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Re: Parallelize vs Compile

• To: mathgroup at smc.vnet.net
• Subject: [mg119359] Re: Parallelize vs Compile
• From: Oliver Ruebenkoenig <ruebenko at wolfram.com>
• Date: Wed, 1 Jun 2011 04:30:00 -0400 (EDT)

On Tue, 31 May 2011, Nicholas Goble wrote:

> My code seems to run much more quickly when I only use Parallelize[] as
> compared to any combination of Parallelize and Compile.  Even when I compile
> into C using CompilationTarget->"C" and with Parallelization->True.
>
> I thought that compiling would always make a program in Mathematica run
> faster. Why does it slow down?

that is impossible to assess without seeing the code.

>  Is Parallelize always the most efficient?
>

no.

> Nicholas Goble
>
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