# Segmentation fault with pre.cluter

**URL:** <https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131>\
**Category:** mothur bugs\
**Created:** [September 15, 2021, 10:42am UTC](https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131 "2021-09-15T10:42:00Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Shankar](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@Shankar](https://forum.mothur.org/u/Shankar)\
**Post date:** [September 15, 2021, 10:42am UTC](https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131/1 "2021-09-15T10:42:00Z")

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I am using mothur 1.46.1 version. Every time i run pre.cluster command , I get a segmentation fault error message. However, this does not seem to be a server memory or core issue. I am running them in HPC cluster nodes with enough memory.

I have two sets of data. One with V4-V5 amplification and another with V4 alone. Both ended up having the same error.

Please help.

Thanks,  
Shankar

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**Author:** ![westcott](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.mothur.org/westcott/32/18_2.png) [@westcott](https://forum.mothur.org/u/westcott)\
**Post date:** [September 16, 2021, 5:06pm UTC](https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131/2 "2021-09-16T17:06:31Z")

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Could you send your input files and logfile to [mothur.bugs@gmail.com](mailto:mothur.bugs@gmail.com)?

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**Author:** ![Shankar](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@Shankar](https://forum.mothur.org/u/Shankar)\
**Post date:** [September 16, 2021, 5:28pm UTC](https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131/3 "2021-09-16T17:28:56Z")

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Hi Sarah,

Just sent the logfiles to [mothur.bugs@gmail.com](mailto:mothur.bugs@gmail.com).

Thanks,  
Shankar

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**Author:** ![system](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.mothur.org/system/32/2_2.png) [@system](https://forum.mothur.org/u/system)\
**Post date:** [September 26, 2021, 5:29pm UTC](https://forum.mothur.org/t/segmentation-fault-with-pre-cluter/21131/4 "2021-09-26T17:29:43Z")

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