Axel Huebl

Hi @pgrete, do you have `openpmd-api` installed? https://openpmd-api.readthedocs.io/en/0.15.2/install/install.html openPMD-api is the backend we use to read ADIOS2 BP files. What is the producing code of your ADIOS2 BP files? Is...

It looks to me like you did some editing along the lines ``` --> 116 self.series = io.Series( 117 series_name, 118 #"opmd.%T.bp, 119 io.Access.read_only ) ``` of `openpmd_viewer/openpmd_timeseries/data_reader/data_reader.py` aka https://github.com/openPMD/openPMD-viewer/blob/4aac40b4b932e0a8098b32de69d6e95342020879/openpmd_viewer/openpmd_timeseries/data_reader/data_reader.py#L114-L119...

Thanks for the report! Let's dig into this, could be a bug on our end, an HDF5 bug or an MPI-I/O bug. Your [comment here](https://github.com/openPMD/openPMD-api/issues/1423#issuecomment-1509430878) makes me suspect a ROMIO...

@s-sajid-ali can you double check the same issue appears with HDF5 1.12.2? HDF5 1.14.0 is relatively new with major upgrades in the Virtual Object Layer (VOL) and this might be...

> The issue is that want Synergia to be usable on as wide variety of platforms as possible. While NFS mounted disks are not recommended for parallel IO, that might...

@s-sajid-ali can you potentially add some printf debugging to the writes of `/data/0/particles/track_coords/moments/x`? Is there something special about it, e.g., writing zero particles in a chunk or similar? Which chunks...

> The [UnifyFS docs](https://camstan-test-docs-unifycr.readthedocs.io/en/latest/limitations.html#romio-driver-hint) seem to mention setting ROMIO hint romio_synchronizing_flush as a more efficient alternate method to achieve the same. Is this something that could be used as a...