I tried the Intel C/C++ compiler (icc), 10.1.017, with MC-EZBC, see also my post on PGO with gcc.

icc 10.1.012 failed to compile the code, probably some compatibility issue with the gcc 4.2.3 installed on my system. The auto-vectorizer has to be disabled (-no-vec), otherwise the executable crashes.

Apart from that, the results are excellent (decoding 32 frames of the Foreman sequence, Intel Core2 Duo 2.66 GHz):

• 6.6 sec with -DNDEBUG -g -O3 -no-prec-div -static -fomit-frame-pointer -march=core2 -msse3 -no-vec
• 5.5 sec adding -ipo
• 5.0 sec adding -prof-use

The fastest gcc results is 10.2 sec.

posted at: 14:48 | path: /programming | permanent link