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Intel C/C++ Compiler Beats GCC

Posted by michael on from the giving-her-all-she's-got-captain dept.

jfonseca writes: "An article from Open Magazine claims the new Intel C/C++ compiler's geometric mean performance on multiple kernels compiled through it reached 47% improvement over GCC. They also predict the end to the ubiquitous GNU compiler due to low performance. Many other compiler/platform combinations also compared. A bit pretentious, yet an interesting read."

1 of 580 comments (clear)

  1. For mathematical applications by Zo0ok · · Score: 3, Funny

    The code tested computed some kind of geometric mean... It is not surprising att all that performance can be improved significantly by optimising against parallell instructions (such as SSE/SSE2). There is no guarantee that any major improvements will be seen on an "ordinary application".

    However, I will find use for this information and I will try Intels compiler and compare it to GCC.

    Very minor changes in the code of this kind of high-performance applications can result in very big speed-ups, with any compiler. It would be interesting to see some real world problem (some PDE-model or something) based on for example BLAS (Basic Linear Algebra Solver, or something, www.netlib.org), being computed with gcc/icc and see the "real" difference.