[gmx-users] "C compiler accepts -mavx512f... no" (error compiling)

[Justin Lemkul]

On 11/6/16 3:11 PM, Jacob Nowatzke wrote:
> I've installed GROMACS 2016.1 on my laptop and it works splendidly. When I
> install on my desktop, however, it does not.
> On the desktop I use:
>> cmake .. -DGMX_BUILD_OWN_FFTW=ON -DREGRESSIONTEST_DOWNLOAD=ON -DGMX_GPU=ON
> -DGMX_USE_OPENCL=ON When I make check, it stops short and gives:
>
> checking whether C compiler accepts -mavx512f... no
> configure: error: Need a version of gcc with -mavx512f
> make[2]: ***
> [src/contrib/fftw/fftwBuild-prefix/src/fftwBuild-stamp/fftwBuild-configure]
> Error 1
> make[1]: *** [src/contrib/fftw/CMakeFiles/fftwBuild.dir/all] Error 2
> make: *** [all] Error 2
>
> I've searched enough to not be able to find this mavx512 business anywhere,
> using various keywords. From where might this issue be stemming?
>

Looks like cmake has detected that your architecture supports AVX512 
optimization but your gcc is outdated and doesn't support it.  What version of 
gcc do you have?

-Justin

-- 
==================================================

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalemkul at outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

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