diff options
Diffstat (limited to 'configs/example/se.py')
| -rw-r--r-- | configs/example/se.py | 168 |
1 files changed, 163 insertions, 5 deletions
diff --git a/configs/example/se.py b/configs/example/se.py index 6a941b9da..a053ff8df 100644 --- a/configs/example/se.py +++ b/configs/example/se.py @@ -37,6 +37,7 @@ m5.AddToPath('../common') parser = optparse.OptionParser() +# Benchmark options parser.add_option("-c", "--cmd", default="../../tests/test-progs/hello/bin/alpha/linux/hello", help="The binary to run in syscall emulation mode.") @@ -45,9 +46,35 @@ parser.add_option("-o", "--options", default="", string.") parser.add_option("-i", "--input", default="", help="A file of input to give to the binary.") + +# System options parser.add_option("-d", "--detailed", action="store_true") parser.add_option("-t", "--timing", action="store_true") +parser.add_option("--caches", action="store_true") + +# Run duration options parser.add_option("-m", "--maxtick", type="int") +parser.add_option("--maxtime", type="float") + +#Checkpointing options +###Note that performing checkpointing via python script files will override +###checkpoint instructions built into binaries. +parser.add_option("--take_checkpoints", action="store", type="string", + help="<M,N> will take checkpoint at cycle M and every N cycles \ + thereafter") +parser.add_option("--max_checkpoints", action="store", type="int", + help="the maximum number of checkpoints to drop", + default=5) +parser.add_option("--checkpoint_dir", action="store", type="string", + help="Place all checkpoints in this absolute directory") +parser.add_option("-r", "--checkpoint_restore", action="store", type="int", + help="restore from checkpoint <N>") + +#CPU Switching - default switch model generally goes from a checkpoint +#to a timing simple CPU with caches to warm up, then to detailed CPU for +#data measurement +parser.add_option("-s", "--standard_switch", action="store_true", + help="switch from one cpu mode to another") (options, args) = parser.parse_args() @@ -55,6 +82,13 @@ if args: print "Error: script doesn't take any positional arguments" sys.exit(1) +class MyCache(BaseCache): + assoc = 2 + block_size = 64 + latency = 1 + mshrs = 10 + tgts_per_mshr = 5 + process = LiveProcess() process.executable = options.cmd process.cmd = options.cmd + " " + options.options @@ -93,25 +127,149 @@ cpu.workload = process cpu.cpu_id = 0 system = System(cpu = cpu, - physmem = PhysicalMemory(), + physmem = PhysicalMemory(range=AddrRange("512MB")), membus = Bus()) system.physmem.port = system.membus.port system.cpu.connectMemPorts(system.membus) system.cpu.mem = system.physmem +system.cpu.clock = '2GHz' +if options.caches and not options.standard_switch: + system.cpu.addPrivateSplitL1Caches(MyCache(size = '32kB'), + MyCache(size = '64kB')) root = Root(system = system) if options.timing or options.detailed: root.system.mem_mode = 'timing' +if options.standard_switch: + switch_cpu = TimingSimpleCPU(defer_registration=True, cpu_id=1) + switch_cpu1 = DerivO3CPU(defer_registration=True, cpu_id=2) + switch_cpu.system = system + switch_cpu1.system = system + switch_cpu.clock = cpu.clock + switch_cpu1.clock = cpu.clock + if options.caches: + switch_cpu.addPrivateSplitL1Caches(MyCache(size = '32kB'), + MyCache(size = '64kB')) + + switch_cpu.workload = process + switch_cpu1.workload = process + switch_cpu.mem = system.physmem + switch_cpu1.mem = system.physmem + switch_cpu.connectMemPorts(system.membus) + root.switch_cpu = switch_cpu + root.switch_cpu1 = switch_cpu1 + switch_cpu_list = [(system.cpu, switch_cpu)] + switch_cpu_list1 = [(switch_cpu, switch_cpu1)] + # instantiate configuration m5.instantiate(root) -# simulate until program terminates +if options.checkpoint_dir: + cptdir = options.checkpoint_dir +else: + cptdir = getcwd() + +if options.checkpoint_restore: + from os.path import isdir + from os import listdir, getcwd + 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))) + + if options.checkpoint_restore > len(cpts): + m5.panic('Checkpoint %d not found' % options.checkpoint_restore) + + print "restoring checkpoint from ","/".join([cptdir, "cpt.%s" % cpts[options.checkpoint_restore - 1]]) + m5.restoreCheckpoint(root, "/".join([cptdir, "cpt.%s" % cpts[options.checkpoint_restore - 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(system) + m5.switchCpus(switch_cpu_list) + m5.resume(system) + + exit_event = m5.simulate(3000000) + m5.switchCpus(switch_cpu_list1) + if options.maxtick: - exit_event = m5.simulate(options.maxtick) + maxtick = options.maxtick +elif options.maxtime: + simtime = int(options.maxtime * root.clock.value) + print "simulating for: ", simtime + maxtick = simtime else: - exit_event = m5.simulate() + maxtick = -1 + +num_checkpoints = 0 + +exit_cause = '' + +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, cptdir + "cpt.%d") + num_checkpoints += 1 + + sim_ticks = when + exit_cause = "maximum %d checkpoints dropped" % options.max_checkpoints + while num_checkpoints < options.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(period - 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 == options.max_checkpoints: + exit_cause = "maximum %d checkpoints dropped" % options.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 -print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause() |