From: Gabor Dozsa Date: Tue, 14 Feb 2017 21:36:15 +0000 (-0600) Subject: arm,config: Add dist-gem5 support to the big.LITTLE(tm) config X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4b8b9c0585205f82cc8bba268dc54cd2e2af8f75;p=gem5.git 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 --- diff --git a/configs/example/arm/dist_bigLITTLE.py b/configs/example/arm/dist_bigLITTLE.py new file mode 100644 index 000000000..13b8abf5f --- /dev/null +++ b/configs/example/arm/dist_bigLITTLE.py @@ -0,0 +1,145 @@ +# Copyright (c) 2016 ARM Limited +# All rights reserved. +# +# The license below extends only to copyright in the software and shall +# not be construed as granting a license to any other intellectual +# property including but not limited to intellectual property relating +# to a hardware implementation of the functionality of the software +# licensed hereunder. You may use the software subject to the license +# terms below provided that you ensure that this notice is replicated +# unmodified and in its entirety in all distributions of the software, +# modified or unmodified, in source code or in binary form. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer; +# redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution; +# neither the name of the copyright holders nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# Authors: Gabor Dozsa + +# This configuration file extends the example ARM big.LITTLE(tm) +# configuration to enabe dist-gem5 siulations of big.LITTLE systems. + +import argparse +import os + +import m5 +from m5.objects import * + +import fs_bigLITTLE as bL +m5.util.addToPath("../../dist") +import sw + + +def addOptions(parser): + # Options for distributed simulation (i.e. dist-gem5) + parser.add_argument("--dist", action="store_true", help="Distributed gem5"\ + " simulation.") + parser.add_argument("--is-switch", action="store_true", + help="Select the network switch simulator process for"\ + " a distributed gem5 run.") + parser.add_argument("--dist-rank", default=0, action="store", type=int, + help="Rank of this system within the dist gem5 run.") + parser.add_argument("--dist-size", default=0, action="store", type=int, + help="Number of gem5 processes within the dist gem5"\ + " run.") + parser.add_argument("--dist-server-name", + default="127.0.0.1", + action="store", type=str, + help="Name of the message server host\nDEFAULT:"\ + " localhost") + parser.add_argument("--dist-server-port", + default=2200, + action="store", type=int, + help="Message server listen port\nDEFAULT: 2200") + parser.add_argument("--dist-sync-repeat", + default="0us", + action="store", type=str, + help="Repeat interval for synchronisation barriers"\ + " among dist-gem5 processes\nDEFAULT:"\ + " --ethernet-linkdelay") + parser.add_argument("--dist-sync-start", + default="1000000000000t", + action="store", type=str, + help="Time to schedule the first dist synchronisation"\ + " barrier\nDEFAULT:1000000000000t") + parser.add_argument("--ethernet-linkspeed", default="10Gbps", + action="store", type=str, + help="Link speed in bps\nDEFAULT: 10Gbps") + parser.add_argument("--ethernet-linkdelay", default="10us", + action="store", type=str, + help="Link delay in seconds\nDEFAULT: 10us") + parser.add_argument("--etherdump", action="store", type=str, default="", + help="Specify the filename to dump a pcap capture of"\ + " the ethernet traffic") + # Used by util/dist/gem5-dist.sh + parser.add_argument("--checkpoint-dir", type=str, + default=m5.options.outdir, + help="Directory to save/read checkpoints") + + +def addEthernet(system, options): + # create NIC + dev = IGbE_e1000() + system.attach_pci(dev) + system.ethernet = dev + + # create distributed ethernet link + system.etherlink = DistEtherLink(speed = options.ethernet_linkspeed, + delay = options.ethernet_linkdelay, + dist_rank = options.dist_rank, + dist_size = options.dist_size, + server_name = options.dist_server_name, + server_port = options.dist_server_port, + sync_start = options.dist_sync_start, + sync_repeat = options.dist_sync_repeat) + system.etherlink.int0 = Parent.system.ethernet.interface + if options.etherdump: + system.etherdump = EtherDump(file=options.etherdump) + system.etherlink.dump = system.etherdump + + +def main(): + parser = argparse.ArgumentParser( + description="Generic ARM big.LITTLE configuration with "\ + "dist-gem5 support") + bL.addOptions(parser) + addOptions(parser) + options = parser.parse_args() + + if options.is_switch: + root = Root(full_system = True, + system = sw.build_switch(options)) + else: + root = bL.build(options) + addEthernet(root.system, options) + + if options.restore_from: + checkpoint_path = os.path.join(options.checkpoint_dir, + options.restore_from) + else: + checkpoint_path = None + bL.instantiate(checkpoint_path) + bL.run(options.checkpoint_dir) + + +if __name__ == "__m5_main__": + main()