Checkpoint

class Checkpoint

Save the state of a class in memory by writing to disk, such that the checkpoint file can be later read to restart the simulation. Note that for OMP or parallel simulations, the number of hours is multiplied by the number of threads.

To restart a simulation from a checkpoint file, checkpoint.fst, use the following BASH command:

echo “Restart checkpoint.fst” | feasst

See Restart for more available options.

Arguments

• num_hours: Number of hours between printing of checkpoint file (default: 1).

• num_hours_terminate: Terminate after this many hours. If -1, do not terminate (default: -1). Termination may be detected in Bash shell using “$? != 0”.

• checkpoint_file: The file name to output the Checkpoint file.

• writes_per_backup: Create a unique checkpoint file name every this many times that a checkpoint is written (default: -1). If -1, only backup the previous file by appending its name with “.bak”. Otherwise, if > 0, append each backup with an integer count beginning with 0.