class Visualizer(object):
def __init__(self, game, network, train_directory):
self.game = game
env_name = '%sNoFrameskip-v4' % game
env = gym.make(env_name)
# env = gym.wrappers.Monitor(env, '/tmp/temp_%s' % game, mode='evaluation', force=True)
vb_file = os.path.join(train_directory, "vb.npy")
vb = np.load(vb_file)
parameters_file = 'parameters_81'
self.policy = Policy(env, network, "relu")
parameters_path = os.path.join(train_directory, parameters_file)
print('Using parameters file %s \n' % parameters_path)
with open(parameters_path, 'rb') as f:
parameters = pickle.load(f)['parameters']
self.policy.set_parameters(parameters)
self.policy.set_vb(vb)
def play_game(self):
rews = [0]*100
for i in range(100):
rew,step = self.policy.rollout()
rews[i] = rew
print(np.mean(rews))
print(np.max(rews))
print(rews)
class Visualizer(object):
def __init__(self, game, network, train_directory):
self.game = game
env_name = '%sNoFrameskip-v4' % game
env = gym.make(env_name)
env = gym.wrappers.Monitor(env,
'/tmp/temp_%s' % game,
mode='evaluation',
force=True)
vb_file = os.path.join(train_directory, "vb.npy")
vb = np.load(vb_file)
parameters_file = sorted(os.listdir(train_directory))[-3]
self.policy = Policy(env, network, "elu")
parameters_path = os.path.join(train_directory, parameters_file)
print('Using parameters file %s \n' % parameters_path)
with open(parameters_path, 'rb') as f:
parameters = pickle.load(f)['params']
self.policy.set_parameters(parameters)
self.policy.set_vb(vb)
def play_game(self):
print(self.policy.rollout(render=True))
def main(ep_per_cpu, game, configuration_file, run_name):
start_time = time.time()
with open(configuration_file, 'r') as f:
configuration = json.loads(f.read())
env_name = '%sNoFrameskip-v4' % game
# MPI stuff
comm = MPI.COMM_WORLD
rank = comm.Get_rank()
cpus = comm.Get_size()
# One cpu (rank 0) will evaluate results
train_cpus = cpus - 1
k = 10
epoch = 5
m = 1
# Deduce population size
lam = train_cpus * ep_per_cpu
# Create environment
env = gym.make(env_name)
# Create policy (Deep Neural Network)
# Internally it applies preprocessing to the environment state
policy = Policy(env,
network=configuration['network'],
nonlin_name=configuration['nonlin_name'])
# Create reference batch used for normalization
# It will be overwritten with vb from worker with rank 0
vb = policy.get_vb()
# Extract vector with current parameters.
#parameter have length of 1693380
parameters = policy.get_parameters()
shape = policy.parameter_shapes
# Send parameters from worker 0 to all workers (MPI stuff)
# to ensure that every worker starts in the same position
#comm.Bcast([parameters, MPI.FLOAT], root=0)
comm.Bcast([vb, MPI.FLOAT], root=0)
# Create optimizer with user defined settings (hyperparameters)
OptimizerClass = optimizer_dict[configuration['optimizer']]
optimizer = OptimizerClass(train_cpus, parameters, shape, lam, rank,
configuration["settings"], epoch, m)
# Set the same virtual batch for each worker
if rank != 0:
policy.set_vb(vb)
rews = [0]
e_r = 0
p = optimizer.get_parameters()
policy.set_parameters(p)
for j in range(k):
e_rew, e_len = policy.rollout()
e_r += e_rew
rews[0] = e_r / k
optimizer.rew = e_r / k
msg = np.array(rews)
pp = p
# Only rank 0 worker will log information from the training
logger = Logger(
optimizer.log_path(game, configuration['network'], run_name))
if rank == 0:
# Initialize logger, save virtual batch and save some basic stuff at the beginning
logger.save_vb(vb)
logger.log('Game'.ljust(25) + '%s' % game)
logger.log('Network'.ljust(25) + '%s' % configuration['network'])
logger.log('Optimizer'.ljust(25) + '%s' % configuration['optimizer'])
logger.log('Number of CPUs'.ljust(25) + '%d' % cpus)
logger.log('Population'.ljust(25) + '%d' % lam)
logger.log('Dimensionality'.ljust(25) + '%d' % len(parameters))
# Log basic info from the optimizer
# optimizer.log_basic(logger)
msg = np.zeros(1)
pp = np.zeros(optimizer.n)
results = np.empty((cpus, 1))
ppp = np.empty((cpus, optimizer.n))
comm.Allgather([msg, MPI.FLOAT], [results, MPI.FLOAT])
comm.Allgather([pp, MPI.FLOAT], [ppp, MPI.FLOAT])
results = results[1:, :]
ppp = ppp[1:, :].flatten()
rews = results[:, :1].flatten()
BestScore = max(rews)
Bestid = np.argmax(rews)
BestFound = ppp[Bestid * optimizer.n:(Bestid + 1) * optimizer.n]
if rank == 0:
logger.log('Best'.ljust(25) + '%f' % BestScore)
# We will count number of steps
# frames = 4 * steps
steps_passed = 0
iteration = 1
while steps_passed <= 25000000:
# Iteration start time
iter_start_time = time.time()
if iteration % epoch == 1:
optimizer.sigupdatelist = np.zeros(optimizer.n)
llambda = np.random.normal(1, 0.1 - 0.1 * steps_passed / 25000000)
# Workers that run train episodes
optimizer.RandomGrouping()
for ii in range(m):
optimizer.groupnum = ii
if rank != 0:
# Empty arrays for each episode. We save: length, reward, noise index
lens1 = [0]
rews1 = [0]
orew = [0]
# sig1 = [0]
# For each episode in this CPU we get new parameters,
# update policy network and perform policy rollout
e_r = 0
e_l = 0
p = optimizer.get_parameters1()
policy.set_parameters(p)
for j in range(k):
e_rew, e_len = policy.rollout()
e_r += e_rew
e_l += e_len
lens1[0] = e_l
rews1[0] = e_r / k
optimizer.rew1 = e_r / k
orew[0] = optimizer.rew
if iteration % epoch == 1:
sig1 = optimizer.sigmalist
# Aggregate information, will later send it to each worker using MPI
msg1 = np.array(rews1 + lens1 + orew, dtype=np.float64)
pp1 = optimizer.parameters1
if iteration % epoch == 1:
sigmsg1 = sig1
# Worker rank 0 that runs evaluation episodes
else:
# Empty array, evaluation results are not used for the update
msg1 = np.zeros(3, dtype=np.float64)
pp1 = optimizer.parameters
if iteration % epoch == 1:
sigmsg1 = np.zeros(optimizer.n)
# MPI stuff
# Initialize array which will be updated with information from all workers using MPI
results1 = np.empty((cpus, 3), dtype=np.float64)
ppp1 = np.empty((cpus, optimizer.n))
if iteration % epoch == 1:
sigmsgs1 = np.empty((cpus, optimizer.n))
comm.Allgather([msg1, MPI.FLOAT], [results1, MPI.FLOAT])
comm.Allgather([pp1, MPI.FLOAT], [ppp1, MPI.FLOAT])
if iteration % epoch == 1:
comm.Allgather([sigmsg1, MPI.FLOAT], [sigmsgs1, MPI.FLOAT])
ppp1 = ppp1[1:, :].flatten()
if iteration % epoch == 1:
sigmsgs1 = sigmsgs1[1:, :].flatten()
# Skip empty evaluation results from worker with id 0
results1 = results1[1:, :]
# Extract IDs and rewards
rews1 = results1[:, :1].flatten()
lens1 = results1[:, 1:2].flatten()
oreward = results1[:, 2:].flatten()
newBestidx = np.argmax(rews1)
if np.max(rews1) > BestScore:
BestScore = rews1[newBestidx]
BestFound = ppp1[newBestidx * optimizer.n:(newBestidx + 1) *
optimizer.n]
#uodate parameters, sigmas, rews
if rank != 0:
optimizer.update(ppp, BestScore, sigmsgs1, llambda)
# Steps passed = Sum of episode steps from all offsprings
steps = np.sum(lens1)
steps_passed += steps
# Write some logs for this iteration
# Using logs we are able to recover solution saved
# after 1 hour of training or after 1 billion frames
if rank == 0:
eval_mean_rew = np.mean(oreward)
eval_mean_rew1 = np.mean(rews1)
iteration_time = (time.time() - iter_start_time)
time_elapsed = (time.time() - start_time) / 60
logger.log('------------------------------------')
logger.log('Iteration'.ljust(25) + '%f' % iteration)
logger.log('EvalMeanReward'.ljust(25) + '%f' % eval_mean_rew)
logger.log('EvalMeanReward1'.ljust(25) + '%f' % eval_mean_rew1)
logger.log('StepsThisIter'.ljust(25) + '%f' % steps)
logger.log('StepsSinceStart'.ljust(25) + '%f' % steps_passed)
logger.log('IterationTime'.ljust(25) + '%f' % iteration_time)
logger.log('TimeSinceStart'.ljust(25) + '%f' % time_elapsed)
logger.log('Best'.ljust(25) + '%f' % BestScore)
# Give optimizer a chance to log its own stuff
# optimizer.log(logger)
logger.log('------------------------------------')
if iteration % 20 == 1:
fin_rews = 0
p = BestFound
policy.set_parameters(p)
for i in range(30):
e_rew, e_len = policy.rollout()
fin_rews += e_rew
fin_eval = fin_rews / 30
else:
fin_eval = 0
# Write stuff for training curve plot
stat_string = "{},\t{},\t{},\t{}\n".\
format(steps_passed, (time.time()-start_time),
eval_mean_rew1, fin_eval)
logger.write_general_stat(stat_string)
logger.write_optimizer_stat(optimizer.stat_string())
# Save currently proposed solution every 20 iterations
if iteration % 20 == 1:
logger.save_parameters(BestFound, iteration)
else:
if iteration % epoch == 0:
optimizer.updatesigma()
iteration += 1
#test best
if rank == 0:
final_rews = []
p = BestFound
policy.set_parameters(p)
for i in range(200):
e_rew, e_len = policy.rollout()
final_rews.append(e_rew)
final_eval = np.mean(final_rews)
logger.log('Final'.ljust(25) + '%f' % final_eval)
logger.save_parameters(BestFound, iteration)
def main(ep_per_cpu, game, configuration_file, run_name):
start_time = time.time()
with open(configuration_file, 'r') as f:
configuration = json.loads(f.read())
env_name = '%sNoFrameskip-v4' % game
# MPI stuff
comm = MPI.COMM_WORLD
rank = comm.Get_rank()
cpus = comm.Get_size()
# One cpu (rank 0) will evaluate results
train_cpus = cpus - 1
# Deduce population size
lam = train_cpus * ep_per_cpu
# Create environment
env = gym.make(env_name)
# Create policy (Deep Neural Network)
# Internally it applies preprocessing to the environment state
policy = Policy(env,
network=configuration['network'],
nonlin_name=configuration['nonlin_name'])
# Create reference batch used for normalization
# It will be overwritten with vb from worker with rank 0
vb = policy.get_vb()
# Extract vector with current parameters.
parameters = policy.get_parameters()
# Send parameters from worker 0 to all workers (MPI stuff)
# to ensure that every worker starts in the same position
comm.Bcast([parameters, MPI.FLOAT], root=0)
comm.Bcast([vb, MPI.FLOAT], root=0)
# Set the same virtual batch for each worker
if rank != 0:
policy.set_vb(vb)
# Create optimizer with user defined settings (hyperparameters)
OptimizerClass = optimizer_dict[configuration['optimizer']]
optimizer = OptimizerClass(parameters, lam, rank,
configuration["settings"])
# Only rank 0 worker will log information from the training
logger = None
if rank == 0:
# Initialize logger, save virtual batch and save some basic stuff at the beginning
logger = Logger(
optimizer.log_path(game, configuration['network'], run_name))
logger.save_vb(vb)
# Log basic stuff
logger.log('Game'.ljust(25) + '%s' % game)
logger.log('Network'.ljust(25) + '%s' % configuration['network'])
logger.log('Optimizer'.ljust(25) + '%s' % configuration['optimizer'])
logger.log('Number of CPUs'.ljust(25) + '%d' % cpus)
logger.log('Population'.ljust(25) + '%d' % lam)
logger.log('Dimensionality'.ljust(25) + '%d' % len(parameters))
# Log basic info from the optimizer
optimizer.log_basic(logger)
# We will count number of steps
# frames = 4 * steps (3 * steps for SpaceInvaders)
steps_passed = 0
while steps_passed <= 25000000:
# Iteration start time
iter_start_time = time.time()
# Workers that run train episodes
if rank != 0:
# Empty arrays for each episode. We save: length, reward, noise index
lens = [0] * ep_per_cpu
rews = [0] * ep_per_cpu
inds = [0] * ep_per_cpu
# For each episode in this CPU we get new parameters,
# update policy network and perform policy rollout
for i in range(ep_per_cpu):
ind, p = optimizer.get_parameters()
policy.set_parameters(p)
e_rew, e_len = policy.rollout()
lens[i] = e_len
rews[i] = e_rew
inds[i] = ind
# Aggregate information, will later send it to each worker using MPI
msg = np.array(rews + lens + inds, dtype=np.int32)
# Worker rank 0 that runs evaluation episodes
else:
rews = [0] * ep_per_cpu
lens = [0] * ep_per_cpu
for i in range(ep_per_cpu):
ind, p = optimizer.get_parameters()
policy.set_parameters(p)
e_rew, e_len = policy.rollout()
rews[i] = e_rew
lens[i] = e_len
eval_mean_rew = np.mean(rews)
eval_max_rew = np.max(rews)
# Empty array, evaluation results are not used for the update
msg = np.zeros(3 * ep_per_cpu, dtype=np.int32)
# MPI stuff
# Initialize array which will be updated with information from all workers using MPI
results = np.empty((cpus, 3 * ep_per_cpu), dtype=np.int32)
comm.Allgather([msg, MPI.INT], [results, MPI.INT])
# Skip empty evaluation results from worker with id 0
results = results[1:, :]
# Extract IDs and rewards
rews = results[:, :ep_per_cpu].flatten()
lens = results[:, ep_per_cpu:(2 * ep_per_cpu)].flatten()
ids = results[:, (2 * ep_per_cpu):].flatten()
# Update parameters
optimizer.update(ids=ids, rewards=rews)
# Steps passed = Sum of episode steps from all offsprings
steps = np.sum(lens)
steps_passed += steps
# Write some logs for this iteration
# Using logs we are able to recover solution saved
# after 1 hour of training or after 1 billion frames
if rank == 0:
iteration_time = (time.time() - iter_start_time)
time_elapsed = (time.time() - start_time) / 60
train_mean_rew = np.mean(rews)
train_max_rew = np.max(rews)
logger.log('------------------------------------')
logger.log('Iteration'.ljust(25) + '%f' % optimizer.iteration)
logger.log('EvalMeanReward'.ljust(25) + '%f' % eval_mean_rew)
logger.log('EvalMaxReward'.ljust(25) + '%f' % eval_max_rew)
logger.log('TrainMeanReward'.ljust(25) + '%f' % train_mean_rew)
logger.log('TrainMaxReward'.ljust(25) + '%f' % train_max_rew)
logger.log('StepsSinceStart'.ljust(25) + '%f' % steps_passed)
logger.log('StepsThisIter'.ljust(25) + '%f' % steps)
logger.log('IterationTime'.ljust(25) + '%f' % iteration_time)
logger.log('TimeSinceStart'.ljust(25) + '%f' % time_elapsed)
# Give optimizer a chance to log its own stuff
optimizer.log(logger)
logger.log('------------------------------------')
# Write stuff for training curve plot
stat_string = "{},\t{},\t{},\t{},\t{},\t{}\n".\
format(steps_passed, (time.time()-start_time),
eval_mean_rew, eval_max_rew, train_mean_rew, train_max_rew)
logger.write_general_stat(stat_string)
logger.write_optimizer_stat(optimizer.stat_string())
# Save currently proposed solution every 20 iterations
if optimizer.iteration % 20 == 1:
logger.save_parameters(optimizer.parameters,
optimizer.iteration)
#test best
if rank == 0:
final_rews = []
for i in range(200):
indd, p = optimizer.get_parameters()
policy.set_parameters(p)
e_rew, e_len = policy.rollout()
final_rews.append(e_rew)
final_eval = np.mean(final_rews)
logger.log('Final'.ljust(25) + '%f' % final_eval)
logger.save_parameters(optimizer.parameters, optimizer.iteration)
def main(ep_per_cpu, game, configuration_file, run_name):
start_time = time.time()
with open(configuration_file, 'r') as f:
configuration = json.loads(f.read())
env_name = '%sNoFrameskip-v4' % game
# MPI stuff
comm = MPI.COMM_WORLD
rank = comm.Get_rank()
cpus = comm.Get_size()
# Meta Population
meta_pop_size = 5
meta_pop_active = list(range(meta_pop_size))
next_havling_time = 40 # minutes for next
mu_list = [5, 10, 20, 50, 100]
# One cpu (rank 0) will evaluate results
train_cpus = cpus - meta_pop_size
# Deduce population size
lam = train_cpus * ep_per_cpu
# Create environment
env = gym.make(env_name)
# Create policy (Deep Neural Network)
# Internally it applies preprocessing to the environment state
policy = Policy(env, network=configuration['network'], nonlin_name=configuration['nonlin_name'])
# Create reference batch used for normalization
# It will be overwritten with vb from worker with rank 0
vb = policy.get_vb()
# Extract vector with current parameters.
parameters_list = [policy.get_parameters() for count in range(meta_pop_size)]
# Send parameters from worker 0 to all workers (MPI stuff)
# to ensure that every worker starts in the same position
for i in range(meta_pop_size):
comm.Bcast([parameters_list[i], MPI.FLOAT], root=0)
comm.Bcast([vb, MPI.FLOAT], root=0)
# Set the same virtual batch for each worker
if rank != 0:
policy.set_vb(vb)
if rank < meta_pop_size:
parent_id = rank
eval_moving_avg = 0
forget_factor = 0.9
if rank >= meta_pop_size:
parent_id = int((rank-meta_pop_size)//(train_cpus/meta_pop_size))
# Create optimizer with user defined settings (hyperparameters)
OptimizerClass = optimizer_dict[configuration['optimizer']]
optimizer = OptimizerClass(parameters_list, lam, rank, meta_pop_size, parent_id, mu_list[parent_id], configuration["settings"])
# Only rank 0 worker will log information from the training
logger = None
if rank < meta_pop_size: # TODO: Improve logger for meta pop
# Initialize logger, save virtual batch and save some basic stuff at the beginning
logger = Logger(optimizer.log_path(game, configuration['network'], run_name))
if rank == 0:
logger.save_vb(vb)
# Log basic stuff
logger.log('Game'.ljust(25) + '%s' % game, rank)
logger.log('Network'.ljust(25) + '%s' % configuration['network'], rank)
logger.log('Optimizer'.ljust(25) + '%s' % configuration['optimizer'], rank)
logger.log('Number of CPUs'.ljust(25) + '%d' % cpus, rank)
logger.log('Population'.ljust(25) + '%d' % lam, rank)
logger.log('Dimensionality'.ljust(25) + '%d' % len(parameters_list[0]), rank)
# Log basic info from the optimizer
#optimizer.log_basic(logger)
# We will count number of steps
# frames = 4 * steps (3 * steps for SpaceInvaders)
steps_passed = 0
while True:
# Iteration start time
iter_start_time = time.time()
# Workers that run train episodes
if rank >= meta_pop_size:
# Empty arrays for each episode. We save: length, reward, noise index
lens = [0] * ep_per_cpu
rews = [0] * ep_per_cpu
inds = [0] * ep_per_cpu
parent_id_arr = [0] * ep_per_cpu
# For each episode in this CPU we get new parameters,
# update policy network and perform policy rollout
for i in range(ep_per_cpu):
ind, p = optimizer.get_parameters()
policy.set_parameters(p)
e_rew, e_len = policy.rollout()
lens[i] = e_len
rews[i] = e_rew
inds[i] = ind
parent_id_arr[i] = parent_id
# Aggregate information, will later send it to each worker using MPI
msg = np.array(rews + lens + inds + parent_id_arr, dtype=np.int32)
# Worker rank 0 that runs evaluation episodes
else:
rews = [0] * ep_per_cpu
lens = [0] * ep_per_cpu
for i in range(ep_per_cpu):
ind, p = optimizer.get_parameters()
policy.set_parameters(p)
e_rew, e_len = policy.rollout()
rews[i] = e_rew
lens[i] = e_len
eval_mean_rew = np.mean(rews)
eval_max_rew = np.max(rews)
print("real mean {}".format(eval_mean_rew))
eval_moving_avg = eval_mean_rew + forget_factor*(eval_moving_avg-eval_mean_rew)
print("mean eval for rank {} is {}".format(rank, eval_moving_avg))
# Empty array, evaluation results are not used for the update
msg = np.array(eval_moving_avg, dtype=np.int32)
#msg = np.zeros(3 * ep_per_cpu, dtype=np.int32)
# MPI stuff
# Initialize array which will be updated with information from all workers using MPI
results = np.empty((cpus, 4 * ep_per_cpu), dtype=np.int32)
comm.Allgather([msg, MPI.INT], [results, MPI.INT])
eval_results = results[:meta_pop_size, 0]
# Skip empty evaluation results from worker with id 0
results = results[meta_pop_size:, :]
# Extract IDs and rewards
rews = results[:, :ep_per_cpu].flatten()
lens = results[:, ep_per_cpu:(2*ep_per_cpu)].flatten()
ids = results[:, (2 * ep_per_cpu):(3 * ep_per_cpu)].flatten()
par_id = results[:, (3 * ep_per_cpu):].flatten()
rews_list = [0] * meta_pop_size
ids_list = [0] * meta_pop_size
train_mean_reward = [0] * meta_pop_size
train_max_reward = [0] * meta_pop_size
for id in meta_pop_active:
rewards_id = [i for i, x in enumerate(par_id) if x == id]
if not rewards_id:
print("shittttttttttt {}".format(rewards_id))
rews_list[id] = ([rews[i] for i in rewards_id])
train_mean_reward[id] = (np.mean(rews_list[id]))
train_max_reward[id] = (np.max(rews_list[id]))
ids_list[id] = ([ids[i] for i in rewards_id])
# Update parameters
for i in meta_pop_active:
optimizer.update(ids=ids_list[i], rewards=rews_list[i])
#===============Sucssesive Halving==================
if next_havling_time <= ((time.time()-start_time)/60):
print("Assigning good weights to bad {}".format(((time.time() - start_time) / 60)))
print("Eval rewards list {}".format(eval_results))
ranking = sorted(range(len(eval_results)), key=lambda k: eval_results[k], reverse=True)
print("ranking {}".format(ranking))
bottom = ranking[int(0.6*meta_pop_size):]
print("bottom {}".format(bottom))
if parent_id in bottom:
optimizer.assign_weights(ranking[int(len(ranking) - ranking.index(parent_id) - 1)])
print("rank {} switch from {} to {}".format(rank,parent_id, ranking[int(len(ranking) - ranking.index(parent_id) - 1)]))
next_havling_time += 40
# print("Halving now time passed {}".format(((time.time()-start_time)/60)))
# eval_mean = []
# for rank_i in range(meta_population):
# # print(eval_results[rank_i, :ep_per_cpu])
# eval_mean.append(np.mean(eval_results[rank_i, :ep_per_cpu]))
# print("halving rewards list {}".format(eval_mean))
# ranking = sorted(range(len(eval_mean)), key=lambda k: eval_mean[k], reverse=True)
# print("ranking {}".format(ranking))
# bottom = ranking[int(half_pop // 2):]
# print("bottom {}".format(bottom))
# if parent_id in bottom:
# old = parent_id
# parent_id = int(ranking.index(parent_id)-len(ranking)//2)
# print("switch from {} to {}".format(old, parent_id))
# next_havling_time *= 2
# half_pop /= 2
# ep_per_cpu //=2
# Steps passed = Sum of episode steps from all offsprings
steps = np.sum(lens)
steps_passed += steps
# Write some logs for this iteration
# Using logs we are able to recover solution saved
# after 1 hour of training or after 1 billion frames
if rank < meta_pop_size:
iteration_time = (time.time() - iter_start_time)
time_elapsed = (time.time() - start_time) / 60
train_mean_rew = np.mean(rews)
train_max_rew = np.max(rews)
logger.log('------------------------------------', rank)
logger.log('Iteration'.ljust(25) + '%f' % (optimizer.iteration//meta_pop_size), rank)
logger.log('EvalMeanReward'.ljust(25) + '%f' % eval_moving_avg, rank)
logger.log('EvalMaxReward'.ljust(25) + '%f' % eval_max_rew, rank)
logger.log('TrainMeanReward'.ljust(25) + '%f' % train_mean_rew, rank)
logger.log('TrainMaxReward'.ljust(25) + '%f' % train_max_rew, rank)
logger.log('StepsSinceStart'.ljust(25) + '%f' % steps_passed, rank)
logger.log('StepsThisIter'.ljust(25) + '%f' % steps, rank)
logger.log('IterationTime'.ljust(25) + '%f' % iteration_time, rank)
logger.log('TimeSinceStart'.ljust(25) + '%f' % time_elapsed, rank)
# Give optimizer a chance to log its own stuff
# optimizer.log(logger)
logger.log('------------------------------------', rank)
# Write stuff for training curve plot
stat_string = "{},\t{},\t{},\t{},\t{},\t{}\n". \
format(steps_passed, (time.time() - start_time),
eval_moving_avg, eval_max_rew, train_mean_rew, train_max_rew)
logger.write_general_stat(stat_string, rank)
# logger.write_optimizer_stat(optimizer.stat_string())
# Save currently proposed solution every 20 iterations
if optimizer.iteration % 20 == 1:
logger.save_parameters(optimizer.parameters, optimizer.iteration, rank)