Idea #21997
Updated by Peter Amstutz 11 days ago
Sometimes spot instances are not available, but we don't want to sacrifice turnaround time by waiting excessively long time for spot instance price/availability to come down. In that case, the user would like fall back on requesting a regular on demand instance.
Consider how the user should request this behavior (this should probably be controllable per-workflow), and what conditions Arvados decides to fall back to on demand.
Thought: could be done by adding on demand instances to the list of candidate instance types after trying all the spot instance types.