arm,config: Add dist-gem5 support to the big.LITTLE(tm) config
This patch extends the example big.LITTLE configuration to enable dist-gem5 simulations of big.LITTLE systems. Change-Id: I49c095ab3c737b6a082f7c6f15f514c269217756 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
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Gabor Dozsa
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configs/example/arm/dist_bigLITTLE.py
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configs/example/arm/dist_bigLITTLE.py
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# Copyright (c) 2016 ARM Limited
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# All rights reserved.
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#
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# The license below extends only to copyright in the software and shall
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# not be construed as granting a license to any other intellectual
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# property including but not limited to intellectual property relating
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# to a hardware implementation of the functionality of the software
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# licensed hereunder. You may use the software subject to the license
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# terms below provided that you ensure that this notice is replicated
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# unmodified and in its entirety in all distributions of the software,
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# modified or unmodified, in source code or in binary form.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Gabor Dozsa
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# This configuration file extends the example ARM big.LITTLE(tm)
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# configuration to enabe dist-gem5 siulations of big.LITTLE systems.
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import argparse
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import os
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import m5
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from m5.objects import *
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import fs_bigLITTLE as bL
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m5.util.addToPath("../../dist")
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import sw
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def addOptions(parser):
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# Options for distributed simulation (i.e. dist-gem5)
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parser.add_argument("--dist", action="store_true", help="Distributed gem5"\
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" simulation.")
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parser.add_argument("--is-switch", action="store_true",
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help="Select the network switch simulator process for"\
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" a distributed gem5 run.")
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parser.add_argument("--dist-rank", default=0, action="store", type=int,
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help="Rank of this system within the dist gem5 run.")
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parser.add_argument("--dist-size", default=0, action="store", type=int,
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help="Number of gem5 processes within the dist gem5"\
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" run.")
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parser.add_argument("--dist-server-name",
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default="127.0.0.1",
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action="store", type=str,
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help="Name of the message server host\nDEFAULT:"\
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" localhost")
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parser.add_argument("--dist-server-port",
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default=2200,
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action="store", type=int,
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help="Message server listen port\nDEFAULT: 2200")
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parser.add_argument("--dist-sync-repeat",
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default="0us",
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action="store", type=str,
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help="Repeat interval for synchronisation barriers"\
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" among dist-gem5 processes\nDEFAULT:"\
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" --ethernet-linkdelay")
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parser.add_argument("--dist-sync-start",
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default="1000000000000t",
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action="store", type=str,
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help="Time to schedule the first dist synchronisation"\
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" barrier\nDEFAULT:1000000000000t")
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parser.add_argument("--ethernet-linkspeed", default="10Gbps",
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action="store", type=str,
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help="Link speed in bps\nDEFAULT: 10Gbps")
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parser.add_argument("--ethernet-linkdelay", default="10us",
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action="store", type=str,
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help="Link delay in seconds\nDEFAULT: 10us")
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parser.add_argument("--etherdump", action="store", type=str, default="",
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help="Specify the filename to dump a pcap capture of"\
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" the ethernet traffic")
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# Used by util/dist/gem5-dist.sh
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parser.add_argument("--checkpoint-dir", type=str,
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default=m5.options.outdir,
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help="Directory to save/read checkpoints")
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def addEthernet(system, options):
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# create NIC
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dev = IGbE_e1000()
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system.attach_pci(dev)
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system.ethernet = dev
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# create distributed ethernet link
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system.etherlink = DistEtherLink(speed = options.ethernet_linkspeed,
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delay = options.ethernet_linkdelay,
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dist_rank = options.dist_rank,
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dist_size = options.dist_size,
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server_name = options.dist_server_name,
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server_port = options.dist_server_port,
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sync_start = options.dist_sync_start,
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sync_repeat = options.dist_sync_repeat)
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system.etherlink.int0 = Parent.system.ethernet.interface
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if options.etherdump:
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system.etherdump = EtherDump(file=options.etherdump)
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system.etherlink.dump = system.etherdump
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def main():
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parser = argparse.ArgumentParser(
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description="Generic ARM big.LITTLE configuration with "\
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"dist-gem5 support")
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bL.addOptions(parser)
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addOptions(parser)
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options = parser.parse_args()
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if options.is_switch:
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root = Root(full_system = True,
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system = sw.build_switch(options))
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else:
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root = bL.build(options)
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addEthernet(root.system, options)
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if options.restore_from:
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checkpoint_path = os.path.join(options.checkpoint_dir,
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options.restore_from)
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else:
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checkpoint_path = None
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bL.instantiate(checkpoint_path)
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bL.run(options.checkpoint_dir)
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if __name__ == "__m5_main__":
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main()
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