e2e_bgsplit.py

# Copyright 2024 Max Planck Institute for Software Systems, and
# National University of Singapore
#
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import random
import simbricks.orchestration.experiments as exp
import simbricks.orchestration.nodeconfig as node
import simbricks.orchestration.simulators as sim
import simbricks.orchestration.e2e_components as e2e
import simbricks.orchestration.e2e_partition as e2e_part
from simbricks.orchestration.simulator_utils import create_tcp_cong_hosts
from simbricks.orchestration.e2e_topologies import (
    DCFatTree, add_contig_bg
)



splits = [1,2,4]

options = {
    'ns3::TcpSocket::SegmentSize': '1448',
    'ns3::TcpSocket::SndBufSize': '524288',
    'ns3::TcpSocket::RcvBufSize': '524288',
}

experiments = []
for N in splits:
  e = exp.Experiment(f'e2e_bgsplit-{N}')
  # Make sure background hosts are placed the same way
  random.seed(42)

  # Create empty topology first
  topology = DCFatTree(
              n_spine_sw=1,
              n_agg_bl=2,
              n_agg_sw=1,
              n_agg_racks=2,
              h_per_rack=10,
          )
  # fill up with background traffic hosts
  add_contig_bg(topology)

  # Partition into N ns-3 processes
  nets = e2e_part.partition(topology, N)
  for net in nets:
    net.e2e_global.stop_time = '1s'
    net.opt = ' '.join([f'--{o[0]}={o[1]}' for o in options.items()])
    net.wait = True
    e.add_network(net)
    net.init_network()

  experiments.append(e)