gpu-randomtest-ruby.py revision 11310 
1#
2#  Copyright (c) 2010-2015 Advanced Micro Devices, Inc.
3#  All rights reserved.
4#
5#  For use for simulation and test purposes only
6#
7#  Redistribution and use in source and binary forms, with or without
8#  modification, are permitted provided that the following conditions are met:
9#
10#  1. Redistributions of source code must retain the above copyright notice,
11#  this list of conditions and the following disclaimer.
12#
13#  2. Redistributions in binary form must reproduce the above copyright notice,
14#  this list of conditions and the following disclaimer in the documentation
15#  and/or other materials provided with the distribution.
16#
17#  3. Neither the name of the copyright holder nor the names of its contributors
18#  may be used to endorse or promote products derived from this software
19#  without specific prior written permission.
20#
21#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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32#
33#  Author: Brad Beckmann
34#
35
36import m5
37from m5.objects import *
38from m5.defines import buildEnv
39from m5.util import addToPath
40import os, optparse, sys
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)
46addToPath(config_root+'/configs/common')
47addToPath(config_root+'/configs/ruby')
48addToPath(config_root+'/configs/topologies')
49
50import Ruby
51import Options
52
53parser = optparse.OptionParser()
54Options.addCommonOptions(parser)
55
56# add the gpu specific options expected by the the gpu and gpu_RfO
57parser.add_option("-u", "--num-compute-units", type="int", default=8,
58                  help="number of compute units in the GPU")
59parser.add_option("--num-cp", type="int", default=0,
60                  help="Number of GPU Command Processors (CP)")
61parser.add_option("--simds-per-cu", type="int", default=4, help="SIMD units" \
62                  "per CU")
63parser.add_option("--wf-size", type="int", default=64,
64                  help="Wavefront size(in workitems)")
65parser.add_option("--wfs-per-simd", type="int", default=10, help="Number of " \
66                  "WF slots per SIMD")
67
68# Add the ruby specific and protocol specific options
69Ruby.define_options(parser)
70
71(options, args) = parser.parse_args()
72
73#
74# Set the default cache size and associativity to be very small to encourage
75# races between requests and writebacks.
76#
77options.l1d_size="256B"
78options.l1i_size="256B"
79options.l2_size="512B"
80options.l3_size="1kB"
81options.l1d_assoc=2
82options.l1i_assoc=2
83options.l2_assoc=2
84options.l3_assoc=2
85options.num_compute_units=8
86options.num_sqc=2
87
88# Check to for the GPU_RfO protocol.  Other GPU protocols are non-SC and will
89# not work with the Ruby random tester.
90assert(buildEnv['PROTOCOL'] == 'GPU_RfO')
91
92#
93# create the tester and system, including ruby
94#
95tester = RubyTester(check_flush = False, checks_to_complete = 100,
96                    wakeup_frequency = 10, num_cpus = options.num_cpus)
97
98# We set the testers as cpu for ruby to find the correct clock domains
99# for the L1 Objects.
100system = System(cpu = tester)
101
102# Dummy voltage domain for all our clock domains
103system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
104system.clk_domain = SrcClockDomain(clock = '1GHz',
105                                   voltage_domain = system.voltage_domain)
106
107system.mem_ranges = AddrRange('256MB')
108
109Ruby.create_system(options, False, system)
110
111# Create a separate clock domain for Ruby
112system.ruby.clk_domain = SrcClockDomain(clock = '1GHz',
113                                        voltage_domain = system.voltage_domain)
114
115tester.num_cpus = len(system.ruby._cpu_ports)
116
117#
118# The tester is most effective when randomization is turned on and
119# artifical delay is randomly inserted on messages
120#
121system.ruby.randomization = True
122
123for ruby_port in system.ruby._cpu_ports:
124    #
125    # Tie the ruby tester ports to the ruby cpu read and write ports
126    #
127    if ruby_port.support_data_reqs and ruby_port.support_inst_reqs:
128        tester.cpuInstDataPort = ruby_port.slave
129    elif ruby_port.support_data_reqs:
130        tester.cpuDataPort = ruby_port.slave
131    elif ruby_port.support_inst_reqs:
132        tester.cpuInstPort = ruby_port.slave
133
134    # Do not automatically retry stalled Ruby requests
135    ruby_port.no_retry_on_stall = True
136
137    #
138    # Tell the sequencer this is the ruby tester so that it
139    # copies the subblock back to the checker
140    #
141    ruby_port.using_ruby_tester = True
142
143# -----------------------
144# run simulation
145# -----------------------
146
147root = Root(full_system = False, system = system )
148root.system.mem_mode = 'timing'
149
150# Not much point in this being higher than the L1 latency
151m5.ticks.setGlobalFrequency('1ns')
152