linear system using MKL “dgetrs” ([Documentation Library](https://software.intel.com/en-us/node/520892)) # Test MKL solve linear systems N = 10; A = rand(N,N); AA = copy(A); b = rand(N,1); c = copy(b); function juliaSol(A,b) \(A,b); end sol = sol = juliaSol(A,b); #Solution of the linear system # Test MKL const global librt = Libdl.find\_library(["libmkl\_rt"], ["/opt/intel/mkl/lib"]) # Open librt Libdl.dlopen(librt) # 101 = LAPAC…

one can assume, that between your tested releases LU factorisation somehow has a problem. The above mentioned discourse article from @Tecnezio references into the Intel documentation:

[https://software.intel.com/en-us/node/520892](https://software.intel.com/en-us/node/520892)

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