Re: [eigen] FLENS C++ expression template Library has excellent documentation

[ Thread Index | Date Index | More Archives ]

2009/4/18 Rohit Garg <rpg.314@xxxxxxxxx>:
>> There are different use cases.
>> - many products of many small matrices
>> - one product of two large matrices
> This kind of question needs thought. You see, I was pretty
> disappointed at the rather poor performance of eigen in the Pentium D
> benchmarks.

This can be explained by the use of GCC 4.3 in this benchmark which is
less good than GCC 4.2 and 4.4 for Eigen.

> I am thinking that that is due to there being machine
> dependent constants in the eigen which need to be tuned for each
> machine.

There is basically one constant to tune, the cache size.


Mail converted by MHonArc 2.6.19+