[ET Trac] [Einstein Toolkit] #2173: Test "Poisson equation" example

Einstein Toolkit trac-noreply at einsteintoolkit.org
Tue Aug 7 10:42:57 CDT 2018

#2173: Test "Poisson equation" example
  Reporter:  Roland Haas              |      Owner:  Roland Haas
      Type:  task                     |     Status:  accepted
  Priority:  major                    |  Milestone:  ET_2018_08
 Component:  EinsteinToolkit website  |    Version:  development version
Resolution:                           |   Keywords:

Comment (by Roland Haas):

 I re-ran the example using current master code and got this graph for the
 error (terr value, plotted as line number vs. column 2):


 However looking at the values of the coefficient (or the solution in psi
 for that matter) reveals that not all is well:

 [[Image(ct_testc0.jpg, 600px)]]

 namely of the 5 Gaussian blobs mentioned in the parfile only 2 show up.

 Some digging reveals that this is b/c of a not-backwards compatible change
 to CT_Analytic in  [https://bitbucket.org/eloisa/ctthorns/commits/d07b160
 d07b160] - (tag: ET_2015_11_v0) Reduced number of terms of gaussian[]
 superposition in Analytic.m in the first version of the thorn in the

 This is in principle ok since it never supported more than 2 Gaussian
 blobs while in the ET but we likely should

 1. remove the non-functional parameters from param.ccl
 1. regenerate the gallery example with the correct data

Ticket URL: <https://trac.einsteintoolkit.org/ticket/2173#comment:2>
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