Trac March 2015

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113 discussions

[Einstein Toolkit] #1726: GRHydro updates
by Einstein Toolkit 22 Mar '15

22 Mar '15

#1726: GRHydro updates -----------------------------------+---------------------------------------- Reporter: rhaas | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: GRHydro | -----------------------------------+---------------------------------------- Pull request at: https://bitbucket.org/einsteintoolkit/einsteinevolve/pull-request/4 /grhydro-updates/diff The only major change is https://bitbucket.org/einsteintoolkit/einsteinevolve/commits/cc0a1d2cb89b6d… which add WENO reconstruction for polytropes. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1726> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1730: Test failure in GRHydro's balsara4_1d
by Einstein Toolkit 21 Mar '15

21 Mar '15

#1730: Test failure in GRHydro's balsara4_1d -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- I see test failures in GRHydro's balsara4_1d. The maximum absolute difference is about 1e-10, the maximum relative difference about 1e-11. This seems like a problem with tolerances. Can someone with GRHydro experience check? -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1730> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1752: GRHydro con2prim is not a projection
by Einstein Toolkit 09 Mar '15

09 Mar '15

#1752: GRHydro con2prim is not a projection -----------------------------------+---------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: GRHydro | -----------------------------------+---------------------------------------- For proper functionality Carpet requires that the MoL_PostStep group is a projection, that is applying it twice in a row may not change values. This is the assumption that goes eg into restriction but also into checkpoint recovery where MoL_PostStep runs on the current timelevel just after recovery. Because of this recovering a checkpoint with GRHydro active is not restoring the simulation to a bitwise identical state to what it was when writing a checkpoint. The best solution would be to make GRHydro no longer use the "old" primitives as an initial guess which would also reduce the number of SYNCs required. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1752> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac March 2015