Trac April 2013

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[Einstein Toolkit] #809: Add CactusExamples to Einstein Toolkit
by Einstein Toolkit 26 Nov '13

26 Nov '13

#809: Add CactusExamples to Einstein Toolkit -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: defect | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- I notice that the CactusExample thorns are not part of the Einstein Toolkit -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/809> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #896: Create testsuites for GRMHD sector of GRHydro
by Einstein Toolkit 24 Nov '13

24 Nov '13

#896: Create testsuites for GRMHD sector of GRHydro ---------------------------------------+------------------------------------ Reporter: bmundim | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: GRHydro, GRMHD, testsuite | ---------------------------------------+------------------------------------ Create testsuites for GRMHD sector of GRHydro even though it's currently in rapid and constant development. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/896> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1225: GRHydro_UpdateMask takes too long to compile
by Einstein Toolkit 24 Nov '13

24 Nov '13

#1225: GRHydro_UpdateMask takes too long to compile -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- GRHydro_UpdateMask takes more than an hour to compile. This is with Intel Version 12.1.1.256 Build 20111011 on a modern workstation Intel(R) Xeon(R) CPU X5675 @ 3.07GHz: 11110 eschnett 32 12 251m 206m 14m R 100 0.9 68:29.24 fortcom Could we simplify the source code, e.g. moving the pointer assignments and the actual loops into different files? -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1225> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #392: Strange message "already on master"
by Einstein Toolkit 07 Nov '13

07 Nov '13

#392: Strange message "already on master" ---------------------------+------------------------------------------------ Reporter: eschnett | Owner: eric9 Type: defect | Status: new Priority: minor | Milestone: Component: GetComponents | Version: Keywords: | ---------------------------+------------------------------------------------ GetComponents outputs "already on master" for every git repository. This message should not appear. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/392> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1009: MPI is not automatically detected on Mac OS
by Einstein Toolkit 05 Nov '13

05 Nov '13

#1009: MPI is not automatically detected on Mac OS -----------------------------------+---------------------------------------- Reporter: hinder | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- There is logic in ExternalLibraries/MPI/configure.sh to automatically detect the location of MPI. This code looks for $X/lib/libmpi.a and $X/include/mpi.h for various values of X. This is not a robust way to locate MPI because libmpi.a is not the correct filename on Mac OS. We could make a special case for Mac OS and use ".dylib" instead of ".a", or we could remove the library file from the test, and rely on the header file alone. I prefer the latter. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1009> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #626: Recovery fails in AHFinderDirect RecoverML with out-of-bounds assertion in CarpetLib
by Einstein Toolkit 28 Oct '13

28 Oct '13

#626: Recovery fails in AHFinderDirect RecoverML with out-of-bounds assertion in CarpetLib --------------------+------------------------------------------------------- Reporter: rhaas | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: ET_2011_10 Component: Carpet | Version: Keywords: | --------------------+------------------------------------------------------- when trying to recover in AHFinderDirect's RecoverML test (parfiles attached) I get: {{{ cactus_et: /home/rhaas/ET_2011_10/arrangements/Carpet/CarpetLib/src/th.hh:79: double th::get_time(int, int, int) const: Assertion `tl>=0 and tl<timelevels' failed. }}} After some debuggin I traced this down to the metric which in CarpetIOHDF5/src/Input.cc:762 is reported (by gf->timelevels (ml, rl)) to have three timelevels. However the timelevels member of gf->t (a th) gives the number of timelevels as two {{{ gf->t.timelevels $28 = 2 }}} Since timelevels is new in Carpet/Hg my suspicion would be that it is not properly updated when gf->set_timelevels is called (the comments in th.hh seem to indicated that it is assumed to be const which seems odd given that ggf::set_timelevels exists). I don't understand enough of Carpet to fix or further debug this. Marking its as major and release relevant in case it is actually a Carpet bug. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/626> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1251: Use Parsing Expression Grammar for Par Files
by Einstein Toolkit 28 Oct '13

28 Oct '13

#1251: Use Parsing Expression Grammar for Par Files -------------------------+-------------------------------------------------- Reporter: sbrandt | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Other | Version: Keywords: | -------------------------+-------------------------------------------------- Piraha is a parsing framework/library based on Parsing Expression Grammars (PEGs). This allows you to define the grammar of a language using a simple regular-expression-type language, and Piraha will use this to decode an input file into a hierarchical data structure of the parsed data (a "parse tree"). See http://code.google.com/p/piraha-peg/, http://en.wikipedia.org/wiki/Parsing_expression_grammar. I've hacked a version of Cactus to use Piraha for parameter parsing. Please take a look: https://svn.cactuscode.org/flesh/branches/with_piraha This version is able to run the ET testsuite. This version can understand the variables $parfile, $ENV{name}, and $pi (which is 3.14...). Variables can be standalone, or be substituted from inside strings. It can understand mathematical expressions including grouping, order of operation, and a few functions (sin, cos, tan, exp, sqrt). Other parameters from the parameter file are available for use in mathematical expressions. Some debug printing is in place so you can get an idea of what's going on. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1251> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1066: Implement IMEX integrators in MoL
by Einstein Toolkit 25 Oct '13

25 Oct '13

#1066: Implement IMEX integrators in MoL -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- Dana Alic contributed an implementation of IMEX integrators for MoL. I attach the implementation as a patch (based on r133 of MoL). The implementation is well tested. The patch does not apply cleanly, and seems to make some modifications to the schedule etc. as well that have since been superseded by other changes to MoL. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1066> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #652: CACTUS_CONFIGS_DIR should be documented
by Einstein Toolkit 23 Oct '13

23 Oct '13

#652: CACTUS_CONFIGS_DIR should be documented -------------------------+-------------------------------------------------- Reporter: knarf | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- At the moment CACTUS_CONFIGS_DIR is only mentioned in doc/FAQ. It should be documented in the regular documentation as well. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/652> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #963: Improve McLachlan accuracy
by Einstein Toolkit 15 Oct '13

15 Oct '13

#963: Improve McLachlan accuracy -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- James van Meter provided me with an optimised version of McLachlan. He states: 1. You are not taking full advantage of the chi=exp(-2phi) variable. There are several terms you divide by chi or chi^2 in expressions with overall factors exp(-4phi). I rewrote the BSSN equations to make these cancellations before coding. So where you have an expression of the form chi^2(A+B/chi^2), I have chi^2A+B. This gives a slight but noticeable advantage in both accuracy and performance. 2. I added Hamiltonian-constraint-damping terms due to Duez et al. These terms don't seem to be well-known but they are effective. 3. I added a Gamma-constraint-damping term due to Yo et al. 4. I enforce det(g)=1. I have not tested this new version yet, but James suggests to include it into the Einstein Toolkit. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/963> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac April 2013