1# Copyright (c) 2012-2013 ARM Limited
2# All rights reserved
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Copyright (c) 2006-2008 The Regents of The University of Michigan
14# Copyright (c) 2010 Advanced Micro Devices, Inc.
15# All rights reserved.
16#
17# Redistribution and use in source and binary forms, with or without
18# modification, are permitted provided that the following conditions are
19# met: redistributions of source code must retain the above copyright
20# notice, this list of conditions and the following disclaimer;
21# redistributions in binary form must reproduce the above copyright
22# notice, this list of conditions and the following disclaimer in the
23# documentation and/or other materials provided with the distribution;
24# neither the name of the copyright holders nor the names of its
25# contributors may be used to endorse or promote products derived from
26# this software without specific prior written permission.
27#
28# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39#
40# Authors: Lisa Hsu
41
42import sys
43from os import getcwd
44from os.path import join as joinpath
45
46import CpuConfig
47import MemConfig
48
49import m5
50from m5.defines import buildEnv
51from m5.objects import *
52from m5.util import *
53
54addToPath('../common')
55
56def getCPUClass(cpu_type):
57 """Returns the required cpu class and the mode of operation."""
58 cls = CpuConfig.get(cpu_type)
59 return cls, cls.memory_mode()
60
61def setCPUClass(options):
62 """Returns two cpu classes and the initial mode of operation.
63
64 Restoring from a checkpoint or fast forwarding through a benchmark
65 can be done using one type of cpu, and then the actual
66 simulation can be carried out using another type. This function
67 returns these two types of cpus and the initial mode of operation
68 depending on the options provided.
69 """
70
71 TmpClass, test_mem_mode = getCPUClass(options.cpu_type)
72 CPUClass = None
73 if TmpClass.require_caches() and \
74 not options.caches and not options.ruby:
75 fatal("%s must be used with caches" % options.cpu_type)
76
77 if options.checkpoint_restore != None:
78 if options.restore_with_cpu != options.cpu_type:
79 CPUClass = TmpClass
80 TmpClass, test_mem_mode = getCPUClass(options.restore_with_cpu)
81 elif options.fast_forward:
82 CPUClass = TmpClass
83 TmpClass = AtomicSimpleCPU
84 test_mem_mode = 'atomic'
85
86 return (TmpClass, test_mem_mode, CPUClass)
87
88def setMemClass(options):
89 """Returns a memory controller class."""
90
91 return MemConfig.get(options.mem_type)
92
93def setWorkCountOptions(system, options):
94 if options.work_item_id != None:
95 system.work_item_id = options.work_item_id
96 if options.num_work_ids != None:
97 system.num_work_ids = options.num_work_ids
98 if options.work_begin_cpu_id_exit != None:
99 system.work_begin_cpu_id_exit = options.work_begin_cpu_id_exit
100 if options.work_end_exit_count != None:
101 system.work_end_exit_count = options.work_end_exit_count
102 if options.work_end_checkpoint_count != None:
103 system.work_end_ckpt_count = options.work_end_checkpoint_count
104 if options.work_begin_exit_count != None:
105 system.work_begin_exit_count = options.work_begin_exit_count
106 if options.work_begin_checkpoint_count != None:
107 system.work_begin_ckpt_count = options.work_begin_checkpoint_count
108 if options.work_cpus_checkpoint_count != None:
109 system.work_cpus_ckpt_count = options.work_cpus_checkpoint_count
110
111def findCptDir(options, cptdir, testsys):
112 """Figures out the directory from which the checkpointed state is read.
113
114 There are two different ways in which the directories holding checkpoints
115 can be named --
116 1. cpt.<benchmark name>.<instruction count when the checkpoint was taken>
117 2. cpt.<some number, usually the tick value when the checkpoint was taken>
118
119 This function parses through the options to figure out which one of the
120 above should be used for selecting the checkpoint, and then figures out
121 the appropriate directory.
122 """
123
124 from os.path import isdir, exists
125 from os import listdir
126 import re
127
128 if not isdir(cptdir):
129 fatal("checkpoint dir %s does not exist!", cptdir)
130
131 cpt_starttick = 0
132 if options.at_instruction or options.simpoint:
133 inst = options.checkpoint_restore
134 if options.simpoint:
135 # assume workload 0 has the simpoint
136 if testsys.cpu[0].workload[0].simpoint == 0:
137 fatal('Unable to find simpoint')
138 inst += int(testsys.cpu[0].workload[0].simpoint)
139
140 checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % (options.bench, inst))
141 if not exists(checkpoint_dir):
142 fatal("Unable to find checkpoint directory %s", checkpoint_dir)
143
144 elif options.restore_simpoint_checkpoint:
145 # Restore from SimPoint checkpoints
146 # Assumes that the checkpoint dir names are formatted as follows:
147 dirs = listdir(cptdir)
148 expr = re.compile('cpt\.simpoint_(\d+)_inst_(\d+)' +
149 '_weight_([\d\.e\-]+)_interval_(\d+)_warmup_(\d+)')
150 cpts = []
151 for dir in dirs:
152 match = expr.match(dir)
153 if match:
154 cpts.append(dir)
155 cpts.sort()
156
157 cpt_num = options.checkpoint_restore
158 if cpt_num > len(cpts):
159 fatal('Checkpoint %d not found', cpt_num)
160 checkpoint_dir = joinpath(cptdir, cpts[cpt_num - 1])
161 match = expr.match(cpts[cpt_num - 1])
162 if match:
163 index = int(match.group(1))
164 start_inst = int(match.group(2))
165 weight_inst = float(match.group(3))
166 interval_length = int(match.group(4))
167 warmup_length = int(match.group(5))
168 print "Resuming from", checkpoint_dir
169 simpoint_start_insts = []
170 simpoint_start_insts.append(warmup_length)
171 simpoint_start_insts.append(warmup_length + interval_length)
172 testsys.cpu[0].simpoint_start_insts = simpoint_start_insts
173 if testsys.switch_cpus != None:
174 testsys.switch_cpus[0].simpoint_start_insts = simpoint_start_insts
175
176 print "Resuming from SimPoint",
177 print "#%d, start_inst:%d, weight:%f, interval:%d, warmup:%d" % \
178 (index, start_inst, weight_inst, interval_length, warmup_length)
179
180 else:
181 dirs = listdir(cptdir)
182 expr = re.compile('cpt\.([0-9]+)')
183 cpts = []
184 for dir in dirs:
185 match = expr.match(dir)
186 if match:
187 cpts.append(match.group(1))
188
189 cpts.sort(lambda a,b: cmp(long(a), long(b)))
190
191 cpt_num = options.checkpoint_restore
192 if cpt_num > len(cpts):
193 fatal('Checkpoint %d not found', cpt_num)
194
195 cpt_starttick = int(cpts[cpt_num - 1])
196 checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])
197
198 return cpt_starttick, checkpoint_dir
199
200def scriptCheckpoints(options, maxtick, cptdir):
201 if options.at_instruction or options.simpoint:
202 checkpoint_inst = int(options.take_checkpoints)
203
204 # maintain correct offset if we restored from some instruction
205 if options.checkpoint_restore != None:
206 checkpoint_inst += options.checkpoint_restore
207
208 print "Creating checkpoint at inst:%d" % (checkpoint_inst)
209 exit_event = m5.simulate()
210 exit_cause = exit_event.getCause()
211 print "exit cause = %s" % exit_cause
212
213 # skip checkpoint instructions should they exist
214 while exit_cause == "checkpoint":
215 exit_event = m5.simulate()
216 exit_cause = exit_event.getCause()
217
218 if exit_cause == "a thread reached the max instruction count":
219 m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
220 (options.bench, checkpoint_inst)))
221 print "Checkpoint written."
222
223 else:
224 when, period = options.take_checkpoints.split(",", 1)
225 when = int(when)
226 period = int(period)
227 num_checkpoints = 0
228
229 exit_event = m5.simulate(when - m5.curTick())
230 exit_cause = exit_event.getCause()
231 while exit_cause == "checkpoint":
232 exit_event = m5.simulate(when - m5.curTick())
233 exit_cause = exit_event.getCause()
234
235 if exit_cause == "simulate() limit reached":
236 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
237 num_checkpoints += 1
238
239 sim_ticks = when
240 max_checkpoints = options.max_checkpoints
241
242 while num_checkpoints < max_checkpoints and \
243 exit_cause == "simulate() limit reached":
244 if (sim_ticks + period) > maxtick:
245 exit_event = m5.simulate(maxtick - sim_ticks)
246 exit_cause = exit_event.getCause()
247 break
248 else:
249 exit_event = m5.simulate(period)
250 exit_cause = exit_event.getCause()
251 sim_ticks += period
252 while exit_event.getCause() == "checkpoint":
253 exit_event = m5.simulate(sim_ticks - m5.curTick())
254 if exit_event.getCause() == "simulate() limit reached":
255 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
256 num_checkpoints += 1
257
258 return exit_event
259
260def benchCheckpoints(options, maxtick, cptdir):
261 exit_event = m5.simulate(maxtick - m5.curTick())
262 exit_cause = exit_event.getCause()
263
264 num_checkpoints = 0
265 max_checkpoints = options.max_checkpoints
266
267 while exit_cause == "checkpoint":
268 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
269 num_checkpoints += 1
270 if num_checkpoints == max_checkpoints:
271 exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
272 break
273
274 exit_event = m5.simulate(maxtick - m5.curTick())
275 exit_cause = exit_event.getCause()
276
277 return exit_event
278
279# Set up environment for taking SimPoint checkpoints
280# Expecting SimPoint files generated by SimPoint 3.2
281def parseSimpointAnalysisFile(options, testsys):
282 import re
283
284 simpoint_filename, weight_filename, interval_length, warmup_length = \
285 options.take_simpoint_checkpoints.split(",", 3)
286 print "simpoint analysis file:", simpoint_filename
287 print "simpoint weight file:", weight_filename
288 print "interval length:", interval_length
289 print "warmup length:", warmup_length
290
291 interval_length = int(interval_length)
292 warmup_length = int(warmup_length)
293
294 # Simpoint analysis output starts interval counts with 0.
295 simpoints = []
296 simpoint_start_insts = []
297
298 # Read in SimPoint analysis files
299 simpoint_file = open(simpoint_filename)
300 weight_file = open(weight_filename)
301 while True:
302 line = simpoint_file.readline()
303 if not line:
304 break
305 m = re.match("(\d+)\s+(\d+)", line)
306 if m:
307 interval = int(m.group(1))
308 else:
309 fatal('unrecognized line in simpoint file!')
310
311 line = weight_file.readline()
312 if not line:
313 fatal('not enough lines in simpoint weight file!')
314 m = re.match("([0-9\.e\-]+)\s+(\d+)", line)
315 if m:
316 weight = float(m.group(1))
317 else:
318 fatal('unrecognized line in simpoint weight file!')
319
320 if (interval * interval_length - warmup_length > 0):
321 starting_inst_count = \
322 interval * interval_length - warmup_length
323 actual_warmup_length = warmup_length
324 else:
325 # Not enough room for proper warmup
326 # Just starting from the beginning
327 starting_inst_count = 0
328 actual_warmup_length = interval * interval_length
329
330 simpoints.append((interval, weight, starting_inst_count,
331 actual_warmup_length))
332
333 # Sort SimPoints by starting inst count
334 simpoints.sort(key=lambda obj: obj[2])
335 for s in simpoints:
336 interval, weight, starting_inst_count, actual_warmup_length = s
337 print str(interval), str(weight), starting_inst_count, \
338 actual_warmup_length
339 simpoint_start_insts.append(starting_inst_count)
340
341 print "Total # of simpoints:", len(simpoints)
342 testsys.cpu[0].simpoint_start_insts = simpoint_start_insts
343
344 return (simpoints, interval_length)
345
346def takeSimpointCheckpoints(simpoints, interval_length, cptdir):
347 num_checkpoints = 0
348 index = 0
349 last_chkpnt_inst_count = -1
350 for simpoint in simpoints:
351 interval, weight, starting_inst_count, actual_warmup_length = simpoint
352 if starting_inst_count == last_chkpnt_inst_count:
353 # checkpoint starting point same as last time
354 # (when warmup period longer than starting point)
355 exit_cause = "simpoint starting point found"
356 code = 0
357 else:
358 exit_event = m5.simulate()
359
360 # skip checkpoint instructions should they exist
361 while exit_event.getCause() == "checkpoint":
362 print "Found 'checkpoint' exit event...ignoring..."
363 exit_event = m5.simulate()
364
365 exit_cause = exit_event.getCause()
366 code = exit_event.getCode()
367
368 if exit_cause == "simpoint starting point found":
369 m5.checkpoint(joinpath(cptdir,
370 "cpt.simpoint_%02d_inst_%d_weight_%f_interval_%d_warmup_%d"
371 % (index, starting_inst_count, weight, interval_length,
372 actual_warmup_length)))
373 print "Checkpoint #%d written. start inst:%d weight:%f" % \
374 (num_checkpoints, starting_inst_count, weight)
375 num_checkpoints += 1
376 last_chkpnt_inst_count = starting_inst_count
377 else:
378 break
379 index += 1
380
381 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
382 print "%d checkpoints taken" % num_checkpoints
383 sys.exit(code)
384
385def restoreSimpointCheckpoint():
386 exit_event = m5.simulate()
387 exit_cause = exit_event.getCause()
388
389 if exit_cause == "simpoint starting point found":
390 print "Warmed up! Dumping and resetting stats!"
391 m5.stats.dump()
392 m5.stats.reset()
393
394 exit_event = m5.simulate()
395 exit_cause = exit_event.getCause()
396
397 if exit_cause == "simpoint starting point found":
398 print "Done running SimPoint!"
399 sys.exit(exit_event.getCode())
400
401 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
402 sys.exit(exit_event.getCode())
403
404def repeatSwitch(testsys, repeat_switch_cpu_list, maxtick, switch_freq):
405 print "starting switch loop"
406 while True:
407 exit_event = m5.simulate(switch_freq)
408 exit_cause = exit_event.getCause()
409
410 if exit_cause != "simulate() limit reached":
411 return exit_event
412
413 m5.switchCpus(testsys, repeat_switch_cpu_list)
414
415 tmp_cpu_list = []
416 for old_cpu, new_cpu in repeat_switch_cpu_list:
417 tmp_cpu_list.append((new_cpu, old_cpu))
418 repeat_switch_cpu_list = tmp_cpu_list
419
420 if (maxtick - m5.curTick()) <= switch_freq:
421 exit_event = m5.simulate(maxtick - m5.curTick())
422 return exit_event
423
424def run(options, root, testsys, cpu_class):
425 if options.checkpoint_dir:
426 cptdir = options.checkpoint_dir
427 elif m5.options.outdir:
428 cptdir = m5.options.outdir
429 else:
430 cptdir = getcwd()
431
432 if options.fast_forward and options.checkpoint_restore != None:
433 fatal("Can't specify both --fast-forward and --checkpoint-restore")
434
435 if options.standard_switch and not options.caches:
436 fatal("Must specify --caches when using --standard-switch")
437
438 if options.standard_switch and options.repeat_switch:
439 fatal("Can't specify both --standard-switch and --repeat-switch")
440
441 if options.repeat_switch and options.take_checkpoints:
442 fatal("Can't specify both --repeat-switch and --take-checkpoints")
443
444 np = options.num_cpus
445 switch_cpus = None
446
447 if options.prog_interval:
448 for i in xrange(np):
449 testsys.cpu[i].progress_interval = options.prog_interval
450
451 if options.maxinsts:
452 for i in xrange(np):
453 testsys.cpu[i].max_insts_any_thread = options.maxinsts
454
455 if cpu_class:
456 switch_cpus = [cpu_class(switched_out=True, cpu_id=(i))
457 for i in xrange(np)]
458
459 for i in xrange(np):
460 if options.fast_forward:
461 testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
462 switch_cpus[i].system = testsys
463 switch_cpus[i].workload = testsys.cpu[i].workload
464 switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
465 # simulation period
466 if options.maxinsts:
467 switch_cpus[i].max_insts_any_thread = options.maxinsts
468 # Add checker cpu if selected
469 if options.checker:
470 switch_cpus[i].addCheckerCpu()
471
472 testsys.switch_cpus = switch_cpus
473 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
474
475 if options.repeat_switch:
476 switch_class = getCPUClass(options.cpu_type)[0]
477 if switch_class.require_caches() and \
478 not options.caches:
479 print "%s: Must be used with caches" % str(switch_class)
480 sys.exit(1)
481 if not switch_class.support_take_over():
482 print "%s: CPU switching not supported" % str(switch_class)
483 sys.exit(1)
484
485 repeat_switch_cpus = [switch_class(switched_out=True, \
486 cpu_id=(i)) for i in xrange(np)]
487
488 for i in xrange(np):
489 repeat_switch_cpus[i].system = testsys
490 repeat_switch_cpus[i].workload = testsys.cpu[i].workload
491 repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
492
493 if options.maxinsts:
494 repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts
495
496 if options.checker:
497 repeat_switch_cpus[i].addCheckerCpu()
498
499 testsys.repeat_switch_cpus = repeat_switch_cpus
500
501 if cpu_class:
502 repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
503 for i in xrange(np)]
504 else:
505 repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
506 for i in xrange(np)]
507
508 if options.standard_switch:
509 switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i))
510 for i in xrange(np)]
511 switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i))
512 for i in xrange(np)]
513
514 for i in xrange(np):
515 switch_cpus[i].system = testsys
516 switch_cpus_1[i].system = testsys
517 switch_cpus[i].workload = testsys.cpu[i].workload
518 switch_cpus_1[i].workload = testsys.cpu[i].workload
519 switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
520 switch_cpus_1[i].clk_domain = testsys.cpu[i].clk_domain
521
522 # if restoring, make atomic cpu simulate only a few instructions
523 if options.checkpoint_restore != None:
524 testsys.cpu[i].max_insts_any_thread = 1
525 # Fast forward to specified location if we are not restoring
526 elif options.fast_forward:
527 testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
528 # Fast forward to a simpoint (warning: time consuming)
529 elif options.simpoint:
530 if testsys.cpu[i].workload[0].simpoint == 0:
531 fatal('simpoint not found')
532 testsys.cpu[i].max_insts_any_thread = \
533 testsys.cpu[i].workload[0].simpoint
534 # No distance specified, just switch
535 else:
536 testsys.cpu[i].max_insts_any_thread = 1
537
538 # warmup period
539 if options.warmup_insts:
540 switch_cpus[i].max_insts_any_thread = options.warmup_insts
541
542 # simulation period
543 if options.maxinsts:
544 switch_cpus_1[i].max_insts_any_thread = options.maxinsts
545
546 # attach the checker cpu if selected
547 if options.checker:
548 switch_cpus[i].addCheckerCpu()
549 switch_cpus_1[i].addCheckerCpu()
550
551 testsys.switch_cpus = switch_cpus
552 testsys.switch_cpus_1 = switch_cpus_1
553 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
554 switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]
555
556 # set the checkpoint in the cpu before m5.instantiate is called
557 if options.take_checkpoints != None and \
558 (options.simpoint or options.at_instruction):
559 offset = int(options.take_checkpoints)
560 # Set an instruction break point
561 if options.simpoint:
562 for i in xrange(np):
563 if testsys.cpu[i].workload[0].simpoint == 0:
564 fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
565 checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
566 testsys.cpu[i].max_insts_any_thread = checkpoint_inst
567 # used for output below
568 options.take_checkpoints = checkpoint_inst
569 else:
570 options.take_checkpoints = offset
571 # Set all test cpus with the right number of instructions
572 # for the upcoming simulation
573 for i in xrange(np):
574 testsys.cpu[i].max_insts_any_thread = offset
575
576 if options.take_simpoint_checkpoints != None:
577 simpoints, interval_length = parseSimpointAnalysisFile(options, testsys)
578
579 checkpoint_dir = None
580 if options.checkpoint_restore:
581 cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys)
582 m5.instantiate(checkpoint_dir)
583
| 1# Copyright (c) 2012-2013 ARM Limited
2# All rights reserved
3#
4# The license below extends only to copyright in the software and shall
5# not be construed as granting a license to any other intellectual
6# property including but not limited to intellectual property relating
7# to a hardware implementation of the functionality of the software
8# licensed hereunder. You may use the software subject to the license
9# terms below provided that you ensure that this notice is replicated
10# unmodified and in its entirety in all distributions of the software,
11# modified or unmodified, in source code or in binary form.
12#
13# Copyright (c) 2006-2008 The Regents of The University of Michigan
14# Copyright (c) 2010 Advanced Micro Devices, Inc.
15# All rights reserved.
16#
17# Redistribution and use in source and binary forms, with or without
18# modification, are permitted provided that the following conditions are
19# met: redistributions of source code must retain the above copyright
20# notice, this list of conditions and the following disclaimer;
21# redistributions in binary form must reproduce the above copyright
22# notice, this list of conditions and the following disclaimer in the
23# documentation and/or other materials provided with the distribution;
24# neither the name of the copyright holders nor the names of its
25# contributors may be used to endorse or promote products derived from
26# this software without specific prior written permission.
27#
28# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39#
40# Authors: Lisa Hsu
41
42import sys
43from os import getcwd
44from os.path import join as joinpath
45
46import CpuConfig
47import MemConfig
48
49import m5
50from m5.defines import buildEnv
51from m5.objects import *
52from m5.util import *
53
54addToPath('../common')
55
56def getCPUClass(cpu_type):
57 """Returns the required cpu class and the mode of operation."""
58 cls = CpuConfig.get(cpu_type)
59 return cls, cls.memory_mode()
60
61def setCPUClass(options):
62 """Returns two cpu classes and the initial mode of operation.
63
64 Restoring from a checkpoint or fast forwarding through a benchmark
65 can be done using one type of cpu, and then the actual
66 simulation can be carried out using another type. This function
67 returns these two types of cpus and the initial mode of operation
68 depending on the options provided.
69 """
70
71 TmpClass, test_mem_mode = getCPUClass(options.cpu_type)
72 CPUClass = None
73 if TmpClass.require_caches() and \
74 not options.caches and not options.ruby:
75 fatal("%s must be used with caches" % options.cpu_type)
76
77 if options.checkpoint_restore != None:
78 if options.restore_with_cpu != options.cpu_type:
79 CPUClass = TmpClass
80 TmpClass, test_mem_mode = getCPUClass(options.restore_with_cpu)
81 elif options.fast_forward:
82 CPUClass = TmpClass
83 TmpClass = AtomicSimpleCPU
84 test_mem_mode = 'atomic'
85
86 return (TmpClass, test_mem_mode, CPUClass)
87
88def setMemClass(options):
89 """Returns a memory controller class."""
90
91 return MemConfig.get(options.mem_type)
92
93def setWorkCountOptions(system, options):
94 if options.work_item_id != None:
95 system.work_item_id = options.work_item_id
96 if options.num_work_ids != None:
97 system.num_work_ids = options.num_work_ids
98 if options.work_begin_cpu_id_exit != None:
99 system.work_begin_cpu_id_exit = options.work_begin_cpu_id_exit
100 if options.work_end_exit_count != None:
101 system.work_end_exit_count = options.work_end_exit_count
102 if options.work_end_checkpoint_count != None:
103 system.work_end_ckpt_count = options.work_end_checkpoint_count
104 if options.work_begin_exit_count != None:
105 system.work_begin_exit_count = options.work_begin_exit_count
106 if options.work_begin_checkpoint_count != None:
107 system.work_begin_ckpt_count = options.work_begin_checkpoint_count
108 if options.work_cpus_checkpoint_count != None:
109 system.work_cpus_ckpt_count = options.work_cpus_checkpoint_count
110
111def findCptDir(options, cptdir, testsys):
112 """Figures out the directory from which the checkpointed state is read.
113
114 There are two different ways in which the directories holding checkpoints
115 can be named --
116 1. cpt.<benchmark name>.<instruction count when the checkpoint was taken>
117 2. cpt.<some number, usually the tick value when the checkpoint was taken>
118
119 This function parses through the options to figure out which one of the
120 above should be used for selecting the checkpoint, and then figures out
121 the appropriate directory.
122 """
123
124 from os.path import isdir, exists
125 from os import listdir
126 import re
127
128 if not isdir(cptdir):
129 fatal("checkpoint dir %s does not exist!", cptdir)
130
131 cpt_starttick = 0
132 if options.at_instruction or options.simpoint:
133 inst = options.checkpoint_restore
134 if options.simpoint:
135 # assume workload 0 has the simpoint
136 if testsys.cpu[0].workload[0].simpoint == 0:
137 fatal('Unable to find simpoint')
138 inst += int(testsys.cpu[0].workload[0].simpoint)
139
140 checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % (options.bench, inst))
141 if not exists(checkpoint_dir):
142 fatal("Unable to find checkpoint directory %s", checkpoint_dir)
143
144 elif options.restore_simpoint_checkpoint:
145 # Restore from SimPoint checkpoints
146 # Assumes that the checkpoint dir names are formatted as follows:
147 dirs = listdir(cptdir)
148 expr = re.compile('cpt\.simpoint_(\d+)_inst_(\d+)' +
149 '_weight_([\d\.e\-]+)_interval_(\d+)_warmup_(\d+)')
150 cpts = []
151 for dir in dirs:
152 match = expr.match(dir)
153 if match:
154 cpts.append(dir)
155 cpts.sort()
156
157 cpt_num = options.checkpoint_restore
158 if cpt_num > len(cpts):
159 fatal('Checkpoint %d not found', cpt_num)
160 checkpoint_dir = joinpath(cptdir, cpts[cpt_num - 1])
161 match = expr.match(cpts[cpt_num - 1])
162 if match:
163 index = int(match.group(1))
164 start_inst = int(match.group(2))
165 weight_inst = float(match.group(3))
166 interval_length = int(match.group(4))
167 warmup_length = int(match.group(5))
168 print "Resuming from", checkpoint_dir
169 simpoint_start_insts = []
170 simpoint_start_insts.append(warmup_length)
171 simpoint_start_insts.append(warmup_length + interval_length)
172 testsys.cpu[0].simpoint_start_insts = simpoint_start_insts
173 if testsys.switch_cpus != None:
174 testsys.switch_cpus[0].simpoint_start_insts = simpoint_start_insts
175
176 print "Resuming from SimPoint",
177 print "#%d, start_inst:%d, weight:%f, interval:%d, warmup:%d" % \
178 (index, start_inst, weight_inst, interval_length, warmup_length)
179
180 else:
181 dirs = listdir(cptdir)
182 expr = re.compile('cpt\.([0-9]+)')
183 cpts = []
184 for dir in dirs:
185 match = expr.match(dir)
186 if match:
187 cpts.append(match.group(1))
188
189 cpts.sort(lambda a,b: cmp(long(a), long(b)))
190
191 cpt_num = options.checkpoint_restore
192 if cpt_num > len(cpts):
193 fatal('Checkpoint %d not found', cpt_num)
194
195 cpt_starttick = int(cpts[cpt_num - 1])
196 checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1])
197
198 return cpt_starttick, checkpoint_dir
199
200def scriptCheckpoints(options, maxtick, cptdir):
201 if options.at_instruction or options.simpoint:
202 checkpoint_inst = int(options.take_checkpoints)
203
204 # maintain correct offset if we restored from some instruction
205 if options.checkpoint_restore != None:
206 checkpoint_inst += options.checkpoint_restore
207
208 print "Creating checkpoint at inst:%d" % (checkpoint_inst)
209 exit_event = m5.simulate()
210 exit_cause = exit_event.getCause()
211 print "exit cause = %s" % exit_cause
212
213 # skip checkpoint instructions should they exist
214 while exit_cause == "checkpoint":
215 exit_event = m5.simulate()
216 exit_cause = exit_event.getCause()
217
218 if exit_cause == "a thread reached the max instruction count":
219 m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \
220 (options.bench, checkpoint_inst)))
221 print "Checkpoint written."
222
223 else:
224 when, period = options.take_checkpoints.split(",", 1)
225 when = int(when)
226 period = int(period)
227 num_checkpoints = 0
228
229 exit_event = m5.simulate(when - m5.curTick())
230 exit_cause = exit_event.getCause()
231 while exit_cause == "checkpoint":
232 exit_event = m5.simulate(when - m5.curTick())
233 exit_cause = exit_event.getCause()
234
235 if exit_cause == "simulate() limit reached":
236 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
237 num_checkpoints += 1
238
239 sim_ticks = when
240 max_checkpoints = options.max_checkpoints
241
242 while num_checkpoints < max_checkpoints and \
243 exit_cause == "simulate() limit reached":
244 if (sim_ticks + period) > maxtick:
245 exit_event = m5.simulate(maxtick - sim_ticks)
246 exit_cause = exit_event.getCause()
247 break
248 else:
249 exit_event = m5.simulate(period)
250 exit_cause = exit_event.getCause()
251 sim_ticks += period
252 while exit_event.getCause() == "checkpoint":
253 exit_event = m5.simulate(sim_ticks - m5.curTick())
254 if exit_event.getCause() == "simulate() limit reached":
255 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
256 num_checkpoints += 1
257
258 return exit_event
259
260def benchCheckpoints(options, maxtick, cptdir):
261 exit_event = m5.simulate(maxtick - m5.curTick())
262 exit_cause = exit_event.getCause()
263
264 num_checkpoints = 0
265 max_checkpoints = options.max_checkpoints
266
267 while exit_cause == "checkpoint":
268 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
269 num_checkpoints += 1
270 if num_checkpoints == max_checkpoints:
271 exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
272 break
273
274 exit_event = m5.simulate(maxtick - m5.curTick())
275 exit_cause = exit_event.getCause()
276
277 return exit_event
278
279# Set up environment for taking SimPoint checkpoints
280# Expecting SimPoint files generated by SimPoint 3.2
281def parseSimpointAnalysisFile(options, testsys):
282 import re
283
284 simpoint_filename, weight_filename, interval_length, warmup_length = \
285 options.take_simpoint_checkpoints.split(",", 3)
286 print "simpoint analysis file:", simpoint_filename
287 print "simpoint weight file:", weight_filename
288 print "interval length:", interval_length
289 print "warmup length:", warmup_length
290
291 interval_length = int(interval_length)
292 warmup_length = int(warmup_length)
293
294 # Simpoint analysis output starts interval counts with 0.
295 simpoints = []
296 simpoint_start_insts = []
297
298 # Read in SimPoint analysis files
299 simpoint_file = open(simpoint_filename)
300 weight_file = open(weight_filename)
301 while True:
302 line = simpoint_file.readline()
303 if not line:
304 break
305 m = re.match("(\d+)\s+(\d+)", line)
306 if m:
307 interval = int(m.group(1))
308 else:
309 fatal('unrecognized line in simpoint file!')
310
311 line = weight_file.readline()
312 if not line:
313 fatal('not enough lines in simpoint weight file!')
314 m = re.match("([0-9\.e\-]+)\s+(\d+)", line)
315 if m:
316 weight = float(m.group(1))
317 else:
318 fatal('unrecognized line in simpoint weight file!')
319
320 if (interval * interval_length - warmup_length > 0):
321 starting_inst_count = \
322 interval * interval_length - warmup_length
323 actual_warmup_length = warmup_length
324 else:
325 # Not enough room for proper warmup
326 # Just starting from the beginning
327 starting_inst_count = 0
328 actual_warmup_length = interval * interval_length
329
330 simpoints.append((interval, weight, starting_inst_count,
331 actual_warmup_length))
332
333 # Sort SimPoints by starting inst count
334 simpoints.sort(key=lambda obj: obj[2])
335 for s in simpoints:
336 interval, weight, starting_inst_count, actual_warmup_length = s
337 print str(interval), str(weight), starting_inst_count, \
338 actual_warmup_length
339 simpoint_start_insts.append(starting_inst_count)
340
341 print "Total # of simpoints:", len(simpoints)
342 testsys.cpu[0].simpoint_start_insts = simpoint_start_insts
343
344 return (simpoints, interval_length)
345
346def takeSimpointCheckpoints(simpoints, interval_length, cptdir):
347 num_checkpoints = 0
348 index = 0
349 last_chkpnt_inst_count = -1
350 for simpoint in simpoints:
351 interval, weight, starting_inst_count, actual_warmup_length = simpoint
352 if starting_inst_count == last_chkpnt_inst_count:
353 # checkpoint starting point same as last time
354 # (when warmup period longer than starting point)
355 exit_cause = "simpoint starting point found"
356 code = 0
357 else:
358 exit_event = m5.simulate()
359
360 # skip checkpoint instructions should they exist
361 while exit_event.getCause() == "checkpoint":
362 print "Found 'checkpoint' exit event...ignoring..."
363 exit_event = m5.simulate()
364
365 exit_cause = exit_event.getCause()
366 code = exit_event.getCode()
367
368 if exit_cause == "simpoint starting point found":
369 m5.checkpoint(joinpath(cptdir,
370 "cpt.simpoint_%02d_inst_%d_weight_%f_interval_%d_warmup_%d"
371 % (index, starting_inst_count, weight, interval_length,
372 actual_warmup_length)))
373 print "Checkpoint #%d written. start inst:%d weight:%f" % \
374 (num_checkpoints, starting_inst_count, weight)
375 num_checkpoints += 1
376 last_chkpnt_inst_count = starting_inst_count
377 else:
378 break
379 index += 1
380
381 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
382 print "%d checkpoints taken" % num_checkpoints
383 sys.exit(code)
384
385def restoreSimpointCheckpoint():
386 exit_event = m5.simulate()
387 exit_cause = exit_event.getCause()
388
389 if exit_cause == "simpoint starting point found":
390 print "Warmed up! Dumping and resetting stats!"
391 m5.stats.dump()
392 m5.stats.reset()
393
394 exit_event = m5.simulate()
395 exit_cause = exit_event.getCause()
396
397 if exit_cause == "simpoint starting point found":
398 print "Done running SimPoint!"
399 sys.exit(exit_event.getCode())
400
401 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)
402 sys.exit(exit_event.getCode())
403
404def repeatSwitch(testsys, repeat_switch_cpu_list, maxtick, switch_freq):
405 print "starting switch loop"
406 while True:
407 exit_event = m5.simulate(switch_freq)
408 exit_cause = exit_event.getCause()
409
410 if exit_cause != "simulate() limit reached":
411 return exit_event
412
413 m5.switchCpus(testsys, repeat_switch_cpu_list)
414
415 tmp_cpu_list = []
416 for old_cpu, new_cpu in repeat_switch_cpu_list:
417 tmp_cpu_list.append((new_cpu, old_cpu))
418 repeat_switch_cpu_list = tmp_cpu_list
419
420 if (maxtick - m5.curTick()) <= switch_freq:
421 exit_event = m5.simulate(maxtick - m5.curTick())
422 return exit_event
423
424def run(options, root, testsys, cpu_class):
425 if options.checkpoint_dir:
426 cptdir = options.checkpoint_dir
427 elif m5.options.outdir:
428 cptdir = m5.options.outdir
429 else:
430 cptdir = getcwd()
431
432 if options.fast_forward and options.checkpoint_restore != None:
433 fatal("Can't specify both --fast-forward and --checkpoint-restore")
434
435 if options.standard_switch and not options.caches:
436 fatal("Must specify --caches when using --standard-switch")
437
438 if options.standard_switch and options.repeat_switch:
439 fatal("Can't specify both --standard-switch and --repeat-switch")
440
441 if options.repeat_switch and options.take_checkpoints:
442 fatal("Can't specify both --repeat-switch and --take-checkpoints")
443
444 np = options.num_cpus
445 switch_cpus = None
446
447 if options.prog_interval:
448 for i in xrange(np):
449 testsys.cpu[i].progress_interval = options.prog_interval
450
451 if options.maxinsts:
452 for i in xrange(np):
453 testsys.cpu[i].max_insts_any_thread = options.maxinsts
454
455 if cpu_class:
456 switch_cpus = [cpu_class(switched_out=True, cpu_id=(i))
457 for i in xrange(np)]
458
459 for i in xrange(np):
460 if options.fast_forward:
461 testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
462 switch_cpus[i].system = testsys
463 switch_cpus[i].workload = testsys.cpu[i].workload
464 switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
465 # simulation period
466 if options.maxinsts:
467 switch_cpus[i].max_insts_any_thread = options.maxinsts
468 # Add checker cpu if selected
469 if options.checker:
470 switch_cpus[i].addCheckerCpu()
471
472 testsys.switch_cpus = switch_cpus
473 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
474
475 if options.repeat_switch:
476 switch_class = getCPUClass(options.cpu_type)[0]
477 if switch_class.require_caches() and \
478 not options.caches:
479 print "%s: Must be used with caches" % str(switch_class)
480 sys.exit(1)
481 if not switch_class.support_take_over():
482 print "%s: CPU switching not supported" % str(switch_class)
483 sys.exit(1)
484
485 repeat_switch_cpus = [switch_class(switched_out=True, \
486 cpu_id=(i)) for i in xrange(np)]
487
488 for i in xrange(np):
489 repeat_switch_cpus[i].system = testsys
490 repeat_switch_cpus[i].workload = testsys.cpu[i].workload
491 repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
492
493 if options.maxinsts:
494 repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts
495
496 if options.checker:
497 repeat_switch_cpus[i].addCheckerCpu()
498
499 testsys.repeat_switch_cpus = repeat_switch_cpus
500
501 if cpu_class:
502 repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i])
503 for i in xrange(np)]
504 else:
505 repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i])
506 for i in xrange(np)]
507
508 if options.standard_switch:
509 switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i))
510 for i in xrange(np)]
511 switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i))
512 for i in xrange(np)]
513
514 for i in xrange(np):
515 switch_cpus[i].system = testsys
516 switch_cpus_1[i].system = testsys
517 switch_cpus[i].workload = testsys.cpu[i].workload
518 switch_cpus_1[i].workload = testsys.cpu[i].workload
519 switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain
520 switch_cpus_1[i].clk_domain = testsys.cpu[i].clk_domain
521
522 # if restoring, make atomic cpu simulate only a few instructions
523 if options.checkpoint_restore != None:
524 testsys.cpu[i].max_insts_any_thread = 1
525 # Fast forward to specified location if we are not restoring
526 elif options.fast_forward:
527 testsys.cpu[i].max_insts_any_thread = int(options.fast_forward)
528 # Fast forward to a simpoint (warning: time consuming)
529 elif options.simpoint:
530 if testsys.cpu[i].workload[0].simpoint == 0:
531 fatal('simpoint not found')
532 testsys.cpu[i].max_insts_any_thread = \
533 testsys.cpu[i].workload[0].simpoint
534 # No distance specified, just switch
535 else:
536 testsys.cpu[i].max_insts_any_thread = 1
537
538 # warmup period
539 if options.warmup_insts:
540 switch_cpus[i].max_insts_any_thread = options.warmup_insts
541
542 # simulation period
543 if options.maxinsts:
544 switch_cpus_1[i].max_insts_any_thread = options.maxinsts
545
546 # attach the checker cpu if selected
547 if options.checker:
548 switch_cpus[i].addCheckerCpu()
549 switch_cpus_1[i].addCheckerCpu()
550
551 testsys.switch_cpus = switch_cpus
552 testsys.switch_cpus_1 = switch_cpus_1
553 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
554 switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)]
555
556 # set the checkpoint in the cpu before m5.instantiate is called
557 if options.take_checkpoints != None and \
558 (options.simpoint or options.at_instruction):
559 offset = int(options.take_checkpoints)
560 # Set an instruction break point
561 if options.simpoint:
562 for i in xrange(np):
563 if testsys.cpu[i].workload[0].simpoint == 0:
564 fatal('no simpoint for testsys.cpu[%d].workload[0]', i)
565 checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset
566 testsys.cpu[i].max_insts_any_thread = checkpoint_inst
567 # used for output below
568 options.take_checkpoints = checkpoint_inst
569 else:
570 options.take_checkpoints = offset
571 # Set all test cpus with the right number of instructions
572 # for the upcoming simulation
573 for i in xrange(np):
574 testsys.cpu[i].max_insts_any_thread = offset
575
576 if options.take_simpoint_checkpoints != None:
577 simpoints, interval_length = parseSimpointAnalysisFile(options, testsys)
578
579 checkpoint_dir = None
580 if options.checkpoint_restore:
581 cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys)
582 m5.instantiate(checkpoint_dir)
583
|
584 # Handle the max tick settings now that tick frequency was resolved
585 # during system instantiation
586 # NOTE: the maxtick variable here is in absolute ticks, so it must
587 # include any simulated ticks before a checkpoint
588 explicit_maxticks = 0
589 maxtick_from_abs = m5.MaxTick
590 maxtick_from_rel = m5.MaxTick
591 maxtick_from_maxtime = m5.MaxTick
592 if options.abs_max_tick:
593 maxtick_from_abs = options.abs_max_tick
594 explicit_maxticks += 1
595 if options.rel_max_tick:
596 maxtick_from_rel = options.rel_max_tick
597 if options.checkpoint_restore:
598 # NOTE: this may need to be updated if checkpoints ever store
599 # the ticks per simulated second
600 maxtick_from_rel += cpt_starttick
601 if options.at_instruction or options.simpoint:
602 warn("Relative max tick specified with --at-instruction or" \
603 " --simpoint\n These options don't specify the " \
604 "checkpoint start tick, so assuming\n you mean " \
605 "absolute max tick")
606 explicit_maxticks += 1
607 if options.maxtime:
608 maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime)
609 explicit_maxticks += 1
610 if explicit_maxticks > 1:
611 warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
612 " Using least")
613 maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime])
614
615 if options.checkpoint_restore != None and maxtick < cpt_starttick:
616 fatal("Bad maxtick (%d) specified: " \
617 "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick)
618
619 if options.standard_switch or cpu_class:
620 if options.standard_switch:
621 print "Switch at instruction count:%s" % \
622 str(testsys.cpu[0].max_insts_any_thread)
623 exit_event = m5.simulate()
624 elif cpu_class and options.fast_forward:
625 print "Switch at instruction count:%s" % \
626 str(testsys.cpu[0].max_insts_any_thread)
627 exit_event = m5.simulate()
628 else:
629 print "Switch at curTick count:%s" % str(10000)
630 exit_event = m5.simulate(10000)
631 print "Switched CPUS @ tick %s" % (m5.curTick())
632
633 m5.switchCpus(testsys, switch_cpu_list)
634
635 if options.standard_switch:
636 print "Switch at instruction count:%d" % \
637 (testsys.switch_cpus[0].max_insts_any_thread)
638
639 #warmup instruction count may have already been set
640 if options.warmup_insts:
641 exit_event = m5.simulate()
642 else:
643 exit_event = m5.simulate(options.standard_switch)
644 print "Switching CPUS @ tick %s" % (m5.curTick())
645 print "Simulation ends instruction count:%d" % \
646 (testsys.switch_cpus_1[0].max_insts_any_thread)
647 m5.switchCpus(testsys, switch_cpu_list1)
648
649 # If we're taking and restoring checkpoints, use checkpoint_dir
650 # option only for finding the checkpoints to restore from. This
651 # lets us test checkpointing by restoring from one set of
652 # checkpoints, generating a second set, and then comparing them.
653 if (options.take_checkpoints or options.take_simpoint_checkpoints) \
654 and options.checkpoint_restore:
655
656 if m5.options.outdir:
657 cptdir = m5.options.outdir
658 else:
659 cptdir = getcwd()
660
661 if options.take_checkpoints != None :
662 # Checkpoints being taken via the command line at <when> and at
663 # subsequent periods of <period>. Checkpoint instructions
664 # received from the benchmark running are ignored and skipped in
665 # favor of command line checkpoint instructions.
666 exit_event = scriptCheckpoints(options, maxtick, cptdir)
667
668 # Take SimPoint checkpoints
669 elif options.take_simpoint_checkpoints != None:
670 takeSimpointCheckpoints(simpoints, interval_length, cptdir)
671
672 # Restore from SimPoint checkpoints
673 elif options.restore_simpoint_checkpoint != None:
674 restoreSimpointCheckpoint()
675
676 else:
677 if options.fast_forward:
678 m5.stats.reset()
679 print "**** REAL SIMULATION ****"
680
681 # If checkpoints are being taken, then the checkpoint instruction
682 # will occur in the benchmark code it self.
683 if options.repeat_switch and maxtick > options.repeat_switch:
684 exit_event = repeatSwitch(testsys, repeat_switch_cpu_list,
685 maxtick, options.repeat_switch)
686 else:
687 exit_event = benchCheckpoints(options, maxtick, cptdir)
688
689 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
690 if options.checkpoint_at_end:
691 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
692
693 if not m5.options.interactive:
694 sys.exit(exit_event.getCode())
| 591 # Handle the max tick settings now that tick frequency was resolved
592 # during system instantiation
593 # NOTE: the maxtick variable here is in absolute ticks, so it must
594 # include any simulated ticks before a checkpoint
595 explicit_maxticks = 0
596 maxtick_from_abs = m5.MaxTick
597 maxtick_from_rel = m5.MaxTick
598 maxtick_from_maxtime = m5.MaxTick
599 if options.abs_max_tick:
600 maxtick_from_abs = options.abs_max_tick
601 explicit_maxticks += 1
602 if options.rel_max_tick:
603 maxtick_from_rel = options.rel_max_tick
604 if options.checkpoint_restore:
605 # NOTE: this may need to be updated if checkpoints ever store
606 # the ticks per simulated second
607 maxtick_from_rel += cpt_starttick
608 if options.at_instruction or options.simpoint:
609 warn("Relative max tick specified with --at-instruction or" \
610 " --simpoint\n These options don't specify the " \
611 "checkpoint start tick, so assuming\n you mean " \
612 "absolute max tick")
613 explicit_maxticks += 1
614 if options.maxtime:
615 maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime)
616 explicit_maxticks += 1
617 if explicit_maxticks > 1:
618 warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\
619 " Using least")
620 maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime])
621
622 if options.checkpoint_restore != None and maxtick < cpt_starttick:
623 fatal("Bad maxtick (%d) specified: " \
624 "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick)
625
626 if options.standard_switch or cpu_class:
627 if options.standard_switch:
628 print "Switch at instruction count:%s" % \
629 str(testsys.cpu[0].max_insts_any_thread)
630 exit_event = m5.simulate()
631 elif cpu_class and options.fast_forward:
632 print "Switch at instruction count:%s" % \
633 str(testsys.cpu[0].max_insts_any_thread)
634 exit_event = m5.simulate()
635 else:
636 print "Switch at curTick count:%s" % str(10000)
637 exit_event = m5.simulate(10000)
638 print "Switched CPUS @ tick %s" % (m5.curTick())
639
640 m5.switchCpus(testsys, switch_cpu_list)
641
642 if options.standard_switch:
643 print "Switch at instruction count:%d" % \
644 (testsys.switch_cpus[0].max_insts_any_thread)
645
646 #warmup instruction count may have already been set
647 if options.warmup_insts:
648 exit_event = m5.simulate()
649 else:
650 exit_event = m5.simulate(options.standard_switch)
651 print "Switching CPUS @ tick %s" % (m5.curTick())
652 print "Simulation ends instruction count:%d" % \
653 (testsys.switch_cpus_1[0].max_insts_any_thread)
654 m5.switchCpus(testsys, switch_cpu_list1)
655
656 # If we're taking and restoring checkpoints, use checkpoint_dir
657 # option only for finding the checkpoints to restore from. This
658 # lets us test checkpointing by restoring from one set of
659 # checkpoints, generating a second set, and then comparing them.
660 if (options.take_checkpoints or options.take_simpoint_checkpoints) \
661 and options.checkpoint_restore:
662
663 if m5.options.outdir:
664 cptdir = m5.options.outdir
665 else:
666 cptdir = getcwd()
667
668 if options.take_checkpoints != None :
669 # Checkpoints being taken via the command line at <when> and at
670 # subsequent periods of <period>. Checkpoint instructions
671 # received from the benchmark running are ignored and skipped in
672 # favor of command line checkpoint instructions.
673 exit_event = scriptCheckpoints(options, maxtick, cptdir)
674
675 # Take SimPoint checkpoints
676 elif options.take_simpoint_checkpoints != None:
677 takeSimpointCheckpoints(simpoints, interval_length, cptdir)
678
679 # Restore from SimPoint checkpoints
680 elif options.restore_simpoint_checkpoint != None:
681 restoreSimpointCheckpoint()
682
683 else:
684 if options.fast_forward:
685 m5.stats.reset()
686 print "**** REAL SIMULATION ****"
687
688 # If checkpoints are being taken, then the checkpoint instruction
689 # will occur in the benchmark code it self.
690 if options.repeat_switch and maxtick > options.repeat_switch:
691 exit_event = repeatSwitch(testsys, repeat_switch_cpu_list,
692 maxtick, options.repeat_switch)
693 else:
694 exit_event = benchCheckpoints(options, maxtick, cptdir)
695
696 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause())
697 if options.checkpoint_at_end:
698 m5.checkpoint(joinpath(cptdir, "cpt.%d"))
699
700 if not m5.options.interactive:
701 sys.exit(exit_event.getCode())
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