Temporary files storage and Batch processing on Orbit

HI All,
using Orbit for processing very large files (whole scanned slides), the software managed to “eat” >150GB of memory of the harddrive in the space of 3h, while processing 7 files.
I found the place where temporary files were stored and then removed them. Is there a setting that needs changing to avoid this problem or a way to direct those temporary files someqhere else, if they are unavoidable?
Moreover, the loaded model is unable to start processing the slides when the Batch comman is given.
Any help is welcome, thanks in advance

Hi Ema,

Can you share a bit of info on the image size (e.g. x and y pixel size, number of channels).

How are you processing the files?

Also how much memory does your machine have available? Are you using it all (see here for details: Orbit memory settings)



Dear @Emasan,

thanks for using Orbit.
As Jon suggested, can you please provide more details, e.g. what kind of model are you running (classification, segmentation… ?).

Are you using the Batch processing or are you processing the files within the UI?

The huge amount of memory should not be needed and should be obsolete for batch processing.
In case you really want to switch the temp folder:

Start Orbit from command line via

java -XX:MaxPermSize=150m -Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl -cp "build/libs/orbit-image-analysis.jar;build/libs/lib/*" com.actelion.research.orbit.imageAnalysis.components.OrbitImageAnalysis

(you might have to change build/libs/lib to /lib depending on which distribution you have)
and add
to set a different temp dir.


Dear Manuel and Jon,
thanks for your reply.
In brief:
-I am running both classification and segmentation
-I am analysing 2GB sized whole scanned slides at 40x
-I am analysing DAB IHC with hematoxilin nuclear counterstain, but still leaving the default settings (on th right column, Adjustments) : clor deconvolution H&E. Does this parameter need changing for each invidually processed scanned slide? Would this accelerate or improve computation?

  • analysis of individual files no problematic, but query of Batch measurement elicits no progress or action.
  • the sudden drop in hard drive space due to storage of tile files only happens if I ask Orbit to analyse 4 whole scanned slides at the same time. I will try your approach
  • I have a CPU AMD Ryzen 9 12 core, 32 GB RAM, NVidia Gforce 1660 6GB and 250GB of SSD as hard drive
    -generation of a model for both classification and segmentaton: “a walk in the park”
    -Classification: ~40min for entire scanned slide (with exclusion model as well) using 4 classes
    -Segmentation: No possible on entire slide, which is my concern. To overcome the issue, as I write, I am drowing annotation of set size and using as ROI (10 at 5000pxl size x each scanned slide in specific anatomic areas)
    -RAM memory usage reaches spikes of 70% of tatal available
    I hope this answers some of your queries
    PS: Thanks for the assistance and for the lovely Software :slight_smile: