Is there a hard limit on the number of parallel instances that can be run in ArcGIS Pro when setting up an imagery project? I was following the Imagery Workflows tutorial for the imagery processing with my own dataset, and it recommends setting the PPF to 100%. When I did this with my own dataset it throws the following error:
Error 8004819c: Could not initialize the mosaic dataset's parallel processing engine
With some trial and error, it looks like it will fail if more than 56 parallel instances are initiated with the mosaic dataset. This might be related to BUG-000165531, if so, the work around can probably be updated to be 56.
This was actually a tricky one to diagnose. During my testing I reduced the size of my dataset and discovered that if there are a low number of input images loaded in, ArcGIS Pro doesn't parallelise the mosaic dataset operations making any PPF value pass. I noticed that it didn't happen with 89 images, but when I increase my dataset up to 141 images it kicked back in.
I'd also be interested to know if this value can be increased back up to 100% via the GUI for later stages of the photogrammetry processing workflow.
