Re: [eigen] OpenMP support in the default branch

[Konstantinos Margaritis <markos@xxxxxxxx>]

On Friday 05 March 2010 12:06:02 Gael Guennebaud wrote:
> Hi,
> 
> The SMP branch has been merged in the default one. Here is a short summary
> of what is new and how to use it:
> 
> - improved matrix products, even for non SMP code.
> 
> - to enable SMP support, simply enable openmp with your compiler (-fopenmp
> for gcc, -openmp for ICC, etc.)

Hehe, just thought I'd say that it works even for non-x86 architectures, this 
is from a prototype quad-core ARM Cortex-A9 @400Mhz (it's a prototype :)

$ OMP_NUM_THREADS=4 ./bench_gemm.gcc4.5.neon
1
eigen cpu         0.88s         0.30504 GFLOPS  (4.58s)
eigen real        0.228538s     1.17458 GFLOPS  (1.15504s)
eigen mono cpu    0.84s         0.319566 GFLOPS         (4.23s)
eigen mono real   0.84706s      0.316903 GFLOPS         (4.23695s)
mt speed up x3.67554 => 91.8886%

great job Gael!

Konstantinos