-# Copyright (c) 2006 The Regents of The University of Michigan
+# Copyright (c) 2006-2008 The Regents of The University of Michigan
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
atomic = False
if options.timing:
- TmpClass = TimingSimpleCPU
+ class TmpClass(TimingSimpleCPU): pass
elif options.detailed:
- TmpClass = DerivO3CPU
+ if not options.caches:
+ print "O3 CPU must be used with caches"
+ sys.exit(1)
+ class TmpClass(DerivO3CPU): pass
else:
- TmpClass = AtomicSimpleCPU
+ class TmpClass(AtomicSimpleCPU): pass
atomic = True
CPUClass = None
test_mem_mode = 'atomic'
if not atomic:
- if options.checkpoint_restore:
+ if options.checkpoint_restore != None or options.fast_forward:
CPUClass = TmpClass
- TmpClass = AtomicSimpleCPU
+ class TmpClass(AtomicSimpleCPU): pass
else:
test_mem_mode = 'timing'
if options.maxtick:
maxtick = options.maxtick
elif options.maxtime:
- simtime = int(options.maxtime * root.clock.value)
+ simtime = m5.ticks.seconds(simtime)
print "simulating for: ", simtime
maxtick = simtime
else:
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:
+ m5.panic("Error: Can't specify both --fast-forward and --checkpoint-restore")
+
+ if options.standard_switch and not options.caches:
+ m5.panic("Error: Must specify --caches when using --standard-switch")
+
np = options.num_cpus
max_checkpoints = options.max_checkpoints
switch_cpus = None
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
if not m5.build_env['FULL_SYSTEM']:
switch_cpus[i].workload = testsys.cpu[i].workload
switch_cpus[i].clock = testsys.cpu[0].clock
+ # simulation period
+ if options.max_inst:
+ switch_cpus[i].max_insts_any_thread = options.max_inst
- root.switch_cpus = switch_cpus
+ testsys.switch_cpus = switch_cpus
switch_cpu_list = [(testsys.cpu[i], switch_cpus[i]) for i in xrange(np)]
if options.standard_switch:
switch_cpus[i].clock = testsys.cpu[0].clock
switch_cpus_1[i].clock = testsys.cpu[0].clock
+ # 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 == None:
+ m5.panic('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.max_inst:
+ switch_cpus_1[i].max_insts_any_thread = options.max_inst
+
if not options.caches:
# O3 CPU must have a cache to work.
switch_cpus_1[i].addPrivateSplitL1Caches(L1Cache(size = '32kB'),
L1Cache(size = '64kB'))
switch_cpus_1[i].connectMemPorts(testsys.membus)
-
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 == None:
+ m5.panic('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
+
m5.instantiate(root)
- if options.checkpoint_restore:
- from os.path import isdir
+ if options.checkpoint_restore != None:
+ from os.path import isdir, exists
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))
+ if options.at_instruction:
+ checkpoint_dir = joinpath(cptdir, "cpt.%s.%s" % \
+ (options.bench, options.checkpoint_restore))
+ if not exists(checkpoint_dir):
+ m5.panic("Unable to find checkpoint directory %s" % \
+ checkpoint_dir)
+
+ print "Restoring checkpoint ..."
+ m5.restoreCheckpoint(root, checkpoint_dir)
+ print "Done."
+ elif options.simpoint:
+ # assume workload 0 has the simpoint
+ if testsys.cpu[0].workload[0].simpoint == None:
+ m5.panic('Unable to find simpoint')
+
+ options.checkpoint_restore += \
+ int(testsys.cpu[0].workload[0].simpoint)
+
+ checkpoint_dir = joinpath(cptdir, "cpt.%s.%d" % \
+ (options.bench, options.checkpoint_restore))
+ if not exists(checkpoint_dir):
+ m5.panic("Unable to find checkpoint directory %s.%s" % \
+ (options.bench, options.checkpoint_restore))
+
+ print "Restoring checkpoint ..."
+ m5.restoreCheckpoint(root,checkpoint_dir)
+ print "Done."
+ 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)))
- cpts.sort(lambda a,b: cmp(long(a), long(b)))
+ cpt_num = options.checkpoint_restore
- cpt_num = options.checkpoint_restore
+ if cpt_num > len(cpts):
+ m5.panic('Checkpoint %d not found' % cpt_num)
- if cpt_num > len(cpts):
- m5.panic('Checkpoint %d not found' % cpt_num)
+ ## Adjust max tick based on our starting tick
+ maxtick = maxtick - int(cpts[cpt_num - 1])
- m5.restoreCheckpoint(root,
- joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1]))
+ ## Restore the checkpoint
+ m5.restoreCheckpoint(root,
+ joinpath(cptdir, "cpt.%s" % cpts[cpt_num - 1]))
if options.standard_switch or cpu_class:
- exit_event = m5.simulate(10000)
+ 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 @ cycle = %s" % (m5.curTick())
- ## 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.
+ # 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)
if options.standard_switch:
- exit_event = m5.simulate(options.warmup)
+ 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.warmup)
+ print "Switching CPUS @ cycle = %s" % (m5.curTick())
+ print "Simulation ends instruction count:%d" % \
+ (testsys.switch_cpus_1[0].max_insts_any_thread)
+ m5.drain(testsys)
m5.switchCpus(switch_cpu_list1)
+ m5.resume(testsys)
num_checkpoints = 0
exit_cause = ''
- ## 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.
- if options.take_checkpoints:
- [when, period] = options.take_checkpoints.split(",", 1)
- when = int(when)
- period = int(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, joinpath(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:
- 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, joinpath(cptdir, "cpt.%d"))
- num_checkpoints += 1
-
- else: #no checkpoints being taken via this script
+ # 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.
+ if options.take_checkpoints != None :
+ 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()
+ print "exit cause = %s" % (exit_event.getCause())
+
+ # skip checkpoint instructions should they exist
+ while exit_event.getCause() == "checkpoint":
+ exit_event = m5.simulate()
+
+ if exit_event.getCause() == \
+ "a thread reached the max instruction count":
+ m5.checkpoint(root, joinpath(cptdir, "cpt.%s.%d" % \
+ (options.bench, checkpoint_inst)))
+ print "Checkpoint written."
+ num_checkpoints += 1
+
+ if exit_event.getCause() == "user interrupt received":
+ exit_cause = exit_event.getCause();
+ else:
+ when, period = options.take_checkpoints.split(",", 1)
+ when = int(when)
+ period = int(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, joinpath(cptdir, "cpt.%d"))
+ num_checkpoints += 1
+
+ sim_ticks = when
+ exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
+ while num_checkpoints < max_checkpoints and \
+ exit_event.getCause() == "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)
+ 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, joinpath(cptdir, "cpt.%d"))
+ num_checkpoints += 1
+
+ if exit_event.getCause() != "simulate() limit reached":
+ exit_cause = exit_event.getCause();
+
+ else: # no checkpoints being taken via this script
+ if options.fast_forward:
+ m5.stats.reset()
+ print "**** REAL SIMULATION ****"
exit_event = m5.simulate(maxtick)
while exit_event.getCause() == "checkpoint":
m5.checkpoint(root, joinpath(cptdir, "cpt.%d"))
num_checkpoints += 1
if num_checkpoints == max_checkpoints:
- exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
+ exit_cause = "maximum %d checkpoints dropped" % max_checkpoints
break
exit_event = m5.simulate(maxtick - m5.curTick())
projects / gem5.git / blobdiff