parser = optparse.OptionParser()
+# Benchmark options
parser.add_option("-c", "--cmd",
- default="../../tests/test-progs/hello/bin/alpha/linux/hello",
+ default="../tests/test-progs/hello/bin/alpha/linux/hello",
help="The binary to run in syscall emulation mode.")
parser.add_option("-o", "--options", default="",
help="The options to pass to the binary, use \" \" around the entire\
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()
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
cpu = AtomicSimpleCPU()
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.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(500000000000)
+ 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()
projects / gem5.git / blobdiff