ruby_random_test.py revision 8845:a230379caf65 
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 Ruby
40
41# Get paths we might need.  It's expected this file is in m5/configs/example.
42config_path = os.path.dirname(os.path.abspath(__file__))
43config_root = os.path.dirname(config_path)
44m5_root = os.path.dirname(config_root)
45
46parser = optparse.OptionParser()
47
48parser.add_option("-l", "--checks", metavar="N", default=100,
49                  help="Stop after N checks (loads)")
50parser.add_option("-f", "--wakeup_freq", metavar="N", default=10,
51                  help="Wakeup every N cycles")
52
53#
54# Add the ruby specific and protocol specific options
55#
56Ruby.define_options(parser)
57
58execfile(os.path.join(config_root, "common", "Options.py"))
59
60(options, args) = parser.parse_args()
61
62#
63# Set the default cache size and associativity to be very small to encourage
64# races between requests and writebacks.
65#
66options.l1d_size="256B"
67options.l1i_size="256B"
68options.l2_size="512B"
69options.l3_size="1kB"
70options.l1d_assoc=2
71options.l1i_assoc=2
72options.l2_assoc=2
73options.l3_assoc=2
74
75if args:
76     print "Error: script doesn't take any positional arguments"
77     sys.exit(1)
78
79#
80# Create the ruby random tester
81#
82
83# Check the protocol
84check_flush = False
85if buildEnv['PROTOCOL'] == 'MOESI_hammer':
86    check_flush = True
87
88tester = RubyTester(check_flush = check_flush,
89                    checks_to_complete = options.checks,
90                    wakeup_frequency = options.wakeup_freq)
91
92#
93# Create the M5 system.  Note that the PhysicalMemory Object isn't
94# actually used by the rubytester, but is included to support the
95# M5 memory size == Ruby memory size checks
96#
97system = System(tester = tester, physmem = PhysicalMemory())
98
99Ruby.create_system(options, system)
100
101assert(options.num_cpus == len(system.ruby._cpu_ruby_ports))
102
103#
104# The tester is most effective when randomization is turned on and
105# artifical delay is randomly inserted on messages
106#
107system.ruby.randomization = True
108
109for ruby_port in system.ruby._cpu_ruby_ports:
110    #
111    # Tie the ruby tester ports to the ruby cpu ports
112    #
113    tester.cpuPort = ruby_port.slave
114
115    #
116    # Tell each sequencer this is the ruby tester so that it
117    # copies the subblock back to the checker
118    #
119    ruby_port.using_ruby_tester = True
120
121    #
122    # Ruby doesn't need the backing image of memory when running with
123    # the tester.
124    #
125    ruby_port.access_phys_mem = False
126
127# -----------------------
128# run simulation
129# -----------------------
130
131root = Root( full_system = False, system = system )
132root.system.mem_mode = 'timing'
133
134# Not much point in this being higher than the L1 latency
135m5.ticks.setGlobalFrequency('1ns')
136
137# instantiate configuration
138m5.instantiate()
139
140# simulate until program terminates
141exit_event = m5.simulate(options.maxtick)
142
143print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
144