ruby_gpu_random_test.py revision 13731:67cd980cb20f 
1# Copyright (c) 2010-2015 Advanced Micro Devices, Inc.
2# All rights reserved.
3#
4# For use for simulation and test purposes only
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions are met:
8#
9# 1. Redistributions of source code must retain the above copyright notice,
10# this list of conditions and the following disclaimer.
11#
12# 2. Redistributions in binary form must reproduce the above copyright notice,
13# this list of conditions and the following disclaimer in the documentation
14# and/or other materials provided with the distribution.
15#
16# 3. Neither the name of the copyright holder nor the names of its
17# contributors may be used to endorse or promote products derived from this
18# software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
24# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30# POSSIBILITY OF SUCH DAMAGE.
31#
32# Authors: Brad Beckmann
33
34from __future__ import print_function
35
36import m5
37from m5.objects import *
38from m5.defines import buildEnv
39from m5.util import addToPath
40import os, optparse, sys
41
42addToPath('../')
43
44from common import Options
45from ruby import Ruby
46
47# Get paths we might need.
48config_path = os.path.dirname(os.path.abspath(__file__))
49config_root = os.path.dirname(config_path)
50m5_root = os.path.dirname(config_root)
51
52parser = optparse.OptionParser()
53Options.addNoISAOptions(parser)
54
55parser.add_option("--maxloads", metavar="N", default=100,
56                  help="Stop after N loads")
57parser.add_option("-f", "--wakeup_freq", metavar="N", default=10,
58                  help="Wakeup every N cycles")
59parser.add_option("-u", "--num-compute-units", type="int", default=1,
60                  help="number of compute units in the GPU")
61parser.add_option("--num-cp", type="int", default=0,
62                  help="Number of GPU Command Processors (CP)")
63# not super important now, but to avoid putting the number 4 everywhere, make
64# it an option/knob
65parser.add_option("--cu-per-sqc", type="int", default=4, help="number of CUs \
66                  sharing an SQC (icache, and thus icache TLB)")
67parser.add_option("--simds-per-cu", type="int", default=4, help="SIMD units" \
68                  "per CU")
69parser.add_option("--wf-size", type="int", default=64,
70                  help="Wavefront size(in workitems)")
71parser.add_option("--wfs-per-simd", type="int", default=10, help="Number of " \
72                  "WF slots per SIMD")
73
74#
75# Add the ruby specific and protocol specific options
76#
77Ruby.define_options(parser)
78
79exec(compile( \
80    open(os.path.join(config_root, "common", "Options.py")).read(), \
81    os.path.join(config_root, "common", "Options.py"), 'exec'))
82
83(options, args) = parser.parse_args()
84
85#
86# Set the default cache size and associativity to be very small to encourage
87# races between requests and writebacks.
88#
89options.l1d_size="256B"
90options.l1i_size="256B"
91options.l2_size="512B"
92options.l3_size="1kB"
93options.l1d_assoc=2
94options.l1i_assoc=2
95options.l2_assoc=2
96options.l3_assoc=2
97
98# This file can support multiple compute units
99assert(options.num_compute_units >= 1)
100n_cu = options.num_compute_units
101
102options.num_sqc = int((n_cu + options.cu_per_sqc - 1) // options.cu_per_sqc)
103
104if args:
105     print("Error: script doesn't take any positional arguments")
106     sys.exit(1)
107
108#
109# Create the ruby random tester
110#
111
112# Check to for the GPU_RfO protocol.  Other GPU protocols are non-SC and will
113# not work with the Ruby random tester.
114assert(buildEnv['PROTOCOL'] == 'GPU_RfO')
115
116# The GPU_RfO protocol does not support cache flushes
117check_flush = False
118
119tester = RubyTester(check_flush=check_flush,
120                    checks_to_complete=options.maxloads,
121                    wakeup_frequency=options.wakeup_freq,
122                    deadlock_threshold=1000000)
123
124#
125# Create the M5 system.  Note that the Memory Object isn't
126# actually used by the rubytester, but is included to support the
127# M5 memory size == Ruby memory size checks
128#
129system = System(cpu=tester, mem_ranges=[AddrRange(options.mem_size)])
130
131# Create a top-level voltage domain and clock domain
132system.voltage_domain = VoltageDomain(voltage=options.sys_voltage)
133
134system.clk_domain = SrcClockDomain(clock=options.sys_clock,
135                                   voltage_domain=system.voltage_domain)
136
137Ruby.create_system(options, False, system)
138
139# Create a seperate clock domain for Ruby
140system.ruby.clk_domain = SrcClockDomain(clock=options.ruby_clock,
141                                       voltage_domain=system.voltage_domain)
142
143tester.num_cpus = len(system.ruby._cpu_ports)
144
145#
146# The tester is most effective when randomization is turned on and
147# artifical delay is randomly inserted on messages
148#
149system.ruby.randomization = True
150
151for ruby_port in system.ruby._cpu_ports:
152
153    #
154    # Tie the ruby tester ports to the ruby cpu read and write ports
155    #
156    if ruby_port.support_data_reqs and ruby_port.support_inst_reqs:
157        tester.cpuInstDataPort = ruby_port.slave
158    elif ruby_port.support_data_reqs:
159        tester.cpuDataPort = ruby_port.slave
160    elif ruby_port.support_inst_reqs:
161        tester.cpuInstPort = ruby_port.slave
162
163    # Do not automatically retry stalled Ruby requests
164    ruby_port.no_retry_on_stall = True
165
166    #
167    # Tell each sequencer this is the ruby tester so that it
168    # copies the subblock back to the checker
169    #
170    ruby_port.using_ruby_tester = True
171
172# -----------------------
173# run simulation
174# -----------------------
175
176root = Root( full_system = False, system = system )
177root.system.mem_mode = 'timing'
178
179# Not much point in this being higher than the L1 latency
180m5.ticks.setGlobalFrequency('1ns')
181
182# instantiate configuration
183m5.instantiate()
184
185# simulate until program terminates
186exit_event = m5.simulate(options.abs_max_tick)
187
188print('Exiting @ tick', m5.curTick(), 'because', exit_event.getCause())
189