Re: In V7, is it possible to parallelize DensityPlot?
- To: mathgroup at smc.vnet.net
- Subject: [mg93919] Re: In V7, is it possible to parallelize DensityPlot?
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 28 Nov 2008 05:10:42 -0500 (EST)
- Organization: Uni Leipzig
- References: <gglsti$8gk$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
sincs version 6. Mathematica uses an adaptive mesh for the density plot
and there are *no* in the plot. Only triangles as to see from:
DensityPlot[Sin[x*y], {x, -Pi, Pi}, {y, -Pi, Pi}, Mesh -> All]
and since the mesh subdivision seems to be a global operation it
would be very hard to parallelize it.
The final rendering is done by the graphics card and since it is a IO
operation it can't be parallel outside of the graphics card.
Regards
Jens
Stoney Ballard wrote:
> It seems that DensityPlot is a natural candiate for parallelization,
> but my experiments in Mathematica V7 all result in the warning "...
> cannot be parallelized; proceeding with sequential evaluation". Is
> this capability just not yet implemented, or is there a trick to get
> multiple pixels to be evaluated in parallel?
>
>