[hdf-forum] Advice on way to write HDF file for optimal reading.

Andrew Cunningham andrewc at mac.com
Wed Oct 29 18:52:13 EDT 2008


HI Neil,
	The situation is 'write-once'/'read-often'.	 That is, the HDF file  
will be written in column order in one data-translation operation and  
closed ( no-compression), then later opened ( and kept open) with  
reading of non-contiguous blocks of rows.

Andrew


On Oct 29, 2008, at 3:10 PM, nfortne2 at hdfgroup.org wrote:

> The best way to do this depends on your priorities for performance.   
> The most important parameters imfluencing read and write performance  
> here are the chunk dimensions, and the raw data chunk cache (rdcc)  
> configuration.  Are you using any compression on the dataset?  The  
> following advice assumes you are not:
>
> T

Andrew

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