triqs_modest.utils.checkpoint.Checkpointer.restart

Checkpointer.restart() → IterationData | None

Return last iteration data on all MPI ranks, or None if empty.

Collective operation — all ranks must call this together. Master reads from disk; components (mu, Sigma_imp_list, Sigma_hartree_list) are broadcast individually to all ranks.

Returns:

IterationData or None

Last stored iteration on all ranks, None if no iterations exist.