Trac June 2014

trac@lists.einsteintoolkit.org

1 participants
124 discussions

[Einstein Toolkit] #1483: speed up reading metadata of HDF5 files in visit
by Einstein Toolkit 15 Sep '14

15 Sep '14

#1483: speed up reading metadata of HDF5 files in visit -------------------------+-------------------------------------------------- Reporter: rhaas | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: Other | Version: development version Keywords: CarpetHDF5 | -------------------------+-------------------------------------------------- The attached patch tries to extract as much information about a dataset from the dataset name as possible. Since accessing attributes is slow but the dataset name comes for free this speeds up opening HDF5 files in VisIt drastically (I had a factor of 6 when I measured it quite a while ago). This is certainly not the nicest way of parsing the string, one could think of sequentially looking for "name=value" constructs in the string and acting based on the name rather than just matching against all possible options. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1483> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 9

[Einstein Toolkit] #1575: Declare cctkGH as "const cGH*"
by Einstein Toolkit 05 Sep '14

05 Sep '14

#1575: Declare cctkGH as "const cGH*" -------------------------+-------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: development version Keywords: | -------------------------+-------------------------------------------------- cctkGH is declared as "const cGH*" in several places, but DECLARE_CCTK_ARGUMENTS still declares it only as "cGH*". This should be changed. I checked, and some thorns need updating to deal with this. I propose to make this change after the release. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1575> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 6

[Einstein Toolkit] #1633: backport MoL revision 225
by Einstein Toolkit 26 Aug '14

26 Aug '14

#1633: backport MoL revision 225 --------------------------+------------------------------------------------- Reporter: rhaas | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: Other | Version: development version Keywords: MoL backport | --------------------------+------------------------------------------------- Before MoL did not initialize the RHS grid functions of the slow evolved variables to zero (but GRHydro did explicitly so this never showed up). Revision 225 adds the initialization. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1633> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 11

[Einstein Toolkit] #499: Prolongation fails with vectorisation enabled
by Einstein Toolkit 25 Aug '14

25 Aug '14

#499: Prolongation fails with vectorisation enabled --------------------+------------------------------------------------------- Reporter: hinder | Owner: eschnett Type: defect | Status: new Priority: major | Milestone: Component: Carpet | Version: Keywords: | --------------------+------------------------------------------------------- The development version of Carpet uses vectorisation to speed-up prolongation. This fails with various errors, including corruption of the malloc heap. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/499> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 23

[Einstein Toolkit] #445: Make Carpet timers hierarchical
by Einstein Toolkit 25 Aug '14

25 Aug '14

#445: Make Carpet timers hierarchical -------------------------+-------------------------------------------------- Reporter: hinder | Owner: eschnett Type: enhancement | Status: new Priority: major | Milestone: Component: Carpet | Version: Keywords: | -------------------------+-------------------------------------------------- With the current flat structure of timers in Carpet, it is difficult to identify which timers are contained in which other timers, and hence to avoid double-counting when adding up the times. This series of patches modifies the timer infrastructure in Carpet to generate a tree of timers where the hierarchy reflects the call-graph of the program. This makes it much easier to interpret the timer output than with the previous flat structure, where it was not possible to see which timers "contained" which others. More implementation details are given at the top of TimerNode.hh. Note that the Timer source and header files have been renamed as CactusTimer and a new Timer file and object has been created. This is because the Timer object now only provides a wrapper around the Cactus timer mechanism which was contained in the old Timer object. New parameters output_initialise_timer_tree and output_timer_tree_every control output of a new "timer tree diagram" to standard output for the Initialise and Evolve timer trees respectively. These diagrams indicate: 1. the value of each timer; 2. the percentage of the given tree taken by each timer; 3. which timers are contained in which other timers; 4. any untimed code for any timer which takes more than 1% of the tree time. Making the timers hierarchical means that the ad-hoc methods used before to identify the hierarchy (such as naming the timer Evolve::Sync, for example, to indicate that the Sync timer was a child of the Evolve timer) are no longer necessary and have been removed. Additionally, the construction of timers in a "dynamic" manner is now handled automatically for all timers, so special-case code is no longer needed and has been removed. Additionally some previously-untimed parts of the code are now timed, and timer names have been made more consistent in some places. There is code in the patches to output the entire timer tree as an XML file, but it is not enabled. Ideally the timer tree printed to standard output would contain reductions across processes, but at the moment it contains only the timer from the current process. The attached "tree-example.txt" file shows an example of the timer tree that is printed for a simulation using the qc0-mclachlan parameter file from the Einstein Toolkit. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/445> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 13

[Einstein Toolkit] #1618: Compile with adaptive MPI (based on Charm++)
by Einstein Toolkit 18 Aug '14

18 Aug '14

#1618: Compile with adaptive MPI (based on Charm++) ------------------------------+--------------------------------------------- Reporter: jtao@… | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: Cactus | Version: development version Keywords: | ------------------------------+--------------------------------------------- Gengbin Zheng, one of the leading developer of the Charm++ and I managed to get Cactus compile against the AMPI (http://charm.cs.illinois.edu/research/ampi). The patch against Revsion 5120 is attached. The major changes are in the flesh to deal with global variables. We started with PUGH to get started and changes in Carpet could be done later on. NR applications might not benefit from this work though this effort could make Cactus appealing to many other applications as a computational framework. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1618> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 12

[Einstein Toolkit] #1634: CUDA breaks CCTK_BUILTIN_UNREACHABLE
by Einstein Toolkit 18 Jun '14

18 Jun '14

#1634: CUDA breaks CCTK_BUILTIN_UNREACHABLE ---------------------+------------------------------------------------------ Reporter: sbrandt | Owner: Type: defect | Status: new Priority: minor | Milestone: Cactus_4.3.0 Component: Other | Version: development version Keywords: | ---------------------+------------------------------------------------------ Code containing CCTK_BUILTIN_UNREACHABLE does not compile with CUDA. In fact, there seems to be problems with calling abort() from CUDA as well. The attached patch allows compilation to proceed, but I suspect it will be hated. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1634> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 5

[Einstein Toolkit] #1629: Use DANE for server certificates
by Einstein Toolkit 16 Jun '14

16 Jun '14

#1629: Use DANE for server certificates -------------------------------------+-------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: optional | Milestone: Component: EinsteinToolkit website | Version: development version Keywords: | -------------------------------------+-------------------------------------- If I understand correctly, DANE (<http://www.heise.de/newsticker/meldung /DANE-Bund-sichert-nach-Mail-Transport-auch-Webservice-mittels-DANE- ab-2215929.html>, <http://en.wikipedia.org/wiki/DNS- based_Authentication_of_Named_Entities>) would allow server owners to publish their certificates with their DNS entries. This could -- if I understand correctly -- replace the need for having certificates signed by a CA, which is always expensive and cumbersome. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1629> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 2

[Einstein Toolkit] #1608: ScalarWave thorn build error on Stampede
by Einstein Toolkit 11 Jun '14

11 Jun '14

#1608: ScalarWave thorn build error on Stampede --------------------------------------------+------------------------------- Reporter: jonah.maxwell.miller@… | Owner: Type: defect | Status: new Priority: optional | Milestone: ET_2014_05 Component: EinsteinToolkit thorn | Version: development version Keywords: ScalarWave,OpenMP | --------------------------------------------+------------------------------- When I try to compile the Einstein toolkit on stampede, I get a series of errors relating to OpenMP loops. Each error is of the form: {{{ must have a loop-invariant increment of integer, pointer, or random access iterator type for (int tk = tiled_imin[2]; tk < tiled_imax[2]; tk += tile_size_l[2]) }}} The error is definitely in the ScalarWave thorn, because disabling this thorn allows the toolkit to compile just fine. Attached are the thornlist used and the error output. The command I used to compile was {{{ sim build dgfe2 --thornlist=dgfe2_jm.th }}} -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1608> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 4

[Einstein Toolkit] #1619: New example thorns for CUDA and OpenCL
by Einstein Toolkit 11 Jun '14

11 Jun '14

#1619: New example thorns for CUDA and OpenCL -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- I created two simple example programs for CUDA and OpenCL. These are located in the svn repositories at https://svn.cactuscode.org/arrangements/CactusExamples/HelloWorldCUDA https://svn.cactuscode.org/arrangements/CactusExamples/HelloWorldOpenCL I want to add them to the Einstein Toolkit. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1619> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

1 3

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

Trac June 2014