gpu-randomtest-ruby.py revision 11670 
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
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9#
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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.
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21#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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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
42m5.util.addToPath('../configs/common')
43m5.util.addToPath('../configs/')
44
45from ruby import Ruby
46import Options
47
48parser = optparse.OptionParser()
49Options.addCommonOptions(parser)
50
51# add the gpu specific options expected by the the gpu and gpu_RfO
52parser.add_option("-u", "--num-compute-units", type="int", default=8,
53                  help="number of compute units in the GPU")
54parser.add_option("--num-cp", type="int", default=0,
55                  help="Number of GPU Command Processors (CP)")
56parser.add_option("--simds-per-cu", type="int", default=4, help="SIMD units" \
57                  "per CU")
58parser.add_option("--wf-size", type="int", default=64,
59                  help="Wavefront size(in workitems)")
60parser.add_option("--wfs-per-simd", type="int", default=10, help="Number of " \
61                  "WF slots per SIMD")
62
63# Add the ruby specific and protocol specific options
64Ruby.define_options(parser)
65
66(options, args) = parser.parse_args()
67
68#
69# Set the default cache size and associativity to be very small to encourage
70# races between requests and writebacks.
71#
72options.l1d_size="256B"
73options.l1i_size="256B"
74options.l2_size="512B"
75options.l3_size="1kB"
76options.l1d_assoc=2
77options.l1i_assoc=2
78options.l2_assoc=2
79options.l3_assoc=2
80options.num_compute_units=8
81options.num_sqc=2
82
83# Check to for the GPU_RfO protocol.  Other GPU protocols are non-SC and will
84# not work with the Ruby random tester.
85assert(buildEnv['PROTOCOL'] == 'GPU_RfO')
86
87#
88# create the tester and system, including ruby
89#
90tester = RubyTester(check_flush = False, checks_to_complete = 100,
91                    wakeup_frequency = 10, num_cpus = options.num_cpus)
92
93# We set the testers as cpu for ruby to find the correct clock domains
94# for the L1 Objects.
95system = System(cpu = tester)
96
97# Dummy voltage domain for all our clock domains
98system.voltage_domain = VoltageDomain(voltage = options.sys_voltage)
99system.clk_domain = SrcClockDomain(clock = '1GHz',
100                                   voltage_domain = system.voltage_domain)
101
102system.mem_ranges = AddrRange('256MB')
103
104Ruby.create_system(options, False, system)
105
106# Create a separate clock domain for Ruby
107system.ruby.clk_domain = SrcClockDomain(clock = '1GHz',
108                                        voltage_domain = system.voltage_domain)
109
110tester.num_cpus = len(system.ruby._cpu_ports)
111
112#
113# The tester is most effective when randomization is turned on and
114# artifical delay is randomly inserted on messages
115#
116system.ruby.randomization = True
117
118for ruby_port in system.ruby._cpu_ports:
119    #
120    # Tie the ruby tester ports to the ruby cpu read and write ports
121    #
122    if ruby_port.support_data_reqs and ruby_port.support_inst_reqs:
123        tester.cpuInstDataPort = ruby_port.slave
124    elif ruby_port.support_data_reqs:
125        tester.cpuDataPort = ruby_port.slave
126    elif ruby_port.support_inst_reqs:
127        tester.cpuInstPort = ruby_port.slave
128
129    # Do not automatically retry stalled Ruby requests
130    ruby_port.no_retry_on_stall = True
131
132    #
133    # Tell the sequencer this is the ruby tester so that it
134    # copies the subblock back to the checker
135    #
136    ruby_port.using_ruby_tester = True
137
138# -----------------------
139# run simulation
140# -----------------------
141
142root = Root(full_system = False, system = system )
143root.system.mem_mode = 'timing'
144
145# Not much point in this being higher than the L1 latency
146m5.ticks.setGlobalFrequency('1ns')
147