# Copyright 2023 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
from simbricks.orchestration.simulator_utils import create_tcp_cong_hosts
from simbricks.orchestration.e2e_topologies import (
    DCFatTree, add_homa_bg
)

random.seed(42)

e = exp.Experiment('e2e_bg_homa')

options = {
    'ns3::TcpSocket::SegmentSize': '1448',
    'ns3::TcpSocket::SndBufSize': '524288',
    'ns3::TcpSocket::RcvBufSize': '524288',
    'ns3::Ipv4GlobalRouting::RandomEcmpRouting': '1',
}

topology = DCFatTree(
            n_spine_sw=1,
            n_agg_bl=1,
            n_agg_sw=1,
            n_agg_racks=2,
            h_per_rack=1,
        )
add_homa_bg(topology, app_proto='ns3::HomaSocketFactory')

net = sim.NS3E2ENet()
net.opt = ' '.join([f'--{o[0]}={o[1]}' for o in options.items()])
net.e2e_global.stop_time = "20s"
net.add_component(topology)
net.wait = True
e.add_network(net)
net.init_network()

experiments = [e]
