Trac January 2014

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145 discussions

[Einstein Toolkit] #1158: ExternalLibraries/HDF5 should change the defaults for HDF5_ENABLE_CXX and HDF5_ENABLE_FORTRAN to "no".
by Einstein Toolkit 13 Oct '14

13 Oct '14

#1158: ExternalLibraries/HDF5 should change the defaults for HDF5_ENABLE_CXX and HDF5_ENABLE_FORTRAN to "no". -----------------------------------+---------------------------------------- Reporter: knarf | Owner: Type: defect | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- ExternalLibraries/HDF5 should change the defaults for HDF5_ENABLE_CXX and HDF5_ENABLE_FORTRAN to "no". Nothing within the toolkit or Cactus still uses these interfaces and system wide installed libraries might not come with it, leading to link failures. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1158> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1388: New thorn MemSpeed
by Einstein Toolkit 02 Oct '14

02 Oct '14

#1388: New thorn MemSpeed -----------------------------------+---------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: new Priority: major | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- I have written a thorn MemSpeed, available at <https://svn.einsteintoolkit.org/incoming/MemSpeed>. This thorn is useful for performance tuning. I propose to add it to CactusUtils. From the README: Determine the speed of the CPU, as well as latencies and bandwidths of caches and main memory. These provides ideal, but real-world values against which the performance of other routines can be compared. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1388> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1517: Make Simfactory tell you what it's doing
by Einstein Toolkit 29 Sep '14

29 Sep '14

#1517: Make Simfactory tell you what it's doing -------------------------+-------------------------------------------------- Reporter: sbrandt | Owner: eschnett Type: enhancement | Status: new Priority: optional | Milestone: Cactus_4.3.0 Component: SimFactory | Version: development version Keywords: | -------------------------+-------------------------------------------------- Sometimes I'd like to know what shell commands Simfactory is running. This patch causes Simfactory to print out messages of the form "COMMAND: ...." when the --verbose flag is set. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1517> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[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

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[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

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[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

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[Einstein Toolkit] #1409: cleanup Avec in HydroBase
by Einstein Toolkit 02 Jun '14

02 Jun '14

#1409: cleanup Avec in HydroBase -----------------------------------+---------------------------------------- Reporter: knarf | Owner: Type: task | Status: new Priority: major | Milestone: ET_2013_11 Component: EinsteinToolkit thorn | Version: development version Keywords: | -----------------------------------+---------------------------------------- As discussed at the dev-workshop in summer 2013, Avec shouldn't be defined in HydroBase, but move to the evolution thorn. In particular, the current dev-version of HydroBase contains (will in a few hours) contain two different versions of it, depending on where it is defined. The needs to be cleaned up before the next release. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1409> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1210: CarpetIOASCII should not write column names info each iteration
by Einstein Toolkit 01 Jun '14

01 Jun '14

#1210: CarpetIOASCII should not write column names info each iteration --------------------+------------------------------------------------------- Reporter: knarf | Owner: eschnett Type: defect | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: | --------------------+------------------------------------------------------- Currently, CarpetIOASCII writes the column names header each iteration, leading to bloated output - easily double the size of what should suffice. Once after file creation would be much better. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1210> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1399: add evolution method "stationary" to ADMBase
by Einstein Toolkit 27 May '14

27 May '14

#1399: add evolution method "stationary" to ADMBase -----------------------------------+---------------------------------------- Reporter: rhaas | Owner: Type: enhancement | Status: new Priority: minor | Milestone: Component: EinsteinToolkit thorn | Version: development version Keywords: ADMBase | -----------------------------------+---------------------------------------- This method is similar to "static" in that it can be used for Cowling runs, it differs from "static" in that it schedules the initial data routine after any grid changes and does not apply boundary conditions or SYNC calls. It can thus be used if one can compute the required metric/shift/lapse easily in a pointwise manner and would like to have exact (non-prolongated) data in the buffer zones. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1399> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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[Einstein Toolkit] #1302: Reduce time spent in deciding not to do output.
by Einstein Toolkit 21 May '14

21 May '14

#1302: Reduce time spent in deciding not to do output. --------------------------------------+------------------------------------- Reporter: diener | Owner: eschnett Type: enhancement | Status: new Priority: major | Milestone: Component: Carpet | Version: development version Keywords: performance optimization | --------------------------------------+------------------------------------- I noticed, during some scaling tests, that for my code a significant amount of time was spent by CarpetIOASCII, even though I only had it activated and didn't actually request any output. The reason is that in order to figure out whether to do output or not, there is a loop over all grid variables and a routine (TimeToOutput) is called. In this routine there is a check if the out_dir and out_vars parameters have been steered and if so update some internal data structures. It should be sufficient to do this before entering the loop over grid variables. The same issue is present in CarpetIOScalar and CarpetIOHDF5. The attached patches for CarpetIOASCII, CarpetIOScalar and CarpetIOHDF5 moves this check outside of the loop over grid variables and in addition bypasses the loop completely if the out_vars parameter string is the empty string. Note that the code where I noticed this problem uses large vectors of 1D grid arrays, and it turns out that Cactus counts each vector element as a distinct grid variables and the length of the loop over grid variables in my case was close to 100.000, which might explain why nobody has noticed this before. -- Ticket URL: <https://trac.einsteintoolkit.org/ticket/1302> Einstein Toolkit <http://einsteintoolkit.org> The Einstein Toolkit

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Trac January 2014