import os import time import gc import numpy as np import tensorflow as tf import tensorflow.contrib.layers as layers import multi_gpu os.environ["CUDA_VISIBLE_DEVICES"] = "1" def residual_block(input, is_training): normalizer_params = {'is_training': is_training, 'updates_collections': tf.GraphKeys.UPDATE_OPS} h = layers.conv2d(input, 256, kernel_size=3, stride=1, activation_fn=tf.nn.relu, normalizer_fn=layers.batch_norm, normalizer_params=normalizer_params, weights_regularizer=layers.l2_regularizer(1e-4)) h = layers.conv2d(h, 256, kernel_size=3, stride=1, activation_fn=tf.identity, normalizer_fn=layers.batch_norm, normalizer_params=normalizer_params, weights_regularizer=layers.l2_regularizer(1e-4)) h = h + input return tf.nn.relu(h) def policy_heads(input, is_training): normalizer_params = {'is_training': is_training, 'updates_collections': tf.GraphKeys.UPDATE_OPS} h = layers.conv2d(input, 2, kernel_size=1, stride=1, activation_fn=tf.nn.relu, normalizer_fn=layers.batch_norm, normalizer_params=normalizer_params, weights_regularizer=layers.l2_regularizer(1e-4)) h = layers.flatten(h) h = layers.fully_connected(h, 362, activation_fn=tf.identity, weights_regularizer=layers.l2_regularizer(1e-4)) return h def value_heads(input, is_training): normalizer_params = {'is_training': is_training, 'updates_collections': tf.GraphKeys.UPDATE_OPS} h = layers.conv2d(input, 2, kernel_size=1, stride=1, activation_fn=tf.nn.relu, normalizer_fn=layers.batch_norm, normalizer_params=normalizer_params, weights_regularizer=layers.l2_regularizer(1e-4)) h = layers.flatten(h) h = layers.fully_connected(h, 256, activation_fn=tf.nn.relu, weights_regularizer=layers.l2_regularizer(1e-4)) h = layers.fully_connected(h, 1, activation_fn=tf.nn.tanh, weights_regularizer=layers.l2_regularizer(1e-4)) return h x = tf.placeholder(tf.float32, shape=[None, 19, 19, 17]) is_training = tf.placeholder(tf.bool, shape=[]) z = tf.placeholder(tf.float32, shape=[None, 1]) pi = tf.placeholder(tf.float32, shape=[None, 362]) h = layers.conv2d(x, 256, kernel_size=3, stride=1, activation_fn=tf.nn.relu, normalizer_fn=layers.batch_norm, normalizer_params={'is_training': is_training, 'updates_collections': tf.GraphKeys.UPDATE_OPS}, weights_regularizer=layers.l2_regularizer(1e-4)) for i in range(19): h = residual_block(h, is_training) v = value_heads(h, is_training) p = policy_heads(h, is_training) # loss = tf.reduce_mean(tf.square(z-v)) - tf.multiply(pi, tf.log(tf.clip_by_value(tf.nn.softmax(p), 1e-8, tf.reduce_max(tf.nn.softmax(p))))) value_loss = tf.reduce_mean(tf.square(z - v)) policy_loss = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(labels=pi, logits=p)) reg = tf.add_n(tf.get_collection(tf.GraphKeys.REGULARIZATION_LOSSES)) total_loss = value_loss + policy_loss + reg # train_op = tf.train.MomentumOptimizer(1e-4, momentum=0.9, use_nesterov=True).minimize(total_loss) update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS) with tf.control_dependencies(update_ops): train_op = tf.train.RMSPropOptimizer(1e-4).minimize(total_loss) var_list = tf.get_collection(tf.GraphKeys.GLOBAL_VARIABLES) saver = tf.train.Saver(max_to_keep=10, var_list=var_list) def train(): data_path = "/home/tongzheng/data/" data_name = os.listdir("/home/tongzheng/data/") epochs = 100 batch_size = 128 result_path = "./checkpoints/" with multi_gpu.create_session() as sess: sess.run(tf.global_variables_initializer()) ckpt_file = tf.train.latest_checkpoint(result_path) if ckpt_file is not None: print('Restoring model from {}...'.format(ckpt_file)) saver.restore(sess, ckpt_file) for epoch in range(epochs): for name in data_name: data = np.load(data_path + name) boards = data["boards"] wins = data["wins"] ps = data["ps"] print (boards.shape) print (wins.shape) print (ps.shape) # batch_num = 1 batch_num = boards.shape[0] // batch_size index = np.arange(boards.shape[0]) np.random.shuffle(index) value_losses = [] policy_losses = [] regs = [] time_train = -time.time() for iter in range(batch_num): lv, lp, r, _ = sess.run([value_loss, policy_loss, reg, train_op], feed_dict={x: boards[ index[iter * batch_size:(iter + 1) * batch_size]], z: wins[index[ iter * batch_size:(iter + 1) * batch_size]], pi: ps[index[ iter * batch_size:(iter + 1) * batch_size]], is_training: True}) value_losses.append(lv) policy_losses.append(lp) regs.append(r) del lv, lp, r if iter % 1 == 0: print( "Epoch: {}, Part {}, Iteration: {}, Time: {}, Value Loss: {}, Policy Loss: {}, Reg: {}".format( epoch, name, iter, time.time() + time_train, np.mean(np.array(value_losses)), np.mean(np.array(policy_losses)), np.mean(np.array(regs)))) del value_losses, policy_losses, regs, time_train time_train = -time.time() value_losses = [] policy_losses = [] regs = [] if iter % 20 == 0: save_path = "Epoch{}.Part{}.Iteration{}.ckpt".format(epoch, name, iter) saver.save(sess, result_path + save_path) del save_path del data, boards, wins, ps, batch_num, index gc.collect() def forward(board): result_path = "./checkpoints" itflag = False res = None if board is None: # data = np.load("/home/tongzheng/meta-data/80b7bf21bce14862806d48c3cd760a1b.npz") data = np.load("./data/7f83928932f64a79bc1efdea268698ae.npz") board = data["boards"][50].reshape(-1, 19, 19, 17) human_board = board[0].transpose(2, 0, 1) print("============================") print("human board sum : " + str(np.sum(human_board))) print("============================") print(board[:,:,:,-1]) itflag = False with multi_gpu.create_session() as sess: sess.run(tf.global_variables_initializer()) ckpt_file = tf.train.latest_checkpoint(result_path) if ckpt_file is not None: print('Restoring model from {}...'.format(ckpt_file)) saver.restore(sess, ckpt_file) else: raise ValueError("No model loaded") res = sess.run([tf.nn.softmax(p), v], feed_dict={x: board, is_training: itflag}) # res = sess.run([tf.nn.softmax(p),v], feed_dict={x:fix_board["boards"][300].reshape(-1, 19, 19, 17), is_training:False}) # res = sess.run([tf.nn.softmax(p),v], feed_dict={x:fix_board["boards"][50].reshape(-1, 19, 19, 17), is_training:True}) # print(np.argmax(res[0])) print(res) print(data["p"][0]) print(np.argmax(res[0])) print(np.argmax(data["p"][0])) # print(res[0].tolist()[0]) # print(np.argmax(res[0])) return res if __name__ == '__main__': # train() # if sys.argv[1] == "test": forward(None)