Trac October 2022

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#2174: Test "Multi Patch Scalar Wave Equation" example
by Roland Haas 12 Oct '22

12 Oct '22

#2174: Test "Multi Patch Scalar Wave Equation" example Reporter: Roland Haas Status: open Milestone: ET_2022_11 Version: development version Type: task Priority: major Component: EinsteinToolkit website Changes (by Roland Haas): responsible: [] (was ) milestone: ET_2022_11 (was ET_2022_05) assignee: Kalyanaraman, Hrishikesh (was ) -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2174/test-multi-patch-…

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#2174: Test "Multi Patch Scalar Wave Equation" example
by Roland Haas 12 Oct '22

12 Oct '22

#2174: Test "Multi Patch Scalar Wave Equation" example Reporter: Roland Haas Status: open Milestone: ET_2022_05 Version: development version Type: task Priority: major Component: EinsteinToolkit website Comment (by Roland Haas): Hrishikesh Kalyanaraman will handle this gallery example for ET\_2022\_11 -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2174/test-multi-patch-…

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#2656: PreSync syncing more than old code
by Samuel Cupp 12 Oct '22

12 Oct '22

#2656: PreSync syncing more than old code Reporter: Samuel Cupp Status: new Milestone: Version: development version Type: bug Priority: major Component: Carpet Comment (by Samuel Cupp): I’m also considering the possibility that this could be because the read/writes on two of the functions aren’t right. I based them on the loops \(everywhere\), but I think the floor\_the\_lapse and enforce\_detgammahat functions actually only need to be read/write \(interior\). I have to carefully count the number of syncs per iteration to figure this out. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2656/presync-syncing-m…

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#2173: Test "Poisson equation" example
by Roland Haas 12 Oct '22

12 Oct '22

#2173: Test "Poisson equation" example Reporter: Roland Haas Status: open Milestone: ET_2021_11 Version: development version Type: task Priority: major Component: EinsteinToolkit website Comment (by Roland Haas): @{6345b6047d10ef7914928a58} will take care of this test for ET\_2022\_11 -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2173/test-poisson-equa…

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#2173: Test "Poisson equation" example
by Roland Haas 12 Oct '22

12 Oct '22

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#2656: PreSync syncing more than old code
by Samuel Cupp 11 Oct '22

11 Oct '22

#2656: PreSync syncing more than old code Reporter: Samuel Cupp Status: new Milestone: Version: development version Type: bug Priority: major Component: Carpet Comment (by Samuel Cupp): As an update, commenting out these set\_valids stops the syncs from happening. So, something here is changing the behavior of the code. Are we sure that this is what we want to do here? @{557058:59e031ba-9bb5-4298-a472-7b99d0ae6f22} @{557058:1671c5c3-29cc-4e83-9850-a152d33a6235} -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2656/presync-syncing-m…

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#2656: PreSync syncing more than old code
by Samuel Cupp 11 Oct '22

11 Oct '22

#2656: PreSync syncing more than old code Reporter: Samuel Cupp Status: new Milestone: Version: development version Type: bug Priority: major Component: Carpet I have been investigating the source of the slowdown for the evolution of a BBH using BaikalVacuum when PreSync is turned on. The largest problem was reported in [Ticket #2653](https://bitbucket.org/einsteintoolkit/tickets/issues/2653/carpet-presync-triggering-syncs-for-all), but the code is still noticeably slower than without PreSync. I have tracked the extra sync calls to restriction. There is one group which is only written, never read. In the old way, these syncs were manually scheduled in the schedule.ccl. PreSync \(properly\) syncs this group at restriction at every refinement level. The observed behavior shows it 1\. Syncs the group aux\_variables from the coarsest to finest level Then, it begins heading back up the levels, presumably to begin the restriction operation. However, it then 2\. syncs the groups aux\_variables and evol\_variables from finest to coarsest, skipping the finest level The syncs in 2 are not present in the old way. Either the old way wasn’t properly syncing during restriction, or PreSync is introducing extra syncs into this operation. I’m inclined to believe the latter. My guess as to the possible source of this is the code ``` // Restrict a refinement level void ggf::ref_restrict_all(comm_state &state, int const tl, int const rl, int const ml) { if (transport_operator == op_none or transport_operator == op_sync) return; static Timer timer("ref_restrict_all"); timer.start(); // Require same times assert(std::fabs(t.get_time(ml, rl, tl) - t.get_time(ml, rl + 1, tl)) <= 1.0e-8 * (1.0 + std::fabs(t.get_time(ml, rl, tl)))); transfer_from_all(state, tl, rl, ml, &dh::fast_dboxes::fast_ref_rest_sendrecv, tl, rl + 1, ml); timer.stop(0); // Update state, both fine and coarse bcome invalid in the boundaries // coarse b/c fine was restricted to it, fine b/c prologation from coarse // will change values int const coarse_old_valid = valid(ml, rl, tl); set_valid(ml, rl, tl, coarse_old_valid & ~(CCTK_VALID_GHOSTS|CCTK_VALID_BOUNDARY)); int const fine_old_valid = valid(ml, rl, tl); set_valid(ml, rl + 1, tl, fine_old_valid & ~(CCTK_VALID_GHOSTS|CCTK_VALID_BOUNDARY)); } ``` which sets the validities to be interior only at the end. I’ll verify that this code triggers the syncs and comment with more info when I have it. -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2656/presync-syncing-m…

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#2173: Test "Poisson equation" example
by Roland Haas 11 Oct '22

11 Oct '22

#2173: Test "Poisson equation" example Reporter: Roland Haas Status: open Milestone: ET_2021_11 Version: development version Type: task Priority: major Component: EinsteinToolkit website Changes (by Roland Haas): responsible: (was []) assignee: (was Miguel Gracia) Before each release, check that http://einsteintoolkit.org/gallery/poisson/index.html still works and produces correct output. Then upload the results file to [https://bitbucket.org/einsteintoolkit/www/downloads/](https://bitbucket.org… **Keyword:** None ‌ -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2173/test-poisson-equa…

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#2175: Test "Single, stable neutron star" example
by Roland Haas 11 Oct '22

11 Oct '22

#2175: Test "Single, stable neutron star" example Reporter: Roland Haas Status: open Milestone: ET_2021_11 Version: development version Type: task Priority: major Component: EinsteinToolkit website Changes (by Roland Haas): Before each release, check that http://einsteintoolkit.org/gallery/ns/index.html still works and produces correct output. Then upload the results file to [https://bitbucket.org/einsteintoolkit/www/downloads/](https://bitbucket.org… **Keyword:** None -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2175/test-single-stabl…

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#2176: Test "Binary neutron star" example
by Roland Haas 11 Oct '22

11 Oct '22

#2176: Test "Binary neutron star" example Reporter: Roland Haas Status: open Milestone: ET_2022_11 Version: development version Type: task Priority: major Component: EinsteinToolkit website Changes (by Roland Haas): Before each release, check that http://einsteintoolkit.org/gallery/bns/index.html still works and produces correct output. Then upload the results file to [https://bitbucket.org/einsteintoolkit/www/downloads/](https://bitbucket.org… **Keyword:** None -- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2176/test-binary-neutr…

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Trac October 2022