A quick update. FFTW is supposed to create fat binaries and ignore the AVX
that it cannot use. Regardless, this did not happen the right way. I've
modified the src/contrib/fftw/CMakeFiles/fftwBuild.dir/build.make and
removed the --enable- "512avx" and other terms and this removed the issue.
Dear Gromacsers,
After compiling gromacs successfully with SSE4.1 it suggested AVX_256
instead. With AVX_256 the compilation is interrupted with the FFTW error
below. In this case I am in need of more CPU power due to the multiple GPUs
installed.
