Floating-Point Nondeterminism

IEEE-754 transcendental and accumulation results differ subtly across CPU/GPU, libm, and compiler, so the same computation is not bit-reproducible on different platforms — which both undermines reproducible/verifiable computation and leaks the underlying platform.

grounded in: latest-trends theme: 'a subtle math-function quirk now deanonymizes users' OS' via platform-varying floating-point results