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Change Log / Release Log for PIConGPU

Open Beta RC6

Date: 2014-11-25

This is the 6th release candidate, a pre-beta version.

Initial "multiple species" support was added for flexible particles, but is yet still limited to two species. The checkpoint system was refactored and unified, also incooperating extreme high file I/O bandwidth with ADIOS 1.7+ support. The JetsonTK1 development kit (32bit ARM host side) is now experimentally supported by libPMacc/PIConGPU. The ZigZag current deposition scheme was implemented providing 40% to 50% speedup over our optimized Esirkepov implementation.

Changes to "Open Beta RC5"

.param file changes:

  • Restructured file output control (HDF5/ADIOS), new fileOutput.param #495
  • componentsConfig.param: particle pushers and current solvers moved to new files:
    • species.param: general definitions to change all species at once (pusher, current solver)
    • pusherConfig.param: special tweaks for individual particle pushers, forward declarations restructured
    • particleConfig.param: shapes moved to species.param, still defines initial momentum/temperature
    • speciesAttributes.param: defines unique attributes that can be used across all particle species
    • speciesDefinition.param: finally, assign common attributes from speciesAttributes.param and methods from species.param to define individual species, also defines a general compile time "list" of all available species
  • currentConfig.param: removed (contained only forward declarations)
  • particleDefinition.param: removed, now in speciesAttributes.param
  • laserConfig.param: new polarization/focus sections for plane wave and wave-packet: git diff --ignore-space-change beta-rc5..beta-rc6 src/picongpu/include/simulation_defines/param/laserConfig.param
  • memory.param: remove TILE_ globals and define general SuperCellSize and MappingDesc instead #435

.unitless file changes:

  • fileOutput.unitless: restructured and moved to fileOutput.param
  • checkpoint.unitless: removed some includes
  • currentConfig.unitless: removed
  • gasConfig.unitless: calculate 3D gas density (per volume) and 2D surface charge density (per area) #445
  • gridConfig.unitless: include changed
  • laserConfig.unitless: added ellipsoid for wave packet
  • physicalConstatns.unitless: GAS_DENSITY_NORMED fixed for 2D #445
  • pusherConfig.unitless: restructured, according to pusherConfig.param
  • memory.unitless: removed #435
  • particleDefinition.unitless: removed
  • speciesAttributes.unitless: added, contains traits to access species attributes (e.g., position)
  • speciesDefinition.unitless: added, contains traits to access quasi-fixed attributes (e.g., charge/mass)

New Features:

  • ZigZag current deposition scheme #436 #476
  • initial multi/generic particle species support #457 #474 #516
  • plugins
    • BinEnergy supports clean restarts without loosing old files #540
    • phase space now works in 2D3V, with arbitrary super cells and with multiple species #463 #470 #480
    • radiation: 2D support #527 #530
  • tools
    • splash2txt now supports ADIOS files #531 #545
  • plane wave & wave packet lasers support user-defined polarization #534 #535
  • wave packet lasers can be ellipses #434 #446
  • central restart file to store available checkpoints #455
  • libPMacc
    • added math::erf #525
    • experimental 32bit host-side support (JetsonTK1 dev kits) #571
    • CT::Vector refactored and new methods added #473
    • cuSTL: better 2D container support #461

Bug Fixes:

  • esirkepov + CIC current deposition could cause a deadlock in some situations #475
  • initialization for kernelSetDrift was broken (traversal of frame lists, CUDA 5.5+) #538 #539
  • the particleToField deposition (e.g. in FieldTmp solvers for analysis) forgot a small fraction of the particle #559
  • libPMacc
    • no static keyword for non-storage class functions/members (CUDA 6.5+) #483 #484
    • fix a game-of-life compile error #550
    • ParticleBox setAsLastFrame/setAsFirstFrame race condition (PIConGPU was not affected) #514
  • tools
    • tbg caused errors on empty variables, tabs, ampersands, comments #485 #488 #528 #529
  • dt/CFL ratio in stdout corrected #512
  • 2D live view: fix out-of-mem access #439 #452

Misc:

  • updated module examples and cfg files for:
    • hypnos (HZDR) #573 #575
    • taurus (ZIH/TUDD) #558
    • titan (ORNL) #489 #490 #492
  • Esirkepov register usage (stack frames) reduced #533
  • plugins
    • EnergyFields output refactored and clarified #447 #502
    • warnings fixed #479
    • ADIOS
      • upgraded to 1.7+ support #450 #494
      • meta attributes synchronized with HDF5 output #499
  • tools
    • splash2txt updates
      • requires libSplash 1.2.3+ #565
      • handle exceptions more transparently #556
      • fix listing of data sets #549 #555
      • fix warnings #553
    • BinEnergyPlot: refactored #542
    • memtest: warnings fixed #521
    • pic2xdmf: refactor XDMF output format #503 #504 #505 #506 #507 #508 #509
    • paraview config updated for hypnos #493
  • compile suite
    • reduce verbosity #467
    • remove virtual machine and add access-control list #456 #465
  • upgraded to ADIOS 1.7+ support #450 #494
  • boost 1.55.0 / nvcc <6.5 work around only applied for affected versions #560
  • boost::mkdir is now used where necessary to increase portability #460
  • libPMacc
    • ForEach refactored #427
    • plugins: notify() is now called before checkpoint() and a getter method was added to retrieve the last call's time step #541
    • DomainInfo and SubGrid refactored and redefined #416 #537
    • event system overhead reduced by 3-5% #536
    • warnings fixed #487 #515
    • cudaSetDeviceFlags: uses cudaDeviceScheduleSpin now #481 #482
    • __delete makro used more consequently #443
    • static asserts refactored and messages added #437
  • coding style / white space cleanups #520 #522 #519
  • git / GitHub / documentation
    • pyc (compiled python files) are now ignored #526
    • pull requests: description is mandatory #524
  • mallocMC cmake find_package module added #468

Open Beta RC5

Date: 2014-06-04

This is the 5th release candidate, a pre-beta version.

We rebuild our complete plugin and restart scheme, most of these changes are not backwards compatible and you will have to upgrade to libSplash 1.2+ for HDF5 output (this just means: you can not restart from a beta-rc4 checkpoint with this release).

HDF5 output with libSplash does not contain ghost/guard data any more. These information are just necessary for checkpoints (which are now separated from the regular output).

Changes to "Open Beta RC4"

.param file changes:

  • Added selection of optional window functions in radiationConfig.param #286
  • Added more window functions in radiationConfig.param #320
  • removed double #define __COHERENTINCOHERENTWEIGHTING__ 1 in some examples radiationConfig.param #323
  • new file: seed.param allows to vary the starting conditions of "identical" runs #353
  • Updated a huge amount of .param files to remove outdated comments #384
  • Update gasConfig.param/gasConfig.unitless and doc string in componentsConfig.param with new gasFromHdf5 profile #280

.unitless file changes:

  • update fileOutput.unitless and add new file checkpoints.unitless #387
  • update fieldSolver.unitless #314
  • Update radiationConfig.unitless: adjust to new supercell size naming #394
  • Corrected CFL criteria (to be less conservative) in gridConfig.unitless #371

New Features:

  • Radiation plugin: add optional window functions to reduce ringing effects caused by sharp boundaries #286 #323 #320
  • load gas profiles from png #280
  • restart mechanism rebuild #326 #375 #358 #387 #376 #417
  • new unified naming scheme for domain and window sizes/offsets #128 #334 #396 #403 #413 #421
  • base seed for binary idential simulations now exposed in seed.param #351 #353
  • particle kernels without "early returns" #359 #360
  • lowered memory foot print during shiftParticles #367
  • ShiftCoordinateSystem refactored #414
  • tools:
    • tbg warns about broken line continuations in tpl files #259
    • new CMake modules for: ADIOS, libSplash, PNGwriter #271 #304 #307 #308 #406
    • pic2xdmf
      • supports information tags #290 #294
      • one xdmf for grids and one for particles #318 #345
    • Vampir and Score-P support updated/added #293 #291 #399 #422
    • ParaView remote server description for Hypnos (HZDR) added #355 #397
  • plugins
    • former name: "modules" #283
    • completely refactored #287 #336 #342 #344
    • restart capabilites added (partially) #315 #326 #425
    • new 2D phase space analysis added (for 3D sims and one species at a time) #347 #364 #391 #407
    • libSplash 1.2+ upgrade (incompatible output to previous versions) #388 #402
  • libPMacc
    • new Environment class provides all singletons #254 #276 #404 #405
    • new particle traits, methods and flags #279 #306 #311 #314 #312
    • cuSTL ForEach on 1-3D data sets #335
    • cuSTL twistVectorAxes refactored #370
    • NumberOfExchanges replaced numberOfNeighbors implementation #362
    • new math functions: tan, float2int_rd (host) #374 #410
    • CT::Vector now supports ::shrink #392

Bug fixes:

  • CUDA 5.5 and 6.0 support was broken #401
  • command line argument parser messages were broken #281 #270 #309
  • avoid deadlock in computeCurrent, remove early returns #359
  • particles that move in the absorbing GUARD are now cleaned up #363
  • CFL criteria fixed (the old one was too conservative) #165 #371 #379
  • non-GPU-aware (old-stable) MPI versions could malform host-side pinned/page-locked buffers for subsequent cudaMalloc/cudaFree calls (core routines not affected) #438
  • ADIOS
    • particle output was broken #296
    • CMake build was broken #260 #268
  • libSplash
    • output performance drastically improved #297
  • libPMacc
    • GameOfLife example was broken #295
    • log compile broken for high log level #372
    • global reduce did not work for references/const #448
    • cuSTL assign was broken for big data sets #431
    • cuSTL reduce minor memory leak fixed #433
  • compile suite updated and messages escaped #301 #385
  • plugins
    • BinEnergyParticles header corrected #317 #319
    • PNG undefined buffer values fixed #339
    • PNG in 2D did not ignore invalid slides #432
  • examples
    • Kelvin-Helmholtz example box size corrected #352
    • Bunch/SingleParticleRadiationWithLaser observation angle fixed #424

Misc:

  • more generic 2 vs 3D algorithms #255
  • experimental PGI support removed #257
  • gcc 4.3 support dropped #264
  • various gcc warnings fixed #266 #284
  • CMake 3.8.12-2 warnings fixed #366
  • picongpu.profile example added for
    • Titan (ORNL) #263
    • Hypnos (HZDR) #415
  • documentation updated #275 #337 #338 #357 #409
  • wiki started: plugins, developer hints, simulation control, examples #288 #321 #328
  • particle interfaces clened up #278
  • ParticleToGrid kernels refactored #329
  • slide log is now part of the SIMULATION_STATE level #354
  • additional NGP current implementation removed #429
  • libPMacc
    • GameOfLife example documented #305
    • compile time vector refactored #349
    • shortened compile time template error messages #277
    • cuSTL inline documentation added #365
    • compile time operators and ForEach refactored #380
    • TVec removed in preference of CT::Vector #394
  • new developers added #331 #373
  • Attribution text updated and BibTex added #428

Open Beta RC4

Date: 2014-03-07

This is the 4th release candidate, a pre-beta version.

Changes to "Open Beta RC3"

.param file changes:

New Features:

  • 2D support for basic PIC cycle #212
  • hdf5 output xdmf meta description added: ParaView/VisIt support #219
  • background current (FieldJ) can be added now #245

Bug fixes:

  • beta-rc3 was broken for some clusters due to an init bug #239
  • examples/WeibelTransverse 4 GPU example was broken #221
  • smooth script was broken for 1D fields #223
  • configure non-existing path did not throw an error #229
  • compile time vector "max" was broken #224
  • cuda_memtest did throw false negatives on hypnos #231 #236
  • plugin "png" did not compile for missing freetype #248

Misc:

  • documentation updates
    • radiation post processing scripts #222
    • more meta data in hdf5 output #216
    • tbg help extended and warnings to errors #226
    • doc/PARTICIPATE.md is now GitHub's CONTRIBUTING.md #247 #252
    • slurm interactive queue one-liner added #250
    • developers updated #251
  • clean up / refactoring
    • cell_size -> cellSize #227
    • typeCast -> precisionCast #228
    • param file includes (see above for details) #234
    • DataConnector interface redesign #218 #232
    • Esirkepov implementation "paper-like" #238

Open Beta RC3

Date: 2014-02-14

This is the third release candidate, a pre-beta version.

Changes to "Open Beta RC2"

.param and .cfg file changes:

  • componentsConfig.param:
  • dimension.param: new file with simDim setting #134
    • only add this file to your example/test/config if you want to change it from the default value (3D)
  • fieldConfig.param: renamed to fieldSolver.param #131
  • fieldBackground.param: new file to add external background fields #131
  • cfg files cleaned up #153 #193

New Features:

  • background fields for E and B #131
  • write parallel hdf5 with libSplash 1.1 #141 #151 #156 #191 #196
  • new plugins
    • ADIOS output support #179 #196
    • makroParticleCounter/PerSuperCell #163
  • cuda_memtest can check mapped memory now #173
  • EnergyDensity works for 2-3D now #175
  • new type floatD_X shall be used for position types (2-3D) #184
  • libPMacc
    • new functors for multiplications and substractions #135
    • opened more interfaces to old functors #197
    • MappedMemoryBuffer added #169 #182
    • unary transformations can be performed on DataBox'es now, allowing for non-commutative operations in reduces #204

Bug fixes:

  • libPMacc
    • GridBuffer could deadlock if called uninitialized #149
    • TaskSetValue was broken for all arrays with x-size != n*256 #174
    • CUDA 6.0 runs crashed during cudaSetDeviceFlags #200
    • extern shared mem could not be used with templated types #199
  • tbg
    • clearify error message if the tpl file does not exist #130
  • HDF5Writer did not write ions any more #188
  • return type of failing Slurm runs fixed #198 #205
  • particles in-cell position fixed with cleaner algorithm #209

Misc:

  • documentation improved for
    • cuSTL #116
    • gasConfig.param describe slopes better (no syntax changes) #126
    • agreed on coding guide lines #155 #161 #140
    • example documentation started #160 #162 #176
    • taurus (slurm based HPC cluster) updates #206
  • IDE: ignore Code::Blocks files #125
  • Esirkepov performance improvement by 30% #139
  • MySimulation asserts refactored for nD #187
  • Fields.def with field forward declarations added, refactored to provide common ValueType #178
  • icc warnings in cuda_memcheck fixed #210
  • libPMacc
    • refactored math::vector to play with DataSpace #138 #147
    • addLicense script updated #167
    • MPI_CHECK writes to stderr now #168
    • TVec from/to CT::Int conversion #185
    • PositionFilter works for 2-3D now #189 #207
    • DeviceBuffer cudaPitchedPtr handling clean up #186
    • DataBoxDim1Access refactored #202

Open Beta RC2

Date: 2013-11-27

This is the second release candidate, a pre-beta version.

Changes to "Open Beta RC1"

.param file changes:

New Features:

  • A change log was introduced for master releases #93
  • new gas profile "gasFreeFormula" for user defined profiles #96
  • CMake (config) #79
    • checks for minimal required versions of dependent libraries #92
    • checks for libSplash version #85
    • update to v2.8.5+ #52
    • implicit plugin selection: enabled if found #52
    • throw more warnings #37
    • experimental support for icc 12.1 and PGI 13.6 #37
  • libPMacc
    • full rewrite of the way we build particle frames # 86
    • cuSTL: ForEach works on host 1D and 2D data now #44
    • math::pow added #54
    • compile time ForEach added #50
  • libSplash
    • dependency upgraded to beta (v1.0) release #80
    • type traits for types PIConGPU - libSplash #69
    • splash2txt update to beta interfaces #83
  • new particle to grid routines calculating the Larmor energy #68
  • dumping multiple FieldTmp to hdf5 now possible #50
  • new config for SLURM batch system (taurus) #39

Bug fixes:

  • libPMacc
    • cuSTL
      • assign was broken for deviceBuffers #103
      • lambda expressions were broken #42 #46 #100
      • icc support was broken #100 #101
      • views were broken #62
    • InheritGenerator and deselect: icc fix #101
    • VampirTrace (CUPTI) support: cudaDeviceReset added #90
    • GameOfLife example fixed #53 #55
    • warnings in __cudaKernel fixed #51
  • picongpu
    • removed all non-ascii chars from job scripts #95 #98
    • CMake
      • keep ptx code was broken #82
      • PGI: string compare broken #75
      • MPI: some libs require to load the C++ dependencies, too #64
      • removed deprecated variables #52
      • Threads: find package was missing #34
    • various libSplash bugs #78 #80 #84
    • current calculation speedup was broken #72
    • Cell2Particle functor missed to provide static methods #49
  • tools
    • compile: script uses -q now implicit for parallel (-j N) tests
    • plotDensity: update to new binary format #47
  • libraries
    • boost 1.55 work around, see trac #9392 (nvcc #391854)

Misc:

  • new reference: SC13 paper, Gordon Bell Finals #106
  • new flavoured logo for alpha
  • Compile Suite: GitHub integration #33 #35
  • dropped CUDA sm_13 support (now sm_20+ is required) #42

Open Beta RC1

Date: 2013-09-05 07:47:03 -0700

This is the first release candidate, a pre-beta version. We tagged this state since we started to support sm_20+ only.

Changes to "Open Alpha"

n/a

Open Alpha

Date: 2013-08-14 02:25:36 -0700

That's our our open alpha release. The alpha release is developer and power user release only! Users should wait for our beta release!