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.
---------------------------------------------------------- libtool: compile: /opt/apps/compilers/gcc/5.3.0/bin/gcc -DHAVE_CONFIG_H -I. -I/.../gromacs-2018.2/buildavx/src/contrib/fftw/fftwBuild-prefix/src/fftwBuild/dft/simd/avx2-128 -I../../.. -I /.../gromacs-2018.2/buildavx/src/contrib/fftw/fftwBuild-prefix/src/fftwBuild -march=core-avx2 -mfma -O3 -fomit-frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns -MT n2sv_32.lo -MD -MP -MF .deps/n2sv_32.Tpo -c /gromacs-2018.2/buildavx/src/contrib/fftw/fftwBuild-prefix/src/fftwBuild/dft/simd/avx2-128/n2sv_32.c -fPIC -DPIC -o n2sv_32.o /tmp/cczju8Es.s: Assembler messages: /tmp/cczju8Es.s:33: Error: no such instruction: `shlx %rbx,56(%rsp),%rbx' make[8]: *** [n2sv_4.lo] Error 1 make[8]: *** Waiting for unfinished jobs.... /tmp/ccsZIbpx.s: Assembler messages: /tmp/ccsZIbpx.s:35: Error: no such instruction: `shlx %rbx,64(%rsp),%rbp' make[8]: *** [n2sv_8.lo] Error 1 /tmp/ccdxksFN.s: Assembler messages: /tmp/ccdxksFN.s:50: Error: no such instruction: `shlx %rbx,400(%rsp),%rbx' make[8]: *** [n2sv_16.lo] Error 1 /tmp/ccTdLLjQ.s: Assembler messages: /tmp/ccTdLLjQ.s:68: Error: no such instruction: `shlx %rbx,1168(%rsp),%rbx' Any suggestions are welcome. Thanks, Mateusz Linux: Scientific Linux release 6.6 (Carbon) gcc 5.3.0 -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.
