sysbench_memory.py

# Copyright 2021 Max Planck Institute for Software Systems, and
# National University of Singapore
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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"""
Runs sysbench memory benchmarks for different memory configurations.

Used to compare latency and throughput of disaggregated memory to local one.
"""

import simbricks.orchestration.experiment.experiment_environment as env
import simbricks.orchestration.experiments as exp
import simbricks.orchestration.nodeconfig as node
import simbricks.orchestration.simulators as sim

host_types = ['gem5', 'simics']
mem_types = ['local', 'basicmem']
experiments = []


class SysbenchMemoryBenchmark(node.AppConfig):

    def __init__(
        self,
        disagg_addr: int,
        disagg_size: int,
        disaggregated: bool,
        time_limit: int,
        num_threads=1
    ):
        self.disagg_addr = disagg_addr
        """Address of disaggregated memory start."""
        self.disagg_size = disagg_size
        """Size of disaggregated memory."""
        self.disaggregated = disaggregated
        """Whether to use disaggregated memory."""
        self.time_limit = time_limit
        """
        Time limit for sysbench benchmark in seconds.

        0 to disable limit.
        """
        self.num_threads = num_threads
        """Number of cores to run the benchmark on in parallel."""

    # pylint: disable=consider-using-with
    def config_files(self, environment: env.ExpEnv):
        m = {
            'farmem.ko':
                open(f'{environment.repodir}/images/farmem/farmem.ko', 'rb')
        }
        return {**m, **super().config_files(environment)}

    def run_cmds(self, _):
        cmds = [
            'mount -t proc proc /proc', 'mount -t sysfs sysfs /sys', 'free -m'
        ]
        if self.disaggregated:
            cmds.append(
                f'insmod /tmp/guest/farmem.ko '
                f'base_addr=0x{self.disagg_addr:x} '
                f'size=0x{self.disagg_size:x} nnid=1 drain_node=1'
            )
            cmds.append('free -m')
            cmds.append('numactl -H')

        sysbench_cmd = (
            'sysbench '
            f'--time={self.time_limit} '
            '--histogram=on '
            'memory '
            '--memory-oper=read '
            '--memory-block-size=16M '
            '--memory-access-mode=rnd '
            '--memory-total-size=0 run'
        )

        parallel_cmd = str()
        for i in range(self.num_threads):
            parallel_cmd += (
                f'numactl --membind={1 if self.disaggregated else 0} '
                f'--physcpubind={i} {sysbench_cmd} & '
            )
        parallel_cmd += 'wait'
        cmds.append(parallel_cmd)

        return cmds


# Create multiple experiments with different simulator permutations, which can
# be filtered later.
for host_type in host_types:
    for mem_type in mem_types:
        e = exp.Experiment(f'sysbench_memory-{host_type}-{mem_type}')

        if not mem_type in mem_types:
            raise NameError(mem_type)

        mem = sim.BasicMemDev()
        mem.name = 'mem0'
        mem.addr = 0x2000000000

        # node config
        node_config = node.NodeConfig()
        node_config.cores = 1
        node_config.threads = 1
        node_config.memory = 4096
        # TODO Simics offers no way to extend the kernel command line. Instead,
        # the base image has to be rebuilt to set the following option using
        # GRUB in `images/scripts/install-base.sh`.
        if host_type != 'simics':
            node_config.kcmd_append += 'numa=fake=2'

        # app config
        app = SysbenchMemoryBenchmark(
            mem.addr,
            mem.size,
            mem_type == 'basicmem',
            1,
            node_config.cores * node_config.threads
        )
        node_config.app = app

        # host
        if host_type == 'gem5':
            host = sim.Gem5Host(node_config)
            e.checkpoint = True
        elif host_type == 'simics':
            host = sim.SimicsHost(node_config)
            host.sync = True
            host.timing = True
            e.checkpoint = True
        else:
            raise NameError(host_type)

        host.name = 'host.0'
        e.add_host(host)
        host.wait = True
        host.mem_latency = host.sync_period = mem.mem_latency = \
            mem.sync_period = 500

        if mem_type == 'basicmem':
            host.add_memdev(mem)
            e.add_memdev(mem)

        # add to experiments
        experiments.append(e)