🐛 Fix dictionary changed size Error

[shaneahmed]

• Fix dictionary changed size error in 08-nucleus-instance-segmentation and 09-multi-task-segmentation
• Changing num_loader_workers=0 and num_postproc_workers=0 fixes the error on Colab.
• 09-multi-task-segmentation fails to load tmp\sample_tile_results\0.raw.0.npy still fails which is not saved.

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[shaneahmed]

09-multi-task-segmentation fails to load tmp\sample_tile_results\0.raw.0.npy still fails which is not saved.

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[John-P]

I noticed that you have set the worker subprocesses to 0 in the notebooks. However, is this really addressing the root cause of the issue? I believe we should be able to use more workers in the notebooks. Is this just a temporary solution?

[shaneahmed]

I noticed that you have set the worker subprocesses to 0 in the notebooks. However, is this really addressing the root cause of the issue? I believe we should be able to use more workers in the notebooks. Is this just a temporary solution?

I have tested this locally with multiple Python versions on Windows and Ubuntu with num_workers=4, 16 and it works fine. Something failing with multiprocessing on Colab.