Hi,
I have realised compression tests from only HDF5 library.
In these tests the size of chunks are varied in the following way:
1) Firstly, I have changed the size of chunks with even values: 10*10,
12*12, 14*14, 16*16, etc;
2)Secondly, I have modified the size of chunks with odd values: 11*11,
13*13, 15*15, 17*17, etc.
I have got 2 graphic lines. Please find enclosed the file called
"dataset_square_sdisk_pair_impair_1000.png"
The x numbers are the size of chunks in octets.
The y numbers are the size of file in the disk in bytes
-The red line represents chunks with an even size (10*10,12*12,...);
-The green line represents chunks with an odd size (11*11, 13*13, etc).
My question is: Do we have a reason that would explain why we observe
a better performance in the disk storage with chunks of an even size
that an odd size ?
Thanks you,
Rolih
_______________________________________________
Hdf-forum is for HDF software users discussion.
[email protected]
http://lists.hdfgroup.org/mailman/listinfo/hdf-forum_lists.hdfgroup.org
Twitter: https://twitter.com/hdf5
