[Nauty] Squeezing out another 10%...
gordon at csse.uwa.edu.au
Mon Feb 14 16:57:02 EST 2005
I have discovered through experimentation that I get an additional 10%
performance out of geng (and hence presumably) nauty by altering the
optimization flags from the supplied defaults... I am using a Pentium 4
machine, and if I put
gcc -O2 -Dmarch=pentium4
then it is about 10% faster than
Interestingly, it proves better to use O1/O2 with the
architecture-specific flag than to use O3 or higher...
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