Runtime Parameters Documentation for FLASH Release 4.6.1


IO/IOMain
    alwaysComputeUserVars [BOOLEAN] [true]
        Allows the user to force the computation of user variables (i.e. those
        computed by Grid_computeUserVars) for all checkpoint files.  Defaults to
        true.  If set to false, lone calls to IO_writeCheckpoint will not call
        Grid_computeUserVars.  Plotfiles always call Grid_computeUserVars.
    alwaysRestrictCheckpoint [BOOLEAN] [true]
        Allows the user to choose whether checkpoint file data is always
        restricted, so all ancestor blocks have valid data. The default is true.
        It can be set to false for debugging purposes, in which case only the
        data from IO_output will be guaranteed to have fully restricted data. 
        See the User's guide for more information.
    basenm [STRING] ["flash_"]
        Valid Values: Unconstrained
        Base name for checkpoint files
    checkpointFileIntervalStep [INTEGER] [0]
        Valid Values: Unconstrained
        Checkpoint after this many steps
    checkpointFileIntervalTime [REAL] [1.]
        Valid Values: Unconstrained
        Checkpoint after this much time
    checkpointFileIntervalZ [REAL] [HUGE(1.)]
        Valid Values: Unconstrained

    checkpointFileNumber [INTEGER] [0]
        Valid Values: Unconstrained
        Initial checkpoint file number (used for restarts as well)
    chkGuardCellsInput [BOOLEAN] CONSTANT [FALSE]
        if true guardcells are read from the checkpoint file. Default is false
        where only interior cells are read. Currently only implemented with hdf5
        parallel paramesh IO implementation
    chkGuardCellsOutput [BOOLEAN] CONSTANT [FALSE]
        if true guardcells are written the checkpoint file. Default is false
        where only interior cells are written. Currently only implemented with
        hdf5 parallel paramesh IO implementation
    corners [BOOLEAN] [FALSE]
        does nothing.  However, it is part of the checkpoint file specification,
        so we retain the checkpoint entry, but force it to be .false.. It was
        used in FLASH2 to interpolate the data to the zone corners before
        storing the data in the plotfile (for creating improved iso-surfaces).
    fileFormatVersion [INTEGER] [9]
        Valid Values: Unconstrained
        Integer value specifying the file format type
    forcedPlotFileNumber [INTEGER] [0]
        Valid Values: Unconstrained

    ignoreForcedPlot [BOOLEAN] [false]

    io_writeMscalarIntegrals [BOOLEAN] [FALSE]
        Should density integrals for all mass scalars be written to the
        stats_file (.dat file)?  This runtime parameter is handled in the
        default IO_writeIntegralQuantities implementation in IOMain, and may
        have no effect if a simulation overrides that implementation.
    memory_stat_freq [INTEGER] [100000]
        Valid Values: Unconstrained
        Specify the number of timesteps between memory statistic dumps to
        flash.log !!NOT Yet Implemented in F3
    outputSplitNum [INTEGER] [1]
        Valid Values: Unconstrained
        Split checkpoint, plotfiles, particle plots into this many files per
        dump Not fully implemented, only hdf5 parallel. use at own risk
    output_directory [STRING] [""]
        Valid Values: Unconstrained
        output dir for checkpoint file, can be absolute or relative path
    plotFileIntervalStep [INTEGER] [0]
        Valid Values: Unconstrained
        Write a plotfile after this many steps
    plotFileIntervalTime [REAL] [1.]
        Valid Values: Unconstrained
        Write a plotfile after this much time
    plotFileIntervalZ [REAL] [HUGE(1.)]
        Valid Values: Unconstrained
        Write a plotfile after this change in z
    plotFileNumber [INTEGER] [0]
        Valid Values: Unconstrained
        Initial plot file number
    plot_grid_var_1 [STRING] ["none"]
        Valid Values: Unconstrained
        Allows user to output specific scratch grid vars Up to 12 choices are
        allowed.  If plot_grid_var_X is set to "none" then no variable will be
        saved. The parameter should have the same name as the variable
        corresponding to it. For exampe, if a variable is declared GRID_VAR
        vrtz, to write that grid variable to a plotfile a parameter should be
        declared as PARAMETER plot_grid_var_X STRING "vrtz"
    plot_grid_var_10 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_11 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_12 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_2 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_3 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_4 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_5 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_6 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_7 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_8 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_grid_var_9 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_1 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_10 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_11 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_12 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_2 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_3 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_4 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_5 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_6 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_7 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_8 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_9 [STRING] ["none"]
        Valid Values: Unconstrained

    plot_var_, for N=1..MAX_PLOT_VARS [STRING] ["none"]
        Valid Values: Unconstrained
        (automatically generated by setup)
    plotfileGridQuantityDP [BOOLEAN] [false]
        If true, this sets the grid variables (unk, facevars, etc.) to be output
        in double precision in plotfiles. Default value is false.
    plotfileMetadataDP [BOOLEAN] [false]
        Sets the floating point grid metadata fields to be written in double
        precision if true in plotfiles.  Default value is false
    prof_file [STRING] ["profile.dat"]
        Valid Values: Unconstrained
        !!NOT yet implemented yet in F3
    rolling_checkpoint [INTEGER] [10000]
        Valid Values: Unconstrained
        Checkpoint file number cycling span. Only the last rolling_checkpoint
        files are kept.
    rss_limit [REAL] [-1.0]
        Valid Values: Unconstrained
        Maximum value (in MB) of largest resident set size (rss) before we
        checkpoint and exit. Negative for no limit.  Only active if memory
        statistics are being kept.
    stats_file [STRING] ["flash.dat"]
        Valid Values: Unconstrained
        Name of the file integral quantities are written to (.dat file)
    summaryOutputOnly [BOOLEAN] [false]
        Makes FLASH write integrated quantities, i.e. summary data, only. FLASH
        will only write a checkpoint, plot, or particle file if the user creates
        a .dump_plotfile, .dump_checkpoint, .dump_restart, or
        .dump_particle_file file.  A .kill file will still kill FLASH.
    typeMatchedXfer [BOOLEAN] [true]
        Ensures that floating point data transfers are type matched when using
        HDF5.  This prevents HDF5 reverting to independent parallel I/O.
    useCollectiveHDF5 [BOOLEAN] [true]
        If true, all non-header, non-list datasets will be written using HDF5's
        collective output mode otherwise, the independent access mode is used. 
        Default value is true.
    useLegacyLabels [BOOLEAN] [true]
        If true, this stores mesh labels e.g. 'dens', 'pres' in a IO library
        dataspace of 4 characters.  We may want to set it to false to use larger
        labels e.g. 'density'
    wall_clock_checkpoint [REAL] [43200.]
        Valid Values: Unconstrained
        Checkpoint after XX seconds (wallclock time) This is useful to ensure
        that the job outputs a restart file before a queue window closes.
    wr_integrals_freq [INTEGER] [1]
        Valid Values: Unconstrained
        Number of timesteps between writing to flash.dat

IO/IOMain/hdf5/parallel/PM
    chkGuardCellsInput [BOOLEAN] [false]
        if true guardcells are read from the checkpoint file. Default is false
        where only interior cells are read. Currently only implemented with hdf5
        parallel paramesh IO implementation.
    chkGuardCellsOutput [BOOLEAN] [false]
        if true guardcells are written the checkpoint file. Default is false
        where only interior cells are written. Currently only implemented with
        hdf5 parallel paramesh IO implementation.

IO/IOMain/hdf5/parallel/PM_argonne
    packMeshChkReadHDF5 [BOOLEAN] [false]

    packMeshChkWriteHDF5 [BOOLEAN] [false]

    packMeshPlotWriteHDF5 [BOOLEAN] [true]
        If true, this specifies that we pack the

IO/IOMain/pnetcdf/typeSelection
    asyncMeshChkReadPnet [BOOLEAN] [false]

    asyncMeshChkWritePnet [BOOLEAN] [false]

    asyncMeshPlotWritePnet [BOOLEAN] [false]
        If true, this uses non blocking I/O writes

IO/IOParticles
    particleFileIntervalStep [INTEGER] [0]
        Valid Values: Unconstrained
        write a particle file after this many steps
    particleFileIntervalTime [REAL] [1.]
        Valid Values: Unconstrained
        Write a particle plot after this much time
    particleFileIntervalZ [REAL] [HUGE(1.)]
        Valid Values: Unconstrained
        write a particle file after this change in redshift
    particleFileNumber [INTEGER] [0]
        Valid Values: Unconstrained
        Initial particle plot file number
    writeParticleAll [BOOLEAN] [true]
        Write the complete particles array to a particle file.
    writeParticleSubset [BOOLEAN] [false]
        Write user-defined subset(s) of the particles array to