Simulation.py revision 11320
112855Sgabeblack@google.com# Copyright (c) 2012-2013 ARM Limited 212855Sgabeblack@google.com# All rights reserved 312855Sgabeblack@google.com# 412855Sgabeblack@google.com# The license below extends only to copyright in the software and shall 512855Sgabeblack@google.com# not be construed as granting a license to any other intellectual 612855Sgabeblack@google.com# property including but not limited to intellectual property relating 712855Sgabeblack@google.com# to a hardware implementation of the functionality of the software 812855Sgabeblack@google.com# licensed hereunder. You may use the software subject to the license 912855Sgabeblack@google.com# terms below provided that you ensure that this notice is replicated 1012855Sgabeblack@google.com# unmodified and in its entirety in all distributions of the software, 1112855Sgabeblack@google.com# modified or unmodified, in source code or in binary form. 1212855Sgabeblack@google.com# 1312855Sgabeblack@google.com# Copyright (c) 2006-2008 The Regents of The University of Michigan 1412855Sgabeblack@google.com# Copyright (c) 2010 Advanced Micro Devices, Inc. 1512855Sgabeblack@google.com# All rights reserved. 1612855Sgabeblack@google.com# 1712855Sgabeblack@google.com# Redistribution and use in source and binary forms, with or without 1812855Sgabeblack@google.com# modification, are permitted provided that the following conditions are 1912855Sgabeblack@google.com# met: redistributions of source code must retain the above copyright 2012855Sgabeblack@google.com# notice, this list of conditions and the following disclaimer; 2112855Sgabeblack@google.com# redistributions in binary form must reproduce the above copyright 2212855Sgabeblack@google.com# notice, this list of conditions and the following disclaimer in the 2312855Sgabeblack@google.com# documentation and/or other materials provided with the distribution; 2412855Sgabeblack@google.com# neither the name of the copyright holders nor the names of its 2512855Sgabeblack@google.com# contributors may be used to endorse or promote products derived from 2612855Sgabeblack@google.com# this software without specific prior written permission. 2712855Sgabeblack@google.com# 2812855Sgabeblack@google.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2912855Sgabeblack@google.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 3012855Sgabeblack@google.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 3112855Sgabeblack@google.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 3212855Sgabeblack@google.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 3312855Sgabeblack@google.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3412855Sgabeblack@google.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3512855Sgabeblack@google.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3612855Sgabeblack@google.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3712855Sgabeblack@google.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3812855Sgabeblack@google.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3912855Sgabeblack@google.com# 4012855Sgabeblack@google.com# Authors: Lisa Hsu 4112855Sgabeblack@google.com 4212855Sgabeblack@google.comimport sys 4312855Sgabeblack@google.comfrom os import getcwd 4412855Sgabeblack@google.comfrom os.path import join as joinpath 4512855Sgabeblack@google.com 4612855Sgabeblack@google.comimport CpuConfig 4712855Sgabeblack@google.comimport MemConfig 4812855Sgabeblack@google.com 4912855Sgabeblack@google.comimport m5 5012855Sgabeblack@google.comfrom m5.defines import buildEnv 5112855Sgabeblack@google.comfrom m5.objects import * 5212855Sgabeblack@google.comfrom m5.util import * 5312855Sgabeblack@google.com 5412855Sgabeblack@google.comaddToPath('../common') 5512855Sgabeblack@google.com 5612855Sgabeblack@google.comdef getCPUClass(cpu_type): 5712855Sgabeblack@google.com """Returns the required cpu class and the mode of operation.""" 5812855Sgabeblack@google.com cls = CpuConfig.get(cpu_type) 5912855Sgabeblack@google.com return cls, cls.memory_mode() 6012855Sgabeblack@google.com 6112855Sgabeblack@google.comdef setCPUClass(options): 6212855Sgabeblack@google.com """Returns two cpu classes and the initial mode of operation. 6312855Sgabeblack@google.com 6412855Sgabeblack@google.com Restoring from a checkpoint or fast forwarding through a benchmark 6512855Sgabeblack@google.com can be done using one type of cpu, and then the actual 6612855Sgabeblack@google.com simulation can be carried out using another type. This function 6712855Sgabeblack@google.com returns these two types of cpus and the initial mode of operation 6812855Sgabeblack@google.com depending on the options provided. 6912855Sgabeblack@google.com """ 7012855Sgabeblack@google.com 7112855Sgabeblack@google.com TmpClass, test_mem_mode = getCPUClass(options.cpu_type) 7212855Sgabeblack@google.com CPUClass = None 7312855Sgabeblack@google.com if TmpClass.require_caches() and \ 7412855Sgabeblack@google.com not options.caches and not options.ruby: 7512855Sgabeblack@google.com fatal("%s must be used with caches" % options.cpu_type) 7612855Sgabeblack@google.com 7712855Sgabeblack@google.com if options.checkpoint_restore != None: 7812855Sgabeblack@google.com if options.restore_with_cpu != options.cpu_type: 7912855Sgabeblack@google.com CPUClass = TmpClass 8012855Sgabeblack@google.com TmpClass, test_mem_mode = getCPUClass(options.restore_with_cpu) 8112855Sgabeblack@google.com elif options.fast_forward: 8212855Sgabeblack@google.com CPUClass = TmpClass 8312855Sgabeblack@google.com TmpClass = AtomicSimpleCPU 8412855Sgabeblack@google.com test_mem_mode = 'atomic' 8512855Sgabeblack@google.com 8612855Sgabeblack@google.com return (TmpClass, test_mem_mode, CPUClass) 8712855Sgabeblack@google.com 8812855Sgabeblack@google.comdef setMemClass(options): 8912855Sgabeblack@google.com """Returns a memory controller class.""" 9012855Sgabeblack@google.com 9112855Sgabeblack@google.com return MemConfig.get(options.mem_type) 9212855Sgabeblack@google.com 9312855Sgabeblack@google.comdef setWorkCountOptions(system, options): 9412855Sgabeblack@google.com if options.work_item_id != None: 9512855Sgabeblack@google.com system.work_item_id = options.work_item_id 9612855Sgabeblack@google.com if options.num_work_ids != None: 9712855Sgabeblack@google.com system.num_work_ids = options.num_work_ids 9812855Sgabeblack@google.com if options.work_begin_cpu_id_exit != None: 9912855Sgabeblack@google.com system.work_begin_cpu_id_exit = options.work_begin_cpu_id_exit 10012855Sgabeblack@google.com if options.work_end_exit_count != None: 10112855Sgabeblack@google.com system.work_end_exit_count = options.work_end_exit_count 10212855Sgabeblack@google.com if options.work_end_checkpoint_count != None: 10312855Sgabeblack@google.com system.work_end_ckpt_count = options.work_end_checkpoint_count 10412855Sgabeblack@google.com if options.work_begin_exit_count != None: 10512855Sgabeblack@google.com system.work_begin_exit_count = options.work_begin_exit_count 10612855Sgabeblack@google.com if options.work_begin_checkpoint_count != None: 10712855Sgabeblack@google.com system.work_begin_ckpt_count = options.work_begin_checkpoint_count 10812855Sgabeblack@google.com if options.work_cpus_checkpoint_count != None: 10912855Sgabeblack@google.com system.work_cpus_ckpt_count = options.work_cpus_checkpoint_count 11012855Sgabeblack@google.com 11112855Sgabeblack@google.comdef findCptDir(options, cptdir, testsys): 11212855Sgabeblack@google.com """Figures out the directory from which the checkpointed state is read. 11312855Sgabeblack@google.com 11412855Sgabeblack@google.com There are two different ways in which the directories holding checkpoints 11512855Sgabeblack@google.com can be named -- 11612855Sgabeblack@google.com 1. cpt.<benchmark name>.<instruction count when the checkpoint was taken> 11712855Sgabeblack@google.com 2. cpt.<some number, usually the tick value when the checkpoint was taken> 11812855Sgabeblack@google.com 11912855Sgabeblack@google.com This function parses through the options to figure out which one of the 12012855Sgabeblack@google.com above should be used for selecting the checkpoint, and then figures out 12112855Sgabeblack@google.com the appropriate directory. 12212855Sgabeblack@google.com """ 12312855Sgabeblack@google.com 12412855Sgabeblack@google.com from os.path import isdir, exists 12512855Sgabeblack@google.com from os import listdir 12612855Sgabeblack@google.com import re 12712855Sgabeblack@google.com 12812855Sgabeblack@google.com if not isdir(cptdir): 12912855Sgabeblack@google.com fatal("checkpoint dir %s does not exist!", cptdir) 13012855Sgabeblack@google.com 13112855Sgabeblack@google.com cpt_starttick = 0 13212855Sgabeblack@google.com if options.at_instruction or options.simpoint: 13312855Sgabeblack@google.com inst = options.checkpoint_restore 13412855Sgabeblack@google.com if options.simpoint: 13512855Sgabeblack@google.com # assume workload 0 has the simpoint 13612855Sgabeblack@google.com if testsys.cpu[0].workload[0].simpoint == 0: 13712855Sgabeblack@google.com fatal('Unable to find simpoint') 13812855Sgabeblack@google.com inst += int(testsys.cpu[0].workload[0].simpoint) 13912855Sgabeblack@google.com 14012855Sgabeblack@google.com checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % (options.bench, inst)) 14112855Sgabeblack@google.com if not exists(checkpoint_dir): 14212855Sgabeblack@google.com fatal("Unable to find checkpoint directory %s", checkpoint_dir) 14312855Sgabeblack@google.com 14412855Sgabeblack@google.com elif options.restore_simpoint_checkpoint: 14512855Sgabeblack@google.com # Restore from SimPoint checkpoints 14612855Sgabeblack@google.com # Assumes that the checkpoint dir names are formatted as follows: 14712855Sgabeblack@google.com dirs = listdir(cptdir) 14812855Sgabeblack@google.com expr = re.compile('cpt\.simpoint_(\d+)_inst_(\d+)' + 14912855Sgabeblack@google.com '_weight_([\d\.e\-]+)_interval_(\d+)_warmup_(\d+)') 15012855Sgabeblack@google.com cpts = [] 15112855Sgabeblack@google.com for dir in dirs: 15212855Sgabeblack@google.com match = expr.match(dir) 15312855Sgabeblack@google.com if match: 15412855Sgabeblack@google.com cpts.append(dir) 15512855Sgabeblack@google.com cpts.sort() 15612855Sgabeblack@google.com 15712855Sgabeblack@google.com 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 switch_cpus[i].progress_interval = \ 466 testsys.cpu[i].progress_interval 467 # simulation period 468 if options.maxinsts: 469 switch_cpus[i].max_insts_any_thread = options.maxinsts 470 # Add checker cpu if selected 471 if options.checker: 472 switch_cpus[i].addCheckerCpu() 473 474 # If elastic tracing is enabled attach the elastic trace probe 475 # to the switch CPUs 476 if options.elastic_trace_en: 477 CpuConfig.config_etrace(cpu_class, switch_cpus, options) 478 479 testsys.switch_cpus = switch_cpus 480 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)] 481 482 if options.repeat_switch: 483 switch_class = getCPUClass(options.cpu_type)[0] 484 if switch_class.require_caches() and \ 485 not options.caches: 486 print "%s: Must be used with caches" % str(switch_class) 487 sys.exit(1) 488 if not switch_class.support_take_over(): 489 print "%s: CPU switching not supported" % str(switch_class) 490 sys.exit(1) 491 492 repeat_switch_cpus = [switch_class(switched_out=True, \ 493 cpu_id=(i)) for i in xrange(np)] 494 495 for i in xrange(np): 496 repeat_switch_cpus[i].system = testsys 497 repeat_switch_cpus[i].workload = testsys.cpu[i].workload 498 repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain 499 500 if options.maxinsts: 501 repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts 502 503 if options.checker: 504 repeat_switch_cpus[i].addCheckerCpu() 505 506 testsys.repeat_switch_cpus = repeat_switch_cpus 507 508 if cpu_class: 509 repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i]) 510 for i in xrange(np)] 511 else: 512 repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i]) 513 for i in xrange(np)] 514 515 if options.standard_switch: 516 switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i)) 517 for i in xrange(np)] 518 switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i)) 519 for i in xrange(np)] 520 521 for i in xrange(np): 522 switch_cpus[i].system = testsys 523 switch_cpus_1[i].system = testsys 524 switch_cpus[i].workload = testsys.cpu[i].workload 525 switch_cpus_1[i].workload = testsys.cpu[i].workload 526 switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain 527 switch_cpus_1[i].clk_domain = testsys.cpu[i].clk_domain 528 529 # if restoring, make atomic cpu simulate only a few instructions 530 if options.checkpoint_restore != None: 531 testsys.cpu[i].max_insts_any_thread = 1 532 # Fast forward to specified location if we are not restoring 533 elif options.fast_forward: 534 testsys.cpu[i].max_insts_any_thread = int(options.fast_forward) 535 # Fast forward to a simpoint (warning: time consuming) 536 elif options.simpoint: 537 if testsys.cpu[i].workload[0].simpoint == 0: 538 fatal('simpoint not found') 539 testsys.cpu[i].max_insts_any_thread = \ 540 testsys.cpu[i].workload[0].simpoint 541 # No distance specified, just switch 542 else: 543 testsys.cpu[i].max_insts_any_thread = 1 544 545 # warmup period 546 if options.warmup_insts: 547 switch_cpus[i].max_insts_any_thread = options.warmup_insts 548 549 # simulation period 550 if options.maxinsts: 551 switch_cpus_1[i].max_insts_any_thread = options.maxinsts 552 553 # attach the checker cpu if selected 554 if options.checker: 555 switch_cpus[i].addCheckerCpu() 556 switch_cpus_1[i].addCheckerCpu() 557 558 testsys.switch_cpus = switch_cpus 559 testsys.switch_cpus_1 = switch_cpus_1 560 switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)] 561 switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)] 562 563 # set the checkpoint in the cpu before m5.instantiate is called 564 if options.take_checkpoints != None and \ 565 (options.simpoint or options.at_instruction): 566 offset = int(options.take_checkpoints) 567 # Set an instruction break point 568 if options.simpoint: 569 for i in xrange(np): 570 if testsys.cpu[i].workload[0].simpoint == 0: 571 fatal('no simpoint for testsys.cpu[%d].workload[0]', i) 572 checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset 573 testsys.cpu[i].max_insts_any_thread = checkpoint_inst 574 # used for output below 575 options.take_checkpoints = checkpoint_inst 576 else: 577 options.take_checkpoints = offset 578 # Set all test cpus with the right number of instructions 579 # for the upcoming simulation 580 for i in xrange(np): 581 testsys.cpu[i].max_insts_any_thread = offset 582 583 if options.take_simpoint_checkpoints != None: 584 simpoints, interval_length = parseSimpointAnalysisFile(options, testsys) 585 586 checkpoint_dir = None 587 if options.checkpoint_restore: 588 cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys) 589 m5.instantiate(checkpoint_dir) 590 591 # Initialization is complete. If we're not in control of simulation 592 # (that is, if we're a slave simulator acting as a component in another 593 # 'master' simulator) then we're done here. The other simulator will 594 # call simulate() directly. --initialize-only is used to indicate this. 595 if options.initialize_only: 596 return 597 598 # Handle the max tick settings now that tick frequency was resolved 599 # during system instantiation 600 # NOTE: the maxtick variable here is in absolute ticks, so it must 601 # include any simulated ticks before a checkpoint 602 explicit_maxticks = 0 603 maxtick_from_abs = m5.MaxTick 604 maxtick_from_rel = m5.MaxTick 605 maxtick_from_maxtime = m5.MaxTick 606 if options.abs_max_tick: 607 maxtick_from_abs = options.abs_max_tick 608 explicit_maxticks += 1 609 if options.rel_max_tick: 610 maxtick_from_rel = options.rel_max_tick 611 if options.checkpoint_restore: 612 # NOTE: this may need to be updated if checkpoints ever store 613 # the ticks per simulated second 614 maxtick_from_rel += cpt_starttick 615 if options.at_instruction or options.simpoint: 616 warn("Relative max tick specified with --at-instruction or" \ 617 " --simpoint\n These options don't specify the " \ 618 "checkpoint start tick, so assuming\n you mean " \ 619 "absolute max tick") 620 explicit_maxticks += 1 621 if options.maxtime: 622 maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime) 623 explicit_maxticks += 1 624 if explicit_maxticks > 1: 625 warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\ 626 " Using least") 627 maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime]) 628 629 if options.checkpoint_restore != None and maxtick < cpt_starttick: 630 fatal("Bad maxtick (%d) specified: " \ 631 "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick) 632 633 if options.standard_switch or cpu_class: 634 if options.standard_switch: 635 print "Switch at instruction count:%s" % \ 636 str(testsys.cpu[0].max_insts_any_thread) 637 exit_event = m5.simulate() 638 elif cpu_class and options.fast_forward: 639 print "Switch at instruction count:%s" % \ 640 str(testsys.cpu[0].max_insts_any_thread) 641 exit_event = m5.simulate() 642 else: 643 print "Switch at curTick count:%s" % str(10000) 644 exit_event = m5.simulate(10000) 645 print "Switched CPUS @ tick %s" % (m5.curTick()) 646 647 m5.switchCpus(testsys, switch_cpu_list) 648 649 if options.standard_switch: 650 print "Switch at instruction count:%d" % \ 651 (testsys.switch_cpus[0].max_insts_any_thread) 652 653 #warmup instruction count may have already been set 654 if options.warmup_insts: 655 exit_event = m5.simulate() 656 else: 657 exit_event = m5.simulate(options.standard_switch) 658 print "Switching CPUS @ tick %s" % (m5.curTick()) 659 print "Simulation ends instruction count:%d" % \ 660 (testsys.switch_cpus_1[0].max_insts_any_thread) 661 m5.switchCpus(testsys, switch_cpu_list1) 662 663 # If we're taking and restoring checkpoints, use checkpoint_dir 664 # option only for finding the checkpoints to restore from. This 665 # lets us test checkpointing by restoring from one set of 666 # checkpoints, generating a second set, and then comparing them. 667 if (options.take_checkpoints or options.take_simpoint_checkpoints) \ 668 and options.checkpoint_restore: 669 670 if m5.options.outdir: 671 cptdir = m5.options.outdir 672 else: 673 cptdir = getcwd() 674 675 if options.take_checkpoints != None : 676 # Checkpoints being taken via the command line at <when> and at 677 # subsequent periods of <period>. Checkpoint instructions 678 # received from the benchmark running are ignored and skipped in 679 # favor of command line checkpoint instructions. 680 exit_event = scriptCheckpoints(options, maxtick, cptdir) 681 682 # Take SimPoint checkpoints 683 elif options.take_simpoint_checkpoints != None: 684 takeSimpointCheckpoints(simpoints, interval_length, cptdir) 685 686 # Restore from SimPoint checkpoints 687 elif options.restore_simpoint_checkpoint != None: 688 restoreSimpointCheckpoint() 689 690 else: 691 if options.fast_forward: 692 m5.stats.reset() 693 print "**** REAL SIMULATION ****" 694 695 # If checkpoints are being taken, then the checkpoint instruction 696 # will occur in the benchmark code it self. 697 if options.repeat_switch and maxtick > options.repeat_switch: 698 exit_event = repeatSwitch(testsys, repeat_switch_cpu_list, 699 maxtick, options.repeat_switch) 700 else: 701 exit_event = benchCheckpoints(options, maxtick, cptdir) 702 703 print 'Exiting @ tick %i because %s' % (m5.curTick(), exit_event.getCause()) 704 if options.checkpoint_at_end: 705 m5.checkpoint(joinpath(cptdir, "cpt.%d")) 706 707 if not m5.options.interactive: 708 sys.exit(exit_event.getCode()) 709