Individual or population level variant calling?

nb82nb82 United StatesMember

I have a non-technical question: What is the advantage of performing a population-level variant calling (samples for all sub-species concurrently) as opposed to individual level (one sample at a time)? What additional info is provided in the former case?
Also, I have to do this for ~3000 samples. Is it feasible to perform population level variant calling for all 3000 concurrently? Will it take 3000-times longer than a single-sample?
Thanks in advance,

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