Trac November 2011

trac@lists.einsteintoolkit.org

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166 discussions

[Einstein Toolkit] #283: Update and make CoreDoc.pdf available in the EinsteinToolkit website
by Einstein Toolkit 10 May '13

10 May '13

#283: Update and make CoreDoc.pdf available in the EinsteinToolkit website -------------------------------------+-------------------------------------- Reporter: bmundim | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit website | Version: Keywords: | -------------------------------------+-------------------------------------- The advanced concepts document: http://cactuscode.org/documentation/CoreDoc.pdf should be updated and made available in the ET website, both in pdf and html. Does anyone know where its .tex file version is located? Thanks, Bruno. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/283> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #322: SimFactory metadata deleted by periodic filesystem purges
by Einstein Toolkit 19 Apr '13

19 Apr '13

#322: SimFactory metadata deleted by periodic filesystem purges -------------------------+-------------------------------------------------- Reporter: hinder | Owner: mthomas Type: enhancement | Status: new Priority: minor | Milestone: Component: SimFactory | Version: Keywords: | -------------------------+-------------------------------------------------- Production filesystems are subject to periodic purges (typically on the order of weeks or months) where data which has not been accessed recently is deleted. This means that it is possible for some restarts of very long-running simulations to be deleted by the system. This can be addressed by an automated archiving system, but such a system does not address the problem that the simulation metadata directory (currently called SIMFACTORY) and any restarts which have not been run yet, will also be purged. This would make it impossible to submit future restarts and limits the number of chained restarts you can submit to the purge time of the system. One possibility to solve this problem would be to store a backup, or "shadow" copy of all the simulation metadata in a non-volatile location. This could be the user's home directory, or a "work" directory which is not purged. The details would need to be worked out. This is not a serious issue yet. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/322> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #591: Add harmonic shift to McLachlan
by Einstein Toolkit 15 Apr '13

15 Apr '13

#591: Add harmonic shift to McLachlan -----------------------------------+---------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: McLachlan | -----------------------------------+---------------------------------------- The attached patch adds a harmonic shift condition to McLachlan. It does this by introducing a new real-valued parameter harmonicShift. This should be set to 0 for gamma-driver shift (the default, and the existing behaviour), and to 1 for harmonic shift. This is useful for code- correctness tests with the shifted gauge wave which is an exact solution of the Einstein equations in harmonic gauge. The harmonic shift equation has been tested with the shifted gauge wave exact solution and yields convergence to the exact solution. The current way that gauge conditions is handled in McLachlan is not very elegant, and I don't think this patch should be applied as-is. I am putting it here for anyone who might find it useful. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/591> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #624: Replace Cactus complex number implementation with C/C++ standard implementation
by Einstein Toolkit 08 Mar '13

08 Mar '13

#624: Replace Cactus complex number implementation with C/C++ standard implementation -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- Cactus offers CCTK_COMPLEX. This maps to the standard datatype in Fortran, but not in C or C++. It should map to the standard datatypes in C and C++ as well, so that the growing body of code written in C and C++ can reasonably make use of complex numbers. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/624> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #620: Simplify timelevel handling for Cactus thorn writers
by Einstein Toolkit 21 Nov '12

21 Nov '12

#620: Simplify timelevel handling for Cactus thorn writers -------------------------+-------------------------------------------------- Reporter: hinder | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- Currently, a thorn writer must declare the maximum number of timelevels for a variable in the interface.ccl file, then allocate a specific number of timelevels for which storage is allocated in the schedule.ccl file. There are rules for how many timelevels a variable should have. For example, to evolve using MoL I think you need at least two, whereas to evolve using mesh refinement with time prolongation order 2 you need three. The problem is that the person writing the thorn shouldn't have to know how it is going to be used. If I write an evolution thorn, I should not care whether it is used with mesh refinement or not. I certainly shouldn't have to care what prolongation order is going to be used. Would it be possible for Cactus to automatically determine the number of timelevels needed for a given variable? My proposal is that it should not be necessary for the user to specify the number of timelevels in the interface.ccl or schedule.ccl file for variables declared in that thorn. The only time a thorn writer should have to do that is if that thorn specifically uses the other timelevels. For example, a thorn which couples to MoL will probably only ever read or write to the current timelevel. MoL, on the other hand, could tell Cactus that it needs a certain number of timelevels at runtime for those variables. Similarly for mesh refinement. This goes along with the planned changes to the scheduling system to make it easier to program Cactus thorns and make it harder to make errors. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/620> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #163: Assertion `tl>=0 and tl<timelevels' failed error
by Einstein Toolkit 13 Nov '12

13 Nov '12

#163: Assertion `tl>=0 and tl<timelevels' failed error ------------------------------------+--------------------------------------- Reporter: azebrowski@… | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: Component: Carpet | Version: Keywords: | ------------------------------------+--------------------------------------- I'm currently running a Cactus simulation based off the ET mclachlan parameter file. I have some custom thorns which force checkpointing every iteration, and then write new parameter files. The new parameter files are used to run specific functions from the host simulation ("spawning"), but I'm having some problems resuming simulations. Currently, I get this error when resuming: INFO (Carpet): GF: rhs: 818k active, 1440k owned (+76%), 1896k total (+32%), 328 steps/time cactus_sim: /home/azebrowski/Cactus/arrangements/Carpet/CarpetLib/src/th.hh:79: double th::get_time(int, int, int) const: Assertion `tl>=0 and tl<timelevels' failed. [cyder:32759] *** Process received signal *** [cyder:32759] Signal: Aborted (6) I'm guessing there's a parameter I'm not setting properly in my child simulation, could anyone give me a pointer to where I should be looking? I looked for things relating to timelevels in the host/spawned parameter files, but didn't see anything that stood out. My parameter files used and full output are attached to this email, with the disclaimer that I modified the spawned parameter file to run every function instead of skipping some in an attempt to bypass any problems that could be caused by skipping some Carpet function on accident. I've made a bzipped tarball containing the checkpointed data from the simulation. It contains several parameter files. The parameter file of interest here is spawn.par, as it doesn't use any of my custom code but still causes Cactus to abort with an error. I left the other parameter files in on the off chance that I might need to refer to them later. Here is the source parameter file, which creates the spawned simulation: http://www.cct.lsu.edu/~azebrowski/ml-ahfinder-spawn.par Here is the spawned simulation's parameter file: http://www.cct.lsu.edu/~azebrowski/spawn.par Here is the full checkpointed data and another copy of the spawned parameter file: http://www.cct.lsu.edu/~azebrowski/data.tar.bz2 Other information: I ran the simulation using OpenMP with 12 cores to generate the checkpointed data. I've also tried MPI, but that didn't seem to make a difference. Thornlist: http://www.cct.lsu.edu/~azebrowski/ThornList gcc: azebrowski@cyder:~/Cactus$ gcc -v Using built-in specs. Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable- shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) Fortran is gfortran-4.4 I'm using the Mercurial version of Carpet, and the ET development thorns. If you need more information, please let me know. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/163> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #434: Keep track of masked-out volume in CarpetMask
by Einstein Toolkit 08 Nov '12

08 Nov '12

#434: Keep track of masked-out volume in CarpetMask -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: eschnett Type: enhancement | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: | -------------------------+-------------------------------------------------- Keep track of the volume that is masked out by CarpetMask, and take this volume into account when checking in CarpetReduce that the integral over the simulation domain equals the domain volume. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/434> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #663: thornlists within Cactus should get cleaned up
by Einstein Toolkit 01 Nov '12

01 Nov '12

#663: thornlists within Cactus should get cleaned up -------------------------+-------------------------------------------------- Reporter: knarf | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Cactus | Version: development version Keywords: | -------------------------+-------------------------------------------------- Most of the thornlists in https://svn.cactuscode.org/Utilities/trunk/Thornlist* are out of date, and should get cleaned up. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/663> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #361: delta_time when setting up ID with explicit time dependence
by Einstein Toolkit 28 Oct '12

28 Oct '12

#361: delta_time when setting up ID with explicit time dependence ------------------------------------------+--------------------------------- Reporter: eloisa.bentivegna@… | Owner: eschnett Type: defect | Status: new Priority: minor | Milestone: Component: Carpet | Version: ET_2010_11 Keywords: | ------------------------------------------+--------------------------------- In CallInitial, delta_time is used to calculate the time corresponding to the different timelevels (line 399 of Carpet/src/Initialise.cc). At this stage, though, delta_time is always equal to 1, leading to potentially very separated initial-data slices when using init_each_timelevel and an initial-data thorn that uses cctk_time explicitly. Should cctkGH->cctk_delta_time be used here instead? -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/361> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #323: GetComponents overwrites thorn list
by Einstein Toolkit 25 Oct '12

25 Oct '12

#323: GetComponents overwrites thorn list ---------------------------+------------------------------------------------ Reporter: eschnett | Owner: eric9 Type: defect | Status: new Priority: critical | Milestone: Component: GetComponents | Version: Keywords: | ---------------------------+------------------------------------------------ I specified a thorn list located in the main Cactus directory. GetComponents overwrote this thorn list with its own thorn list (the one it generates automatically). -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/323> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac November 2011