As I have read the conversation regarding this error, but couldn’t get the answer. I am also facing the same problem while running "Pre.cluster Segmentation fault (core dumped) error " in mothur pipeline for 16s data analysis.
what OS, what version of mothur, how many processors and how much ram?
Ubuntu 18.04.1 LTS, I used 12 processors first. n its 32gb ram
Most likely you need to drop the processors to 2 or 4 if you only have 32gb ram.
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