Out-of-core calculations with md.iterload()

An error occurred while executing the following cell: ------------------ first_frame = md.load_frame(traj_filename, 0) first_frame ------------------ --------------------------------------------------------------------------- OSError Traceback (most recent call last)  in  ----> 1 first_frame = md.load_frame(traj_filename, 0)  2 first_frame /d/nyc/mcgibbon-0/garden/CentOS7/prefixes/mdtraj/1.9.4-01c7/lib/python3.7/site-packages/mdtraj/core/trajectory.py in load_frame(filename, index, top, atom_indices, **kwargs)  308   309 if loader.__name__ not in ['load_dtr']: --> 310 _assert_files_exist(filename)  311 else:  312 _assert_files_or_dirs_exist(filename) /d/nyc/mcgibbon-0/garden/CentOS7/prefixes/mdtraj/1.9.4-01c7/lib/python3.7/site-packages/mdtraj/core/trajectory.py in _assert_files_exist(filenames)  98 for fn in filenames:  99 if not (os.path.exists(fn) and os.path.isfile(fn)): --> 100 raise IOError('No such file: %s' % fn)  101   102  OSError: No such file: data/frame0.h5 OSError: No such file: data/frame0.h5

(iterload.ipynb; iterload_eval.ipynb; iterload.py)