Concurrent experiments

AsyncClient has the same operations as Client. Await ordinary methods. Use async for with iterator/event-stream methods. Bound concurrent submission and polling to avoid an unbounded number of API calls.

Save the complete Python example as async_sweep.py in your current directory. Example scripts are not installed by pip. Then run:

python async_sweep.py --run-id experiment-001 --budget-per-run 5

This submits three self-contained workloads and permits two active tasks at a time. Each receives its own budget. The total experiment can therefore consume up to three workload budgets, subject to account limits. The semaphore is a client scheduling limit, not a server-side aggregate budget.

Reuse the same --run-id only to retry the identical experiment. A new experiment needs a new ID. Changing payloads under old keys causes an idempotency conflict. Ctrl+C while waiting requests cancellation for each submitted workload with a known ID. A failed cancellation still requires nodus cancel WORKLOAD_ID.