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1# Copyright (c) 2006 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright

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35from SysPaths import *
36from Benchmarks import *
37
38if not m5.build_env['FULL_SYSTEM']:
39 m5.panic("This script requires full-system mode (ALPHA_FS).")
40
41parser = optparse.OptionParser()
42
43# Benchmark options
44parser.add_option("--dual", action="store_true",
45 help="Simulate two systems attached with an ethernet link")
46parser.add_option("-b", "--benchmark", action="store", type="string",
47 dest="benchmark",
48 help="Specify the benchmark to run. Available benchmarks: %s"\
49 % DefinedBenchmarks)
50
51# system options
52parser.add_option("-d", "--detailed", action="store_true")
53parser.add_option("-t", "--timing", action="store_true")
54parser.add_option("-n", "--num_cpus", type="int", default=1)
55parser.add_option("--caches", action="store_true")
56
57# Run duration options
58parser.add_option("-m", "--maxtick", type="int")
59parser.add_option("--maxtime", type="float")
60
61# Metafile options
62parser.add_option("--etherdump", action="store", type="string", dest="etherdump",
63 help="Specify the filename to dump a pcap capture of the" \
64 "ethernet traffic")
65
66# Checkpointing options
67###Note that performing checkpointing via python script files will override
68###checkpoint instructions built into binaries.
69parser.add_option("--take_checkpoints", action="store", type="string",
70 help="<M,N> will take checkpoint at cycle M and every N cycles \
71 thereafter")
72parser.add_option("--max_checkpoints", action="store", type="int",
73 help="the maximum number of checkpoints to drop",
74 default=5)
75parser.add_option("--checkpoint_dir", action="store", type="string",
76 help="Place all checkpoints in this absolute directory")
77parser.add_option("-r", "--checkpoint_restore", action="store", type="int",
78 help="restore from checkpoint <N>")
79
80# CPU Switching - default switch model goes from a checkpoint
81# to a timing simple CPU with caches to warm up, then to detailed CPU for
82# data measurement
83parser.add_option("-s", "--standard_switch", action="store_true",
84 help="switch from one cpu mode to another")
85
86(options, args) = parser.parse_args()
87
88if args:
89 print "Error: script doesn't take any positional arguments"
90 sys.exit(1)
91
92class MyCache(BaseCache):
93 assoc = 2
94 block_size = 64
95 latency = 1
96 mshrs = 10
97 tgts_per_mshr = 5
98
99# driver system CPU is always simple... note this is an assignment of
100# a class, not an instance.
101DriveCPUClass = AtomicSimpleCPU
102drive_mem_mode = 'atomic'
103
104# system under test can be any of these CPUs
105if options.detailed:
106 TestCPUClass = DerivO3CPU
107 test_mem_mode = 'timing'
108elif options.timing:
109 TestCPUClass = TimingSimpleCPU
110 test_mem_mode = 'timing'
111else:
112 TestCPUClass = AtomicSimpleCPU
113 test_mem_mode = 'atomic'
114
115TestCPUClass.clock = '2GHz'
116DriveCPUClass.clock = '2GHz'
117
118if options.benchmark:
119 try:
120 bm = Benchmarks[options.benchmark]
121 except KeyError:
122 print "Error benchmark %s has not been defined." % options.benchmark
123 print "Valid benchmarks are: %s" % DefinedBenchmarks
124 sys.exit(1)
125else:
126 if options.dual:
127 bm = [SysConfig(), SysConfig()]
128 else:
129 bm = [SysConfig()]
130
131test_sys = makeLinuxAlphaSystem(test_mem_mode, bm[0])
132np = options.num_cpus
133test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)]
134for i in xrange(np):
135 if options.caches and not options.standard_switch:
136 test_sys.cpu[i].addPrivateSplitL1Caches(MyCache(size = '32kB'),
137 MyCache(size = '64kB'))
138 test_sys.cpu[i].connectMemPorts(test_sys.membus)
139 test_sys.cpu[i].mem = test_sys.physmem
140
141if len(bm) == 2:
142 drive_sys = makeLinuxAlphaSystem(drive_mem_mode, bm[1])
143 drive_sys.cpu = DriveCPUClass(cpu_id=0)
144 drive_sys.cpu.connectMemPorts(drive_sys.membus)
145 drive_sys.cpu.mem = drive_sys.physmem
146 root = makeDualRoot(test_sys, drive_sys, options.etherdump)
147elif len(bm) == 1:
148 root = Root(clock = '1THz', system = test_sys)
149else:
150 print "Error I don't know how to create more than 2 systems."
151 sys.exit(1)
152
153if options.standard_switch:
154 switch_cpus = [TimingSimpleCPU(defer_registration=True, cpu_id=(np+i) for i in xrange(np))]
155 switch_cpus1 = [DerivO3CPU(defer_registration=True, cpu_id=(2*np+i) for i in xrange(np))]
156 for i in xrange(np):
157 switch_cpus[i].system = test_sys
158 switch_cpus1[i].system = test_sys
159 switch_cpus[i].clock = TestCPUClass.clock
160 switch_cpus1[i].clock = TestCPUClass.clock
161 if options.caches:
162 switch_cpus[i].addPrivateSplitL1Caches(MyCache(size = '32kB'),
163 MyCache(size = '64kB'))
164
165 switch_cpus[i].mem = test_sys.physmem
166 switch_cpus1[i].mem = test_sys.physmem
167 switch_cpus[i].connectMemPorts(test_sys.membus)
168 root.switch_cpus = switch_cpus
169 root.switch_cpus1 = switch_cpus1
170 switch_cpu_list = [(test_sys.cpu[i], switch_cpus[i]) for i in xrange(np)]
171 switch_cpu_list1 = [(switch_cpus[i], switch_cpus1[i]) for i in xrange(np)]
172
173m5.instantiate(root)
174
175if options.checkpoint_dir:
176 cptdir = options.checkpoint_dir
177else:
178 cptdir = getcwd()
179
180if options.checkpoint_restore:
181 from os.path import isdir
182 from os import listdir, getcwd
183 import re
184
185 if not isdir(cptdir):
186 m5.panic("checkpoint dir %s does not exist!" % cptdir)
187
188 dirs = listdir(cptdir)
189 expr = re.compile('cpt.([0-9]*)')
190 cpts = []
191 for dir in dirs:
192 match = expr.match(dir)
193 if match:
194 cpts.append(match.group(1))
195
196 cpts.sort(lambda a,b: cmp(long(a), long(b)))
197
198 if options.checkpoint_restore > len(cpts):
199 m5.panic('Checkpoint %d not found' % options.checkpoint_restore)
200
201 m5.restoreCheckpoint(root, "/".join([cptdir, "cpt.%s" % cpts[options.checkpoint_restore - 1]]))
202
203if options.standard_switch:
204 exit_event = m5.simulate(1000)
205 ## when you change to Timing (or Atomic), you halt the system given
206 ## as argument. When you are finished with the system changes
207 ## (including switchCpus), you must resume the system manually.
208 ## You DON'T need to resume after just switching CPUs if you haven't
209 ## changed anything on the system level.
210 m5.changeToTiming(test_sys)
211 m5.switchCpus(switch_cpu_list)
212 m5.resume(test_sys)
213
214 exit_event = m5.simulate(300000000000)
215 m5.switchCpus(switch_cpu_list1)
216
217if options.maxtick:
218 maxtick = options.maxtick
219elif options.maxtime:
220 simtime = int(options.maxtime * root.clock.value)
221 print "simulating for: ", simtime
222 maxtick = simtime
223else:
224 maxtick = -1
225
226num_checkpoints = 0
227
228exit_cause = ''
229
230if options.take_checkpoints:
231 [when, period] = options.take_checkpoints.split(",", 1)
232 when = int(when)
233 period = int(period)
234
235 exit_event = m5.simulate(when)
236 while exit_event.getCause() == "checkpoint":
237 exit_event = m5.simulate(when - m5.curTick())
238
239 if exit_event.getCause() == "simulate() limit reached":
240 m5.checkpoint(root, cptdir + "cpt.%d")
241 num_checkpoints += 1
242
243 sim_ticks = when
244 exit_cause = "maximum %d checkpoints dropped" % options.max_checkpoints
245 while num_checkpoints < options.max_checkpoints:
246 if (sim_ticks + period) > maxtick and maxtick != -1:
247 exit_event = m5.simulate(maxtick - sim_ticks)
248 exit_cause = exit_event.getCause()
249 break
250 else:
251 exit_event = m5.simulate(period)
252 sim_ticks += period
253 while exit_event.getCause() == "checkpoint":
254 exit_event = m5.simulate(period - m5.curTick())
255 if exit_event.getCause() == "simulate() limit reached":
256 m5.checkpoint(root, cptdir + "cpt.%d")
257 num_checkpoints += 1
258
259else: #no checkpoints being taken via this script
260 exit_event = m5.simulate(maxtick)
261
262 while exit_event.getCause() == "checkpoint":
263 m5.checkpoint(root, cptdir + "cpt.%d")
264 num_checkpoints += 1
265 if num_checkpoints == options.max_checkpoints:
266 exit_cause = "maximum %d checkpoints dropped" % options.max_checkpoints
267 break
268
269 if maxtick == -1:
270 exit_event = m5.simulate(maxtick)
271 else:
272 exit_event = m5.simulate(maxtick - m5.curTick())
273
274 exit_cause = exit_event.getCause()
275
276if exit_cause == '':
277 exit_cause = exit_event.getCause()
278print 'Exiting @ cycle', m5.curTick(), 'because ', exit_cause