tests/gem5/memory/memtest-run.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 *
m5.util.addToPath('../../../configs/')
from common.Caches import *

#MAX CORES IS 8 with the fals sharing method
nb_cores = 8
cpus = [MemTest(max_loads = 1e5, progress_interval = 1e4)
        for i in xrange(nb_cores) ]

# system simulated
system = System(cpu = cpus,
                physmem = SimpleMemory(),
                membus = SystemXBar())
# Dummy voltage domain for all our clock domains
system.voltage_domain = VoltageDomain()
system.clk_domain = SrcClockDomain(clock = '1GHz',
                                   voltage_domain = system.voltage_domain)

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

system.toL2Bus = L2XBar(clk_domain = system.cpu_clk_domain)
system.l2c = L2Cache(clk_domain = system.cpu_clk_domain, size='64kB', assoc=8)
system.l2c.cpu_side = system.toL2Bus.master

# connect l2c to membus
system.l2c.mem_side = system.membus.slave

# add L1 caches
for cpu in cpus:
    # All cpus are associated with cpu_clk_domain
    cpu.clk_domain = system.cpu_clk_domain
    cpu.l1c = L1Cache(size = '32kB', assoc = 4)
    cpu.l1c.cpu_side = cpu.port
    cpu.l1c.mem_side = system.toL2Bus.slave

system.system_port = system.membus.slave

# connect memory to membus
system.physmem.port = system.membus.master


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

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

m5.instantiate()
exit_event = m5.simulate()
if exit_event.getCause() != "maximum number of loads reached":
    exit(1)