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run Command

Execute simulation experiments with your agent.

Usage​

fluxloop run experiment [OPTIONS]

Options​

OptionDescriptionDefault
--iterationsNumber of runs per inputFrom config
--inputsInput file pathinputs/generated.yaml
--output-dirOutput directoryexperiments/
--nameExperiment nameAuto-generated

Examples​

Basic Experiment​

Run with default settings:

fluxloop run experiment

Custom Iterations​

Override iteration count:

fluxloop run experiment --iterations 20

Named Experiment​

Give your experiment a name:

fluxloop run experiment --name "baseline-test"

Custom Input File​

Use different input file:

fluxloop run experiment --inputs my-custom-inputs.yaml

How It Works​

1. Load Configuration​

Reads configs/simulation.yaml:

runner:
  target: "examples.my_agent:run"
  iterations: 10

output:
  directory: "experiments"
  format: jsonl

2. Load Inputs​

Loads generated inputs from inputs/generated.yaml:

generated_inputs:
  - input: "How do I start?"
    persona: novice_user
  - input: "What are advanced options?"
    persona: expert_user

3. Execute Agent​

For each input, runs your agent iterations times:

# Your agent (examples/my_agent.py)
import fluxloop

@fluxloop.agent()
def run(input_text: str) -> str:
    return process(input_text)

4. Collect Traces​

Captures:

  • Input/output pairs
  • Execution time
  • Observations
  • Errors (if any)

5. Save Results​

Outputs to experiments/experiment_YYYYMMDD_HHMMSS/:

experiments/my_agent_20241101_143022/
├── summary.json           # Aggregate stats
├── trace_summary.jsonl    # Per-trace summaries
├── traces.jsonl           # Detailed traces
├── observations.jsonl     # Observation stream
└── config.yaml            # Experiment config snapshot

Output Files​

summary.json​

Aggregate statistics:

{
  "total_traces": 100,
  "successful": 98,
  "failed": 2,
  "avg_duration_ms": 250.5,
  "started_at": "2024-11-01T14:30:22Z",
  "completed_at": "2024-11-01T14:35:10Z"
}

trace_summary.jsonl​

One line per trace:

{"trace_id": "trace_001", "input": "How do I start?", "output": "...", "duration_ms": 245}
{"trace_id": "trace_002", "input": "What are options?", "output": "...", "duration_ms": 267}

traces.jsonl​

Complete trace data with all observations.

Configuration​

Runner Target​

Point to your agent function:

runner:
  target: "examples.my_agent:run"  # module:function

Iterations​

Number of times to run each input:

runner:
  iterations: 10  # Run each input 10 times

Why multiple iterations?

  • Measure consistency
  • Account for LLM randomness
  • Statistical significance

Argument Replay (Advanced)​

Replay recorded arguments:

replay_args:
  enabled: true
  recording_file: "recordings/args.jsonl"
  override_param_path: "data.content"

See Recording Workflow for details.

Progress Tracking​

The command shows real-time progress:

[INFO] Starting experiment...
[INFO] Loaded 50 inputs
[INFO] Running 10 iterations per input (500 total runs)
[▓▓▓▓▓▓▓▓░░] 250/500 (50%) - ETA: 2m 15s

Error Handling​

Graceful Failures​

If an agent run fails:

  • Error is captured in trace
  • Experiment continues with next input
  • Summary shows failure count

Critical Failures​

If configuration is invalid:

  • Experiment stops immediately
  • Error message shows what to fix

Performance Tips​

Parallel Execution (Coming Soon)​

fluxloop run experiment --parallel 4  # Run 4 agents in parallel

Batch Processing​

For large input sets, split into batches:

# Generate in batches
fluxloop generate inputs --limit 100 --output inputs/batch1.yaml
fluxloop generate inputs --limit 100 --output inputs/batch2.yaml

# Run separately
fluxloop run experiment --inputs inputs/batch1.yaml --name batch1
fluxloop run experiment --inputs inputs/batch2.yaml --name batch2

Next Steps​