[singa] branch dev updated: train script for cifar 10 distributed training

[wa...@apache.org]

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wangwei pushed a commit to branch dev
in repository https://gitbox.apache.org/repos/asf/singa.git


The following commit(s) were added to refs/heads/dev by this push:
     new 451530a  train script for cifar 10 distributed training
     new 2ddf4aa  Merge pull request #862 from lzjpaul/21-7-6-train-script
451530a is described below

commit 451530a2aca273f69f2719c2fe2380661bd14d5d
Author: zhaojing <zh...@comp.nus.edu.sg>
AuthorDate: Tue Jul 6 19:56:44 2021 +0800

    train script for cifar 10 distributed training
---
 examples/cifar_distributed_cnn/train_cnn.py | 319 ++++++++++++++++++++++++++++
 1 file changed, 319 insertions(+)

diff --git a/examples/cifar_distributed_cnn/train_cnn.py b/examples/cifar_distributed_cnn/train_cnn.py
new file mode 100644
index 0000000..26e0403
--- /dev/null
+++ b/examples/cifar_distributed_cnn/train_cnn.py
@@ -0,0 +1,319 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+from singa import singa_wrap as singa
+from singa import device
+from singa import tensor
+from singa import opt
+# import opt
+import numpy as np
+import time
+import argparse
+from PIL import Image
+
+import warnings
+warnings.filterwarnings("ignore", category=DeprecationWarning)
+
+np_dtype = {"float32": np.float32}
+
+singa_dtype = {"float32": tensor.float32}
+
+
+# Data augmentation
+def augmentation(x, batch_size):
+    xpad = np.pad(x, [[0, 0], [0, 0], [4, 4], [4, 4]], 'symmetric')
+    for data_num in range(0, batch_size):
+        offset = np.random.randint(8, size=2)
+        x[data_num, :, :, :] = xpad[data_num, :,
+                                    offset[0]:offset[0] + x.shape[2],
+                                    offset[1]:offset[1] + x.shape[2]]
+        if_flip = np.random.randint(2)
+        if (if_flip):
+            x[data_num, :, :, :] = x[data_num, :, :, ::-1]
+    return x
+
+
+# Calculate accuracy
+def accuracy(pred, target):
+    # y is network output to be compared with ground truth (int)
+    y = np.argmax(pred, axis=1)
+    a = y == target
+    correct = np.array(a, "int").sum()
+    return correct
+
+
+# Data partition according to the rank
+def partition(global_rank, world_size, train_x, train_y, val_x, val_y):
+    # Partition training data
+    data_per_rank = train_x.shape[0] // world_size
+    idx_start = global_rank * data_per_rank
+    idx_end = (global_rank + 1) * data_per_rank
+    train_x = train_x[idx_start:idx_end]
+    train_y = train_y[idx_start:idx_end]
+
+    # Partition evaluation data
+    data_per_rank = val_x.shape[0] // world_size
+    idx_start = global_rank * data_per_rank
+    idx_end = (global_rank + 1) * data_per_rank
+    val_x = val_x[idx_start:idx_end]
+    val_y = val_y[idx_start:idx_end]
+    return train_x, train_y, val_x, val_y
+
+
+# Function to all reduce NUMPY accuracy and loss from multiple devices
+def reduce_variable(variable, dist_opt, reducer):
+    reducer.copy_from_numpy(variable)
+    dist_opt.all_reduce(reducer.data)
+    dist_opt.wait()
+    output = tensor.to_numpy(reducer)
+    return output
+
+
+def resize_dataset(x, image_size):
+    num_data = x.shape[0]
+    dim = x.shape[1]
+    X = np.zeros(shape=(num_data, dim, image_size, image_size),
+                 dtype=np.float32)
+    for n in range(0, num_data):
+        for d in range(0, dim):
+            X[n, d, :, :] = np.array(Image.fromarray(x[n, d, :, :]).resize(
+                (image_size, image_size), Image.BILINEAR),
+                                     dtype=np.float32)
+    return X
+
+
+def run(global_rank,
+        world_size,
+        local_rank,
+        max_epoch,
+        batch_size,
+        model,
+        data,
+        sgd,
+        graph,
+        verbosity,
+        dist_option='plain',
+        spars=None,
+        precision='float32'):
+    dev = device.create_cuda_gpu_on(local_rank)
+    dev.SetRandSeed(0)
+    np.random.seed(0)
+
+    if data == 'cifar10':
+        from data import cifar10
+        train_x, train_y, val_x, val_y = cifar10.load()
+    elif data == 'cifar100':
+        from data import cifar100
+        train_x, train_y, val_x, val_y = cifar100.load()
+    elif data == 'mnist':
+        from data import mnist
+        train_x, train_y, val_x, val_y = mnist.load()
+
+
+    num_channels = train_x.shape[1]
+    image_size = train_x.shape[2]
+    data_size = np.prod(train_x.shape[1:train_x.ndim]).item()
+    num_classes = (np.max(train_y) + 1).item()
+
+    if model == 'resnet':
+        from model import resnet
+        model = resnet.resnet50(num_channels=num_channels,
+                                num_classes=num_classes)
+    elif model == 'xceptionnet':
+        from model import xceptionnet
+        model = xceptionnet.create_model(num_channels=num_channels,
+                                         num_classes=num_classes)
+    elif model == 'cnn':
+        from model import cnn
+        model = cnn.create_model(num_channels=num_channels,
+                                 num_classes=num_classes)
+    elif model == 'alexnet':
+        from model import alexnet
+        model = alexnet.create_model(num_channels=num_channels,
+                                     num_classes=num_classes)
+    elif model == 'mlp':
+        import os, sys, inspect
+        current = os.path.dirname(
+            os.path.abspath(inspect.getfile(inspect.currentframe())))
+        parent = os.path.dirname(current)
+        sys.path.insert(0, parent)
+        from mlp import model
+        model = model.create_model(data_size=data_size,
+                                    num_classes=num_classes)
+
+    # For distributed training, sequential has better performance
+    if hasattr(sgd, "communicator"):
+        DIST = True
+        sequential = True
+    else:
+        DIST = False
+        sequential = False
+
+    if DIST:
+        train_x, train_y, val_x, val_y = partition(global_rank, world_size,
+                                                   train_x, train_y, val_x,
+                                                   val_y)
+
+
+
+
+    if model.dimension == 4:
+        tx = tensor.Tensor(
+            (batch_size, num_channels, model.input_size, model.input_size), dev,
+            singa_dtype[precision])
+    elif model.dimension == 2:
+        tx = tensor.Tensor((batch_size, data_size), dev, singa_dtype[precision])
+        np.reshape(train_x, (train_x.shape[0], -1))
+        np.reshape(val_x, (val_x.shape[0], -1))
+
+    ty = tensor.Tensor((batch_size,), dev, tensor.int32)
+    num_train_batch = train_x.shape[0] // batch_size
+    idx = np.arange(train_x.shape[0], dtype=np.int32)
+
+    # Attach model to graph
+    model.set_optimizer(sgd)
+    model.compile([tx], is_train=True, use_graph=graph, sequential=sequential)
+    dev.SetVerbosity(verbosity)
+    model.train()
+
+    b = 0
+    x = train_x[idx[b * batch_size:(b + 1) * batch_size]]
+    if model.dimension == 4:
+        x = augmentation(x, batch_size)
+        if (image_size != model.input_size):
+            x = resize_dataset(x, model.input_size)
+    x = x.astype(np_dtype[precision])
+    y = train_y[idx[b * batch_size:(b + 1) * batch_size]]
+
+    # Copy the patch data into input tensors
+    tx.copy_from_numpy(x)
+    ty.copy_from_numpy(y)
+
+    niters = 100
+
+    # check dataset shape correctness
+    if global_rank == 0:
+        print("Check the shape of dataset:")
+        print(tx.shape)
+        print(ty.shape)
+
+    # Training and evaluation loop
+    # for epoch in range(max_epoch):
+    #     start_time = time.time()
+    #     np.random.shuffle(idx)
+    #
+    #     if global_rank == 0:
+    #         print('Starting Epoch %d:' % (epoch))
+
+    # Training phase
+    dev.Sync()
+    start = time.time()
+
+    for b in range(niters):
+        # Generate the patch data in this iteration
+        # Train the model
+        model(tx, ty, dist_option, spars)
+
+    dev.Sync()
+    end = time.time()
+    titer = (end - start) / float(niters)
+    throughput = float(niters * batch_size * world_size) / (end - start)
+
+    if global_rank == 0:
+        print("Throughput = {} per second".format(throughput), flush=True)
+        print("TotalTime={}".format(end - start), flush=True)
+        print("Total={}".format(titer), flush=True)
+        print("world_size={}".format(world_size), flush=True)
+        print("batch_size={}".format(batch_size), flush=True)
+        print("model.input_size={}".format(model.input_size), flush=True)
+        print("num_channels={}".format(num_channels), flush=True)
+        print("num_classes={}".format(num_classes), flush=True)
+        print("data_size={}".format(data_size), flush=True)
+        print("image_size={}".format(image_size), flush=True)
+
+    dev.PrintTimeProfiling()
+
+
+if __name__ == '__main__':
+    # Use argparse to get command config: max_epoch, model, data, etc., for single gpu training
+    parser = argparse.ArgumentParser(
+        description='Training using the autograd and graph.')
+    parser.add_argument(
+        'model',
+        choices=['cnn', 'resnet', 'xceptionnet', 'mlp', 'alexnet'],
+        default='cnn')
+    parser.add_argument('data',
+                        choices=['mnist', 'cifar10', 'cifar100'],
+                        default='mnist')
+    parser.add_argument('-p',
+                        choices=['float32', 'float16'],
+                        default='float32',
+                        dest='precision')
+    parser.add_argument('-m',
+                        '--max-epoch',
+                        default=10,
+                        type=int,
+                        help='maximum epochs',
+                        dest='max_epoch')
+    parser.add_argument('-b',
+                        '--batch-size',
+                        default=32,
+                        type=int,
+                        help='batch size',
+                        dest='batch_size')
+    parser.add_argument('-l',
+                        '--learning-rate',
+                        default=0.005,
+                        type=float,
+                        help='initial learning rate',
+                        dest='lr')
+    # Determine which gpu to use
+    parser.add_argument('-i',
+                        '--device-id',
+                        default=0,
+                        type=int,
+                        help='which GPU to use',
+                        dest='device_id')
+    parser.add_argument('-g',
+                        '--disable-graph',
+                        default='True',
+                        action='store_false',
+                        help='disable graph',
+                        dest='graph')
+    parser.add_argument('-v',
+                        '--log-verbosity',
+                        default=0,
+                        type=int,
+                        help='logging verbosity',
+                        dest='verbosity')
+
+    args = parser.parse_args()
+
+    sgd = opt.SGD(lr=args.lr, momentum=0.9, weight_decay=1e-5, dtype=singa_dtype[args.precision])
+    run(0,
+        1,
+        args.device_id,
+        args.max_epoch,
+        args.batch_size,
+        args.model,
+        args.data,
+        sgd,
+        args.graph,
+        args.verbosity,
+        precision=args.precision)