# Parallel Processing Problems

**URL:** <https://isgw-forum.colorado.edu/t/parallel-processing-problems/878>\
**Category:** Day 6\
**Created:** [June 10, 2026, 2:13pm UTC](https://isgw-forum.colorado.edu/t/parallel-processing-problems/878 "2026-06-10T14:13:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![anonymous](https://isgw-forum.colorado.edu/letter_avatar_proxy/v4/letter/a/8491ac/32.png) [@anonymous](https://isgw-forum.colorado.edu/u/anonymous)\
**Post date:** [June 10, 2026, 2:13pm UTC](https://isgw-forum.colorado.edu/t/parallel-processing-problems/878/1 "2026-06-10T14:13:16Z")

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I have had issues with the parallel = TRUE flag. No issues when parallele = FALSE. But when I put it to TRUE it just keeps hanging, even though I have 20 cores available.

> Replying to “I have had issues with the parallel = TRUE flag. N…”:

have a chat to your sysadmin, especially if you have a queuing system

> Replying to “I have had issues with the parallel = TRUE flag. N…”:

Okay, but just to follow up. I have had no issues when running commonfactorGWAS() with the parallel=TRUE flag in the precisely same setup.