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Optimization

Application-level fairness optimization

Folder / File Description
models/ Clone of the models repository.
runs/ Output folder of the solved scenarios.
samples/ Example input files for the optimization.
solving/ Gurobi solving code.
tools/ Helper scripts.
vis/ Scripts to generate result plots.
run_simple.py Solve simple scenarios with one bottleneck.
run.py Solve more complex scenarios with a network topology.
search.py Tries to find solutions for min and max number of applications.

QUICKSTART

Clone

Use the --recurse-submodules option to include also the utility models.

git clone --recurse-submodules [email protected]:DFG_SDN_APPAWARE/optimization.git

run_simple.py

Solves a simple scenario where there are only unidirectional flows and only one bottleneck link.

Determine the throughput allocation for a scenario with 12 web download clients:

python3 run_simple.py --scenario samples/simple/12webdl.json

The results are stored in runs/YYYYMMDD_XXXXXXX/.

To get detailed visual output of the optimization result, use the --plotting parameter:

python3 run_simple.py --scenario samples/simple/12webdl.json --plotting

The plots are put into the output folder of the run.

To use a constant delay function with 2ms delay for the links, you can use the 2ms.npy throughput -> delay function:

python3 run_simple.py --scenario samples/simple/12webdl.json --plotting --delay-approx=samples/simple/2ms.npy

Usage (run_simple.py)

usage: run_simple.py [-h] [-v] [--run-folders RUN_FOLDERS] [--summary SUMMARY]
                     [--model_dir MODEL_DIR] [--scenario SCENARIO]
                     [--delay-approx DELAY_APPROX] [--no-flow-types]
                     [--time-limit TIME_LIMIT] [--plotting]

Solve simple bottleneck scenarios.

optional arguments:
  -h, --help            show this help message and exit
  -v, --verbose         Enable debug log.
  --run-folders RUN_FOLDERS
                        Where to store the detailed run results. (default:
                        runs)
  --summary SUMMARY, -s SUMMARY
                        Filename where to store the summary. (default:
                        summary.json)
  --model_dir MODEL_DIR, -m MODEL_DIR
                        Where the application models are stored. (default:
                        models/postprocessing/models/)
  --scenario SCENARIO   Bottleneck scenario file. (default:
                        samples/simple/2ssh.json)
  --delay-approx DELAY_APPROX
                        Which delay approx. to use. (default:
                        samples/simple/max80perc.npy)
  --no-flow-types       Deactivate same MOS per application type.
  --time-limit TIME_LIMIT
                        Time limit for solving the scenario in seconds.
                        (default: 100)
  --plotting            Activate plotting of results. (default: False)