gem5/tests/configs/simple-timing-mp-ruby.py

# Copyright (c) 2006-2007 The Regents of The University of Michigan
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# Authors: Ron Dreslinski

import m5
from m5.objects import *
from m5.defines import buildEnv
from m5.util import addToPath
import os, optparse, sys

# Get paths we might need
config_path = os.path.dirname(os.path.abspath(__file__))
config_root = os.path.dirname(config_path)
m5_root = os.path.dirname(config_root)
addToPath(config_root+'/configs/common')
addToPath(config_root+'/configs/ruby')
addToPath(config_root+'/configs/topologies')

import Options
import Ruby

parser = optparse.OptionParser()
Options.addCommonOptions(parser)

# Add the ruby specific and protocol specific options
Ruby.define_options(parser)

(options, args) = parser.parse_args()

#
# Set the default cache size and associativity to be very small to encourage
# races between requests and writebacks.
#
options.l1d_size="256B"
options.l1i_size="256B"
options.l2_size="512B"
options.l3_size="1kB"
options.l1d_assoc=2
options.l1i_assoc=2
options.l2_assoc=2
options.l3_assoc=2

nb_cores = 4
cpus = [ TimingSimpleCPU(cpu_id=i) for i in xrange(nb_cores) ]

# overwrite the num_cpus to equal nb_cores
options.num_cpus = nb_cores

# system simulated
system = System(cpu = cpus, clk_domain = SrcClockDomain(clock = '1GHz'))

# Create a seperate clock domain for components that should run at
# CPUs frequency
system.cpu.clk_domain = SrcClockDomain(clock = '2GHz')

Ruby.create_system(options, False, system)

# Create a separate clock domain for Ruby
system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock)

assert(options.num_cpus == len(system.ruby._cpu_ports))

for (i, cpu) in enumerate(system.cpu):
    # create the interrupt controller
    cpu.createInterruptController()

    #
    # Tie the cpu ports to the ruby cpu ports
    #
    cpu.connectAllPorts(system.ruby._cpu_ports[i])

# -----------------------
# run simulation
# -----------------------

root = Root( full_system=False, system = system )
root.system.mem_mode = 'timing'

# Not much point in this being higher than the L1 latency
m5.ticks.setGlobalFrequency('1ns')