Hi,
We have a strange case:
2D classification went OK until half-way through iter 3 with no warning messages (except for few small groups as usual). Then it crashed due to memory issues on the cluster, and when we re-started the job as a continuation of first run, we got a lot of warnings like this:
WARNING: norm_correction= 257.142 for particle 7760 in group 161; Are your groups large enough?
But in the first run Relion went past this stage with no such messages. What could be a reason for this? I guess one difference is that in the first run norm_correction was presumably done in iter 0, while here in iter 3, but that should not matter...
Many thanks!
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