Re: [eigen] compile time statistics |

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] compile time statistics*From*: Benoît Jacob <jacob@xxxxxxxxxxxxxxx>*Date*: Tue, 17 Jun 2008 14:30:07 +0200

Thanks a lot! Very, very, very useful. I'll have a look at my worst recent commits, 813931 and 815061. As for the recent oscillations around 821090, it's just that a bug compiled faster, nothing to see here. > for the cost model bench note that the number of loops depends on the > size of the matrices, so you cannot really compare 2 "rows". ah ok, i'm stupid. > Moreover > the number of loops for the scalar product is divided by two. The > purpose was to get a similar running time for all cases. That is weird > is that the scalar product is mush slower than the matrix sum, maybe > we could try a cwise product to see what happens.... perhaps it's just that muls still cost more than adds... Benoit

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**References**:**[eigen] compile time statistics***From:*Gael Guennebaud

**Re: [eigen] compile time statistics***From:*Benoît Jacob

**Re: [eigen] compile time statistics***From:*Gael Guennebaud

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