4 ms·

For these sorts of things, please do not assume hardware is reliable and compilers are bug free.

• kardos 2y ago
  Sounds like a mechanism to test for bad hardware (akin to memtest86) and find compiler bugs =)
  • bobmcnamara 2y ago
    Bingo - even if we do everything right the percentage of matching builds isn't expected to be 100%. If it is, there just aren't enough samples. My first Pentium could usually but not always math correctly until Intel replaced it during a recall.
  • yjftsjthsd-h 2y ago
    In a slightly different form, this has already happened: https://julialang.org/blog/2020/09/rr-memory-magic/ https://julialang.org/blog/2020/09/rr-memory-magic/
• 8organicbits 2y ago
  Bug free is less important for reproducible builds, so long as the bugs are reproducible. Compiler bugs are of course still a problem for other reasons.
  • bobmcnamara 2y ago
    My point is only that even when the software is correct, the reproducible build rate will either be 100% or we've got a representative sample set. Until then, those issues will continue to be lumped together with all the software reasons it wasn't reproducible.