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Intel Fortran vs gcc ??? How about Intel Fortran vs. Intel C ? How about gcc C vs. gcc Fortran ? Hyper-optimized compiler for Intel architecture beats compile

Intel Fortran vs gcc ??? How about Intel Fortran vs. Intel C ? How about gcc C vs. gcc Fortran ? Hyper-optimized compiler for Intel architecture beats compiler designed to be portable to many, many target architectures? Not very shocking.

mrich 15y ago
This. ICC is known to beat gcc usually.
- jbooth 15y ago
  Yeah, I'd suspect that better use of SSE instructions is the big win for number crunching.
  - igouy 15y ago
    https://alioth.debian.org/forum/forum.php?thread_id=14867&forum_id=999&group_id=30402 https://alioth.debian.org/forum/forum.php?thread_id=14867&#3...
    - jbooth 15y ago
      Cool. Yeah, seems like it's better inlining and use of XMM registers more than the SSE instructions themselves.