Question: How to make sure a task is allocated only on a single node

I'd like each task in my job to be run on a single node, however I was only able to find in the documentation the `-SingleNode` argument that applies to entire **jobs**. Is there a way to achieve this for tasks?

Also, what is the meaning of allocation of, e.g. cores, across multiple nodes for the same task? If a task is allocated 10 cores from node 1 and 20 cores from node 2 - will the exact same command line simply run twice, once on each node?

The issue names no file, test, or entry point. Start with the documentation for `-SingleNode` and the task allocation model, then verify whether per-task single-node placement is supported and clarify multi-node core allocation. Done means an authoritative documented answer covers both questions.

Written by the indexing model from the issue text.