Controlling Parameters

Parameters

title

Title of the computation to be used for the output filename.

odir

Name of output directory. This is a relative directory path from the location of the program execution. If this directory does not exist at the time of run, OpenSWPC will automatically create it.

ntdec_r

Number of Time-step DECimation factors for screen Reporting. The maximum amplitudes of the velocity components are reported in the standard error output every ntdec_r steps. This screen output is generally used to confirm that the model is working correctly. A cycle that is too short (this parameter is too small) may slow down the computation.

stopwatch_mode

Measure the computation times at major subroutines and export the accumulated times to (odir)/(title).tim. This function is used for benchmarking and perforance tuning. The output *.tim file can be visualized with GMT (versions 4 or 5) via tools/timvis.gmt?.

benchmark_mode

If this flag is .true., the fixed homogeneous medium and single-point moment tensor source will be selected irrespective of the parameter specification. This is used for validation and performance measurements.

strict_mode (New in v5.1)

If this flag is .true., the all necessary parameter must be explicitly written in the input file. By default this parameter is set to .false., so that OpenSWPC will use parameter-specific default values if the parameter is not found in the input file.

ipad, jpad, kpad

Expand the Fortran array sizes along the x-, y-, and z-directions. In some computer architectures, the computation speed is very sensitive to the array size. In such cases, slightly changing the array size using these parameters may improve the performance. The expanded array will not be used for the simulation. Therefore, the simulation result is not affected by changing this option.

Benchmark Mode

Until version 5.0.2, an example input file example/input.inf contained benchmark_mode = .true. which neglects many changes of parameters related to velocity structure and earthquake source. After version 5.1, this parameter is set to .false. in the example file.