f9_latency.py

# Copyright 2021 Max Planck Institute for Software Systems, and
# National University of Singapore
#
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########################################################################
# This script is for reproducing [Figure 9] in the paper.
#
# In each simulation, two hosts are connected by a switch
# [HOST_0] - [NIC_0] ---- [SWITCH] ----  [NIC_1] - [HOST_1]
#  server                                           client
#
# The server host runs netperf server and client host runs TCP_RR and
# TCP_STREAM test
#
# The command to run all the experiments is:
# $: python3 run.py pyexps/ae/t1_combination.py --filter nf-* --verbose
########################################################################

from functools import partial

import simbricks.nodeconfig as node
import simbricks.simulators as sim
from simbricks.simulator_utils import create_basic_hosts

import simbricks.experiments as exp

pci_latency = [10, 50, 100, 500, 1000]
experiments = []

for pci_type in pci_latency:

    e = exp.Experiment('pci-gt-ib-sw-' + f'{pci_type}')

    net = sim.SwitchNet()
    net.sync_period = pci_type
    net.eth_latency = pci_type
    e.add_network(net)

    HostClass = sim.Gem5Host
    e.checkpoint = True

    # pylint: disable=redefined-outer-name
    def nic_pci(pci_type: int):
        n = sim.I40eNIC()
        n.sync_period = pci_type
        n.pci_latency = pci_type
        return n

    NicClass = partial(nic_pci, pci_type)
    NcClass = node.I40eLinuxNode

    # create servers and clients
    servers = create_basic_hosts(
        e, 1, 'server', net, NicClass, HostClass, NcClass, node.NetperfServer
    )

    clients = create_basic_hosts(
        e,
        1,
        'client',
        net,
        NicClass,
        HostClass,
        NcClass,
        node.NetperfClient,
        ip_start=2
    )

    for s in servers:
        s.pci_latency = pci_type
        s.sync_period = pci_type

    for c in clients:
        c.pci_latency = pci_type
        c.sync_period = pci_type
        c.wait = True
        c.node_config.app.server_ip = servers[0].node_config.ip

    # add to experiments
    experiments.append(e)