ruby_random_test.py revision 12564 
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
31from __future__ import print_function
32
33import m5
34from m5.objects import *
35from m5.defines import buildEnv
36from m5.util import addToPath
37import os, optparse, sys
38
39addToPath('../')
40
41from common import Options
42from ruby import Ruby
43
44# Get paths we might need.  It's expected this file is in m5/configs/example.
45config_path = os.path.dirname(os.path.abspath(__file__))
46config_root = os.path.dirname(config_path)
47m5_root = os.path.dirname(config_root)
48
49parser = optparse.OptionParser()
50Options.addNoISAOptions(parser)
51
52parser.add_option("--maxloads", metavar="N", default=100,
53                  help="Stop after N loads")
54parser.add_option("-f", "--wakeup_freq", metavar="N", default=10,
55                  help="Wakeup every N cycles")
56
57#
58# Add the ruby specific and protocol specific options
59#
60Ruby.define_options(parser)
61
62execfile(os.path.join(config_root, "common", "Options.py"))
63
64(options, args) = parser.parse_args()
65
66#
67# Set the default cache size and associativity to be very small to encourage
68# races between requests and writebacks.
69#
70options.l1d_size="256B"
71options.l1i_size="256B"
72options.l2_size="512B"
73options.l3_size="1kB"
74options.l1d_assoc=2
75options.l1i_assoc=2
76options.l2_assoc=2
77options.l3_assoc=2
78
79if args:
80     print("Error: script doesn't take any positional arguments")
81     sys.exit(1)
82
83#
84# Create the ruby random tester
85#
86
87# Check the protocol
88check_flush = False
89if buildEnv['PROTOCOL'] == 'MOESI_hammer':
90    check_flush = True
91
92tester = RubyTester(check_flush = check_flush,
93                    checks_to_complete = options.maxloads,
94                    wakeup_frequency = options.wakeup_freq)
95
96#
97# Create the M5 system.  Note that the Memory Object isn't
98# actually used by the rubytester, but is included to support the
99# M5 memory size == Ruby memory size checks
100#
101system = System(cpu = tester, mem_ranges = [AddrRange(options.mem_size)])
102
103# Create a top-level voltage domain and clock domain
104system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
105
106system.clk_domain = SrcClockDomain(clock = options.sys_clock,
107                                   voltage_domain = system.voltage_domain)
108
109Ruby.create_system(options, False, system)
110
111# Create a seperate clock domain for Ruby
112system.ruby.clk_domain = SrcClockDomain(clock = options.ruby_clock,
113                                        voltage_domain = system.voltage_domain)
114
115assert(options.num_cpus == len(system.ruby._cpu_ports))
116
117tester.num_cpus = len(system.ruby._cpu_ports)
118
119#
120# The tester is most effective when randomization is turned on and
121# artifical delay is randomly inserted on messages
122#
123system.ruby.randomization = True
124
125for ruby_port in system.ruby._cpu_ports:
126    #
127    # Tie the ruby tester ports to the ruby cpu read and write ports
128    #
129    if ruby_port.support_data_reqs and ruby_port.support_inst_reqs:
130        tester.cpuInstDataPort = ruby_port.slave
131    elif ruby_port.support_data_reqs:
132        tester.cpuDataPort = ruby_port.slave
133    elif ruby_port.support_inst_reqs:
134        tester.cpuInstPort = ruby_port.slave
135
136    # Do not automatically retry stalled Ruby requests
137    ruby_port.no_retry_on_stall = True
138
139    #
140    # Tell each sequencer this is the ruby tester so that it
141    # copies the subblock back to the checker
142    #
143    ruby_port.using_ruby_tester = True
144
145# -----------------------
146# run simulation
147# -----------------------
148
149root = Root( full_system = False, system = system )
150root.system.mem_mode = 'timing'
151
152# Not much point in this being higher than the L1 latency
153m5.ticks.setGlobalFrequency('1ns')
154
155# instantiate configuration
156m5.instantiate()
157
158# simulate until program terminates
159exit_event = m5.simulate(options.abs_max_tick)
160
161print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
162