Python simulate.simulate函数代码示例

  def get_simulated_runtime(self, waterfall_prefix=""):
    """ Returns the simulated runtime for the job.

    This should be approximately the same as the original runtime of the job, except
    that it doesn't include scheduler delay.

    If a non-empty waterfall_prefix is passed in, makes a waterfall plot based on the simulated
    runtimes.
    """
    total_runtime = 0
    tasks_for_combined_stages = []
    all_start_finish_times = []
    for id, stage in self.stages.iteritems():
      if id in self.stages_to_combine:
        tasks_for_combined_stages.extend(stage.tasks)
      else:
        tasks = sorted(stage.tasks, key = lambda task: task.start_time)
        simulated_runtime, start_finish_times = simulate.simulate(
          [t.runtime() for t in tasks], concurrency.get_max_concurrency(tasks))
        start_finish_times_adjusted = [
          (start + total_runtime, finish + total_runtime) for start, finish in start_finish_times]
        all_start_finish_times.append(start_finish_times_adjusted)
        total_runtime += simulated_runtime
    if len(tasks_for_combined_stages) > 0:
      tasks = sorted(tasks_for_combined_stages, key = lambda task: task.start_time)
      simulated_runtime, start_finish_times = simulate.simulate(
        [task.runtime() for task in tasks], self.combined_stages_concurrency)
      start_finish_times_adjusted = [
        (start - simulated_runtime, finish - simulated_runtime) for start, finish in start_finish_times]
      all_start_finish_times.append(start_finish_times_adjusted)
      total_runtime += simulated_runtime

    if waterfall_prefix:
      self.write_simulated_waterfall(all_start_finish_times, "%s_simulated" % waterfall_prefix)
    return total_runtime 

  def median_progress_rate_speedup(self, prefix):
    """ Returns how fast the job would have run if all tasks had the median progress rate. """
    total_median_progress_rate_runtime = 0
    runtimes_for_combined_stages = []
    all_start_finish_times = []
    for id, stage in self.stages.iteritems():
      median_rate_runtimes = stage.task_runtimes_with_median_progress_rate()
      if id in self.stages_to_combine:
        runtimes_for_combined_stages.extend(median_rate_runtimes)
      else:
        no_stragglers_runtime, start_finish_times = simulate.simulate(
          median_rate_runtimes, concurrency.get_max_concurrency(stage.tasks))
        start_finish_times_adjusted = [
          (start + total_median_progress_rate_runtime, finish + total_median_progress_rate_runtime) \
          for start, finish in start_finish_times]
        total_median_progress_rate_runtime += no_stragglers_runtime
        all_start_finish_times.append(start_finish_times_adjusted)

    if len(runtimes_for_combined_stages) > 0:
      no_stragglers_runtime, start_finish_times = simulate.simulate(
        runtimes_for_combined_stages, self.combined_stages_concurrency)
      start_finish_times_adjusted = [
        (start + total_median_progress_rate_runtime, finish + total_median_progress_rate_runtime) \
        for start, finish in start_finish_times]
      total_median_progress_rate_runtime += no_stragglers_runtime
      all_start_finish_times.append(start_finish_times_adjusted)

    self.write_simulated_waterfall(all_start_finish_times, "%s_sim_median_progress_rate" % prefix)
    return total_median_progress_rate_runtime * 1.0 / self.get_simulated_runtime()

    def replace_95_stragglers_with_median_speedup(self):
        """ Returns how much faster the job would have run if there were no stragglers.

    Removes stragglers by replacing the longest 5% of tasks with the median runtime
    for tasks in the stage.
    """
        total_no_stragglers_runtime = 0
        runtimes_for_combined_stages = []
        for id, stage in self.stages.iteritems():
            runtimes = [task.runtime() for task in stage.tasks]
            runtimes.sort()
            median_runtime = get_percentile(runtimes, 0.5)
            threshold_runtime = get_percentile(runtimes, 0.95)
            no_straggler_runtimes = []
            for runtime in runtimes:
                if runtime >= threshold_runtime:
                    no_straggler_runtimes.append(median_runtime)
                else:
                    no_straggler_runtimes.append(runtime)
            if id in self.stages_to_combine:
                runtimes_for_combined_stages.extend(no_straggler_runtimes)
            else:
                no_stragglers_runtime = simulate.simulate(no_straggler_runtimes)[0]
                total_no_stragglers_runtime += no_stragglers_runtime
                original_runtime = simulate.simulate([task.runtime() for task in stage.tasks])[0]
                print "%s: Orig: %s, no stragg: %s" % (id, original_runtime, no_stragglers_runtime)
        if len(runtimes_for_combined_stages) > 0:
            total_no_stragglers_runtime += simulate.simulate(runtimes_for_combined_stages)[0]
        return total_no_stragglers_runtime * 1.0 / self.get_simulated_runtime()

  def replace_all_tasks_with_average_speedup(self, prefix):
    """ Returns how much faster the job would have run if there were no stragglers.

    Eliminates stragglers by replacing each task's runtime with the average runtime
    for tasks in the job.
    """
    self.print_heading("Computing speedup by averaging out stragglers")
    total_no_stragglers_runtime = 0
    averaged_runtimes_for_combined_stages = []
    all_start_finish_times = []
    for id, stage in self.stages.iteritems():
      averaged_runtimes = [stage.average_task_runtime()] * len(stage.tasks)
      if id in self.stages_to_combine:
        averaged_runtimes_for_combined_stages.extend(averaged_runtimes) 
      else:
        no_stragglers_runtime, start_finish_times = simulate.simulate(averaged_runtimes)
        # Adjust the start and finish times based on when the stage staged.
        start_finish_times_adjusted = [
          (start + total_no_stragglers_runtime, finish + total_no_stragglers_runtime) \
          for start, finish in start_finish_times]
        total_no_stragglers_runtime += no_stragglers_runtime
        all_start_finish_times.append(start_finish_times_adjusted)
    if len(averaged_runtimes_for_combined_stages) > 0:
      no_stragglers_runtime, start_finish_times = simulate.simulate(
        averaged_runtimes_for_combined_stages)
      # Adjust the start and finish times based on when the stage staged.
      # The subtraction is a hack to put the combined stages at the beginning, which
      # is when they usually occur.
      start_finish_times_adjusted = [
        (start - no_stragglers_runtime, finish - no_stragglers_runtime) for start, finish in start_finish_times]
      total_no_stragglers_runtime += no_stragglers_runtime
      all_start_finish_times.append(start_finish_times_adjusted)

    self.write_simulated_waterfall(all_start_finish_times, "%s_sim_no_stragglers" % prefix)
    return total_no_stragglers_runtime * 1.0 / self.get_simulated_runtime()

  def replace_stragglers_with_median_speedup(self, threshold_fn):
    """ Returns how much faster the job would have run if there were no stragglers.

    For each stage, passes the list of task runtimes into threshold_fn, which should
    return a threshold runtime. Then, replaces all task runtimes greater than the given
    threshold with the median runtime.

    For example, to replace the tasks with the longest 5% of runtimes with the median:
      self.replace_stragglers_with_median_speedup(lambda runtimes: numpy.percentile(runtimes, 95)
    """
    self.print_heading("Computing speedup from replacing straggler tasks with median")
    total_no_stragglers_runtime = 0
    start_and_runtimes_for_combined_stages = []
    original_start_and_runtimes_for_combined_stages = []
    num_stragglers_combined_stages = 0
    for id, stage in self.stages.iteritems():
      runtimes = [task.runtime() for task in stage.tasks]
      median_runtime = numpy.percentile(runtimes, 50)
      threshold_runtime = threshold_fn(runtimes)
      no_straggler_start_and_runtimes = []
      num_stragglers = 0
      sorted_stage_tasks = sorted(stage.tasks, key = lambda t: t.runtime())
      for task in sorted_stage_tasks:
        if task.runtime() >= threshold_runtime:
          assert(median_runtime <= task.runtime())
          no_straggler_start_and_runtimes.append((task.start_time, median_runtime))
          num_stragglers += 1 
        else:
          no_straggler_start_and_runtimes.append((task.start_time, task.runtime()))
      if id in self.stages_to_combine:
        start_and_runtimes_for_combined_stages.extend(no_straggler_start_and_runtimes)
        original_start_and_runtimes_for_combined_stages.extend(
          [(t.start_time, t.runtime()) for t in stage.tasks])
        num_stragglers_combined_stages += num_stragglers
      else:
        max_concurrency = concurrency.get_max_concurrency(stage.tasks)
        no_stragglers_runtime = simulate.simulate(
          [x[1] for x in no_straggler_start_and_runtimes], max_concurrency)[0]
        total_no_stragglers_runtime += no_stragglers_runtime
        original_runtime = simulate.simulate(
          [task.runtime() for task in sorted_stage_tasks], max_concurrency)[0]
        print ("%s: Original: %s, Orig (sim): %s, no stragg: %s (%s stragglers)" %
          (id, stage.finish_time() - stage.start_time, original_runtime, no_stragglers_runtime,
           num_stragglers))
    if len(start_and_runtimes_for_combined_stages) > 0:
      original_start_time = min([x[0] for x in start_and_runtimes_for_combined_stages])
      original_finish_time = max([x[0] + x[1] for x in start_and_runtimes_for_combined_stages])
      start_and_runtimes_for_combined_stages.sort()
      runtimes_for_combined_stages = [x[1] for x in start_and_runtimes_for_combined_stages]
      new_runtime = simulate.simulate(
        runtimes_for_combined_stages, self.combined_stages_concurrency)[0]
      original_runtime = simulate.simulate(
        [x[1] for x in sorted(original_start_and_runtimes_for_combined_stages)],
        self.combined_stages_concurrency)[0]
      print ("Combined: Original: %s, Orig (sim): %s, no stragg: %s (%s stragglers)" %
        (original_finish_time - original_start_time, original_runtime, new_runtime,
         num_stragglers_combined_stages))
      total_no_stragglers_runtime += new_runtime
    return total_no_stragglers_runtime * 1.0 / self.get_simulated_runtime()

 def median_progress_rate_speedup(self):
     """ Returns how fast the job would have run if all tasks had the median progress rate. """
     total_median_progress_rate_runtime = 0
     runtimes_for_combined_stages = []
     for id, stage in self.stages.iteritems():
         median_rate_runtimes = stage.task_runtimes_with_median_progress_rate()
         if id in self.stages_to_combine:
             runtimes_for_combined_stages.extend(median_rate_runtimes)
         else:
             total_median_progress_rate_runtime += simulate.simulate(median_rate_runtimes)[0]
     if len(runtimes_for_combined_stages) > 0:
         total_median_progress_rate_runtime += simulate.simulate(runtimes_for_combined_stages)[0]
     return total_median_progress_rate_runtime * 1.0 / self.get_simulated_runtime()

        def add_tasks_to_totals(unsorted_tasks):
            # Sort the tasks by the start time, not the finish time -- otherwise the longest tasks
            # end up getting run last, which can artificially inflate job completion time.
            tasks = sorted(unsorted_tasks, key=lambda task: task.start_time)

            # Get the runtime for the stage
            task_runtimes = [compute_base_runtime(task) for task in tasks]
            base_runtime = simulate.simulate(task_runtimes)[0]
            total_time[0] += base_runtime

            faster_runtimes = [compute_faster_runtime(task) for task in tasks]
            faster_runtime = simulate.simulate(faster_runtimes)[0]
            total_faster_time[0] += faster_runtime
            print "Base: %s, faster: %s" % (base_runtime, faster_runtime)

 def test_overshoot(self):
     '''Test if the overshoot is less than 1.0e-2.
     '''
     T, X = simulate.simulate(t0=0.0, t1=2.0, dt=1.0e-2)
     # Make sure that X is damped below 1.0e-3 at the last iteration.
     self.assertLess(max(X), 1.0e-2)
     return

    def replace_stragglers_with_median_speedup(self):
        """ Returns how much faster the job would have run if there were no stragglers.

    Removes stragglers by replacing all task runtimes with the median runtime for tasks in the
    stage.
    """
        total_no_stragglers_runtime = 0
        runtimes_for_combined_stages = []
        for id, stage in self.stages.iteritems():
            runtimes = [task.runtime() for task in stage.tasks]
            median_runtime = numpy.median(runtimes)
            no_straggler_runtimes = [numpy.median(runtimes)] * len(stage.tasks)
            if id in self.stages_to_combine:
                runtimes_for_combined_stages.extend(no_straggler_runtimes)
            else:
                total_no_stragglers_runtime += simulate.simulate(no_straggler_runtimes)[0]
        if len(runtimes_for_combined_stages) > 0:
            total_no_stragglers_runtime += simulate.simulate(runtimes_for_combined_stages)[0]
        return total_no_stragglers_runtime * 1.0 / self.get_simulated_runtime()

 def runTest(self):
     """ Test if simulation algorithm works correctly """
            
     results, _ = readFromFile('inputs/testSimulation.dat')
     
     seed(1)
     events, stats = simulate(results, False, True)
     
     for i, event in enumerate(events):
         self.failUnless(event == testEvents[i], 'Simulation do not match: %s' % event)
     
     for i, stat in enumerate(stats):
         self.failUnless(stat == testStats[i], 'Statistics do not match: %s' % stat)

def process():
    parser = ArgumentParser(
        description="Simulate the flocking behaviour of a number of birds. When no configuration file is given the simulation will run with default parameters and an example configuration file (containing the default parameters) will be saved in the current directory.")
    parser.add_argument("--file", "-f",
                        help="The configuration file, in yaml format")

    arguments = parser.parse_args()

    if arguments.file:
        params = yaml.load(open(arguments.file))
    else:
        params = yaml.load(
            open(
                os.path.join(
                    os.path.dirname(__file__),
                    'params.yaml')))
        with open('example_config.yaml', "w") as f:
            f.write(yaml.dump(params))

    flock_params = params["flock_params"]
    boid_params = params["boid_params"]
    anim_params = params["anim_params"]
    flock = Flock(flock_params, boid_params)
    simulate(anim_params, flock)

def attempt(memory, input_string, ht):
	collisions = 0
	output = simulate.simulate(memory, str(input_string))
	
	#We've seen this output before
	if output in ht:
		#We have NOT seen this input string before
		if input_string not in ht[output]:
		#We have a collision
			ht[output][input_string] = True
			collisions += 1

	#Haven't seen the output before. Just set up the dictionary.
	else:
		ht[output] = {}
	
	return collisions

def run_simulation(symbol):
    query_params = request.args
    print query_params.get('startdate')
    print query_params.get('enddate')
    trim_start = query_params.get('startdate') or '2015-11-01'
    trim_end = query_params.get('enddate') or '2016-11-01'
    prices = get_prices([symbol], trim_start=trim_start, trim_end=trim_end)
    prices = prices[symbol]
    signal_crosses, simulation, earnings = simulate(prices)
    dailies = prices
    for timestamp in dailies.keys():
        dailies[timestamp] = {
            'price': prices[timestamp],
            'signal': signal_crosses[timestamp],
            'shares': simulation[timestamp]['shares'],
            'cash_on_hand': simulation[timestamp]['cash_on_hand']
        }
    dailies = SortedDict(dailies)
    return json.dumps({'earnings': earnings, 'dailies': dailies})

    def get_badness(self, p, method, debug):
        # this is the value that will accumulate the deviation from the measurements
        badness_total = 0.0
        badnesses = []
        # for all 48x4 possible setups
        for typeid in range(self.strain_count):
            badness = 0.0
            # only simulate the cloneable arrangements
            if self.valids[typeid] == True:
                for iptgatc in range(4):
                    # get the parameters for the simulation via teh ruleset
                    params = self.apply_ruleset(p, typeid, iptgatc)
                    # get the simualted yfp levels
                    yfps = np.array(simulate(params))
                    # get the actual measurements for comparison
                    measurements = self.data[typeid][iptgatc]
                    # comute the quadratic difference and add it to the badness
                    #print(yfps)
                    #print(measurements)
                    if method == 0:
                        badness += np.sum((yfps-measurements)**2)
                    elif method == 1:
                        yfps = np.maximum(yfps, np.add(np.zeros(4), 0.000001))
                        badness += np.sum(np.abs(np.log10(yfps) - np.log10(measurements)))
                    elif method == 2:
                        badness += np.sum(abs(yfps-measurements))
                    elif method == 3:
                        yfps = np.maximum(yfps, np.add(np.zeros(4), 0.000001))
                        badness += np.sum(np.exp(np.abs(np.log10(yfps) - np.log10(measurements))))
            badness_total += badness
            if debug >= 2:
                print("%s: %f" % (self.types[typeid], badness))
                if debug >= 3:
                    badnesses.append(badness)

        if debug >= 3:
            return badness_total, badnesses
        return badness_total

import random


shiftrange = range(1, 20)
ws = access.wsmake(mem=range(10000), rand=random, size=5)

alist = []
for i in range(500000):
    alist.append(access.access(range(10000), ws, random, 0.95))
    if not i % 10:
        access.wsmove(range(10000), ws, random)
    if not i % 1000:
        print "alist: " + str(i)
        
ratios = []
for i in shiftrange:
    mms = algorithms.Aging(6, bits=4, shift=i)    # Instantiate.
    ratios.append((i, simulate.simulate(mms, alist)))
    print "Shifting frequency: " + str(i)

g = Gnuplot.Gnuplot()
g('set data style points')
g('set yrange[0:]')
g('set terminal epslatex monochrome')
g('set output "diagram2.eps"')
g('set xlabel "shifting frequency in read-instructions per shift"')
g('set ylabel "ratio of page faults to accesses"')
g.plot(Gnuplot.Data(ratios, inline=1))

print "\nNow move diagram2.* to ../"