https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101683
--- Comment #6 from bartoldeman at users dot sourceforge.net --- "really not many people care about floating point exceptions". I think more people should :) but this is indeed the context. We found this issue on a supercomputer running OpenFOAM (which can enable FP exceptions, see https://cpp.openfoam.org/v3/a02284.html), and a small simple MPI program with FP exceptions enabled. Even then it crashed in an underlying library, and not OpenFOAM itself, see https://github.com/ComputeCanada/software-stack/issues/74 In the end the combination of MPI and FP exceptions easily triggers it, but the vast majority of jobs don't crash, so even on our cluster this is very rare indeed. And many other clusters don't compile the UCX library with avx512 optimizations enabled or use precompiled binaries without those enabled.
