ruby_random_test.py revision 8931 
1# Copyright (c) 2006-2007 The Regents of The University of Michigan
2# Copyright (c) 2009 Advanced Micro Devices, Inc.
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28# Authors: Ron Dreslinski
29#          Brad Beckmann
30
31import m5
32from m5.objects import *
33from m5.defines import buildEnv
34from m5.util import addToPath
35import os, optparse, sys
36addToPath('../common')
37addToPath('../ruby')
38
39import Options
40import Ruby
41
42# Get paths we might need.  It's expected this file is in m5/configs/example.
43config_path = os.path.dirname(os.path.abspath(__file__))
44config_root = os.path.dirname(config_path)
45m5_root = os.path.dirname(config_root)
46
47parser = optparse.OptionParser()
48Options.addCommonOptions(parser)
49
50parser.add_option("-l", "--checks", metavar="N", default=100,
51                  help="Stop after N checks (loads)")
52parser.add_option("-f", "--wakeup_freq", metavar="N", default=10,
53                  help="Wakeup every N cycles")
54
55#
56# Add the ruby specific and protocol specific options
57#
58Ruby.define_options(parser)
59
60execfile(os.path.join(config_root, "common", "Options.py"))
61
62(options, args) = parser.parse_args()
63
64#
65# Set the default cache size and associativity to be very small to encourage
66# races between requests and writebacks.
67#
68options.l1d_size="256B"
69options.l1i_size="256B"
70options.l2_size="512B"
71options.l3_size="1kB"
72options.l1d_assoc=2
73options.l1i_assoc=2
74options.l2_assoc=2
75options.l3_assoc=2
76
77if args:
78     print "Error: script doesn't take any positional arguments"
79     sys.exit(1)
80
81#
82# Create the ruby random tester
83#
84
85# Check the protocol
86check_flush = False
87if buildEnv['PROTOCOL'] == 'MOESI_hammer':
88    check_flush = True
89
90tester = RubyTester(check_flush = check_flush,
91                    checks_to_complete = options.checks,
92                    wakeup_frequency = options.wakeup_freq)
93
94#
95# Create the M5 system.  Note that the Memory Object isn't
96# actually used by the rubytester, but is included to support the
97# M5 memory size == Ruby memory size checks
98#
99system = System(tester = tester, physmem = SimpleMemory())
100
101Ruby.create_system(options, system)
102
103assert(options.num_cpus == len(system.ruby._cpu_ruby_ports))
104
105#
106# The tester is most effective when randomization is turned on and
107# artifical delay is randomly inserted on messages
108#
109system.ruby.randomization = True
110
111for ruby_port in system.ruby._cpu_ruby_ports:
112    #
113    # Tie the ruby tester ports to the ruby cpu ports
114    #
115    tester.cpuPort = ruby_port.slave
116
117    #
118    # Tell each sequencer this is the ruby tester so that it
119    # copies the subblock back to the checker
120    #
121    ruby_port.using_ruby_tester = True
122
123    #
124    # Ruby doesn't need the backing image of memory when running with
125    # the tester.
126    #
127    ruby_port.access_phys_mem = False
128
129# -----------------------
130# run simulation
131# -----------------------
132
133root = Root( full_system = False, system = system )
134root.system.mem_mode = 'timing'
135
136# Not much point in this being higher than the L1 latency
137m5.ticks.setGlobalFrequency('1ns')
138
139# instantiate configuration
140m5.instantiate()
141
142# simulate until program terminates
143exit_event = m5.simulate(options.maxtick)
144
145print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
146