Charlie,
Can you describe what changed in your setup to produce correct chunking? Have
you also tested Windows NCO?
--
Kind regards,
Antonio Rodriges
Charlie Zender <zender@xxxxxxx>
>Group,
>
>Please ignore my warning on 20141029 about unreadable files after
>chunking with NCO, nccopy, and h5repack. Although chunking can create
>unreadable files in some circumstances, the specific problems that I
>reported were false positives, i.e., I incorrectly diagnosed them.
>NCO, nccopy, and h5repack work well for the examples given (below).
>An unlikely coincidence of issues fooled my diagnosis with ncwa.
>I'll try to be more thorough/careful before responding about potential
>problems on this list. Apologies for any inconvenience this caused.
>
>cz
>
>zender@roulee:~$ time ncks -O -4 --cnk_dmn latitude,4 --cnk_dmn
>longitude,4 --cnk_dmn time,512 ~/2014.nc ~/2014_ch_ncks.nc
>real 2m27.044s
>user 0m39.915s
>sys 1m40.638s
>zender@roulee:~$ time nccopy -c time/512,latitude/4,longitude/4
>~/2014.nc ~/2014_ch_nccopy.nc
>real 2m27.931s
>user 0m39.730s
>sys 1m42.749s
>zender@roulee:~$ ncks -O -4 ~/2014.nc ~/2014.nc4
>zender@roulee:~$ time h5repack -l u10m:CHUNK=512x4x4 -i ~/2014.nc4 -o
>~/2014_ch_h5repack.nc
>real 0m2.907s
>user 0m0.479s
>sys 0m0.515s
>zender@roulee:~$ ncwa -O ~/2014_ch_ncks.nc ~/foo.nc
>zender@roulee:~$ ncwa -O ~/2014_ch_nccopy.nc ~/foo.nc
>zender@roulee:~$ ncwa -O ~/2014_ch_h5repack.nc ~/foo.nc
>zender@roulee:~$
