def __init__(self, env, master_policy,old_master_policy, sub_policies, old_sub_policies,
comm, clip_param=0.2, entcoeff=0, optim_epochs=10,
optim_stepsize=3e-4, optim_batchsize=64):
self.clip_param = clip_param
self.entcoeff = entcoeff
self.optim_epochs = optim_epochs
self.optim_stepsize = optim_stepsize
self.optim_batchsize = optim_batchsize
self.num_subpolicies = len(sub_policies)
self.sub_policies = sub_policies
self.master_policy = master_policy
ob_space = env.observation_space
ac_space = env.action_space
self.sp_ac = sub_policies[0].pdtype.sample_placeholder([None])
atarg = tf.placeholder(dtype=tf.float32, shape=[None])
ret = tf.placeholder(dtype=tf.float32, shape=[None]) # Empirical return
# for training theta
# inputs for training theta
ob = U.get_placeholder_cached(name="ob")
ob_master = U.get_placeholder_cached(name="adv_ob")
ac_master = master_policy.pdtype.sample_placeholder([None])
loss_master = self.policy_loss_master(master_policy, old_master_policy, ob_master, ac_master, atarg, ret, clip_param)
self.master_policy_var_list = master_policy.get_trainable_variables()
self.master_loss = U.function([ob_master, ac_master, atarg, ret], U.flatgrad(loss_master, self.master_policy_var_list))
self.master_adam = MpiAdam(self.master_policy_var_list, comm=comm)
self.assign_old_eq_new = U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_master_policy.get_variables(), master_policy.get_variables())])
self.assign_subs = []
self.change_subs = []
self.adams = []
self.losses = []
for i in range(self.num_subpolicies):
varlist = sub_policies[i].get_trainable_variables()
self.adams.append(MpiAdam(varlist))
# loss for test
loss = self.policy_loss(sub_policies[i], sub_policies[(i-1)%2], old_sub_policies[i], ob, self.sp_ac, atarg, ret, clip_param)
self.losses.append(U.function([ob, self.sp_ac, atarg, ret], U.flatgrad(loss, varlist)))
self.assign_subs.append(U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_sub_policies[i].get_variables(), sub_policies[i].get_variables())]))
self.zerograd = U.function([], self.nograd(varlist))
U.initialize()
self.master_adam.sync()
for i in range(self.num_subpolicies):
self.adams[i].sync()
def __init__(self, env, policy, old_policy, sub_policies, old_sub_policies, comm, clip_param=0.2, entcoeff=0, optim_epochs=10, optim_stepsize=3e-4, optim_batchsize=64):
self.policy = policy
self.clip_param = clip_param
self.entcoeff = entcoeff
self.optim_epochs = optim_epochs
self.optim_stepsize = optim_stepsize
self.optim_batchsize = optim_batchsize
self.num_subpolicies = len(sub_policies)
self.sub_policies = sub_policies
ob_space = env.observation_space
ac_space = env.action_space
if WRITE_SCALAR:
self.scalar_writer = tf.summary.FileWriter(osp.join("savedir/",'checkpoints', 'scalar%d' % time.time()))
# for training theta
# inputs for training theta
ob = U.get_placeholder_cached(name="ob")
ac = policy.pdtype.sample_placeholder([None])
atarg = tf.placeholder(dtype=tf.float32, shape=[None]) # Target advantage function (if applicable)
ret = tf.placeholder(dtype=tf.float32, shape=[None]) # Empirical return
total_loss = self.policy_loss(policy, old_policy, ob, ac, atarg, ret, clip_param)
self.master_policy_var_list = policy.get_trainable_variables()
self.master_loss = U.function([ob, ac, atarg, ret], U.flatgrad(total_loss, self.master_policy_var_list))
self.master_adam = MpiAdam(self.master_policy_var_list, comm=comm)
summ = tf.summary.scalar("total_loss", total_loss)
self.calc_summary = U.function([ob, ac, atarg, ret],[summ])
self.assign_old_eq_new = U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_policy.get_variables(), policy.get_variables())])
self.assign_subs = []
self.change_subs = []
self.adams = []
self.losses = []
self.sp_ac = sub_policies[0].pdtype.sample_placeholder([None])
for i in range(self.num_subpolicies):
varlist = sub_policies[i].get_trainable_variables()
self.adams.append(MpiAdam(varlist))
# loss for test
loss = self.policy_loss(sub_policies[i], old_sub_policies[i], ob, self.sp_ac, atarg, ret, clip_param)
self.losses.append(U.function([ob, self.sp_ac, atarg, ret], U.flatgrad(loss, varlist)))
self.assign_subs.append(U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_sub_policies[i].get_variables(), sub_policies[i].get_variables())]))
self.zerograd = U.function([], self.nograd(varlist))
U.initialize()
self.master_adam.sync()
for i in range(self.num_subpolicies):
self.adams[i].sync()
def __init__(self, envs, policies, sub_policies, old_policies, old_sub_policies,
clip_param=0.2, vfcoeff=1., entcoeff=0, divcoeff=0., optim_epochs=10,
master_lr=1e-3, sub_lr=3e-4, optim_batchsize=64, envsperbatch=None,
num_rollouts=None, nlstm=256, recurrent=False):
self.policies = policies
self.sub_policies = sub_policies
self.old_policies = old_policies
self.old_sub_policies = old_sub_policies
self.clip_param = clip_param
self.entcoeff = entcoeff
self.optim_epochs = optim_epochs
self.optim_batchsize = optim_batchsize
self.num_master_groups = num_master_groups = len(policies)
self.num_subpolicies = num_subpolicies = len(sub_policies)
self.ob_space = envs[0].observation_space
self.ac_space = envs[0].action_space
self.nbatch = nbatch = num_rollouts * envsperbatch
self.envsperbatch = envsperbatch
self.master_obs = [U.get_placeholder(name="master_ob_%i"%x, dtype=tf.float32,
shape=[None] + list(self.ob_space.shape)) for x in range(num_master_groups)]
self.master_acs = [policies[0].pdtype.sample_placeholder([None])
for _ in range(num_master_groups)]
self.master_atargs = [tf.placeholder(dtype=tf.float32, shape=[None])
for _ in range(num_master_groups)]
self.master_ret = [tf.placeholder(dtype=tf.float32, shape=[None])
for _ in range(num_master_groups)]
retvals = zip(*[self.policy_loss(policies[i],
old_policies[i], self.master_obs[i], self.master_acs[i], self.master_atargs[i],
self.master_ret[i], clip_param, mask=tf.constant(1.), vfcoeff=vfcoeff,
entcoeff=entcoeff) for i in range(num_master_groups)])
self.master_losses, self.master_kl, self.master_pol_surr, self.master_vf_loss, \
self.master_entropy, self.master_values, _ = retvals
master_trainers = [tf.train.AdamOptimizer(learning_rate=master_lr,
name='master_adam_%i'%_) for _ in range(num_master_groups)]
master_params = [policies[i].get_trainable_variables()
for i in range(num_master_groups)]
master_grads = [tf.gradients(self.master_losses[i], master_params[i])
for i in range(num_master_groups)]
master_grads = [list(zip(g, p)) for g, p in zip(master_grads, master_params)]
# TODO: gradient clipping
self.assign_old_eq_new = [U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_policies[i].get_variables(),
policies[i].get_variables())]) for i in range(num_master_groups)]
self.master_train_steps = [master_trainers[i].apply_gradients(master_grads[i])
for i in range(num_master_groups)]
if not recurrent:
self.sub_obs = [U.get_placeholder(name="sub_ob_%i"%x, dtype=tf.float32,
shape=[None] + list(self.ob_space.shape)) for x in range(num_subpolicies)]
self.sub_acs = [sub_policies[0].pdtype.sample_placeholder([None])
for _ in range(num_subpolicies)]
self.sub_atargs = [tf.placeholder(dtype=tf.float32, shape=[None])
for _ in range(num_subpolicies)]
self.sub_ret = [tf.placeholder(dtype=tf.float32, shape=[None])
for _ in range(num_subpolicies)]
self.logpacs = [tf.placeholder(dtype=tf.float32, shape=[num_subpolicies, None])
for _ in range(num_subpolicies)]
self.loss_masks = [tf.placeholder(dtype=tf.float32, shape=[None])
for _ in range(num_subpolicies)]
if recurrent:
self.sub_obs = [U.get_placeholder(name="sub_ob_%i"%x, dtype=tf.float32,
shape=[nbatch] + list(self.ob_space.shape)) for x in range(num_subpolicies)]
self.sub_masks = [U.get_placeholder(name="masks_%i"%_, dtype=tf.float32,
shape=[nbatch]) for _ in range(num_subpolicies)]
self.sub_states = [U.get_placeholder(name="states_%i"%_, dtype=tf.float32,
shape=[envsperbatch, 2*nlstm]) for _ in range(num_subpolicies)]
sub_retvals = zip(*[self.policy_loss(sub_policies[i],
old_sub_policies[i], self.sub_obs[i], self.sub_acs[i], self.sub_atargs[i],
self.sub_ret[i], clip_param, mask=self.loss_masks[i], vfcoeff=vfcoeff,
entcoeff=entcoeff, divcoeff=divcoeff, logpacs=None)#self.logpacs[i])
for i in range(num_subpolicies)])
self.sub_losses, self.sub_kl, self.sub_pol_surr, self.sub_vf_loss, \
self.sub_entropy, self.sub_values, self.div_loss = sub_retvals
sub_trainers = [tf.train.AdamOptimizer(learning_rate=sub_lr)
for _ in range(num_subpolicies)]
sub_params = [sub_policies[i].get_trainable_variables()
for i in range(num_subpolicies)]
sub_grads = [tf.gradients(self.sub_losses[i], sub_params[i])
for i in range(num_subpolicies)]
sub_grads = [list(zip(g, p)) for g, p in zip(sub_grads, sub_params)]
# TODO: gradient clipping
self.subs_assign_old_eq_new = [U.function([],[], updates=[tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_sub_policies[i].get_variables(),
sub_policies[i].get_variables())]) for i in range(num_subpolicies)]
self.sub_train_steps = [sub_trainers[i].apply_gradients(sub_grads[i])
for i in range(num_subpolicies)]
U.initialize()
def __init__(self,
env,
sub_policy,
old_sub_policy,
comm,
clip_param=0.2,
entcoeff=0,
optim_epochs=10,
optim_stepsize=3e-4,
optim_batchsize=64,
args=None):
# self.policy = policy
self.clip_param = clip_param
self.entcoeff = entcoeff
self.optim_epochs = optim_epochs
self.optim_stepsize = optim_stepsize
self.optim_batchsize = optim_batchsize
# self.num_subpolicies = len(sub_policies)
self.sub_policy = sub_policy
self.args = args
ob_space = env.observation_space
ac_space = env.action_space
# for training theta
# inputs for training theta
ob = U.get_placeholder_cached(name="ob")
# ac = policy.pdtype.sample_placeholder([None])
atarg = tf.placeholder(
dtype=tf.float32,
shape=[None]) # Target advantage function (if applicable)
ret = tf.placeholder(dtype=tf.float32,
shape=[None]) # Empirical return
entcoeff = tf.placeholder(dtype=tf.float32, name="entcoef")
# total_loss = self.policy_loss(policy, old_policy, ob, ac, atarg, ret, clip_param, entcoeff)
# self.master_policy_var_list = policy.get_trainable_variables()
# self.master_loss = U.function([ob, ac, atarg, ret, entcoeff], U.flatgrad(total_loss, self.master_policy_var_list))
# self.master_adam = MpiAdam(self.master_policy_var_list, comm=comm)
# self.assign_old_eq_new = U.function([],[], updates=[tf.assign(oldv, newv)
# for (oldv, newv) in zipsame(old_policy.get_variables(), policy.get_variables())])
self.assign_subs = []
self.change_subs = []
self.adams = []
self.losses = []
self.sp_ac = sub_policy.pdtype.sample_placeholder([None])
# for i in range(self.num_subpolicies):
varlist = sub_policy.get_trainable_variables()
self.adams.append(MpiAdam(varlist))
# loss for test
loss = self.policy_loss(sub_policy, old_sub_policy, ob, self.sp_ac,
atarg, ret, clip_param, entcoeff)
self.losses.append(
U.function([ob, self.sp_ac, atarg, ret, entcoeff],
U.flatgrad(loss, varlist)))
self.assign_subs.append(
U.function(
[], [],
updates=[
tf.assign(oldv, newv)
for (oldv, newv) in zipsame(old_sub_policy.get_variables(),
sub_policy.get_variables())
]))
self.zerograd = U.function([], self.nograd(varlist))
U.initialize()
# self.master_adam.sync()
# for i in range(self.num_subpolicies):
self.adams[0].sync()