# OpenMx on ARM CPU

**URL:** <https://isgw-forum.colorado.edu/t/openmx-on-arm-cpu/375>\
**Category:** Day 1\
**Tags:** r, openmx\
**Created:** [June 29, 2022, 7:39am UTC](https://isgw-forum.colorado.edu/t/openmx-on-arm-cpu/375 "2022-06-29T07:39:19Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Giaco](https://isgw-forum.colorado.edu/letter_avatar_proxy/v4/letter/g/a3d4f5/32.png) [@Giaco](https://isgw-forum.colorado.edu/u/Giaco)\
**Post date:** [June 29, 2022, 7:39am UTC](https://isgw-forum.colorado.edu/t/openmx-on-arm-cpu/375/1 "2022-06-29T07:39:19Z")

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Hi all,

quick question on using OpenMx on ARM CPU: which optimizer do you recommend to use, since NPSOL is not supported on such architecture [Installing OpenMx | OpenMx](https://openmx.ssri.psu.edu/installing-openmx) ?

Will try to tag @michael.neale, but please let me know if I should have tagged someone else.

Many thanks!  
Best,  
Giaco

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**Author:** ![michael-hunter](https://isgw-forum.colorado.edu/letter_avatar_proxy/v4/letter/m/ac91a4/32.png) [@michael-hunter](https://isgw-forum.colorado.edu/u/michael-hunter)\
**Post date:** [July 1, 2022, 4:13pm UTC](https://isgw-forum.colorado.edu/t/openmx-on-arm-cpu/375/2 "2022-07-01T16:13:28Z")

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Hi Giaco,

In theory it shouldn’t matter much which optimizer you use. Personally, I’d leave the optimizer at its onload default: SLSQP.

Cheers,  
Mike Hunter

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**Author:** ![Giaco](https://isgw-forum.colorado.edu/letter_avatar_proxy/v4/letter/g/a3d4f5/32.png) [@Giaco](https://isgw-forum.colorado.edu/u/Giaco)\
**Post date:** [July 3, 2022, 4:45pm UTC](https://isgw-forum.colorado.edu/t/openmx-on-arm-cpu/375/3 "2022-07-03T16:45:26Z")

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Hi Mike,

Many thanks!

Best,  
Giaco