[Paraview] Calculator performing poorly in ParaView-3-8 branch

[Utkarsh Ayachit]

John,

Attached is a patch. Can you verify that it overcomes the performance
issues you are seeing? If so, I'll commit it to CVS and get in 3.8
branch as well.

Utkarsh

On Tue, Apr 13, 2010 at 3:23 PM, John Patchett <patchett2002 at gmail.com> wrote:
> I've noticed the calculator has started performing substantially
> slower in the ParaView-3-8 branch when taking the magnitude of a
> vector as compared to the Head before the branch.
> I've attached a graph summarizing the performance degradation.  I used
> the Mandelbrot source and took the magnitude of the coords vector to
> collect data for the graph.
> One of my machines averages nearly a 6x slowdown and the other a 4.5x slowdown.
>
> The *-march is a Head build  from 3/23/2010.
> 3-8 is the branch as of yesterday afternoon.
>
> I (believe) the change that affected the calculator performance
> happened after the branch as I noticed it after I updated the branch (
> I wouldn't bet too much on this though)...  I don't know if the Head
> is affected.
>
> Thanks,
> --John Patchett.
>
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