[ale] OT: Multi-core Utilization

[Cleveland Flowe]

Eigen or Intel MKL (if you're on Intel) with OpenMP should help.

http://eigen.tuxfamily.org/dox-devel/GettingStarted.html

http://software.intel.com/en-us/intel-mkl

http://openmp.org/wp/
On Mar 8, 2013 11:35 AM, "Jeff Hubbs" <jhubbslist at att.net> wrote:

> My *practical* experience has a hole in it when it comes to developing
> software to efficiently use multiple cores in a machine.
>
> If I'm writing code in the likes of C++, Python, or Fortran (acknowledging
> that I've got a range of programming paradigms there) and let's say that
> I'm subtracting two 2-D arrays of floating point numbers from one another
> element-wise, how is it that the operation gets blown across multiple CPU
> cores in an efficient way, if at all?  Bear in mind that if this is done in
> Fortran, it's done in a pair of nested do-loops so unless the compiler is
> really smart, that becomes a serial operation.
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