Sidecar braket#16
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In this design, when a gang is scheduled only the first works as a probe to dispatch the quantum work. A sidecar that matches the vendor can monitor the queue, and ungate the rest of the pods in the N-1 group when ready. This way, we are not consuming resources (and wasting them). Signed-off-by: vsoch <vsoch@users.noreply.github.com>
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this will ensure they will be scheduled quickly when ungated, since there is no real concept of a reservation. Signed-off-by: vsoch <vsoch@users.noreply.github.com>
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This will need a lot of tweaking, but the idea is that we dispatch a probe pod for a gang that matches a backend (like Braket or qrmi) and then can use the API to determine when we are close in the queue to running. Close means we can ungate the rest of the group pods for scheduling. Given a higher priority in Kubernetes, if they are not able to be scheduled on the first pass, Kubernetes priority plugin will cancel lesser pods (pre-emption) so they can be scheduled on the next pass.
Gotta run - will pick up on this when I'm back at keyboard.