[ome-users] Question on "omero admin removepyramids"

[Sascha Neinert]

Dear Mark,

thanks for the explanation! Indeed those are big endian pyramids, understood.

Best regards, Sascha

--
Sascha Neinert
CECAD RRZK IT Service
Regional Computing Center (RRZK)
University of Cologne
Phone: +49-221 478-84051 / +49-221 470-89624
Mail: sascha.neinert at uni-koeln.de





> Am 23.04.2018 um 12:04 schrieb Mark Carroll <m.t.b.carroll at dundee.ac.uk>:
> 
> On 04/20/2018 01:01 PM, Sascha Neinert wrote:
> 
>> to simplify i look at one image only that i have imported twice into the
>> same server instance:
> 
> Good idea.
> 
>> 1) ID as shown in OMERO.web = 823 and import date = 2018-02-21 11:54:19,
>> there is one file …/Pixels/823_pyramid of size 32 MB, time stamp is Feb
>> 21 12:55
>> 2) ID as shown in OMERO.web = 958, there is also one file
>> …/Pixels/958_pyramid but of size 16 MB
> 
> I can confirm that I see that same pyramid size difference with your
> image between the two OMERO versions. I'm further guessing that your two
> images are owned by the same user and in the same group.
> 
>> In both cases the table pixels has the same value for ‚id‘ and for
>> ‚image‘, so i guess that the pyramid files i found are the corresponding
>> ones.
> 
> That's plausible but don't assume it will be the case for future images. (-:
> 
>> I do not really know how to interpret this behaviour - it could be
>> harmless and/or working as intended, it just seemed somehow unusual to
>> me.
> 
> Your original post mentioned using the --endian=little option. In my
> experiments the 5.4.0 server gives your image what it detects as being a
> big-endian pyramid and in 5.4.5 a little-endian one. If you try your
> command with --endian=big then I bet you see 823 come up. If you do
> delete that old one then when you try to view the image OMERO will
> create a new little-endian pyramid for it.
> 
> -- Mark
> 
> The University of Dundee is a registered Scottish Charity, No: SC015096
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