HDF5 file recycling

[natj]

IO files are not always closed properly. See error log from below:

HDF5-DIAG: Error detected in HDF5 (1.10.1) thread 0:
  #000: H5F.c line 491 in H5Fcreate(): unable to create file
    major: File accessibilty
    minor: Unable to open file
  #001: H5Fint.c line 1279 in H5F_open(): unable to truncate a file which is already open
    major: File accessibilty
    minor: Unable to open file
HDF5-DIAG: Error detected in HDF5 (1.10.1) thread 0:
  #000: H5L.c line 869 in H5Lexists(): not a location
    major: Invalid arguments to routine
    minor: Inappropriate type
  #001: H5Gloc.c line 251 in H5G_loc(): invalid object ID
    major: Invalid arguments to routine
    minor: Bad value
python: plasmabox2/python/../vlasov/../io/../tools/ezh5/src/ezh5.hpp:392: ezh5::Node ezh5::Node::operator[](const string&): Assertion `false' failed.
HDF5-DIAG: Error detected in HDF5 (1.10.1) thread 0:
  #000: H5F.c line 491 in H5Fcreate(): unable to create file
    major: File accessibilty
    minor: Unable to open file
  #001: H5Fint.c line 1279 in H5F_open(): unable to truncate a file which is already open
    major: File accessibilty
    minor: Unable to open file
HDF5-DIAG: Error detected in HDF5 (1.10.1) thread 0:
  #000: H5L.c line 869 in H5Lexists(): not a location
    major: Invalid arguments to routine
    minor: Inappropriate type
  #001: H5Gloc.c line 251 in H5G_loc(): invalid object ID
    major: Invalid arguments to routine
    minor: Bad value
python: plasmabox2/python/../vlasov/../io/../tools/ezh5/src/ezh5.hpp:392: ezh5::Node ezh5::Node::operator[](const string&): Assertion `false' failed.
_pmiu_daemon(SIGCHLD): [NID 00113] [c0-0c1s12n1] [Sat May 18 00:09:19 2019] PE RANK 7 exit signal Aborted
_pmiu_daemon(SIGCHLD): [NID 01034] [c5-0c1s2n2] [Sat May 18 00:09:19 2019] PE RANK 647 exit signal Aborted
[NID 00113] 2019-05-18 00:09:19 Apid 20072079: initiated application termination