A Tuesday 22 December 2009 16:31:50 Neil Fortner escrigué: > Francesc, > > This may be a bit late, but have you looked at the documentation for > H5Pset_chunk_cache? The parameters there are the same, but the > descriptions are more thorough. Due to the (simplistic) hashing > algorithm, rdcc_nelmts should be a prime number and should probably be > larger than 256 - the default in HDF5 is 521 (not 512) and I believe > that is too small in many cases. There is very little downside the > setting a larger hash table.
Thanks Neil. Yes, H5Pset_chunk_cache() doc is much better (frankly, I did not know it). Next time will tune this number further. I plan to do some benchmarks for some common use cases and set this number accordingly. -- Francesc Alted _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
