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* Revert "CarpetLib: make electric_fence parameter restricted"Roland Haas2013-10-31
| | | | | | | This reverts commit be2bd96c56aa6dd5b1fb6654b130f3e44e049e8e. Sharing parameters between CarpetLib and Carpet can apparantly cause problems.
* CarpetLib: make electric_fence parameter restrictedRoland Haas2013-10-11
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* CarpetLib: add some code for electric fence like functionalityRoland Haas2013-09-27
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* CarpetLib: New parameter use_loopcontrol_in_operatorsErik Schnetter2013-07-27
| | | | When this parameters is set, then (some) prolongation/restriction operators are parallelized via LoopControl instead of in dh.cc.
* CarpetLib: Set interpolate_from_buffer_zones to "no" by defaultErik Schnetter2013-02-18
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* Revert "CarpetLib: Change default to interpolate_from_buffer_zones=no"Erik Schnetter2013-02-12
| | | | This reverts commit c290150324c2dd50e98cd6e35bbcd733e6f3b5a4.
* CarpetLib: Change default to interpolate_from_buffer_zones=noErik Schnetter2013-02-08
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* CarpetLib: Rewrite array paddingErik Schnetter2013-01-16
| | | | | Obtain cache information from thorn hwloc. Align allocated memory manually if operator new returns unaligned memory.
* Allow padding in transport operatorsErik Schnetter2012-11-22
| | | | | Rewrite padding infrastructure. Add padded array extents to transport operator APIs.
* CarpetLib: Clean up backtrace generationErik Schnetter2012-09-18
| | | | Also add test parameter file.
* CarpetLib: Do not interpolate from buffer zones, if requestedErik Schnetter2012-09-16
| | | | Introduce parameter CarpetLib::interpolate_from_buffer_zones that allows disabling interpolation from buffer zones.
* CarpetLib: make parameters controlling restrition order restrictedRoland Haas2012-09-11
| | | | this is so that Carpet can see them when checking the ghost sizes
* CarpetLib: add fifth order cc restriction operatorRoland Haas2012-09-11
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* CarpetLib: clean up higher order restriciton someRoland Haas2012-09-11
| | | | | | | | | * rename controlling parameter to use_higher_order_restriction * introduce parameter restriction_order_space to control which operator is used (currently order 1 and 3 are suppoted) * include some comments on what the operator does * change the way the restrictable region is computed in dh.cc/regrid to be based on exterior.shrink(stencil_width) rather that the interior
* CarpetLib: add preliminary support for higher order restrictionRoland Haas2012-09-11
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* CarpetLib: Add preliminary support for DGFE operatorsErik Schnetter2012-09-11
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* CarpetLib: Correct ranges of parameter print_memstats_everyErik Schnetter2011-12-14
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* CarpetLib: New parameter use_ipm_timing_regionsErik Schnetter2011-12-14
| | | | Use IPM's timing regions in CarpetLib's timers (if built with IPM).
* CarpetLib: Implement padding for grid variablesErik Schnetter2011-12-14
| | | | | | | | | Ignore-this: 1a389f0dd3f40a0c0edb3fdabd6e7d40 Padding grid variables means that e.g. a component of size 32x32x32 is allocated as 33x33x33 instead, but only 32x32x32 of this storage is used. This can improve cache performance considerably. This requires corresponding changes to the cGH entries.
* Import CarpetErik Schnetter2011-12-14
| | | | Ignore-this: 309b4dd613f4af2b84aa5d6743fdb6b3
* CarpetLib: Add new parameter combine_recomposeErik Schnetter2008-07-15
| | | | | | | combine_recompose recomposes all grid functions at once. This increases memory usage, but combines the communications and may thus also increase the speed. The default behaviour is unchanged, recomposing all grid functions sequentially.
* CarpetLib: Correct memory leak in commstate classErik Schnetter2008-03-01
| | | | | | Correct a memory leak and simplify the code in the commstate class by using C++ datatypes instead of new and delete. Add many assert statements to catch potential problems.
* CarpetLib: Use timing routines from FFTW libraryErik Schnetter2008-01-14
| | | | | | | | | | Use the timing routines from FFTW library. These contain platform-specific code for many different platforms. Remove parameter timestat_timer, since the timer is now chosen automatically. darcs-hash:20080114150519-dae7b-d979aa53a1470335b3ace353e862eef13670958d.gz
* CarpetLib: Set number of OpenMP threads via an external function callErik Schnetter2008-01-14
| | | | | | | Set the number of OpenMP threads via an external function call instead of via a CarpetLib parameter. darcs-hash:20080114150439-dae7b-a6a6a629162ca195411852823e1ece0a2071d771.gz
* CarpetLib: Add support for OpenMPErik Schnetter2007-08-21
| | | | | | | | | | | Add #pragma omp statements for loops in reduction and prolongation operators. Change loop control variables to signed types. Add functions to determine the number of active threads. Add a parameter to set the number of threads if desired. darcs-hash:20070821185237-dae7b-56827b72a69b5fa1b3d1316379a0f155696b4cb2.gz
* CarpetLib: Remove old parametersErik Schnetter2007-04-19
| | | | darcs-hash:20070419013528-dae7b-09f603af91ed987e74f3cb67d417b9745e4070b6.gz
* CarpetLib: Simplify timer interfaceErik Schnetter2007-03-12
| | | | | | | | | | | Remove some parameters which are not necessary: CarpetLib::print_timestats CarpetLib::timestat_disable Allow the value -1 as well as 0 to disable output for timers and memory statistics. darcs-hash:20070312160854-dae7b-6c60bf0c64a5cac03da97595bb30bb2b47568165.gz
* CarpetLib: Add rtc timer on AIXErik Schnetter2007-03-06
| | | | darcs-hash:20070306011837-dae7b-600bdffcf60d6dff9386180543c3dc7ecf9f4028.gz
* CarpetLib: Optimise dh class furtherErik Schnetter2007-03-04
| | | | | | | | | | | Reduce the number of bbox operations while setting up the communication schedule. Cache some results. Introduce timers throughout. Introduce a parameter CarpetLib::check_bboxes, defaulting to "yes", which can be used to disable the self-checks. darcs-hash:20070304210744-dae7b-1a2756dc0aa2f30b2f1311a9475c2a35513f2cfc.gz
* CarpetLib: Use rdtsc instead of MPI_Wtime as default timerErik Schnetter2007-02-04
| | | | darcs-hash:20070204212619-dae7b-f68201db57954ecac2ed7d77dcac9c43f267af64.gz
* CarpetLib: Improve timersErik Schnetter2007-02-03
| | | | | | | | | | | | Implement a second timer based on Intel's rdtsc instruction, which is much faster and much more accurate than MPI_Wtime. Place the timer classes into the CarpetLib namespace. Create a TimerSet class. Make the Timer class automatically register all timers with a singleton object, removing all global variables. darcs-hash:20070203211128-dae7b-42765e79446eda6a2337ba22cd390869055c555a.gz
* CarpetLib: Reorganise prolongation and restriction operatorsErik Schnetter2007-01-12
| | | | | | | | | | | | | | | | | | | | | | | | Reorganise prolongation and restriction operators. This is a major implementation change. Most operators are now written as C++ templates instead of as Fortran 77 code. This simplifies the code, since C++ routines can be called more easily, and they also have access to CarpetLib's high-level data structures. Previously, the operators combined temporal and spatial interpolation. Now, time interpolation and space interpolation are handled separately. This may be less efficient, but simplifies the code significantly, since there are now N+M instead of N*M routines, for N time interpolation and M space interpolation methods. Remove the minmod prolongation operator, which was previously disabled. Add support for cell centering, using a method described by Simon Hern, and suggested for Carpet by Ian Hawke. darcs-hash:20070112205812-dae7b-5329795aa698e7bbc3671b1504134885dd830238.gz
* CarpetLib: Make many MPI experiments configurableErik Schnetter2006-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new parameters: BOOLEAN interleave_communications: Try to interleave communications with each other; each processor begins to communicate with its 'right neighbour' in rank, instead of with the root processor BOOLEAN vary_tags: Use different tags for each communication BOOLEAN barrier_between_stages: Add a barrier between the communication stages (slows down, but may make timing numbers easier to interpret) BOOLEAN combine_sends: Send data together and in order of processor ranks BOOLEAN reduce_mpi_waitall: Call MPI_Waitall only for requests that are not null BOOLEAN use_mpi_send: Use MPI_Send instead of MPI_Isend BOOLEAN use_mpi_ssend: Use MPI_Ssend instead of MPI_Isend darcs-hash:20061206165333-dae7b-8ba40bd19fb1733336e60cb7e6bfa0ebfe0d546d.gz
* CarpetLib: Write timer output to filesErik Schnetter2006-09-11
| | | | | | | | Write the CarpetLib timer output to files instead of to screen; the output is lengthy, difficult to interpret, and output from all processors is needed. darcs-hash:20060911025609-dae7b-c1d812ae44dfdb3f8e8daae09f06a8ed3476e73f.gz
* CarpetLib: Split recompose functions into regrid and recomposeErik Schnetter2006-09-04
| | | | | | | | | | | | | | | Split recompose functions into two stages, regrid and recompose. The first stage, regrid, changes the grid structure in the gh and dh classes. The second stage, recompose, changes the values of the actual grid functions, i.e., changes the gf<T> and data<T> objects. The second stage has to be called individually for every refinement level. This is necessary since the boundary conditions need to be applied after recomposing one refinement level, before the next fine refinement level can be recomposed. darcs-hash:20060904230433-dae7b-3ba1982460f57b34da11a6fbb6b4b524dc5b348f.gz
* CarpetLib: Extend timing statisticsErik Schnetter2006-07-31
| | | | | | | | | | Add timers for the new communication infrastructure. Enhance the timers to also track the minimum and maximum time spent. Add a parameter to output timing information to files. darcs-hash:20060731152618-dae7b-1d049b2b37397610c14648078fd0ee92f252ca2a.gz
* CarpetLib: Rename default memory statistics fileErik Schnetter2006-07-31
| | | | darcs-hash:20060731152547-dae7b-c56f2acaf72d2d21d2e4bdee00691866568af6fc.gz
* CarpetLib: Poison newly allocated memory if desiredErik Schnetter2006-07-31
| | | | | | | | | Poison newly allocated memory if desired. This is potentially more thorough that Carpet's poisoning, since it is applied to all allocated memory. It is not applied after time level cycling, though, so it cannot replace Carpet's poisoning. darcs-hash:20060731152325-dae7b-d039ee958161690c9430e70a8051d400273b819e.gz
* CarpetLib: Correct grammatical error in parameter descriptionErik Schnetter2006-07-31
| | | | darcs-hash:20060731151302-dae7b-555810bfd094f8acb70b3dc90c2775ab84a20ef7.gz
* CarpetLib: Check for proper nestingErik Schnetter2006-05-08
| | | | darcs-hash:20060508154323-dae7b-30f14d75440c10774cd9f386bcfaca77fe3e704d.gz
* CarpetLib: Make omit_prolongation_points_when_restricting steerableErik Schnetter2006-05-08
| | | | darcs-hash:20060508154248-dae7b-a4d6c2b35d559cf0e61adae9f580905fa7771235.gz
* CarpetLib: Add boolean parameter "omit_prolongation_points_when_restricting"Erik Schnetter2006-05-03
| | | | | | | | | | | | | | Add a parameter "omit_prolongation_points_when_restricting" that controls whether to restrict to points that are used for boundary prolongation. The default is "no", restoring Carpet's behaviour from before the patch "CarpetLib: Do not restrict to points that are used for boundary prolongation". When set to yes, then there is still a logic error in the code on multiple processors, leading to different restriction regions on different numbers of processors. darcs-hash:20060503235940-dae7b-4c124e68e4c2519c0f97d416e0a7fa3489c1441d.gz
* CarpetLib: Mark more parameters as steerableErik Schnetter2006-02-08
| | | | darcs-hash:20060208233203-dae7b-c3837264ceeca33579afa2bfcb45c8d10803ac0e.gz
* CarpetLib: Output memory statistics to fileErik Schnetter2005-11-19
| | | | | | | Add new parameter CarpetLib::memstat_file. If set, then memory statistics are periodically written to this file. darcs-hash:20051119201538-dae7b-88c8b8cd5b9d2643d1be6e682f2aa32e7a00ef2d.gz
* CarpetLib: Implement fast recomposingErik Schnetter2005-08-11
| | | | | | | | For each refinement level that is to be recomposed, check whether it has the same structure as before, and if so, do nothing. This is controlled by a new flag CarpetLib::fast_recomposing. darcs-hash:20050811120347-891bb-f937c21ddeac7d909cae41d487e9fd74a5ce8cc8.gz
* CarpetLib: Change default settings for the communication tuning parametersErik Schnetter2005-08-08
| | | | | | | These default settings are now believed to be sensible and safe for everybody. darcs-hash:20050808132929-891bb-48231878e0a5ea02312823f4b96cad1c79fdba9f.gz
* CarpetLib: Output memory statistics, and limit maximum memory usageErik Schnetter2005-07-27
| | | | | | | | | | | | Introduce a new parameter print_memstats_every. When non-zero, output the current and total allocated amount of memory (per process). Introduce a new parameter max_allowed_memory_MB. When more than that amount should be allocated on the current processor, abort the run. Only memory for grid variables counts; memory for administrative overhead is ignored. darcs-hash:20050727201851-891bb-c1ff9fc30ff949d576d500fbf70ad7fb5084836a.gz
* CarpetLib: clean-up of communication scheme for individual sends/recvs on ↵Thomas Radke2005-05-26
| | | | | | | | | | | | | | | | | | | | single components The default communication scheme in Carpet (which does an individual send/recv operation for each component) comes with two parameters for fine tuning: CarpetLib::use_lightweight_buffers CarpetLib::combine_recv_send the defaults of which are set to use a well-tested but also slower communication pattern (as turned out during benchmark runs). This patch cleans up the implementation of this communication scheme so that the fastest communication pattern (combined posting of send/recv; use of lightweight buffers) is now always used. The above parameters therefore became obsolete and shouldn't be used anymore in parfiles. darcs-hash:20050526114253-776a0-780933a1539a260d74da8b92522fa2f48c714964.gz
* CarpetLib: change the default for CarpetLib::use_waitall from "no" to "yes"Thomas Radke2005-04-11
| | | | | | | | Using CarpetLib::use_waitall = "yes" seems to improve Carpet performance both for the standard and for the collective buffers communication scheme. So I made it the default. darcs-hash:20050411173355-776a0-a1046bde7c4ccb4eebc00765b4264701b012c8d8.gz
* Carpet/CarpetLib: deactivate CarpetLib::minimise_outstanding_communicationsThomas Radke2005-04-11
| | | | | | | | | | | | | | The code to minimise the number of outstanding communication requests is superseded by the collective buffers communication code. Therefore the corresponding parameter has been deactivated (but not removed in order to keep backwards compatibility with older checkpoints). It is marked as deprecated in the param.ccl file and should not be used anymore (use CarpetLib::use_collective_communication_buffers instead). A level-2 warning of that meaning is printed at startup if the parameter is still set in a user's parfile. darcs-hash:20050411155524-776a0-ed9919869cc1f2821ab8b2fa23b4abea203b72ed.gz
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