Trac February 2012

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[Einstein Toolkit] #543: Change diff format in GetDomponents
by Einstein Toolkit 05 Feb '12

05 Feb '12

#543: Change diff format in GetDomponents ---------------------------+------------------------------------------------ Reporter: eschnett | Owner: eric9 Type: enhancement | Status: new Priority: major | Milestone: Component: GetComponents | Version: Keywords: | ---------------------------+------------------------------------------------ It would be convenient to change the format of GetComponent's --diff command to output diffs that can be directly applied via "patch -p0" from the main Cactus directory. That is, file names such as "a/Tools/CodeGen/Schedule.m" should be changed to "repos/Kranc/Tools/CodeGen/Schedule.m". -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/543> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #734: McLachlan triggers arithmetic exception (but results are fine)
by Einstein Toolkit 05 Feb '12

05 Feb '12

#734: McLachlan triggers arithmetic exception (but results are fine) -----------------------------------------+---------------------------------- Reporter: wolfgang.kastaun@… | Type: defect Status: new | Priority: minor Milestone: | Component: Other Version: | Keywords: McLachlan -----------------------------------------+---------------------------------- If I enable floating point exceptions for debugging purposes, they are triggered by McLachlan in the routine ML_BSSN_convertToADMBaseDtLapseShift_Body. The guilty line is 568 kfmin(ToReal(1),kmul(INV(rL),ToReal(SpatialBetaDriverRadius))); the involved values are (gdb) p rL $1 = 0 (gdb) p SpatialBetaDriverRadius $2 = 1000000000000 This only happens once per grid, apparently at the origin. The results look fine otherwise, no NaNs or INFs propagated, but this is annoying when debugging other code, trying to find the first time a NaN is produced. ET version is the Maxwell release. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/734> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #666: have CarpetIOScalar output grid scalar directly rather than applying reductions to them
by Einstein Toolkit 05 Feb '12

05 Feb '12

#666: have CarpetIOScalar output grid scalar directly rather than applying reductions to them -------------------------+-------------------------------------------------- Reporter: rhaas | Owner: eschnett Type: enhancement | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: | -------------------------+-------------------------------------------------- Carpet already assumes that these grid scalars have the same value on all processors. So reducing them does not generate any information that is not already present by just looking at a single value. The attached patch outputs grid scalars (from the root processor) directly, this means that grid scalar output files can be used to output timeseries like grid scalars (which is what many are). The attached parfile and data files are a modfied version of a QLM test. Notice how much nicer to read the scalar output *.scalar.asc is then the 0D output *..asc. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/666> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #744: Define API for finding out which MPI processes share a host
by Einstein Toolkit 05 Feb '12

05 Feb '12

#744: Define API for finding out which MPI processes share a host -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: Keywords: | -------------------------+-------------------------------------------------- This API could be a flesh API, provided by the driver, or could be implemented via aliased functions. For example: int CCTK_nHosts(cGH*) int CCTK_MyHost(cGH*) Probably also functions for mapping: process <-> (host, hostprocess) host -> (list of processes) -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/744> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #749: provide funtion fasterp_setup_t::outofdate()
by Einstein Toolkit 04 Feb '12

04 Feb '12

#749: provide funtion fasterp_setup_t::outofdate() -------------------------+-------------------------------------------------- Reporter: rhaas | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Other | Version: Keywords: | -------------------------+-------------------------------------------------- CarpetInterp2 tests if a fasterp_setup_t object is out of date (older than the current regridding epoch) before it uses it. It would be useful to export this test to user code so that they can check each time they want to interpolate if they have to re-create the setup object. the attached (trivial) patch does so. It has the advantage of hiding the internal decision criterion from the user. Better names welcome. Will apply on Monday unless there are objections. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/749> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #682: LSUThorns/Vectors: Simplify API for partial vector stores
by Einstein Toolkit 04 Feb '12

04 Feb '12

#682: LSUThorns/Vectors: Simplify API for partial vector stores -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Other | Version: Keywords: | -------------------------+-------------------------------------------------- Implement vec_store_nta_partial, which offers a simpler interface, similar to the one used in OpenCL. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/682> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #680: Add kifneg function
by Einstein Toolkit 04 Feb '12

04 Feb '12

#680: Add kifneg function -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: Keywords: | -----------------------------------+---------------------------------------- Add an kifneg function that does the opposite of kifpos, because kifneg is more natural (in the same sense as "ifnotzero" is natural in C.) Incidentally, it should probably be renamed "ifmsb" instead, because it can also be applied to unsigned quantities which don't have a sign bit. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/680> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #746: new flesh APIs
by Einstein Toolkit 02 Feb '12

02 Feb '12

#746: new flesh APIs -------------------------+-------------------------------------------------- Reporter: jtao | Owner: Type: enhancement | Status: new Priority: major | Milestone: Cactus_4.1.0 Component: Cactus | Version: development version Keywords: | -------------------------+-------------------------------------------------- To support parallel programming on heterogeneous systems, it will be convenient to have the following APIs provided via flesh. These APIs will be helpful for properly handling the matching between devices (e.g. GPUs) and MPI processes. // return a unique id for the local host; int CCTK_MyHost(cGH *cctkGH); // return total number of nodes; int CCTK_nHosts(cGH *cctkGH); // return number of mpi processes on a given host int CCTK_nProcsOnHost(const int host); // return a list of process on a given host void CCTK_ProcsOnHost(const int host, int *procs); Regards, Jian -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/746> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #742: Let OpenCL print available platform and device info on startup
by Einstein Toolkit 31 Jan '12

31 Jan '12

#742: Let OpenCL print available platform and device info on startup -------------------------+-------------------------------------------------- Reporter: knarf | Owner: Type: enhancement | Status: new Priority: minor | Milestone: ET_2012_05 Component: Cactus | Version: development version Keywords: | -------------------------+-------------------------------------------------- This patch lets the OpenCL thorn print information about available platforms and devices on startup. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/742> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #743: CarpetIOHDF5 should use c++ compiler options for c++ compiler
by Einstein Toolkit 31 Jan '12

31 Jan '12

#743: CarpetIOHDF5 should use c++ compiler options for c++ compiler -------------------------+-------------------------------------------------- Reporter: knarf | Owner: eschnett Type: enhancement | Status: new Priority: minor | Milestone: ET_2012_05 Component: Carpet | Version: development version Keywords: | -------------------------+-------------------------------------------------- Currently CarpetIOHDF5 uses the c compiler options with the c++ compiler to build the utilities. This can lead to warnings about flags not supported by c++ (only by c). The attached patch let's it use the c++ compiler options instead. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/743> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac February 2012