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#!/bin/bash
#
# Copyright (c) 2015 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 is an example boot script to use for dist-gem5 runs. The important
# task here is to extract the rank and size information through the m5
# initparam utility and use those to configure MAC/IP addresses and hostname.
#
# You are expected to customize this scipt for your needs (e.g. change
# the command at the end of the scipt to run your tests/workloads.
source /root/.bashrc
echo "bootscript.rcS is running"
# Retrieve dist-gem5 rank and size parameters using the 'm5' utility
MY_RANK=$(/sbin/m5 initparam dist-rank)
[ $? = 0 ] || { echo "m5 initparam failed"; exit -1; }
MY_SIZE=$(/sbin/m5 initparam dist-size)
[ $? = 0 ] || { echo "m5 initparam failed"; exit -1; }
/bin/hostname node${MY_RANK}
# Keep MAC address assignment simple for now ...
(($MY_RANK > 97)) && { echo "(E) Rank must be less than 98"; /sbin/m5 abort; }
((MY_ADDR = MY_RANK + 2))
if (($MY_ADDR < 10))
then
MY_ADDR_PADDED=0${MY_ADDR}
else
MY_ADDR_PADDED=${MY_ADDR}
fi
/sbin/ifconfig eth0 hw ether 00:90:00:00:00:${MY_ADDR_PADDED}
/sbin/ifconfig eth0 192.168.0.${MY_ADDR} netmask 255.255.255.0 up
/sbin/ifconfig -a
echo "Hello from $MY_RANK of $MY_SIZE"
# Now that our network interface is configured we can use the usual commands to
# contact the other systems, e.g. let's try to ping a "neighbour" system
if ((MY_RANK < MY_SIZE - 1))
then
ping -c 1 192.168.0.$((MY_ADDR + 1))
else
ping -c 1 192.168.0.2
fi
if [ "$MY_RANK" == "0" ]
then
# Trigger an immediate checkpoint at the next sync (by passing a non-zero
# delay param to m5 ckpt)
/sbin/m5 checkpoint 1
echo "A real multi node workload might start here ..."
# Trigger an immediate exit at the next sync (by passing a non-zero delay
# param to m5 exit)
/sbin/m5 exit 1
else
# This is to avoid other (rank!=0) gem5 processes exiting
# before the test (started by rank 0) completes. When rank 0 completes the
# test it will exit and that will trigger a notification to all the peer
# gem5 processes to stop the simulation.
echo "sleep forever..."
while /bin/true
do
sleep 5
done
fi
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