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Diffstat (limited to 'configs/common/Simulation.py')
| -rw-r--r-- | configs/common/Simulation.py | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/configs/common/Simulation.py b/configs/common/Simulation.py new file mode 100644 index 000000000..b927315ba --- /dev/null +++ b/configs/common/Simulation.py @@ -0,0 +1,175 @@ +# Copyright (c) 2006 The Regents of The University of Michigan +# 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 os import getcwd +import m5 +from m5.objects import * +m5.AddToPath('../common') +from Caches import * + +def run(options, root, testsys): + if options.maxtick: + maxtick = options.maxtick + elif options.maxtime: + simtime = int(options.maxtime * root.clock.value) + print "simulating for: ", simtime + maxtick = simtime + else: + maxtick = -1 + + if options.checkpoint_dir: + cptdir = options.checkpoint_dir + else: + cptdir = getcwd() + + np = options.num_cpus + max_checkpoints = options.max_checkpoints + + if options.standard_switch: + switch_cpus = [TimingSimpleCPU(defer_registration=True, cpu_id=(np+i)) + for i in xrange(np)] + switch_cpus1 = [DerivO3CPU(defer_registration=True, cpu_id=(2*np+i)) + for i in xrange(np)] + for i in xrange(np): + switch_cpus[i].system = testsys + switch_cpus1[i].system = testsys + if not m5.build_env['FULL_SYSTEM']: + switch_cpus[i].workload = testsys.cpu[i].workload + switch_cpus1[i].workload = testsys.cpu[i].workload + switch_cpus[i].clock = testsys.cpu[0].clock + switch_cpus1[i].clock = testsys.cpu[0].clock + if options.caches: + switch_cpus[i].addPrivateSplitL1Caches(L1Cache(size = '32kB'), + L1Cache(size = '64kB')) + + switch_cpus[i].mem = testsys.physmem + switch_cpus1[i].mem = testsys.physmem + switch_cpus[i].connectMemPorts(testsys.membus) + root.switch_cpus = switch_cpus + root.switch_cpus1 = switch_cpus1 + switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)] + switch_cpu_list1 = [(switch_cpus[i], switch_cpus1[i]) for i in xrange(np)] + + m5.instantiate(root) + + if options.checkpoint_restore: + from os.path import isdir + from os import listdir + import re + + if not isdir(cptdir): + m5.panic("checkpoint dir %s does not exist!" % cptdir) + + 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): + m5.panic('Checkpoint %d not found' % cpt_num) + + m5.restoreCheckpoint(root, + "/".join([cptdir, "cpt.%s" % cpts[cpt_num - 1]])) + + if options.standard_switch: + exit_event = m5.simulate(10000) + + ## when you change to Timing (or Atomic), you halt the system given + ## as argument. When you are finished with the system changes + ## (including switchCpus), you must resume the system manually. + ## You DON'T need to resume after just switching CPUs if you haven't + ## changed anything on the system level. + + m5.changeToTiming(testsys) + m5.switchCpus(switch_cpu_list) + m5.resume(testsys) + + exit_event = m5.simulate(3000000) + m5.switchCpus(switch_cpu_list1) + + num_checkpoints = 0 + exit_cause = '' + + if options.take_checkpoints: + [when, period] = options.take_checkpoints.split(",", 1) + when = int(when) + period = int(period) + + print "when is ", when, " period is ", period + exit_event = m5.simulate(when) + while exit_event.getCause() == "checkpoint": + exit_event = m5.simulate(when - m5.curTick()) + + if exit_event.getCause() == "simulate() limit reached": + m5.checkpoint(root, cptdir + "cpt.%d") + num_checkpoints += 1 + + sim_ticks = when + exit_cause = "maximum %d checkpoints dropped" % max_checkpoints + while num_checkpoints < max_checkpoints: + if (sim_ticks + period) > maxtick and maxtick != -1: + exit_event = m5.simulate(maxtick - sim_ticks) + exit_cause = exit_event.getCause() + break + else: + exit_event = m5.simulate(period) + 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(root, cptdir + "cpt.%d") + num_checkpoints += 1 + + else: #no checkpoints being taken via this script + exit_event = m5.simulate(maxtick) + + while exit_event.getCause() == "checkpoint": + m5.checkpoint(root, cptdir + "cpt.%d") + num_checkpoints += 1 + if num_checkpoints == max_checkpoints: + exit_cause = "maximum %d checkpoints dropped" % max_checkpoints + break + + if maxtick == -1: + exit_event = m5.simulate(maxtick) + else: + exit_event = m5.simulate(maxtick - m5.curTick()) + + exit_cause = exit_event.getCause() + + if exit_cause == '': + exit_cause = exit_event.getCause() + print 'Exiting @ cycle', m5.curTick(), 'because ', exit_cause + |