[Users] Meeting minutes

Ian Hinder ian.hinder at aei.mpg.de
Tue May 24 01:11:38 CDT 2011

On 23 May 2011, at 23:49, Bruno Coutinho Mundim wrote:

>> * Bruno still has troubles with RotatingSymmetry180 when using the 
>> development version of ET for the BBH example (parfile is in subversion)
>> * will try running without RotatingSymmetry180
> Just got the results: no problem without RotatingSymmetry180.

OK good, so we know where the problem is.

>> * convergence in norms is bad, somewhat better in 1D data for a short 
>> time after simulation startup
> A closer look into the initial data revealed that both the l2-norm of
> the hamiltonian constraint and its value along the x-axis converge to
> the expected order, 4th order. This convergence is not observed anymore
> in the very next coarse step when the comparison is done again.

The time prolongation is only 3rd order accurate so I wouldn't expect convergence at 4th order.

Ian Hinder
ian.hinder at aei.mpg.de

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