XDMF
XDMF provides a standard way to access data produced by HPC codes. Data format refers to the raw data to be manipulated, the description of the data is separate from the values themselves. It distinguishes the metadata and the values themselves. Light data is stored using XML, Heavy data is stored using HDF5, so some information is stored redundantly in both XML and HDF5. APIs to read and write XDMF exists for multiple programing languages.