derek/gem5
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

learning_gem5: Ruby random tester files for MSI

Browse Source 
Adds a pair of scripts to run the Ruby random tester with the MSI protocol.

This code follows Learning gem5 Part 3.
http://learning.gem5.org/book/part3/index.html

Change-Id: I15550a36618546f0354163b0216cf771f434ed84
Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-on: https://gem5-review.googlesource.com/8944
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
This commit is contained in:
Jason Lowe-Power
2018-03-09 12:08:49 -08:00
parent adbfde6dff
commit d9f9b80dc9
2 changed files with 195 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
configs/learning_gem5/part3/ruby_test.py Normal file
View File

@@ -0,0 +1,84 @@
# -*- coding: utf-8 -*-
# Copyright (c) 2015 Jason Power
# All rights reserved.
#
# 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: Jason Lowe-Power
""" This file creates a system with Ruby caches and runs the ruby random tester
See Part 3 in the Learning gem5 book: learning.gem5.org/book/part3
IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
also needs to be updated. For now, email Jason <jason@lowepower.com>
"""
from __future__ import print_function
# import the m5 (gem5) library created when gem5 is built
import m5
# import all of the SimObjects
from m5.objects import *
from test_caches import TestCacheSystem
# create the system we are going to simulate
system = System()
# Set the clock fequency of the system (and all of its children)
system.clk_domain = SrcClockDomain()
system.clk_domain.clock = '1GHz'
system.clk_domain.voltage_domain = VoltageDomain()
# Set up the system
system.mem_mode = 'timing' # Use timing accesses
system.mem_ranges = [AddrRange('512MB')] # Create an address range
# Create the tester
system.tester = RubyTester(checks_to_complete = 100,
wakeup_frequency = 10,
num_cpus = 2)
# Create a DDR3 memory controller and connect it to the membus
system.mem_ctrl = DDR3_1600_8x8()
system.mem_ctrl.range = system.mem_ranges[0]
# Create the Ruby System
system.caches = TestCacheSystem()
system.caches.setup(system, system.tester, [system.mem_ctrl])
# set up the root SimObject and start the simulation
root = Root(full_system = False, system = system)
# Not much point in this being higher than the L1 latency
m5.ticks.setGlobalFrequency('1ns')
# instantiate all of the objects we've created above
m5.instantiate()
print("Beginning simulation!")
exit_event = m5.simulate()
print('Exiting @ tick {} because {}'.format(
m5.curTick(), exit_event.getCause())
)

111
configs/learning_gem5/part3/test_caches.py Normal file
View File

@@ -0,0 +1,111 @@
# -*- coding: utf-8 -*-
# Copyright (c) 2017 Jason Power
# All rights reserved.
#
# 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: Jason Power
""" This file creates a set of Ruby caches, the Ruby network, and a simple
point-to-point topology for the RubyRandomTester to use.
See Part 3 in the Learning gem5 book: learning.gem5.org/book/part3
IMPORTANT: If you modify this file, it's likely that the Learning gem5 book
also needs to be updated. For now, email Jason <jason@lowepower.com>
"""
from m5.defines import buildEnv
from m5.util import fatal
from m5.objects import *
from msi_caches import L1Cache, DirController, MyNetwork
class TestCacheSystem(RubySystem):
def __init__(self):
if buildEnv['PROTOCOL'] != 'MSI':
fatal("This system assumes MSI from learning gem5!")
super(TestCacheSystem, self).__init__()
def setup(self, system, tester, mem_ctrls):
"""Set up the Ruby cache subsystem. Note: This can't be done in the
constructor because many of these items require a pointer to the
ruby system (self). This causes infinite recursion in initialize()
if we do this in the __init__.
Setting up for running the RubyRandomTester is a little different
than when we're using CPUs.
"""
num_testers = tester.num_cpus
# Ruby's global network.
self.network = MyNetwork(self)
# MSI uses 3 virtual networks
self.number_of_virtual_networks = 3
self.network.number_of_virtual_networks = 3
self.controllers = \
[L1Cache(system, self, self) for i in range(num_testers)] + \
[DirController(self, system.mem_ranges, mem_ctrls)]
self.sequencers = [RubySequencer(version = i,
# I/D cache is combined and grab from ctrl
icache = self.controllers[i].cacheMemory,
dcache = self.controllers[i].cacheMemory,
clk_domain = self.clk_domain,
) for i in range(num_testers)]
for i,c in enumerate(self.controllers[0:len(self.sequencers)]):
c.sequencer = self.sequencers[i]
self.num_of_sequencers = len(self.sequencers)
# Create the network and connect the controllers.
# NOTE: This is quite different if using Garnet!
self.network.connectControllers(self.controllers)
self.network.setup_buffers()
# Set up a proxy port for the system_port. Used for load binaries and
# other functional-only things.
self.sys_port_proxy = RubyPortProxy()
system.system_port = self.sys_port_proxy.slave
# Connect up the sequencers to the random tester
for seq in self.sequencers:
if seq.support_data_reqs and seq.support_inst_reqs:
tester.cpuInstDataPort = seq.slave
elif seq.support_data_reqs:
tester.cpuDataPort = seq.slave
elif seq.support_inst_reqs:
tester.cpuInstDataPort = seq.slave
# Do not automatically retry stalled Ruby requests
seq.no_retry_on_stall = True
# Tell each sequencer this is the ruby tester so that it
# copies the subblock back to the checker
seq.using_ruby_tester = True