# Advanced

## Testing / debugging

The following inputs must be preceded by “mfix.”

| Description | Type | Default
--- | --- | --- | ---
verbose | Verbosity in MFIX-Exa routines | Int | 0
ooo_debug | If true then print the name of the routine we are in | Bool | False
only_print_grid_report | Do not time-march the simulation. Simply generate the grid report and exit. | Bool | False False

The following inputs must be preceded by “amrex.”

| Description | Type | Default
--- | --- | --- | ---
fpe_trap_invalid | Abort if an invalid floating point exception is encountered. | Int | 0
fpe_trap_zero | Abort if a division by zero is computed. | Int | 0
fpe_trap_overflow | Abort if and overflow is detected. | Int | 0

## GPU memory

The following inputs must be preceded by “amrex.”

| Description | Type | Default
--- | --- | --- | ---
the _arena_is_managed | Abort if an invalid floating point exception is encountered. | Int | 0
abort_on_out_of_gpu_memory | rt if a division by zero is computed. | Int | 0
the_area_init_size | Abort if and overflow is detected. | Int | 0