[MeL/IO] HDF5: Specify chunk size in bytes
Problem
- Simulation stopped at Output section (when using XDMF and HDF5) when having
- large datasets and large number of simulation steps combined.
- 1e6 cells, 240000 points over 8100 steps.
Fixes in this MR
chunk size bytes parameter for performance tuning (only needed for HPC)
- Introduction of chunk_size_bytes parameter as consequence of studies on Taurus together with Holger Brunst
- Changes haven been to be studied on Taurus using ScoreP. All details in overview: Ogs-isc-poster-2023.pdf. Still open after this MR is addressing the problem of "static file size" described in the paper.
Writing metadata collectively
- Followed recommendation discussed in https://forum.hdfgroup.org/t/h5dwrite-fails-for-larger-data-and-or-smaller-chunks/11677
Edited by Tobias Meisel