Checkpointing & Recovery

Thorn IOStreamedHDF5 can also be used to create HDF5 checkpoints and stream them to another Cactus simulation which recovers from such a checkpoint at the same time.

Checkpoint routines are scheduled at several timebins so that you can save the current state of your simulation after the initial data phase, during evolution, or at termination. Checkpointing for thorn IOStreamedHDF5 is enabled by setting the parameter IOStreamedHDF5::checkpoint = "yes".

A recovery routine is registered with thorn IOUtil in order to restart a new simulation from a given HDF5 checkpoint.

Checkpointing and recovery are controlled by corresponding checkpoint/recovery parameters of thorn IOUtil (for a description of these parameters please refer to this thorn's documentation).