Trac November 2017

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[Einstein Toolkit] #181: AEILocalInterp should not off-centre the interpolation stencil by default
by Einstein Toolkit 19 Nov '17

19 Nov '17

#181: AEILocalInterp should not off-centre the interpolation stencil by default ----------------------------+----------------------------------------------- Reporter: hinder | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: Cactus | Version: Keywords: AEILocalInterp | ----------------------------+----------------------------------------------- AEILocalInterp by default will off-centre the interpolation stencil if there are insufficient points to perform the interpolation. In a parallel setting, this could happen due to there being insufficient ghost points for the interpolator chosen. The off-centering leads to an interpolation error which is of the correct order but larger than for a centered stencil. More importantly, it leads to different results on different numbers of processes. This violates a basic design principle of Cactus, and the expectation of users, that changing the number of processors should not change the results of a simulation. I propose that instead of silently off-centering the stencil, AEILocalInterp should abort with an error indicating that there are insufficient ghost-zones. The interpolator options corresponding to this are: boundary_off_centering_tolerance={0.0 0.0 0.0 0.0 0.0 0.0} boundary_extrapolation_tolerance={0.0 0.0 0.0 0.0 0.0 0.0} -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/181> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2085: ET header bar covers text for mid-sized window width
by Einstein Toolkit 19 Nov '17

19 Nov '17

#2085: ET header bar covers text for mid-sized window width -------------------------------------+-------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit website | Version: development version Keywords: | -------------------------------------+-------------------------------------- The ET bar (at least for my browser and my OS and my screen) covers part of the website for mid-sized (and small though not all will show it) windows. Please see attached screenshots. Mostly it just seems to affect the headings but that seems to be accidental. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2085> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2068: Support KNL's AVX512 instruction set
by Einstein Toolkit 06 Nov '17

06 Nov '17

#2068: Support KNL's AVX512 instruction set ----------------------+----------------------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: major | Milestone: Component: Cactus | Version: development version Keywords: | ----------------------+----------------------------------------------------- The main point of this pull request is to support KNL's AVX512 instruction set. This pull request also contains a few other changes on which the AVX512 depends. See [https://bitbucket.org/cactuscode/cactusutils/pull-requests/13 /support-knls-avx512-instruction-set/diff]. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2068> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #2074: Correct error in vertex-centred prolongation operators
by Einstein Toolkit 06 Nov '17

06 Nov '17

#2074: Correct error in vertex-centred prolongation operators ----------------------+----------------------------------------------------- Reporter: eschnett | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: Component: Carpet | Version: development version Keywords: | ----------------------+----------------------------------------------------- See <https://bitbucket.org/eschnett/carpet/pull-requests/19/correct-error- in-vertex-centred/diff>. This corrects #2068. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/2074> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac November 2017