Matthias Wittgen added a comment - 09/Nov/21 1:46 AM Intel provides the oneAPI compiler icpx , icx in the intel conda channel and they can be installed on top of the lsst stack . eups packages that are not scons based use non uniform compiler flags As a proof of concept this was hacked by creating wrapper shell scripts invoking the intel compiler and adding extra flags. #!/bin/sh link= true extraflags1= "" extraflags2= "" prefix=$( dirname $( dirname $( which gcc ))) if [ "$1" == "--version" ] then exec icx --version fi   for arg in "$@" do if [[ "$arg" == -c ]] then link= false break fi   done if $link then extraflags1= "-B$prefix/lib/gcc/x86_64-conda-linux-gnu/9.4.0" extraflags2= "-L$prefix/lib/gcc/x86_64-conda-linux-gnu/9.4.0" extraflags3= "-xCORE-AVX2 -fp-model=precise" else extraflags1= "-I$prefix/x86_64-conda-linux-gnu/include/c++/9.4.0" extraflags2= "-I$prefix/x86_64-conda-linux-gnu/include/c++/9.4.0/x86_64-conda-linux-gnu" extraflags3= "-xCORE-AVX2 -fp-model=precise"   fi echo icx $extraflags1 $extraflags2 $extraflags3 $@ exec icx $extraflags1 $extraflags2 $extraflags3 $@ Compilation requires to use floating point model -fp-model=precise lsst_dsitrib can be successfully compiled without any changes to the code.