[ET Trac] [Einstein Toolkit] #963: Improve McLachlan accuracy

[Einstein Toolkit]

#963: Improve McLachlan accuracy
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  Reporter:  eschnett               |       Owner:        
      Type:  enhancement            |      Status:  review
  Priority:  major                  |   Milestone:        
 Component:  EinsteinToolkit thorn  |     Version:        
Resolution:                         |    Keywords:        
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Comment (by diener):

 I have just added a patch towards the development version. I have tested
 that all the testsuites passes using this version and ran a modified
 version of the qc0-mclachlan.par parameter for 5M and tested that then old
 and the new version gives the same results both when running using the
 standard phi- and W-methods. However, I noticed that the RHS1 routine is
 more expensive now. With the repository version I get (from the
 TimerReport):

 ML_BSSN         | ML_BSSN_RHS1                            |
 224.50275900 |

 while with the new version I get:

 ML_BSSN         | ML_BSSN_RHS1                            |
 425.99931700 |

 while the timings for all other McLachlan routines are essentially
 unchanged. I currently can't explain this difference in time. It doesn't
 seem like there is enough new calcuations added to warrant such an
 increase. I will investigate further.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/963#comment:5>
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