[Carpet] poison in Rotatingsymmetry90

[Erik Schnetter]

Hi Giovanni.

On Jun 19, 2007, at 04:38:53, corvino at fis.unipr.it wrote:

> Hi, I'm running a simulation in bitant symmetry with reflection  
> along the
> z axis. I poisoned the symmetry boundary using the parameter in
> RotatingSymmetry90 and I don't understand the output. In attach  
> there are
> the parameter file, the std output and error of the run, I'm using  
> carpet
> stable 3.

You are really only simulating an octant, since you are also using  
RotatingSymmetry90.  Your grid setup is inconsistent with that; the  
lower boundary in the x and y directions should then be at 0, not at  
-55.

> My questions are:
> Does this output mean that the poison is the cause of the  
> simulation crash?

Yes.

> How do I interpret that list of triplets of number: are they the
> coordinates or indexes of the point where poison was found?

Yes, they are the indices.

> These numbers refer to points where poison was found or not?

Where poison was found.

> In this case how many poisoned points does the code print to screen?

All poisoned points.  You can also look at the source code, file  
rotatingsymmetry90.c.  Look for the place where the string "ijk"  
appears -- this is where the output is generated.



The error that RotatingSymmetry90 reports means that it could not  
apply the symmetry condition.  The most likely cause is that the grid  
structure itself does not have the necessary symmetry.

Do you want to use a rotating symmetry?  Depending on this, you  
should either deactivate the thorn or change the grid structure.

-erik

-- 
Erik Schnetter <schnetter at cct.lsu.edu>

My email is as private as my paper mail.  I therefore support encrypting
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