Hi Barbara and Pedro.
I can send the file, no problem, I just don’t think it would solve anything.
Let me try to rephrase my question:
In your faq : https://support.hdfgroup.org/HDF5/hdf5-quest.html#p5comp
You state that a file can not be saved in parallel with compression (which in my case would be optimal but i understand the difficulties).
However, if i already have an uncompressed hdf5 file (which can be written fast), i can then rewrite that to its compressed version, but that only uses one thread. Is it possible to do this in parallel?
If neither is the case then i’m not sure i understand the “Parallel Filtered Dataset Writes: yes” flag.
It looks like you wrote something about it here barbara - Parallel Compression Support Detection but to me it is not clear if the user wants to write or read a hdf5 file in parallel.
best regards