Checkpointing - Internals

• Write periodic ckpt.

• Upon restart:

  • Check for ckpt. file
  • If it exists, restart from it.
  • All tasks on to-do list at start.

Checkpoint file:

MWDriver internal info

write_master_state()

write_ckpt_info() of

all tasks on the

running list

write_ckpt_info() of

all tasks on the

to-do list

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