Ab-initio job: Detected Nan values in engine.error 31337280 in total. 90 particles with Nan

3D Reconstruction
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I got that error launching the ab-initio after many iterations. What could it be due to?

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Please can you post

  1. the version of CryoSPARC you are using
  2. the final 30 lines of the event log
  3. the non-default parameters of the failed job
  4. the results of a Check for Corrupt Particles job with the Check for NaN values option
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Hi, I am encountered with the same problem, and the particle stack is from EMPIAR-10278. All the parameters of Ab-initio job are default. The Check for Corrupt Particles job with the Check for NaN values option ran successfully. And can you explain that why my Ab-initio job fail? Thanks.(the version:v4.6.0)

1 Like
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Hi @chengyr1999,

The check for corrupt particles job doesn’t fail if it founds NaN values, it just emits a warning, and a short summary at the end of the stream log which lists any files that had NaN values. If you’re able to, could you please check the log of the check for corrupt particles job for any such warnings?

– Harris

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Hi @chengyr1999,

Your input would be very valuable to us as we try to identify the root cause of these NaN value issues. If you have time to respond to my previous query, we would be grateful.

–Harris