On the branch refactor/resume, the cost per timestep after resuming increases. I test for several cases, it happened when multi-tasks per node are used. The following is the time per timestep for my case. The more nodes, the more serious.
|tasks per node||1||2||1||2||1||2|
|time per timestep (s)||7.537||4.150||4.252||2.261||1.660|
|time per timestep of resume (s)||7.554||4.618||4.088||3.429||3.418|