# Multiprocessing in LAPACK is gone

**URL:** https://discourse.julialang.org/t/multiprocessing-in-lapack-is-gone/10448
**Category:** Performance
**Tags:** lapack
**Created:** [April 20, 2018, 2:50am UTC](https://discourse.julialang.org/t/multiprocessing-in-lapack-is-gone/10448 "2018-04-20T02:50:07Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Lian\_Yunlong](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/lian_yunlong/32/14437_2.png) [@Lian\_Yunlong](https://discourse.julialang.org/u/Lian_Yunlong)
#### Post date: [April 20, 2018, 2:50am UTC](https://discourse.julialang.org/t/multiprocessing-in-lapack-is-gone/10448/1 "2018-04-20T02:50:07Z")

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Hello everyone,  
I had built my own Julia excutable because I need to install CUDAdrv. But I was probably not aware of the multiprocessing options. Now when I call eigfact(), there is always only one core running, but on my computer I have 8 available.

How can I enforce lapack to exploit all available cores? How to check the multiprocessing functionality in my own build of Julia?