# Is there documentation on how to use MKL with libblastrampoline

**URL:** <https://discourse.julialang.org/t/is-there-documentation-on-how-to-use-mkl-with-libblastrampoline/56108>\
**Category:** Performance\
**Tags:** blas\
**Created:** [February 26, 2021, 6:17pm UTC](https://discourse.julialang.org/t/is-there-documentation-on-how-to-use-mkl-with-libblastrampoline/56108 "2021-02-26T18:17:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dmbates](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dmbates/32/44_2.png) [@dmbates](https://discourse.julialang.org/u/dmbates)\
**Post date:** [February 26, 2021, 6:17pm UTC](https://discourse.julialang.org/t/is-there-documentation-on-how-to-use-mkl-with-libblastrampoline/56108/1 "2021-02-26T18:17:25Z")

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Now that [https://github.com/JuliaLang/julia/pull/39455](https://github.com/JuliaLang/julia/pull/39455) has been merged, is there documentation on how to use MKL blas via libblastrampoline?

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**Author:** ![carstenbauer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carstenbauer/32/4981_2.png) [@carstenbauer](https://discourse.julialang.org/u/carstenbauer)\
**Post date:** [February 26, 2021, 6:20pm UTC](https://discourse.julialang.org/t/is-there-documentation-on-how-to-use-mkl-with-libblastrampoline/56108/2 "2021-02-26T18:20:28Z")

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I don’t think so. Note that it has only been merged a a few hours ago. However, you can check out [[Do not merge] Use the new LBT mechanism introduced in Julia to forward to MKL by ViralBShah · Pull Request #62 · JuliaLinearAlgebra/MKL.jl · GitHub](https://github.com/JuliaLinearAlgebra/MKL.jl/pull/62). AFAIU, eventually MKL.jl will do the job for you.

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**Author:** ![carstenbauer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carstenbauer/32/4981_2.png) [@carstenbauer](https://discourse.julialang.org/u/carstenbauer)\
**Post date:** [February 28, 2021, 8:48am UTC](https://discourse.julialang.org/t/is-there-documentation-on-how-to-use-mkl-with-libblastrampoline/56108/3 "2021-02-28T08:48:37Z")

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Just to keep you up to date, you might want to try [Run on Julia 1.5 (by building sysimg) and 1.7 (with LBT) in the same codebase by ViralBShah · Pull Request #63 · JuliaLinearAlgebra/MKL.jl · GitHub](https://github.com/JuliaLinearAlgebra/MKL.jl/pull/63), i.e. use Julia#master in combination with MKL#lbt2. Overall seems to works great! 🙂