Trac June 2013

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[Einstein Toolkit] #905: NaNs in ADMBase::gxx using Development Version of ET
by Einstein Toolkit 06 Jun '13

06 Jun '13

#905: NaNs in ADMBase::gxx using Development Version of ET ---------------------------------+------------------------------------------ Reporter: yosef@… | Type: defect Status: new | Priority: major Milestone: | Component: Other Version: | Keywords: ---------------------------------+------------------------------------------ While testing the CCE in the ET, I stumbled across an issue interpolating the admbase::metric at CCTK_POSTSTEP in GLOBAL mode at particular spatial points. The "bug" (or parfile/scheduling error) seems to be sensitive to the exact grid setup. Basically, when I use the qc0-mclachlan-CCE_Cauchy.par parfile, I get nans for gxx. I made a small test thorn that only interpolates gxx at a particular point. Nans show up at iteration 1. attached is the parfile I used and the test thorn. Here is the output from the above test thorn: gxx(3.966899,0.000000,-17.630662) = 1.1160523626974641 at iter 0 on proc 1 gxx(3.966899,0.000000,-17.630662) = 1.1160523626974641 at iter 0 on proc 0 gxx(3.966899,0.000000,-17.630662) = -nan at iter 8 on proc 1 gxx(3.966899,0.000000,-17.630662) = -nan at iter 8 on proc 0 gxx(3.966899,0.000000,-17.630662) = -nan at iter 16 on proc 1 gxx(3.966899,0.000000,-17.630662) = -nan at iter 16 on proc 0 etc.... -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/905> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1376: Cactus loops endlessly if given the same name for aliased function and actual implementation
by Einstein Toolkit 05 Jun '13

05 Jun '13

#1376: Cactus loops endlessly if given the same name for aliased function and actual implementation --------------------+------------------------------------------------------- Reporter: knarf | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: Cactus | Version: development version Keywords: | --------------------+------------------------------------------------------- Currently, if an aliased function is declared in interface.ccl with {{{ PROVIDES FUNCTION fun WITH fun LANGUAGE C }}} Cactus goes into an infinite loop when calling that function. It does so because it creates a function 'fun' (the first) itself, which then calls (fun) the second. Instead, Cactus should already produce an error for above declaration. The two 'fun' must be different for this to work, and Cactus should catch this. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1376> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1375: Slab does not fille in outmost layer of points in mesh refinement levels
by Einstein Toolkit 01 Jun '13

01 Jun '13

#1375: Slab does not fille in outmost layer of points in mesh refinement levels -----------------------------------+---------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: Slab | -----------------------------------+---------------------------------------- This happens only for mesh refined runs and on reflevel>0 ie in the buffer zones. This happens only if the "useghosts" option is not set (it is unset by default). This behaviour is technically allowed by the docs since Slab only claims to fill in ghost zones and the outermost points are not ghosts but buffer zones (though Carpet disagrees somewhat on that in that it does not count them in buffer_width). Anyhow, this does not to my knowledge actually affect RotatingSymmetryXX which are the most prominent users, at least their poison_boundaries option does not seem to pick this up. To test, run the attached modified slabtest.par test file whcih fails in the identity test for level 1 unless useghosts=1 is used in slabtest.c (and fails int the skip-every-second point test if it is used). -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1375> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac June 2013