54:T962,Table 1: Profile by Function Samp% | Samp | Imb. | Imb. | Group | | Samp | Samp% | Function | | | | PE=HIDE 100.0% | 5,235.5 | -- | -- | Total |----------------------------------------------------------------------------- | 50.2% | 2,628.5 | -- | -- | USER ||---------------------------------------------------------------------------- || 7.3% | 383.0 | 15.0 | 5.0% | eos_module_mp_iterate_ne_ || 5.7% | 300.8 | 138.2 | 42.0% | amrex_deposit_cic || 5.1% | 265.2 | 79.8 | 30.8% | update_dm_particles || 2.8% | 147.2 | 5.8 | 5.0% | fort_fab_setval || 2.6% | 137.2 | 48.8 | 34.9% | amrex::ParticleContainer<>::Where || 2.6% | 137.0 | 11.0 | 9.9% | ppm_module_mp_ppm_type1_ || 2.5% | 133.0 | 24.0 | 20.4% | eos_module_mp_nyx_eos_t_given_re_ || 2.1% | 107.8 | 33.2 | 31.4% | amrex::ParticleContainer<>::IncrementWithTotal || 1.7% | 89.2 | 19.8 | 24.2% | f_rhs_ || 1.4% | 74.0 | 7.0 | 11.5% | riemannus_ || 1.1% | 56.0 | 2.0 | 4.6% | amrex::VisMF::Write || 1.0% | 50.5 | 1.5 | 3.8% | amrex::VisMF::Header::CalculateMinMax ||============================================================================ | 28.1% | 1,471.0 | -- | -- | ETC ||---------------------------------------------------------------------------- || 7.4% | 388.8 | 10.2 | 3.4% | __intel_mic_avx512f_memcpy || 6.9% | 362.5 | 45.5 | 14.9% | CVode || 3.1% | 164.5 | 8.5 | 6.6% | __libm_log10_l9 || 2.9% | 149.8 | 29.2 | 21.8% | _INTERNAL_25_______src_kmp_barrier_cpp_5de9139b::__kmp_hyper_barrier_gather ||============================================================================ | 16.8% | 879.8 | -- | -- | MPI ||---------------------------------------------------------------------------- || 5.1% | 266.0 | 123.0 | 42.2% | MPI_Allreduce || 4.2% | 218.2 | 104.8 | 43.2% | MPI_Waitall || 2.9% | 151.8 | 78.2 | 45.4% | MPI_Bcast || 2.6% | 135.0 | 98.0 | 56.1% | MPI_Barrier || 2.0% | 105.8 | 5.2 | 6.3% | MPI_Recv ||============================================================================ | 1.9% | 98.2 | -- | -- | IO ||---------------------------------------------------------------------------- || 1.8% | 93.8 | 6.2 | 8.3% | read ||============================================================================ 55:T867,##IPMv2.0.5######################################################## # # command : /global/cscratch1/sd/cchan2/projects/lbl/BoxLib/Tests/LinearSolvers/C_CellMG/./main3d.intel.MPI.OMP.ex.ipm inputs.3d.25600 # start : Tue Aug 15 17:34:23 2017 host : nid11311 # stop : Tue Aug 15 17:34:35 2017 wallclock : 11.54 # mpi_tasks : 128 on 32 nodes %comm : 32.51 # mem [GB] : 126.47 gflop/sec : 0.00 # # : [total] min max # wallclock : 1188.42 9.28 8.73 11.54 # MPI : 386.31 3.02 2.51 4.78 # %wall : # MPI : 32.52 24.36 41.44 # #calls : # MPI : 5031172 39306 23067 57189 # mem [GB] : 126.47 0.99 0.98 1.00 # # [time] [count] <%wall> # MPI_Allreduce 225.72 567552 18.99 # MPI_Waitall 92.84 397056 7.81 # MPI_Recv 29.36 193 2.47 # MPI_Isend 25.04 2031810 2.11 # MPI_Irecv 4.35 2031810 0.37 # MPI_Allgather 2.60 128 0.22 # MPI_Barrier 2.24 512 0.19 # MPI_Gatherv 1.70 128 0.14 # MPI_Comm_dup 1.23 256 0.10 # MPI_Bcast 1.14 256 0.10 # MPI_Send 0.06 319 0.01 # MPI_Reduce 0.02 128 0.00 # MPI_Comm_free 0.01 128 0.00 # MPI_Comm_group 0.00 128 0.00 # MPI_Comm_size 0.00 256 0.00 # MPI_Comm_rank 0.00 256 0.00 # MPI_Init 0.00 128 0.00 # MPI_Finalize 0.00 128 0.0056:T836,Box domain(geom[0].Domain()); // Set BCs for Poisson solver in bc_lo, bc_hi ... // // First define the operator "ebtensorop" // Note we call LPInfo().setMaxCoarseningLevel(0) because we are only applying the operator, // not doing an implicit solve // // (alpha * a - beta * (del dot b grad)) sol // // LPInfo info; MLEBTensorOp ebtensorop(geom, grids, dmap, LPInfo().setMaxCoarseningLevel(0), amrex::GetVecOfConstPtrs(ebfactory)); // It is essential that we set MaxOrder of the solver to 2 // if we want to use the standard sol(i)-sol(i-1) approximation // for the gradient at Dirichlet boundaries. // The solver's default order is 3 and this uses three points for the // gradient at a Dirichlet boundary. ebtensorop.setMaxOrder(2); // LinOpBCType Definitions are in amrex/Src/Boundary/AMReX_LO_BCTYPES.H ebtensorop.setDomainBC ( {(LinOpBCType)bc_lo[0], (LinOpBCType)bc_lo[1], (LinOpBCType)bc_lo[2]}, {(LinOpBCType)bc_hi[0], (LinOpBCType)bc_hi[1], (LinOpBCType)bc_hi[2]} ); // Return div (eta grad)) phi ebtensorop.setScalars(0.0, -1.0); amrex::Vector, AMREX_SPACEDIM>> b; b.resize(max_level + 1); // Compute the coefficients for (int lev = 0; lev < nlev; lev++) { // We average eta onto faces for(int dir = 0; dir < AMREX_SPACEDIM; dir++) { BoxArray edge_ba = grids[lev]; edge_ba.surroundingNodes(dir); b[lev][dir] = std::make_unique(edge_ba, dmap[lev], 1, nghost, MFInfo(), *ebfactory[lev]); } average_cellcenter_to_face( GetArrOfPtrs(b[lev]), *etan[lev], geom[lev] ); b[lev][0] -> FillBoundary(geom[lev].periodicity()); b[lev][1] -> FillBoundary(geom[lev].periodicity()); b[lev][2] -> FillBoundary(geom[lev].periodicity()); ebtensorop.setShearViscosity (lev, GetArrOfConstPtrs(b[lev])); ebtensorop.setEBShearViscosity(lev, (*eta[lev])); ebtensorop.setLevelBC ( lev, GetVecOfConstPtrs(vel)[lev] ); } MLMG solver(ebtensorop); solver.apply(GetVecOfPtrs(divtau), GetVecOfPtrs(vel));53:{"contextType":"code","snippets":[{"codeTitle":"Enable OpenMP support with CMake","codeDescription":"Example command to enable OpenMP support and set the installation prefix during the CMake configuration phase.","codeLanguage":"console","codeTokens":68,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/BuildingAMReX.rst#_snippet_15","pageTitle":"Unknown","codeList":[{"language":"console","code":"cmake -DAMReX_OMP=YES -DCMAKE_INSTALL_PREFIX=/path/to/installdir /path/to/amrex"}],"relevance":0.032795697,"generationDate":"2026-09-19T15:28:59.822Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"C++ example: FFT::Stokes solver setup and solve","codeDescription":"Shows how to create an FFT::Stokes object and call solve() with velocity components (u, v, w), pressure (pres), and right-hand side components (rhsx, rhsy, rhsz) on a MAC staggered grid. Requires periodic boundary conditions and cell-centered pressure. The solver should be cached for reuse.","codeLanguage":"c++","codeTokens":221,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/FFT.rst#_snippet_6","pageTitle":"Unknown","codeList":[{"language":"c++","code":"Geometry geom(...);\nMultiFab pres(...); // cell-centered\nMultiFab u(...); // at x-face centers\nMultiFab v(...); // at y-face centers\nMultiFab w(...); // at z-face centers\nMultiFab rhsx(...); // at x-face centers\nMultiFab rhsy(...); // at y-face centers\nMultiFab rhsz(...); // at z-face centers\n\nFFT::Stokes stokes(geom);\nstokes.solve(u, v, w, pres, // outputs\n rhsx, rhsy, rhsz, alpha, eta); // inputs"}],"relevance":0.031513646,"generationDate":"2026-09-19T15:27:07.886Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Fortran: amrex_parmparse get and query examples","codeDescription":"Shows how to build a ParmParse object, get required parameters, query optional ones with a default, and destroy the object. Destroying is optional if the compiler supports finalization, but explicit destruction is required to avoid memory leaks otherwise.","codeLanguage":"fortran","codeTokens":151,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Fortran.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"language":"fortran","code":"type(amrex_parmparse) :: pp\ninteger :: n_cell, max_grid_size\ncall amrex_parmparse_build(pp)\ncall pp%get(\"n_cell\", n_cell)\nmax_grid_size = 32 ! default size\ncall pp%query(\"max_grid_size\", max_grid_size)\ncall amrex_parmparse_destroy(pp) ! optional if compiler supports finalization"}],"relevance":0.027031738,"generationDate":"2026-09-19T15:26:36.915Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Inputs File Format Example","codeDescription":"Example of an inputs file showing variable definitions, comments, list formats, string handling, and table structures.","codeLanguage":"python","codeTokens":457,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_7","pageTitle":"Unknown","codeList":[{"language":"python","code":"nsteps = 100 # integer\nnsteps = 1000 # nsteps appears a second time\ndt = 0.03 # floating-point number\nncells = 128 64 32 # a list of 3 ints\nxrange = -0.5 0.5 # a list of 2 reals\ntitle = \"Three Kingdoms\" # a string\nhydro.cfl = 0.8 # with prefix, hydro\nmy_2d_table = \\\n # col 1 2 3\n {{ 11.0, 12.0, 13.0 } # row 1\n { 21.0, 22.0, 23.0 } # row 2\n { 31.0, 32.0, 33.0 } # row 3\n { 41.0, 42.0, 43.0 } } # row 4\n# or\nmy_2d_table = # col 1 2 3\n {{ 11, 12, 13 } # row 1\n { 21, 22, 23 } # row 2\n { 31, 32, 33 } # row 3\n { 41, 42, 43 } } # row 4\n# or\nmy_2d_table = # col 1 2 3\n {{ 11, 12, 13 }, # row 1\n { 21, 22, 23 }, # row 2\n { 31, 32, 33 }, # row 3\n { 41, 42, 43 } } # row 4"}],"relevance":0.026334027,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Install yt in a custom Anaconda environment","codeDescription":"Commands to load the Python module, create a conda environment, activate it, and install yt via pip.","codeLanguage":"console","codeTokens":122,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Visualization.rst#_snippet_18","pageTitle":"Unknown","codeList":[{"language":"console","code":"user@cori10:~> module load python/3.5-anaconda\nuser@cori10:~> conda create -p $HOME/yt-conda numpy\nuser@cori10:~> source activate $HOME/yt-conda\n(/global/homes/u/user/yt-conda/) user@cori10:~> pip install yt"}],"relevance":0.026279628,"generationDate":"2026-09-19T15:31:26.616Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"CMake build and install commands","codeDescription":"Commands to configure, build, and install AMReX using CMake. The optional test_install step verifies the installation.","codeLanguage":"console","codeTokens":126,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/BuildingAMReX.rst#_snippet_14","pageTitle":"Unknown","codeList":[{"language":"console","code":"mkdir /path/to/builddir\ncd /path/to/builddir\ncmake [options] -DCMAKE_BUILD_TYPE=[Debug|Release|RelWithDebInfo|MinSizeRel] -DCMAKE_INSTALL_PREFIX=/path/to/installdir /path/to/amrex\nmake install\nmake test_install # optional step to test if the installation is working"}],"relevance":0.025488403,"generationDate":"2026-09-19T15:28:59.822Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Initialize EB2 IndexSpace for a sphere","codeDescription":"Example of building an EB geometric database for a sphere using EB2::SphereIF and EB2::makeShop. The example defines a radius, center, and inside flag, then builds the IndexSpace with a Geometry object.","codeLanguage":"c++","codeTokens":157,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/EB.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"language":"c++","code":"Real radius = 0.5;\nArray center{0., 0., 0.}; //Center of the sphere\nbool inside = false; // Is the fluid inside the sphere?\nEB2::SphereIF sphere(radius, center, inside);\n\nauto shop = EB2::makeShop(sphere);\n\nGeometry geom(...);\nEB2::Build(shop, geom, 0, 0);"}],"relevance":0.024891775,"generationDate":"2026-09-19T15:28:30.719Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Tiny Profiler Region Output Example","codeDescription":"Example output showing how a region appears in the Tiny Profiler report, indicated by the REG:: prefix.","codeLanguage":"console","codeTokens":284,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/AMReX_Profiling_Tools.rst#_snippet_14","pageTitle":"Unknown","codeList":[{"language":"console","code":"BEGIN REGION MyFuncs\n\n-------------------------------------------------------------\nName NCalls Excl. Min Excl. Avg Excl. Max Max %\n-------------------------------------------------------------\nMyFunc0 1000 4.402 4.402 4.402 14.19%\nMyFunc1 1000 4.39 4.39 4.39 14.15%\nREG::MyFuncs 1000 0.0168 0.0168 0.0168 0.05%\n-------------------------------------------------------------\n\n-------------------------------------------------------------\nName NCalls Incl. Min Incl. Avg Incl. Max Max %\n-------------------------------------------------------------\nREG::MyFuncs 1000 8.809 8.809 8.809 28.39%\nMyFunc0 1000 4.402 4.402 4.402 14.19%\nMyFunc1 1000 4.39 4.39 4.39 14.15%\n-------------------------------------------------------------\n\nEND REGION MyFuncs"}],"relevance":0.024089636,"generationDate":"2026-09-19T15:26:17.153Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"pat_report output example","codeDescription":"Example output from running 'pat_report .ap2' showing a profile by function table with sampling percentages, sample counts, and imbalance data for various functions and groups.","codeLanguage":"default","codeTokens":981,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/External_Profiling_Tools.rst#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"default","code":"$54"}],"relevance":0.02402746,"generationDate":"2026-09-19T15:25:45.356Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Install Amrvis dependencies on macOS","codeDescription":"Commands to install XQuartz and OpenMotif using Homebrew for building Amrvis on macOS.","codeLanguage":"console","codeTokens":54,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Visualization.rst#_snippet_5","pageTitle":"Unknown","codeList":[{"language":"console","code":"brew cask install xquartz\nbrew install openmotif"}],"relevance":0.023931624,"generationDate":"2026-09-19T15:31:26.616Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Build 3D executable with make DIM = 3","codeDescription":"Compile the example in 3D by setting the DIM variable to 3.","codeLanguage":"makefile","codeTokens":46,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/Amr/Advection_AmrCore/README.md#_snippet_5","pageTitle":"Unknown","codeList":[{"language":"makefile","code":"make DIM = 3"}],"relevance":0.023926716,"generationDate":"2026-09-19T15:30:35.136Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Sod Tutorial Test Setup","codeDescription":"Configures the Sod tutorial test case by defining its specific source files and input files, then calling the setup_test macro.","codeLanguage":"cmake","codeTokens":120,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/GPU/CNS/CMakeLists.txt#_snippet_2","pageTitle":"Unknown","codeList":[{"language":"cmake","code":"set(_sod_sources Exec/Sod/cns_prob.cpp Exec/Sod/cns_prob.H Exec/Sod/cns_prob_parm.H ${_sources})\nset(_input_files Exec/Sod/inputs-ci)\n\nsetup_test(3 _sod_sources _input_files\n BASE_NAME GPU_CNS_Sod\n RUNTIME_SUBDIR Sod)\n\nunset(_sod_sources)"}],"relevance":0.023860913,"generationDate":"2026-09-19T15:33:02.008Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"C++ example: Creating and transforming implicit functions","codeDescription":"Shows how to instantiate basic implicit functions (SphereIF, BoxIF, CylinderIF, PlaneIF) and apply transformations (makeUnion, makeIntersection, rotate, scale) to build composite geometry. The example uses ellipses (...) for constructor arguments, which must be replaced with actual parameters.","codeLanguage":"c++","codeTokens":229,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/EB.rst#_snippet_3","pageTitle":"Unknown","codeList":[{"language":"c++","code":"EB2::SphereIF sphere1(...);\nEB2::SphereIF sphere2(...);\nEB2::BoxIF box(...);\nEB2::CylinderIF cylinder(...);\nEB2::PlaneIF plane(...);\n\n// union of two spheres\nauto twospheres = EB2::makeUnion(sphere1, sphere2);\n\n// intersection of a rotated box, a plane and the union of two spheres\nauto box_plane = EB2::makeIntersection(amrex::rotate(box,...),\n plane,\n twospheres);\n\n// scale a cylinder by a factor of 2 in x and y directions, and 3 in z-direction.\nauto scylinder = EB2::scale(cylinder, {2., 2., 3.});"}],"relevance":0.0236761,"generationDate":"2026-09-19T15:28:30.719Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Build with GNU Make and CUDA","codeDescription":"Builds the HelloWorld_C example with GNU compiler and CUDA support. Produces an executable named main3d.gnu.DEBUG.CUDA.ex.","codeLanguage":"console","codeTokens":54,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GPU.rst#_snippet_0","pageTitle":"Unknown","codeList":[{"code":"make COMP=gnu USE_CUDA=TRUE","language":"console"}],"relevance":0.023415979,"generationDate":"2026-09-19T15:42:34.006Z","model":"Unknown"},{"codeTitle":"FFT::Poisson solver example with boundary conditions","codeDescription":"Example of solving Poisson's equation with FFT::Poisson. It sets up geometry, solution and RHS MultiFabs, defines boundary conditions (periodic, even, odd), shifts the RHS to have zero sum if no Dirichlet boundaries, then constructs the solver and calls solve.","codeLanguage":"c++","codeTokens":273,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/FFT.rst#_snippet_4","pageTitle":"Unknown","codeList":[{"language":"c++","code":"Geometry geom(...);\nMultiFab soln(...);\nMultiFab rhs(...);\n\nArray,AMREX_SPACEDIM>\n fft_bc{...};\n\nbool has_dirichlet = false;\nfor (int idim = 0; idim < AMREX_SPACEDIM; ++idim) {\n has_dirichlet = has_dirichlet ||\n fft_bc[idim].first == FFT::Boundary::odd ||\n fft_bc[idim].second == FFT::Boundary::odd;\n}\nif (! has_dirichlet) {\n // Shift rhs so that its sum is zero.\n auto rhosum = rhs.sum(0);\n rhs.plus(-rhosum/geom.Domain().d_numPts(), 0, 1);\n}\n\nFFT::Poisson fft_poisson(geom, fft_bc);\nfft_poisson.solve(soln, rhs);"}],"relevance":0.023399014,"generationDate":"2026-09-19T15:27:07.886Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Equivalent inputs file entries","codeDescription":"The equivalent entries in an inputs file for the provided command-line example.","codeLanguage":"none","codeTokens":56,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_21","pageTitle":"Unknown","codeList":[{"language":"none","code":"ncells = 64 32 16\nhydro.cfl = 0.9\nmy_string = \"A String\""}],"relevance":0.023296526,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Run HelloWorld_C CUDA Executable","codeDescription":"Example output from running the built executable. Shows CUDA initialization, AMReX version, GPU memory information, and finalization.","codeLanguage":"console","codeTokens":194,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GPU.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"code":"$$ ./main3d.gnu.DEBUG.CUDA.ex\nInitializing CUDA...\nCUDA initialized with 1 GPU\nAMReX (19.06-404-g0455b168b69c-dirty) initialized\nHello world from AMReX version 19.06-404-g0455b168b69c-dirty\nTotal GPU global memory (MB): 6069\nFree GPU global memory (MB): 5896\n[The Arena] space (MB): 4552\n[The Managed Arena] space (MB): 8\n[The Pinned Arena] space (MB): 8\nAMReX (19.06-404-g0455b168b69c-dirty) finalized","language":"console"}],"relevance":0.023172287,"generationDate":"2026-09-19T15:42:34.006Z","model":"Unknown"},{"codeTitle":"Build 2D executable with make DIM = 2","codeDescription":"Compile the example in 2D by setting the DIM variable to 2.","codeLanguage":"makefile","codeTokens":46,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/Amr/Advection_AmrCore/README.md#_snippet_4","pageTitle":"Unknown","codeList":[{"language":"makefile","code":"make DIM = 2"}],"relevance":0.022859309,"generationDate":"2026-09-19T15:30:35.136Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Install libvolpack1-dev via apt","codeDescription":"Installs the Volpack development package on Debian Linux using the package manager.","codeLanguage":"console","codeTokens":44,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Visualization.rst#_snippet_2","pageTitle":"Unknown","codeList":[{"language":"console","code":"sudo apt install libvolpack1-dev"}],"relevance":0.022504456,"generationDate":"2026-09-19T15:31:26.616Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"AMReX input parameters for odd refinement ratio example","codeDescription":"Example AMReX input settings for n_cell = 749 679 69, ref_ratio_vect = 3 3 1, and max_level = 1. Uses blocking_factor 24 in x and y, 8 in z, and max_grid_size 96 on level 1. Requires amr.no_box_split_dir = 2.","codeLanguage":"none","codeTokens":167,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GridCreation.rst#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"none","code":"amr.no_box_split_dir = 2\namr.blocking_factor_x = 1 24\namr.blocking_factor_y = 1 24\namr.blocking_factor_z = 1 8\namr.max_grid_size_x = 188 96\namr.max_grid_size_y = 188 96"}],"relevance":0.021865716,"generationDate":"2026-09-19T15:26:08.607Z","model":"Unknown"},{"codeTitle":"Configure Time Integration Runtime Parameters","codeDescription":"Example configuration for selecting the integrator backend and specifying parameters for the native explicit Runge-Kutta method.","codeLanguage":"c++","codeTokens":299,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/TimeIntegration_Chapter.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"language":"c++","code":"# INTEGRATION\n\n## *** Selecting the integrator backend ***\n## integration.type can take on the following string or int values:\n## (without the quotation marks)\n## \"ForwardEuler\" or \"0\" = Native Forward Euler Integrator\n## \"RungeKutta\" or \"1\" = Native Explicit Runge Kutta\n## \"SUNDIALS\" or \"2\" = SUNDIALS Integrator\n## for example:\nintegration.type = RungeKutta\n\n## *** Parameters Needed For Native Explicit Runge-Kutta ***\n#\n## integration.rk.type can take the following values:\n### 0 = User-specified Butcher Tableau\n### 1 = Forward Euler\n### 2 = Trapezoid Method\n### 3 = SSPRK3 Method\n### 4 = RK4 Method\nintegration.rk.type = 3\n\n## If using a user-specified Butcher Tableau, then\n## set nodes, weights, and table entries here:\n#\n## The Butcher Tableau is read as a flattened,\n## lower triangular matrix (but including the diagonal)\n## in row major format.\nintegration.rk.weights = 1\nintegration.rk.nodes = 0\nintegration.rk.tableau = 0.0"}],"relevance":0.02151113,"generationDate":"2026-09-19T15:28:34.314Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"FFT::PoissonOpenBC solver example","codeDescription":"Example of solving Poisson's equation with open boundaries using FFT::PoissonOpenBC. The solution MultiFab can be nodal or cell-centered, and the RHS must have the same index type. A non-zero ghost cell count ng allows computing potential outside the domain.","codeLanguage":"c++","codeTokens":173,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/FFT.rst#_snippet_5","pageTitle":"Unknown","codeList":[{"language":"c++","code":"Geometry geom(...);\nMultiFab soln(...); // soln can be either nodal or cell-centered.\nMultiFab rhs(...); // rhs must have the same index type as soln.\n\nint ng = ...; // ng can be non-zero, if we want to compute potential\n // outside the domain.\nFFT::PoissonOpenBC openbc_solver(geom, soln.ixType(), IntVect(ng));\nopenbc_solver.solve(soln, rhs);"}],"relevance":0.02150901,"generationDate":"2026-09-19T15:27:07.886Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Set multiple parameters via AMREX_DEFAULT_INIT","codeDescription":"Example of setting multiple parameters, including arrays and strings, in a single AMREX_DEFAULT_INIT environment variable.","codeLanguage":"console","codeTokens":82,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_24","pageTitle":"Unknown","codeList":[{"language":"console","code":"export AMREX_DEFAULT_INIT=\"amrex.envfoo=0 amrex.envbar=1 amrex.envabc=1 2 3 amrex.envstr=\\\"a b c\\\"\""}],"relevance":0.021157894,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Equivalent inputs file settings","codeDescription":"The corresponding settings in an AMReX inputs file for the multi-parameter environment variable example.","codeLanguage":"python","codeTokens":72,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_25","pageTitle":"Unknown","codeList":[{"language":"python","code":"amrex.envfoo = 0\namrex.envbar = 1\namrex.envabc = 1 2 3\namrex.envstr = \"a b c\""}],"relevance":0.020220589,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Build HYPRE for CPU","codeDescription":"Steps to clone, configure, and install HYPRE for CPU-based builds, including the optional bigint configuration.","codeLanguage":"console","codeTokens":133,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/LinearSolvers.rst#_snippet_20","pageTitle":"Unknown","codeList":[{"language":"console","code":"1.- git clone https://github.com/hypre-space/hypre.git\n2.- cd hypre/src\n3.- git checkout v2.32.0\n4.- ./configure\n (if you want to build HYPRE with long long int, do ./configure --enable-bigint )\n5.- make install\n6.- Create an environment variable with the HYPRE directory --\n HYPRE_DIR=/hypre_path/hypre/src/hypre"}],"relevance":0.019843597,"generationDate":"2026-09-19T15:29:49.564Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Original Fortran loop structure","codeDescription":"An example of a standard loop structure in Fortran before applying tiling.","codeLanguage":"fortran","codeTokens":135,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_87","pageTitle":"Unknown","codeList":[{"language":"fortran","code":"do k = kmin, kmax\n do j = jmin, jmax\n do i = imin, imax\n A(i,j,k) = B(i+1,j,k)+B(i-1,j,k)+B(i,j+1,k)+B(i,j-1,k) &\n +B(i,j,k+1)+B(i,j,k-1)-6.0d0*B(i,j,k)\n end do\n end do\nend do"}],"relevance":0.018740948,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Build SUNDIALS with CMake","codeDescription":"Commands to configure, build, and install SUNDIALS. Adjust ENABLE_MPI and ENABLE_CUDA flags as required for your environment.","codeLanguage":"bash","codeTokens":120,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/TimeIntegration_Chapter.rst#_snippet_2","pageTitle":"Unknown","codeList":[{"language":"c++","code":"cmake -S /path_to_sundials_source_code -B /path_to_sundials_build_dir -D CMAKE_INSTALL_PREFIX=/path_to_sundials_install_dir -D ENABLE_MPI=ON -D ENABLE_CUDA=ON -DCMAKE_CUDA_ARCHITECTURES=XX\ncd /path_to_sundials_build_dir\nmake\nmake install"}],"relevance":0.017704662,"generationDate":"2026-09-19T15:28:34.314Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Configure AMReX with SYCL support","codeDescription":"Example configuration for building AMReX with SYCL support. Requires setting AMReX_GPU_BACKEND=SYCL and CMAKE_CXX_COMPILER to a valid SYCL compiler (icpx).","codeLanguage":"console","codeTokens":93,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GPU.rst#_snippet_8","pageTitle":"Unknown","codeList":[{"code":"cmake -DAMReX_GPU_BACKEND=SYCL -DCMAKE_CXX_COMPILER=$(which icpx) [other options] /path/to/amrex/source","language":"console"}],"relevance":0.017557023,"generationDate":"2026-09-19T15:42:34.006Z","model":"Unknown"},{"codeTitle":"Set GPU-aware MPI via AMREX_DEFAULT_INIT","codeDescription":"Example of setting a single parameter using the AMREX_DEFAULT_INIT environment variable in a job script.","codeLanguage":"console","codeTokens":59,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_23","pageTitle":"Unknown","codeList":[{"language":"console","code":"export AMREX_DEFAULT_INIT=\"amrex.use_gpu_aware_mpi=1\""}],"relevance":0.016467877,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Instrumenting main() with BL_PROFILE_VAR","codeDescription":"Use BL_PROFILE_VAR to instrument the main function, ensuring the profiler is started and stopped correctly.","codeLanguage":"c++","codeTokens":86,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/AMReX_Profiling_Tools.rst#_snippet_6","pageTitle":"Unknown","codeList":[{"language":"c++","code":"int main(...)\n{\n amrex::Initialize(argc,argv);\n BL_PROFILE_VAR(\"main()\",pmain);\n\n \n\n BL_PROFILE_VAR_STOP(pmain);\n amrex::Finalize();\n}"}],"relevance":0.016420688,"generationDate":"2026-09-19T15:26:17.153Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Recommended load balancing pattern: build DistributionMapping and MultiFabs per level","codeDescription":"This example shows the recommended approach: for each level, build the DistributionMapping and then the MultiFabs in the same loop. This ensures that the load balancing accounts for already allocated memory, leading to more optimal distributions.","codeLanguage":"c++","codeTokens":107,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/LoadBalancing.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"language":"c++","code":"for (int lev = 0; lev < nlevels; ++lev) {\n // build DistributionMapping for Level lev\n // build MultiFabs for Level lev\n}"}],"relevance":0.016393442,"generationDate":"2026-09-19T15:25:46.643Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Example Function f1 for Multiple MultiFabs","codeDescription":"A sample function that processes data from a constant input Array4 and writes to an output Array4.","codeLanguage":"c++","codeTokens":196,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_86","pageTitle":"Unknown","codeList":[{"language":"c++","code":"void f1 (Box const& bx, Array4 const& u,\n Array4 const& f)\n{\n const auto lo = lbound(bx);\n const auto hi = ubound(bx);\n const int nf = f.nComp();\n for (int n = 0; n < nf; ++n) {\n for (int k = lo.z; k <= hi.z; ++k) {\n for (int j = lo.y; j <= hi.y; ++j) {\n for (int i = lo.x; i <= hi.x; ++i) {\n f(i,j,k,n) = ... u(i,j,k,n) ...\n }\n }\n }\n }\n}"}],"relevance":0.016065806,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Install AMReX with Spack","codeDescription":"Installs the latest release of AMReX and required dependencies using Spack.","codeLanguage":"bash","codeTokens":41,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/BuildingAMReX.rst#_snippet_20","pageTitle":"Unknown","codeList":[{"language":"bash","code":"spack install amrex"}],"relevance":0.015625,"generationDate":"2026-09-19T15:28:59.822Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Build the project","codeDescription":"Build the project using make with the specified dimension.","codeLanguage":"bash","codeTokens":31,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/LinearSolvers/LeastSquares/README.md#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"bash","code":"$$ make DIM="}],"relevance":0.015625,"generationDate":"2026-09-19T15:30:55.925Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Configure AMReX installation path","codeDescription":"Run this command in the top AMReX directory to specify the installation prefix for the external library.","codeLanguage":"bash","codeTokens":49,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/BuildingAMReX.rst#_snippet_12","pageTitle":"Unknown","codeList":[{"language":"bash","code":"./configure --prefix=[AMReX library path]"}],"relevance":0.014925373,"generationDate":"2026-09-19T15:28:59.822Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Run MPI+OpenMP Hello World and output","codeDescription":"Run the combined MPI+OpenMP build with 2 MPI processes and 4 OMP threads. The output shows both MPI and OMP initialization followed by the Hello World message.","codeLanguage":"console","codeTokens":167,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GettingStarted.rst#_snippet_4","pageTitle":"Unknown","codeList":[{"code":"OMP_NUM_THREADS=4 mpiexec -n 2 ./main3d.gnu.DEBUG.MPI.OMP.ex","language":"console"},{"code":"MPI initialized with 2 MPI processes\nOMP initialized with 4 OMP threads\nAMReX (17.05-30-g5775aed933c4-dirty) initialized\nHello world from AMReX version 17.05-30-g5775aed933c4-dirty\nAMReX (17.05-30-g5775aed933c4-dirty) finalized","language":"console"}],"relevance":0.014925373,"generationDate":"2026-09-19T15:26:40.779Z","model":"Unknown"},{"codeTitle":"Run fgradient command","codeDescription":"Example command to compute the gradient of the density variable from a plotfile named plt0000000, resulting in a new file named grad.plt0000000.","codeLanguage":"console","codeTokens":77,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Post_Processing.rst#_snippet_13","pageTitle":"Unknown","codeList":[{"language":"console","code":"user@:~/AMReX/amrex/Tools/Plotfile$ ./fgradient.gnu.ex -v density plt0000000"}],"relevance":0.014725786,"generationDate":"2026-09-19T15:30:04.494Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Install AMReX Development Version with CUDA","codeDescription":"Installs the development version of AMReX for 2D simulations with CUDA support for architecture sm_60.","codeLanguage":"bash","codeTokens":60,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/BuildingAMReX.rst#_snippet_22","pageTitle":"Unknown","codeList":[{"language":"bash","code":"spack install amrex@develop dimensions=2 +cuda cuda_arch=60"}],"relevance":0.014705882,"generationDate":"2026-09-19T15:28:59.822Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Non-optimal load balancing pattern: build all DistributionMappings then MultiFabs","codeDescription":"This example shows a pattern that is not recommended because it tends to generate non-optimal distributions. The load of each process is measured by how much memory has already been allocated, not how much memory will be allocated, so building all DistributionMappings before any MultiFabs leads to poor balancing.","codeLanguage":"c++","codeTokens":140,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/LoadBalancing.rst#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"c++","code":"for (int lev = 0; lev < nlevels; ++lev) {\n // build DistributionMapping for Level lev\n}\nfor (int lev = 0; lev < nlevels; ++lev) {\n // build MultiFabs for Level lev\n}"}],"relevance":0.014705882,"generationDate":"2026-09-19T15:25:46.643Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Configure palette in .amrvis.defaults","codeDescription":"Example line to edit in the .amrvis.defaults configuration file to point the palette option to the location of the Palette file. The last occurrence of an option takes precedence.","codeLanguage":"default","codeTokens":64,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Visualization.rst#_snippet_4","pageTitle":"Unknown","codeList":[{"code":"palette ~/Amrvis/Palette","language":"default"}],"relevance":0.014667956,"generationDate":"2026-09-19T15:31:26.616Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"C++ and Fortran Interface Mismatch Example","codeDescription":"An example of a C++ declaration and a Fortran definition that contain a mismatch in arguments, which the compiler may not catch.","codeLanguage":"cpp","codeTokens":125,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_107","pageTitle":"Unknown","codeList":[{"language":"cpp","code":"// function declaration\nextern \"C\" {\n void f (amrex_real* x);\n}\n\nfor (MFIter mfi(mf,true); mfi.isValid(); ++mfi)\n{\n f(mf[mfi].dataPtr()));\n}\n\n! Fortran definition\nsubroutine f(x,y) bind(c)\n implicit none\n integer x, y\nend subroutine f"}],"relevance":0.014492754,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Run MPI Hello World with mpiexec and output","codeDescription":"Run the MPI build with 4 processes and optional amrex.v=1 verbosity argument. The output shows MPI initialization and the Hello World message. amrex.v=1 prints the number of MPI processes; default verbosity is 1, use amrex.v=0 to turn off.","codeLanguage":"console","codeTokens":177,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GettingStarted.rst#_snippet_2","pageTitle":"Unknown","codeList":[{"code":"mpiexec -n 4 ./main3d.gnu.DEBUG.MPI.ex amrex.v=1","language":"console"},{"code":"MPI initialized with 4 MPI processes\nAMReX (17.05-30-g5775aed933c4-dirty) initialized\nHello world from AMReX version 17.05-30-g5775aed933c4-dirty\nAMReX (17.05-30-g5775aed933c4-dirty) finalized","language":"console"}],"relevance":0.014285714,"generationDate":"2026-09-19T15:26:40.779Z","model":"Unknown"},{"codeTitle":"Basic Parser Usage","codeDescription":"Demonstrates initializing a Parser with an expression, setting constants, registering variables, and compiling the expression for execution.","codeLanguage":"c++","codeTokens":228,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_29","pageTitle":"Unknown","codeList":[{"language":"c++","code":"Parser parser(\"if(a(); // 3 because there are three variables.\n\n// ParserExecutor<3> f is thread-safe, and can be used in both host and\n// device code. It takes 3 arguments in this example. The parser object\n// must be alive for f to be valid.\nfor (int k = 0; ...) {\n for (int j = 0; ...) {\n for (int i = 0; ...) {\n my_array(i,j,k) = f(i*dx, j*dy, k*dz);\n }\n }\n}"}],"relevance":0.014084507,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Type Check Tool Output Example","codeDescription":"Example output from the AMReX type check tool indicating a mismatch between C++ and Fortran function signatures.","codeLanguage":"console","codeTokens":134,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_109","pageTitle":"Unknown","codeList":[{"language":"console","code":"Function my_f in main_F.H vs. Fortran procedure in f.f90\n number of arguments 1 does NOT match 2.\n arg #1: C type ['double', 'pointer'] does NOT match Fortran type ('INTEGER 4', 'pointer', 'x').\n22 functions checked, 1 error(s) found. More details can be found in tmp_build_dir/t/3d.gnu.DEBUG.EXE/amrex_typecheck.ou."}],"relevance":0.013888889,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Run OpenMP Hello World with OMP_NUM_THREADS and output","codeDescription":"Run the OpenMP build with OMP_NUM_THREADS=4. The output shows OMP initialization and the Hello World message. Ensure OMP_NUM_THREADS is set on your system.","codeLanguage":"console","codeTokens":154,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GettingStarted.rst#_snippet_3","pageTitle":"Unknown","codeList":[{"code":"OMP_NUM_THREADS=4 ./main3d.gnu.DEBUG.OMP.ex","language":"console"},{"code":"OMP initialized with 4 OMP threads\nAMReX (17.05-30-g5775aed933c4-dirty) initialized\nHello world from AMReX version 17.05-30-g5775aed933c4-dirty\nAMReX (17.05-30-g5775aed933c4-dirty) finalized","language":"console"}],"relevance":0.013888889,"generationDate":"2026-09-19T15:26:40.779Z","model":"Unknown"},{"codeTitle":"Python: Sample input for enum example","codeDescription":"Shows the expected input format for the enum parsing example. Note that parsing is case-insensitive only when using query_enum_case_insensitive.","codeLanguage":"python","codeTokens":57,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_11","pageTitle":"Unknown","codeList":[{"language":"python","code":"color1 = red\ncolor2 = BLue"}],"relevance":0.01369863,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Example IPM MPI profile output","codeDescription":"Example output from an IPM-instrumented run showing wallclock, MPI time, memory, and per-MPI-function call counts and times. The output is generated when IPM_REPORT=full is set.","codeLanguage":"console","codeTokens":709,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/External_Profiling_Tools.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"language":"console","code":"$55"}],"relevance":0.013333334,"generationDate":"2026-09-19T15:25:45.356Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Set up MLEBTensorOp and apply to compute divtau","codeDescription":"This C++ example sets up an MLEBTensorOp to compute the viscous term divtau explicitly. It sets boundary conditions, scalars, and face-averaged shear viscosity coefficients, then uses MLMG to apply the operator. Note that the operator cannot be updated in place; build a new one if viscosities change.","codeLanguage":"C++","codeTokens":753,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/LinearSolvers.rst#_snippet_22","pageTitle":"Unknown","codeList":[{"language":"C++","code":"$56"}],"relevance":0.013333334,"generationDate":"2026-09-19T15:29:49.564Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Setting up and advancing a TimeIntegrator","codeDescription":"Demonstrates initializing a TimeIntegrator with state data, defining a right-hand side lambda function, and advancing the solution by a time step dt.","codeLanguage":"cpp","codeTokens":242,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/TimeIntegration_Chapter.rst#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"cpp","code":"#include \n\nMultiFab Sold; // MultiFab containing old-time state data\nMultiFab Snew; // MultiFab where we want new-time state data\n\n// [Fill Sold here]\n\n// Create a time integrator that will work with\n// MultiFabs with the same BoxArray, DistributionMapping,\n// and number of components as the state_data MultiFab.\nTimeIntegrator integrator(Sold);\n\n// Create a function that fills the state BCs and computes the RHS\nauto rhs_fun = [&](MultiFab& rhs, MultiFab& state, const Real time){\n // [Calculate the rhs MultiFab given the state MultiFab]\n};\n\n// Attach the right-hand-side function to the integrator\nintegrator.set_rhs(rhs_fun);\n\n// integrate forward one step from `time` by `dt` to fill Snew\nintegrator.advance(Sold, Snew, time, dt);"}],"relevance":0.012987013,"generationDate":"2026-09-19T15:28:34.314Z","model":"gemini-3.1-flash-lite"},{"codeTitle":"Convert IntVect to Dim3","codeDescription":"Example of converting an IntVect to a Dim3 struct.","codeLanguage":"c++","codeTokens":44,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_47","pageTitle":"Unknown","codeList":[{"language":"c++","code":"IntVect iv(...);\nDim3 d3 = iv.dim3();"}],"relevance":0.012820513,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Get the number of components of a BaseFab","codeDescription":"Returns the number of components in the BaseFab.","codeLanguage":"c++","codeTokens":37,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_63","pageTitle":"Unknown","codeList":[{"language":"c++","code":"int nComp() const;"}],"relevance":0.012658228,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Initialize particles with AoS and SoA data using MFIter","codeDescription":"Loops over all tiles with MFIter, creates a ParticleType, sets its id, cpu, position, and AoS real/int data, then sets SoA real and int attributes and pushes them to the particle container. Assumes CPU execution; for GPU, see linked examples.","codeLanguage":"c++","codeTokens":344,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Particle.rst#_snippet_8","pageTitle":"Unknown","codeList":[{"language":"c++","code":"for (MFIter mfi = MakeMFIter(lev); mfi.isValid(); ++mfi) {\n\n // ``particles'' starts off empty\n auto& particles = GetParticles(lev)[std::make_pair(mfi.index(),\n mfi.LocalTileIndex())];\n\n ParticleType p;\n p.id() = ParticleType::NextID();\n p.cpu() = ParallelDescriptor::MyProc();\n p.pos(0) = ...\n etc...\n\n // AoS real data\n p.rdata(0) = ...\n p.rdata(1) = ...\n\n // AoS int data\n p.idata(0) = ...\n p.idata(1) = ...\n\n // Particle real attributes (SoA)\n std::array real_attribs;\n real_attribs[0] = ...\n real_attribs[1] = ...\n\n // Particle int attributes (SoA)\n std::array int_attribs;\n int_attribs[0] = ...\n int_attribs[1] = ...\n\n particles.push_back(p);\n particles.push_back_real(real_attribs);\n particles.push_back_int(int_attribs);\n\n // ... add more particles if desired ...\n }"}],"relevance":0.0125,"generationDate":"2026-09-19T15:30:45.123Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"CMake foreach loop to setup AsyncOut test","codeDescription":"Iterates over each spatial dimension in AMReX_SPACEDIM, sets the source and input files, and calls setup_test. The variables are unset after each iteration to avoid interference.","codeLanguage":"cmake","codeTokens":114,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/AsyncOut/multifab/CMakeLists.txt#_snippet_0","pageTitle":"Unknown","codeList":[{"language":"cmake","code":"foreach(D IN LISTS AMReX_SPACEDIM)\n set(_sources main.cpp)\n set(_input_files inputs )\n\n setup_test(${D} _sources _input_files)\n\n unset(_sources)\n unset(_input_files)\nendforeach()"}],"relevance":0.012345679,"generationDate":"2026-09-19T15:29:35.038Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Nested MFIter usage in Fortran","codeDescription":"Example of nested MFIter calls in Fortran.","codeLanguage":"fortran","codeTokens":54,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_98","pageTitle":"Unknown","codeList":[{"language":"fortran","code":"call amrex_mfiter_build(mf1, ...)\ncall amrex_mfiter_build(mf2, ...)"}],"relevance":0.012345679,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Nested MFIter usage","codeDescription":"Example of nested MFIter objects which are disallowed by default.","codeLanguage":"c++","codeTokens":55,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_97","pageTitle":"Unknown","codeList":[{"language":"c++","code":"for (MFIter mfi1(...); ...) {\n for (MFIter mfi2(...); ...) {\n }\n}"}],"relevance":0.0121951215,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Configure HDF5 benchmark tests with setup_test","codeDescription":"CMake test setup for the HDF5 benchmark. Requires AMReX_PARTICLES to be enabled; otherwise the script returns early. Iterates over each dimension in AMReX_SPACEDIM, defines main.cpp as the source and inputs as the input file, then calls setup_test for each dimension.","codeLanguage":"cmake","codeTokens":157,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/HDF5Benchmark/CMakeLists.txt#_snippet_0","pageTitle":"Unknown","codeList":[{"code":"# This tests requires particle support\nif (NOT AMReX_PARTICLES)\n return()\nendif ()\n\nforeach(D IN LISTS AMReX_SPACEDIM)\n set(_sources main.cpp)\n set(_input_files inputs )\n\n setup_test(${D} _sources _input_files)\n\n unset(_sources)\n unset(_input_files)\nendforeach()","language":"cmake"}],"relevance":0.011764706,"generationDate":"2026-09-19T15:30:41.872Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"AMREX_ASSERT usage","codeDescription":"Example of using AMREX_ASSERT to verify MultiFab properties during debug builds.","codeLanguage":"c++","codeTokens":56,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/Basics.rst#_snippet_125","pageTitle":"Unknown","codeList":[{"language":"c++","code":"AMREX_ASSERT(mf.nGrow() > 0 && mf.nComp() == mf2.nComp());"}],"relevance":0.011627907,"generationDate":"2026-09-19T15:45:22.784Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Questions to answer for Advection_AmrCore","codeDescription":"These questions guide analysis of subcycling, conservation, and MPI scaling.","codeLanguage":"text","codeTokens":267,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Tests/Amr/Advection_AmrCore/README.md#_snippet_12","pageTitle":"Unknown","codeList":[{"language":"text","code":"1. How do the subcycling vs no-subycling calculations compare?\n a. How many steps did each take at the finest level? Why might this not be the same?\n b. How many cells were at the finest level in each case? Why might this number not be the same?\n\n2 What was the total run time for each calculation? Was this what you expected?\n\n3. Was phi conserved (over time) in each case?\n a. If you set do_refluxing = 0 for the subcycling case, was phi still conserved?\n b. How in the algorithm is conservation enforced differently between subcycling and not?\n\n4. How did the runtimes vary with 1 vs. 4 MPI processes?\n We suggest you use a big enough problem here -- try running\n\n mpiexec -n 1 ./main3d.gnu.MPI.ex inputs_for_scaling\n\n mpiexec -n 4 ./main3d.gnu.MPI.ex inputs_for_scaling\n\n5. Why could we check conservation by just adding up the values at the coarsest level?"}],"relevance":0.011494253,"generationDate":"2026-09-19T15:30:35.136Z","model":"deepseek/deepseek-v4-flash-0731"},{"codeTitle":"Run serial Hello World executable and output","codeDescription":"Run the default serial executable and its expected output. The version string indicates commit 5775aed933c4 based on 17.05 with 30 additional commits and a dirty working tree.","codeLanguage":"console","codeTokens":136,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/GettingStarted.rst#_snippet_1","pageTitle":"Unknown","codeList":[{"code":"./main3d.gnu.DEBUG.ex","language":"console"},{"code":"AMReX (17.05-30-g5775aed933c4-dirty) initialized\nHello world from AMReX version 17.05-30-g5775aed933c4-dirty\nAMReX (17.05-30-g5775aed933c4-dirty) finalized","language":"console"}],"relevance":0.011363637,"generationDate":"2026-09-19T15:26:40.779Z","model":"Unknown"},{"codeTitle":"Standard Fortran profiling calls: bl_proffortfuncstart/stop","codeDescription":"Use these calls to instrument a Fortran90 function with the full profiler. The start and stop calls must be matched before leaving the scope, and you may need to add stop calls in multiple locations to cover all code paths. The profiler only warns about unmatched start calls in debug mode.","codeLanguage":"fortran","codeTokens":107,"codeId":"https://github.com/amrex-codes/amrex/blob/development/Docs/sphinx_documentation/source/AMReX_Profiling_Tools.rst#_snippet_16","pageTitle":"Unknown","codeList":[{"language":"fortran","code":"call bl_proffortfuncstart(\"my_function\")\n...\ncall bl_proffortfuncstop(\"my_function\")"}],"relevance":0.011235955,"generationDate":"2026-09-19T15:26:17.153Z","model":"deepseek/deepseek-v4-flash-0731"}]}