[ET Trac] [Einstein Toolkit] #1030: defer (re)opening checkpoint files until we need to

#1030: defer (re)opening checkpoint files until we need to --------------------------+------------------------------------------------- Reporter: rhaas | Owner: eschnett Type: enhancement | Status: new Priority: minor | Milestone: Component: Carpet | Version: Keywords: CarpetIOHDF5 | --------------------------+------------------------------------------------- this patch defers opening checkpoint files until we need to do so because either we need to browse them or open a dataset for reading. This speeds up open_one_file_at_a_time since it will not open a hdf5 file that was already parsed and does not contain useful datasets.