| # Copyright (c) 2012-2013 ARM Limited |
| # All rights reserved |
| # |
| # The license below extends only to copyright in the software and shall |
| # not be construed as granting a license to any other intellectual |
| # property including but not limited to intellectual property relating |
| # to a hardware implementation of the functionality of the software |
| # licensed hereunder. You may use the software subject to the license |
| # terms below provided that you ensure that this notice is replicated |
| # unmodified and in its entirety in all distributions of the software, |
| # modified or unmodified, in source code or in binary form. |
| # |
| # Copyright (c) 2006-2008 The Regents of The University of Michigan |
| # Copyright (c) 2010 Advanced Micro Devices, Inc. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer; |
| # redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution; |
| # neither the name of the copyright holders nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| # Authors: Lisa Hsu |
| |
| from __future__ import print_function |
| |
| import sys |
| from os import getcwd |
| from os.path import join as joinpath |
| |
| from common import CpuConfig |
| from common import MemConfig |
| |
| import m5 |
| from m5.defines import buildEnv |
| from m5.objects import * |
| from m5.util import * |
| |
| addToPath('../common') |
| |
| def getCPUClass(cpu_type): |
| """Returns the required cpu class and the mode of operation.""" |
| cls = CpuConfig.get(cpu_type) |
| return cls, cls.memory_mode() |
| |
| def setCPUClass(options): |
| """Returns two cpu classes and the initial mode of operation. |
| |
| Restoring from a checkpoint or fast forwarding through a benchmark |
| can be done using one type of cpu, and then the actual |
| simulation can be carried out using another type. This function |
| returns these two types of cpus and the initial mode of operation |
| depending on the options provided. |
| """ |
| |
| TmpClass, test_mem_mode = getCPUClass(options.cpu_type) |
| CPUClass = None |
| if TmpClass.require_caches() and \ |
| not options.caches and not options.ruby: |
| fatal("%s must be used with caches" % options.cpu_type) |
| |
| if options.checkpoint_restore != None: |
| if options.restore_with_cpu != options.cpu_type: |
| CPUClass = TmpClass |
| TmpClass, test_mem_mode = getCPUClass(options.restore_with_cpu) |
| elif options.fast_forward: |
| CPUClass = TmpClass |
| TmpClass = AtomicSimpleCPU |
| test_mem_mode = 'atomic' |
| |
| # Ruby only supports atomic accesses in noncaching mode |
| if test_mem_mode == 'atomic' and options.ruby: |
| warn("Memory mode will be changed to atomic_noncaching") |
| test_mem_mode = 'atomic_noncaching' |
| |
| return (TmpClass, test_mem_mode, CPUClass) |
| |
| def setMemClass(options): |
| """Returns a memory controller class.""" |
| |
| return MemConfig.get(options.mem_type) |
| |
| def setWorkCountOptions(system, options): |
| if options.work_item_id != None: |
| system.work_item_id = options.work_item_id |
| if options.num_work_ids != None: |
| system.num_work_ids = options.num_work_ids |
| if options.work_begin_cpu_id_exit != None: |
| system.work_begin_cpu_id_exit = options.work_begin_cpu_id_exit |
| if options.work_end_exit_count != None: |
| system.work_end_exit_count = options.work_end_exit_count |
| if options.work_end_checkpoint_count != None: |
| system.work_end_ckpt_count = options.work_end_checkpoint_count |
| if options.work_begin_exit_count != None: |
| system.work_begin_exit_count = options.work_begin_exit_count |
| if options.work_begin_checkpoint_count != None: |
| system.work_begin_ckpt_count = options.work_begin_checkpoint_count |
| if options.work_cpus_checkpoint_count != None: |
| system.work_cpus_ckpt_count = options.work_cpus_checkpoint_count |
| |
| def findCptDir(options, cptdir, testsys): |
| """Figures out the directory from which the checkpointed state is read. |
| |
| There are two different ways in which the directories holding checkpoints |
| can be named -- |
| 1. cpt.<benchmark name>.<instruction count when the checkpoint was taken> |
| 2. cpt.<some number, usually the tick value when the checkpoint was taken> |
| |
| This function parses through the options to figure out which one of the |
| above should be used for selecting the checkpoint, and then figures out |
| the appropriate directory. |
| """ |
| |
| from os.path import isdir, exists |
| from os import listdir |
| import re |
| |
| if not isdir(cptdir): |
| fatal("checkpoint dir %s does not exist!", cptdir) |
| |
| cpt_starttick = 0 |
| if options.at_instruction or options.simpoint: |
| inst = options.checkpoint_restore |
| if options.simpoint: |
| # assume workload 0 has the simpoint |
| if testsys.cpu[0].workload[0].simpoint == 0: |
| fatal('Unable to find simpoint') |
| inst += int(testsys.cpu[0].workload[0].simpoint) |
| |
| checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % (options.bench, inst)) |
| if not exists(checkpoint_dir): |
| fatal("Unable to find checkpoint directory %s", checkpoint_dir) |
| |
| elif options.restore_simpoint_checkpoint: |
| # Restore from SimPoint checkpoints |
| # Assumes that the checkpoint dir names are formatted as follows: |
| dirs = listdir(cptdir) |
| expr = re.compile('cpt\.simpoint_(\d+)_inst_(\d+)' + |
| '_weight_([\d\.e\-]+)_interval_(\d+)_warmup_(\d+)') |
| cpts = [] |
| for dir in dirs: |
| match = expr.match(dir) |
| if match: |
| cpts.append(dir) |
| cpts.sort() |
| |
| cpt_num = options.checkpoint_restore |
| if cpt_num > len(cpts): |
| fatal('Checkpoint %d not found', cpt_num) |
| checkpoint_dir = joinpath(cptdir, cpts[cpt_num - 1]) |
| match = expr.match(cpts[cpt_num - 1]) |
| if match: |
| index = int(match.group(1)) |
| start_inst = int(match.group(2)) |
| weight_inst = float(match.group(3)) |
| interval_length = int(match.group(4)) |
| warmup_length = int(match.group(5)) |
| print("Resuming from", checkpoint_dir) |
| simpoint_start_insts = [] |
| simpoint_start_insts.append(warmup_length) |
| simpoint_start_insts.append(warmup_length + interval_length) |
| testsys.cpu[0].simpoint_start_insts = simpoint_start_insts |
| if testsys.switch_cpus != None: |
| testsys.switch_cpus[0].simpoint_start_insts = simpoint_start_insts |
| |
| print("Resuming from SimPoint", end=' ') |
| print("#%d, start_inst:%d, weight:%f, interval:%d, warmup:%d" % |
| (index, start_inst, weight_inst, interval_length, warmup_length)) |
| |
| else: |
| dirs = listdir(cptdir) |
| expr = re.compile('cpt\.([0-9]+)') |
| cpts = [] |
| for dir in dirs: |
| match = expr.match(dir) |
| if match: |
| cpts.append(match.group(1)) |
| |
| cpts.sort(lambda a,b: cmp(long(a), long(b))) |
| |
| cpt_num = options.checkpoint_restore |
| if cpt_num > len(cpts): |
| fatal('Checkpoint %d not found', cpt_num) |
| |
| cpt_starttick = int(cpts[cpt_num - 1]) |
| checkpoint_dir = joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1]) |
| |
| return cpt_starttick, checkpoint_dir |
| |
| def scriptCheckpoints(options, maxtick, cptdir): |
| if options.at_instruction or options.simpoint: |
| checkpoint_inst = int(options.take_checkpoints) |
| |
| # maintain correct offset if we restored from some instruction |
| if options.checkpoint_restore != None: |
| checkpoint_inst += options.checkpoint_restore |
| |
| print("Creating checkpoint at inst:%d" % (checkpoint_inst)) |
| exit_event = m5.simulate() |
| exit_cause = exit_event.getCause() |
| print("exit cause = %s" % exit_cause) |
| |
| # skip checkpoint instructions should they exist |
| while exit_cause == "checkpoint": |
| exit_event = m5.simulate() |
| exit_cause = exit_event.getCause() |
| |
| if exit_cause == "a thread reached the max instruction count": |
| m5.checkpoint(joinpath(cptdir, "cpt.%s.%d" % \ |
| (options.bench, checkpoint_inst))) |
| print("Checkpoint written.") |
| |
| else: |
| when, period = options.take_checkpoints.split(",", 1) |
| when = int(when) |
| period = int(period) |
| num_checkpoints = 0 |
| |
| exit_event = m5.simulate(when - m5.curTick()) |
| exit_cause = exit_event.getCause() |
| while exit_cause == "checkpoint": |
| exit_event = m5.simulate(when - m5.curTick()) |
| exit_cause = exit_event.getCause() |
| |
| if exit_cause == "simulate() limit reached": |
| m5.checkpoint(joinpath(cptdir, "cpt.%d")) |
| num_checkpoints += 1 |
| |
| sim_ticks = when |
| max_checkpoints = options.max_checkpoints |
| |
| while num_checkpoints < max_checkpoints and \ |
| exit_cause == "simulate() limit reached": |
| if (sim_ticks + period) > maxtick: |
| exit_event = m5.simulate(maxtick - sim_ticks) |
| exit_cause = exit_event.getCause() |
| break |
| else: |
| exit_event = m5.simulate(period) |
| exit_cause = exit_event.getCause() |
| sim_ticks += period |
| while exit_event.getCause() == "checkpoint": |
| exit_event = m5.simulate(sim_ticks - m5.curTick()) |
| if exit_event.getCause() == "simulate() limit reached": |
| m5.checkpoint(joinpath(cptdir, "cpt.%d")) |
| num_checkpoints += 1 |
| |
| return exit_event |
| |
| def benchCheckpoints(options, maxtick, cptdir): |
| exit_event = m5.simulate(maxtick - m5.curTick()) |
| exit_cause = exit_event.getCause() |
| |
| num_checkpoints = 0 |
| max_checkpoints = options.max_checkpoints |
| |
| while exit_cause == "checkpoint": |
| m5.checkpoint(joinpath(cptdir, "cpt.%d")) |
| num_checkpoints += 1 |
| if num_checkpoints == max_checkpoints: |
| exit_cause = "maximum %d checkpoints dropped" % max_checkpoints |
| break |
| |
| exit_event = m5.simulate(maxtick - m5.curTick()) |
| exit_cause = exit_event.getCause() |
| |
| return exit_event |
| |
| # Set up environment for taking SimPoint checkpoints |
| # Expecting SimPoint files generated by SimPoint 3.2 |
| def parseSimpointAnalysisFile(options, testsys): |
| import re |
| |
| simpoint_filename, weight_filename, interval_length, warmup_length = \ |
| options.take_simpoint_checkpoints.split(",", 3) |
| print("simpoint analysis file:", simpoint_filename) |
| print("simpoint weight file:", weight_filename) |
| print("interval length:", interval_length) |
| print("warmup length:", warmup_length) |
| |
| interval_length = int(interval_length) |
| warmup_length = int(warmup_length) |
| |
| # Simpoint analysis output starts interval counts with 0. |
| simpoints = [] |
| simpoint_start_insts = [] |
| |
| # Read in SimPoint analysis files |
| simpoint_file = open(simpoint_filename) |
| weight_file = open(weight_filename) |
| while True: |
| line = simpoint_file.readline() |
| if not line: |
| break |
| m = re.match("(\d+)\s+(\d+)", line) |
| if m: |
| interval = int(m.group(1)) |
| else: |
| fatal('unrecognized line in simpoint file!') |
| |
| line = weight_file.readline() |
| if not line: |
| fatal('not enough lines in simpoint weight file!') |
| m = re.match("([0-9\.e\-]+)\s+(\d+)", line) |
| if m: |
| weight = float(m.group(1)) |
| else: |
| fatal('unrecognized line in simpoint weight file!') |
| |
| if (interval * interval_length - warmup_length > 0): |
| starting_inst_count = \ |
| interval * interval_length - warmup_length |
| actual_warmup_length = warmup_length |
| else: |
| # Not enough room for proper warmup |
| # Just starting from the beginning |
| starting_inst_count = 0 |
| actual_warmup_length = interval * interval_length |
| |
| simpoints.append((interval, weight, starting_inst_count, |
| actual_warmup_length)) |
| |
| # Sort SimPoints by starting inst count |
| simpoints.sort(key=lambda obj: obj[2]) |
| for s in simpoints: |
| interval, weight, starting_inst_count, actual_warmup_length = s |
| print(str(interval), str(weight), starting_inst_count, |
| actual_warmup_length) |
| simpoint_start_insts.append(starting_inst_count) |
| |
| print("Total # of simpoints:", len(simpoints)) |
| testsys.cpu[0].simpoint_start_insts = simpoint_start_insts |
| |
| return (simpoints, interval_length) |
| |
| def takeSimpointCheckpoints(simpoints, interval_length, cptdir): |
| num_checkpoints = 0 |
| index = 0 |
| last_chkpnt_inst_count = -1 |
| for simpoint in simpoints: |
| interval, weight, starting_inst_count, actual_warmup_length = simpoint |
| if starting_inst_count == last_chkpnt_inst_count: |
| # checkpoint starting point same as last time |
| # (when warmup period longer than starting point) |
| exit_cause = "simpoint starting point found" |
| code = 0 |
| else: |
| exit_event = m5.simulate() |
| |
| # skip checkpoint instructions should they exist |
| while exit_event.getCause() == "checkpoint": |
| print("Found 'checkpoint' exit event...ignoring...") |
| exit_event = m5.simulate() |
| |
| exit_cause = exit_event.getCause() |
| code = exit_event.getCode() |
| |
| if exit_cause == "simpoint starting point found": |
| m5.checkpoint(joinpath(cptdir, |
| "cpt.simpoint_%02d_inst_%d_weight_%f_interval_%d_warmup_%d" |
| % (index, starting_inst_count, weight, interval_length, |
| actual_warmup_length))) |
| print("Checkpoint #%d written. start inst:%d weight:%f" % |
| (num_checkpoints, starting_inst_count, weight)) |
| num_checkpoints += 1 |
| last_chkpnt_inst_count = starting_inst_count |
| else: |
| break |
| index += 1 |
| |
| print('Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)) |
| print("%d checkpoints taken" % num_checkpoints) |
| sys.exit(code) |
| |
| def restoreSimpointCheckpoint(): |
| exit_event = m5.simulate() |
| exit_cause = exit_event.getCause() |
| |
| if exit_cause == "simpoint starting point found": |
| print("Warmed up! Dumping and resetting stats!") |
| m5.stats.dump() |
| m5.stats.reset() |
| |
| exit_event = m5.simulate() |
| exit_cause = exit_event.getCause() |
| |
| if exit_cause == "simpoint starting point found": |
| print("Done running SimPoint!") |
| sys.exit(exit_event.getCode()) |
| |
| print('Exiting @ tick %i because %s' % (m5.curTick(), exit_cause)) |
| sys.exit(exit_event.getCode()) |
| |
| def repeatSwitch(testsys, repeat_switch_cpu_list, maxtick, switch_freq): |
| print("starting switch loop") |
| while True: |
| exit_event = m5.simulate(switch_freq) |
| exit_cause = exit_event.getCause() |
| |
| if exit_cause != "simulate() limit reached": |
| return exit_event |
| |
| m5.switchCpus(testsys, repeat_switch_cpu_list) |
| |
| tmp_cpu_list = [] |
| for old_cpu, new_cpu in repeat_switch_cpu_list: |
| tmp_cpu_list.append((new_cpu, old_cpu)) |
| repeat_switch_cpu_list = tmp_cpu_list |
| |
| if (maxtick - m5.curTick()) <= switch_freq: |
| exit_event = m5.simulate(maxtick - m5.curTick()) |
| return exit_event |
| |
| def run(options, root, testsys, cpu_class): |
| if options.checkpoint_dir: |
| cptdir = options.checkpoint_dir |
| elif m5.options.outdir: |
| cptdir = m5.options.outdir |
| else: |
| cptdir = getcwd() |
| |
| if options.fast_forward and options.checkpoint_restore != None: |
| fatal("Can't specify both --fast-forward and --checkpoint-restore") |
| |
| if options.standard_switch and not options.caches: |
| fatal("Must specify --caches when using --standard-switch") |
| |
| if options.standard_switch and options.repeat_switch: |
| fatal("Can't specify both --standard-switch and --repeat-switch") |
| |
| if options.repeat_switch and options.take_checkpoints: |
| fatal("Can't specify both --repeat-switch and --take-checkpoints") |
| |
| np = options.num_cpus |
| switch_cpus = None |
| |
| if options.prog_interval: |
| for i in xrange(np): |
| testsys.cpu[i].progress_interval = options.prog_interval |
| |
| if options.maxinsts: |
| for i in xrange(np): |
| testsys.cpu[i].max_insts_any_thread = options.maxinsts |
| |
| if cpu_class: |
| switch_cpus = [cpu_class(switched_out=True, cpu_id=(i)) |
| for i in xrange(np)] |
| |
| for i in xrange(np): |
| if options.fast_forward: |
| testsys.cpu[i].max_insts_any_thread = int(options.fast_forward) |
| switch_cpus[i].system = testsys |
| switch_cpus[i].workload = testsys.cpu[i].workload |
| switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain |
| switch_cpus[i].progress_interval = \ |
| testsys.cpu[i].progress_interval |
| switch_cpus[i].isa = testsys.cpu[i].isa |
| # simulation period |
| if options.maxinsts: |
| switch_cpus[i].max_insts_any_thread = options.maxinsts |
| # Add checker cpu if selected |
| if options.checker: |
| switch_cpus[i].addCheckerCpu() |
| |
| # If elastic tracing is enabled attach the elastic trace probe |
| # to the switch CPUs |
| if options.elastic_trace_en: |
| CpuConfig.config_etrace(cpu_class, switch_cpus, options) |
| |
| testsys.switch_cpus = switch_cpus |
| switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)] |
| |
| if options.repeat_switch: |
| switch_class = getCPUClass(options.cpu_type)[0] |
| if switch_class.require_caches() and \ |
| not options.caches: |
| print("%s: Must be used with caches" % str(switch_class)) |
| sys.exit(1) |
| if not switch_class.support_take_over(): |
| print("%s: CPU switching not supported" % str(switch_class)) |
| sys.exit(1) |
| |
| repeat_switch_cpus = [switch_class(switched_out=True, \ |
| cpu_id=(i)) for i in xrange(np)] |
| |
| for i in xrange(np): |
| repeat_switch_cpus[i].system = testsys |
| repeat_switch_cpus[i].workload = testsys.cpu[i].workload |
| repeat_switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain |
| repeat_switch_cpus[i].isa = testsys.cpu[i].isa |
| |
| if options.maxinsts: |
| repeat_switch_cpus[i].max_insts_any_thread = options.maxinsts |
| |
| if options.checker: |
| repeat_switch_cpus[i].addCheckerCpu() |
| |
| testsys.repeat_switch_cpus = repeat_switch_cpus |
| |
| if cpu_class: |
| repeat_switch_cpu_list = [(switch_cpus[i], repeat_switch_cpus[i]) |
| for i in xrange(np)] |
| else: |
| repeat_switch_cpu_list = [(testsys.cpu[i], repeat_switch_cpus[i]) |
| for i in xrange(np)] |
| |
| if options.standard_switch: |
| switch_cpus = [TimingSimpleCPU(switched_out=True, cpu_id=(i)) |
| for i in xrange(np)] |
| switch_cpus_1 = [DerivO3CPU(switched_out=True, cpu_id=(i)) |
| for i in xrange(np)] |
| |
| for i in xrange(np): |
| switch_cpus[i].system = testsys |
| switch_cpus_1[i].system = testsys |
| switch_cpus[i].workload = testsys.cpu[i].workload |
| switch_cpus_1[i].workload = testsys.cpu[i].workload |
| switch_cpus[i].clk_domain = testsys.cpu[i].clk_domain |
| switch_cpus_1[i].clk_domain = testsys.cpu[i].clk_domain |
| switch_cpus[i].isa = testsys.cpu[i].isa |
| switch_cpus_1[i].isa = testsys.cpu[i].isa |
| |
| # if restoring, make atomic cpu simulate only a few instructions |
| if options.checkpoint_restore != None: |
| testsys.cpu[i].max_insts_any_thread = 1 |
| # Fast forward to specified location if we are not restoring |
| elif options.fast_forward: |
| testsys.cpu[i].max_insts_any_thread = int(options.fast_forward) |
| # Fast forward to a simpoint (warning: time consuming) |
| elif options.simpoint: |
| if testsys.cpu[i].workload[0].simpoint == 0: |
| fatal('simpoint not found') |
| testsys.cpu[i].max_insts_any_thread = \ |
| testsys.cpu[i].workload[0].simpoint |
| # No distance specified, just switch |
| else: |
| testsys.cpu[i].max_insts_any_thread = 1 |
| |
| # warmup period |
| if options.warmup_insts: |
| switch_cpus[i].max_insts_any_thread = options.warmup_insts |
| |
| # simulation period |
| if options.maxinsts: |
| switch_cpus_1[i].max_insts_any_thread = options.maxinsts |
| |
| # attach the checker cpu if selected |
| if options.checker: |
| switch_cpus[i].addCheckerCpu() |
| switch_cpus_1[i].addCheckerCpu() |
| |
| testsys.switch_cpus = switch_cpus |
| testsys.switch_cpus_1 = switch_cpus_1 |
| switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)] |
| switch_cpu_list1 = [(switch_cpus[i], switch_cpus_1[i]) for i in xrange(np)] |
| |
| # set the checkpoint in the cpu before m5.instantiate is called |
| if options.take_checkpoints != None and \ |
| (options.simpoint or options.at_instruction): |
| offset = int(options.take_checkpoints) |
| # Set an instruction break point |
| if options.simpoint: |
| for i in xrange(np): |
| if testsys.cpu[i].workload[0].simpoint == 0: |
| fatal('no simpoint for testsys.cpu[%d].workload[0]', i) |
| checkpoint_inst = int(testsys.cpu[i].workload[0].simpoint) + offset |
| testsys.cpu[i].max_insts_any_thread = checkpoint_inst |
| # used for output below |
| options.take_checkpoints = checkpoint_inst |
| else: |
| options.take_checkpoints = offset |
| # Set all test cpus with the right number of instructions |
| # for the upcoming simulation |
| for i in xrange(np): |
| testsys.cpu[i].max_insts_any_thread = offset |
| |
| if options.take_simpoint_checkpoints != None: |
| simpoints, interval_length = parseSimpointAnalysisFile(options, testsys) |
| |
| checkpoint_dir = None |
| if options.checkpoint_restore: |
| cpt_starttick, checkpoint_dir = findCptDir(options, cptdir, testsys) |
| m5.instantiate(checkpoint_dir) |
| |
| # Initialization is complete. If we're not in control of simulation |
| # (that is, if we're a slave simulator acting as a component in another |
| # 'master' simulator) then we're done here. The other simulator will |
| # call simulate() directly. --initialize-only is used to indicate this. |
| if options.initialize_only: |
| return |
| |
| # Handle the max tick settings now that tick frequency was resolved |
| # during system instantiation |
| # NOTE: the maxtick variable here is in absolute ticks, so it must |
| # include any simulated ticks before a checkpoint |
| explicit_maxticks = 0 |
| maxtick_from_abs = m5.MaxTick |
| maxtick_from_rel = m5.MaxTick |
| maxtick_from_maxtime = m5.MaxTick |
| if options.abs_max_tick: |
| maxtick_from_abs = options.abs_max_tick |
| explicit_maxticks += 1 |
| if options.rel_max_tick: |
| maxtick_from_rel = options.rel_max_tick |
| if options.checkpoint_restore: |
| # NOTE: this may need to be updated if checkpoints ever store |
| # the ticks per simulated second |
| maxtick_from_rel += cpt_starttick |
| if options.at_instruction or options.simpoint: |
| warn("Relative max tick specified with --at-instruction or" \ |
| " --simpoint\n These options don't specify the " \ |
| "checkpoint start tick, so assuming\n you mean " \ |
| "absolute max tick") |
| explicit_maxticks += 1 |
| if options.maxtime: |
| maxtick_from_maxtime = m5.ticks.fromSeconds(options.maxtime) |
| explicit_maxticks += 1 |
| if explicit_maxticks > 1: |
| warn("Specified multiple of --abs-max-tick, --rel-max-tick, --maxtime."\ |
| " Using least") |
| maxtick = min([maxtick_from_abs, maxtick_from_rel, maxtick_from_maxtime]) |
| |
| if options.checkpoint_restore != None and maxtick < cpt_starttick: |
| fatal("Bad maxtick (%d) specified: " \ |
| "Checkpoint starts starts from tick: %d", maxtick, cpt_starttick) |
| |
| if options.standard_switch or cpu_class: |
| if options.standard_switch: |
| print("Switch at instruction count:%s" % |
| str(testsys.cpu[0].max_insts_any_thread)) |
| exit_event = m5.simulate() |
| elif cpu_class and options.fast_forward: |
| print("Switch at instruction count:%s" % |
| str(testsys.cpu[0].max_insts_any_thread)) |
| exit_event = m5.simulate() |
| else: |
| print("Switch at curTick count:%s" % str(10000)) |
| exit_event = m5.simulate(10000) |
| print("Switched CPUS @ tick %s" % (m5.curTick())) |
| |
| m5.switchCpus(testsys, switch_cpu_list) |
| |
| if options.standard_switch: |
| print("Switch at instruction count:%d" % |
| (testsys.switch_cpus[0].max_insts_any_thread)) |
| |
| #warmup instruction count may have already been set |
| if options.warmup_insts: |
| exit_event = m5.simulate() |
| else: |
| exit_event = m5.simulate(options.standard_switch) |
| print("Switching CPUS @ tick %s" % (m5.curTick())) |
| print("Simulation ends instruction count:%d" % |
| (testsys.switch_cpus_1[0].max_insts_any_thread)) |
| m5.switchCpus(testsys, switch_cpu_list1) |
| |
| # If we're taking and restoring checkpoints, use checkpoint_dir |
| # option only for finding the checkpoints to restore from. This |
| # lets us test checkpointing by restoring from one set of |
| # checkpoints, generating a second set, and then comparing them. |
| if (options.take_checkpoints or options.take_simpoint_checkpoints) \ |
| and options.checkpoint_restore: |
| |
| if m5.options.outdir: |
| cptdir = m5.options.outdir |
| else: |
| cptdir = getcwd() |
| |
| if options.take_checkpoints != None : |
| # Checkpoints being taken via the command line at <when> and at |
| # subsequent periods of <period>. Checkpoint instructions |
| # received from the benchmark running are ignored and skipped in |
| # favor of command line checkpoint instructions. |
| exit_event = scriptCheckpoints(options, maxtick, cptdir) |
| |
| # Take SimPoint checkpoints |
| elif options.take_simpoint_checkpoints != None: |
| takeSimpointCheckpoints(simpoints, interval_length, cptdir) |
| |
| # Restore from SimPoint checkpoints |
| elif options.restore_simpoint_checkpoint != None: |
| restoreSimpointCheckpoint() |
| |
| else: |
| if options.fast_forward: |
| m5.stats.reset() |
| print("**** REAL SIMULATION ****") |
| |
| # If checkpoints are being taken, then the checkpoint instruction |
| # will occur in the benchmark code it self. |
| if options.repeat_switch and maxtick > options.repeat_switch: |
| exit_event = repeatSwitch(testsys, repeat_switch_cpu_list, |
| maxtick, options.repeat_switch) |
| else: |
| exit_event = benchCheckpoints(options, maxtick, cptdir) |
| |
| print('Exiting @ tick %i because %s' % |
| (m5.curTick(), exit_event.getCause())) |
| if options.checkpoint_at_end: |
| m5.checkpoint(joinpath(cptdir, "cpt.%d")) |
| |
| if exit_event.getCode() != 0: |
| print("Simulated exit code not 0! Exit code is", exit_event.getCode()) |
