[ET Trac] #2745: Inclusion of GRHayL library and associated MHD thorns

[Peter Diener]

#2745: Inclusion of GRHayL library and associated MHD thorns

 Reporter: Samuel Cupp
   Status: new
Milestone: ET_2023_11
  Version: 
     Type: enhancement
 Priority: major
Component: EinsteinToolkit thorn

Comment (by Peter Diener):

I have compiled with both the gnu and intel compilers on my laptop and find that the test “Balsara1” fails with the intel compilers but passes with the gnu compilers. Looking at this in more details, it looks to be an issue with the initial data setup. In the parameter file, the discontinuity position is set to zero. With the gnu compilers this results in the pressure being 1 at x=0 and 0.1 at x=0.000625. With the intel compilers the pressure is 1 at x=-0.000625 and 0.1 at x=0. So somehow the iniitlal profile is shifted by dx. Looks like there is some sensitivity to difference in rounding between the compilers.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2745/inclusion-of-grhayl-library-and-associated
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