| Re: [eigen] speedup debug mode |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] speedup debug mode
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Wed, 5 Oct 2011 18:06:06 -0400
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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