This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
A bit of additional testing, re: Intel vs. gcc
- From: "Scott Robert Ladd" <scott at coyotegulch dot com>
- To: "gcc List" <gcc at gcc dot gnu dot org>
- Date: Thu, 5 Dec 2002 10:59:12 -0500
- Subject: A bit of additional testing, re: Intel vs. gcc
I'm getting solid feedback from the Intel C++ vs. gcc benchmarks I published
yesterday. Thanks to those who've given me suggestions and ideas.
Today, I've had a chance to get both compilers working on a piece of
in-house production code: an 11,000-line simulation. Compiled with Intel C++
7.0, a deterministic "run" takes 6:23 minutes; when compiled with gcc 3.2.1,
the run executes in 5:28.
According to profiling, the Intel compiler is still limited by the
performance of its vector<> (the C++ template) implementation -- showing
that it isn't just code generation that affects program performance.
--
Scott Robert Ladd
Coyote Gulch Productions, http://www.coyotegulch.com
No ads -- just very free (and somewhat unusual) code.