Calculate the sum of the computational duration of a JointAI object
sum_duration(object, by = NULL)
object of class JointAI
optional grouping information; options are NULL
(default) to
calculate the sum over all chains and runs and both the adaptive
and sampling phase, "run"
to get the duration per run,
"phase"
to get the sum over all chains and runs per phase,
"chain"
to get the sum per chain over both phases and all runs,
"phase and run"
to get the sum over all chains, separately per
phase and run.