Example for Info Output

The following parameter settings request info output for variables grid::r, wavetoy::phi (both are CCTK grid functions) and mythorn::complex (a complex CCTK scalar) at every other iteration.

The minimum and maximum of grid::r is printed according to the list of default reductions for info output (parameter IOBasic::outInfo_reductions). This list is overridden for wavetoy::phi where only the L2 norm is output as specified in the option string for this variable. You can also add other reduction operators within the $\{\}$ braces.

For the scalar variable mythorn::complex both the real and imaginary part are printed.

  IOBasic::outInfo_every      = 2
  IOBasic::outInfo_vars       = "grid::r
                                 wavetoy::phi{reductions = 'norm2'}
                                 mythorn::complex"
  IOBasic::outInfo_reductions = "minimum maximum"

The resulting screen output would look like this:

---------------------------------------------------------------------------------------------
  it  |          | GRID::r                     | WAVETOY::phi | MYTHORN::complex            |
      |    t     | minimum      | maximum      | norm2        | real part    | imag part    |
---------------------------------------------------------------------------------------------
    0 |    0.000 |   0.02986294 |   0.86602540 |   0.04217014 |   6.90359593 |   0.00000000 |
    2 |    0.034 |   0.02986294 |   0.86602540 |   0.00934749 |   6.90359593 |   0.00000000 |
    4 |    0.069 |   0.02986294 |   0.86602540 |   0.02989811 |   6.90359593 |   0.00000000 |
    6 |    0.103 |   0.02986294 |   0.86602540 |   0.05899959 |   6.90359593 |   0.00000000 |
    8 |    0.138 |   0.02986294 |   0.86602540 |   0.07351147 |   6.90359593 |   0.00000000 |
   10 |    0.172 |   0.02986294 |   0.86602540 |   0.07781795 |   6.90359593 |   0.00000000 |