Re: [eigen] speedup debug mode

[Michel <michel.pacilli@xxxxxxx>]

great!

and with precompiled headers, just perfect!
kind of magic to see ~10% speed gain, between u = 1.123 * v.array() + 
5.236 * w.array() and the for loop equivalent.

regards

Le 06/10/2011 00:06, Benoit Jacob a écrit :
> 2011/10/5 Gael Guennebaud<gael.guennebaud@xxxxxxxxx>:
> > Asserts are not very costly though you can disable Eigen's one with
> > -DEIGEN_NO_DEBUG.  The real slow down comes from the lack of inlining
> > and basic optimization. Compiling with -O1 -g2 usually gives a good
> > tradeoff.
> Inlining is very important indeed, and -O1 won't give you that. You
> could try -O1 -finline-functions if inlining is acceptable in your use
> case.
>
> Benoit