[Rd] confint Attempts to Use All Server CPUs by Default

[Dario Strbenac]

Hello,

Would a less resource-intensive value, such as 1, be a safer default CPU value for confint? I noticed excessive CPU usage on a I.T. administrator-managed server which was being three-quarters used by another staff member when the confidence interval calculation in an R Markdown document suddenly changed from two seconds to ninety seconds because of competition for CPUs between users. Also, there is no mention of such parallel processing in ?confint, so it was not clear at first where to look for performance degradation. It could at least be described in the manual page so that users would know that export OPENBLAS_NUM_THREADS=1 is a solution.

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Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia